ADR4540BRZ-R7 [ADI]
Ultralow Noise, High Accuracy; 超低噪声，高精度
| 型号： | ADR4540BRZ-R7 |
| 厂家： | 
ADI |
| 描述： | Ultralow Noise, High Accuracy |
| 文件： | 总32页 (文件大小：977K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ultralow Noise, High Accuracy
Voltage References
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
FEATURES
PIN CONFIGURATION
ADR4520/ADR4525/
ADR4530/ADR4533/
ADR4540/ADR4550
Maximum temperature coefficient (TCVOUT): 2 ppm/°C
Output noise (0.1 Hz to 10 Hz)
Less than 1 μV p-p at VOUT of 2.048 V typical
Initial output voltage error: 0.02% (maximum)
Input voltage range: 3 V to 15 V
Operating temperature: −40°C to +125°C
Output current: +10 mA source/−10 mA sink
Low quiescent current: 950 μA (maximum)
Low dropout voltage: 300 mV at 2 mA (VOUT ≥ 3 V)
8-lead SOIC package
NC
1
2
3
4
8
7
6
5
TP
V
NC
IN
NC
V
OUT
TOP VIEW
(Not to Scale)
GND
NC
NOTES
1. NC = NO CONNECT.
2. TP = TEST PIN. DO NOT CONNECT.
Figure 1. 8-Lead SOIC
APPLICATIONS
Precision data acquisition systems
High resolution data converters
High precision measurement devices
Industrial instrumentation
Medical devices
Automotive battery monitoring
GENERAL DESCRIPTION
The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/
ADR4550 devices are high precision, low power, low noise
voltage references featuring 0.02% maximum initial error,
excellent temperature stability, and low output noise.
Table 1. Selection Guide
Model
Output Voltage (V)
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
2.048
2.5
3.0
This family of voltage references uses an innovative core
topology to achieve high accuracy while offering industry-leading
temperature stability and noise performance. The low, thermally
induced output voltage hysteresis and low long-term output
voltage drift of the devices also improve system accuracy over
time and temperature variations.
3.3
4.096
5.0
Table 2. Voltage Reference Choices from Analog Devices
Low Cost/
VOUT (V) Low Power Micropower
Ultralow High Voltage,
A maximum operating current of 950 μA and a maximum low
dropout voltage of 300 mV allow the devices to function very
well in portable equipment.
Noise
High Performance
2.048
ADR360
ADR3420
ADR3425
AD1582
ADR361
ADR3450
AD1585
ADR365
REF191
ADR430
ADR440
ADR431
ADR441
2.5
ADR291
REF192
ADR03
AD780
The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/
ADR4550 series of references is provided in an 8-lead SOIC
package and is available in a wide range of output voltages, all of
which are specified over the extended industrial temperature
range of −40°C to +125°C.
5.0
ADR293
REF195
ADR435
ADR445
ADR02
AD586
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rightsof third parties that may result fromits use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks andregisteredtrademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2012 Analog Devices, Inc. All rights reserved.
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
TABLE OF CONTENTS
Data Sheet
Features .............................................................................................. 1
Applications....................................................................................... 1
Pin Configuration............................................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
ADR4520 Electrical Characteristics........................................... 3
ADR4525 Electrical Characteristics........................................... 4
ADR4530 Electrical Characteristics........................................... 5
ADR4533 Electrical Characteristics........................................... 6
ADR4540 Electrical Characteristics........................................... 7
ADR4550 Electrical Characteristics........................................... 8
Absolute Maximum Ratings............................................................ 9
Thermal Resistance ...................................................................... 9
ESD Caution.................................................................................. 9
Pin Configuration and Function Descriptions........................... 10
Typical Performance Characteristics ........................................... 11
ADR4520 ..................................................................................... 11
ADR4525 ..................................................................................... 14
ADR4530 ..................................................................................... 17
ADR4533 ..................................................................................... 20
ADR4540 ..................................................................................... 23
ADR4550 ..................................................................................... 26
Terminology.................................................................................... 29
Theory of Operation ...................................................................... 30
Long-Term Drift......................................................................... 30
Power Dissipation....................................................................... 30
Applications Information .............................................................. 31
Basic Voltage Reference Connection ....................................... 31
Input and Output Capacitors.................................................... 31
Location of Reference in System .............................................. 31
Sample Applications................................................................... 31
Outline Dimensions....................................................................... 32
Ordering Guide............................................................................... 32
REVISION HISTORY
4/12—Revision 0: Initial Version
Rev. 0 | Page 2 of 32
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
SPECIFICATIONS
ADR4520 ELECTRICAL CHARACTERISTICS
Unless otherwise noted, VIN = 3 V to 15 V, IL = 0 mA, TA = 25°C.
Table 3.
Parameter
Symbol
VOUT
Test Conditions/Comments
Min
Typ
Max
Unit
OUTPUT VOLTAGE
2.048
V
INITIAL OUTPUT VOLTAGE ERROR
VOUT_ERR
B grade
A grade
0.02
410
0.04
%
μV
%
820
μV
SOLDER HEAT SHIFT
0.02
%
TEMPERATURE COEFFICIENT
TCVOUT
B grade, −40°C ≤ TA ≤ +125°C
A grade, −40°C ≤ TA ≤ +125°C
2
4
ppm/°C
ppm/°C
ppm/V
ppm/mA
ppm/mA
μA
LINE REGULATION
LOAD REGULATION
ΔVOUT/ΔVIN −40°C ≤ TA ≤ +125°C
1
10
80
120
950
1
ΔVOUT/ΔIL
IL = 0 mA to +10 mA source, −40°C ≤ TA ≤ +125°C
30
100
700
IL = 0 mA to −10 mA sink, −40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, IL = 2 mA
fIN = 1 kHz
QUIESCENT CURRENT
DROPOUT VOLTAGE
IQ
VDO
V
V
1
RIPPLE REJECTION RATIO
OUTPUT CURRENT CAPACITY
Sinking
RRR
IL
90
dB
−8
10
mA
mA
Sourcing
OUTPUT VOLTAGE NOISE
eNp-p
0.1 Hz to 10.0 Hz
1 kHz
1.0
35.8
50
μV p-p
nV/√Hz
ppm
OUTPUT VOLTAGE NOISE DENSITY eN
OUTPUT VOLTAGE HYSTERESIS
ΔVOUT_HYS
TA = temperature cycled from +25°C to −40°C to
+125°C and back to +25°C
LONG-TERM DRIFT
ΔVOUT_LTD
tR
1000 hours at 60°C
25
90
ppm
µs
TURN-ON SETTLING TIME
LOAD CAPACITANCE
IL = 0 mA, CL = 1 µF, CIN = 0.1 µF, RL = 1 kΩ
1
100
µF
Rev. 0 | Page 3 of 32
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
ADR4525 ELECTRICAL CHARACTERISTICS
Unless otherwise noted, VIN = 3 V to 15 V, IL = 0 mA, TA = 25°C.
Table 4.
Parameter
Symbol
VOUT
Test Conditions/Comments
Min
Typ
Max
Unit
V
OUTPUT VOLTAGE
2.500
INITIAL OUTPUT VOLTAGE ERROR
VOUT_ERR
B grade
A grade
0.02
500
0.04
%
μV
%
1
mV
SOLDER HEAT SHIFT
0.02
%
TEMPERATURE COEFFICIENT
TCVOUT
B grade, −40°C ≤ TA ≤ +125°C
A grade, −40°C ≤ TA ≤ +125°C
2
4
ppm/°C
ppm/°C
ppm/V
ppm/mA
ppm/mA
μA
LINE REGULATION
LOAD REGULATION
ΔVOUT/ΔVIN −40°C ≤ TA ≤ +125°C
1
10
ΔVOUT/ΔIL
IL = 0 mA to +10 mA source, −40°C ≤ TA ≤ +125°C
30
60
700
80
IL = 0 mA to −10 mA sink, −40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, IL = 2 mA
fIN = 1 kHz
120
950
500
500
QUIESCENT CURRENT
DROPOUT VOLTAGE
IQ
VDO
mV
mV
RIPPLE REJECTION RATIO
OUTPUT CURRENT CAPACITY
Sinking
RRR
IL
90
dB
−10
10
mA
mA
Sourcing
OUTPUT VOLTAGE NOISE
eNp-p
0.1 Hz to 10.0 Hz
1 kHz
1.25
41.3
50
μV p-p
nV/√Hz
ppm
OUTPUT VOLTAGE NOISE DENSITY eN
OUTPUT VOLTAGE HYSTERESIS
ΔVOUT_HYS
TA = temperature cycled from +25°C to −40°C to
+125°C and back to +25°C
LONG-TERM DRIFT
ΔVOUT_LTD
tR
1000 hours at 60°C
25
ppm
µs
TURN-ON SETTLING TIME
LOAD CAPACITANCE
IL = 0 mA, CL = 1 µF, CIN = 0.1 µF, RL = 1 kΩ
125
1
100
µF
Rev. 0 | Page 4 of 32
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
ADR4530 ELECTRICAL CHARACTERISTICS
Unless otherwise noted, VIN = 3.1 V to 15 V, IL = 0 mA, TA = 25°C.
Table 5.
Parameter
Symbol
VOUT
Test Conditions/Comments
Min
Typ
Max
Unit
V
OUTPUT VOLTAGE
3.000
INITIAL OUTPUT VOLTAGE ERROR
VOUT_ERR
B grade
A grade
0.02
600
0.04
%
μV
%
1.2
mV
SOLDER HEAT SHIFT
0.02
%
TEMPERATURE COEFFICIENT
TCVOUT
B grade, −40°C ≤ TA ≤ +125°C
A grade, −40°C ≤ TA ≤ +125°C
2
4
ppm/°C
ppm/°C
ppm/V
ppm/mA
ppm/mA
μA
LINE REGULATION
LOAD REGULATION
ΔVOUT/ΔVIN −40°C ≤ TA ≤ +125°C
1
10
ΔVOUT/ΔIL
IL = 0 mA to +10 mA source, −40°C ≤ TA ≤ +125°C
30
60
700
80
IL = 0 mA to −10 mA sink, −40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, IL = 2 mA
fIN = 1 kHz
120
950
100
300
QUIESCENT CURRENT
DROPOUT VOLTAGE
IQ
VDO
mV
mV
RIPPLE REJECTION RATIO
OUTPUT CURRENT CAPACITY
Sinking
RRR
IL
90
dB
−10
10
mA
mA
Sourcing
OUTPUT VOLTAGE NOISE
eNp-p
0.1 Hz to 10.0 Hz
1 kHz
1.6
60
50
μV p-p
nV/√Hz
ppm
OUTPUT VOLTAGE NOISE DENSITY eN
OUTPUT VOLTAGE HYSTERESIS
ΔVOUT_HYS
TA = temperature cycled from +25°C to −40°C to
+125°C and back to +25°C
LONG-TERM DRIFT
ΔVOUT_LTD
tR
1000 hours at 60°C
25
ppm
µs
TURN-ON SETTLING TIME
LOAD CAPACITANCE
IL = 0 mA, CL = 0.1 µF, CIN = 0.1 µF, RL = 1 kΩ
130
0.1
100
µF
Rev. 0 | Page 5 of 32
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
ADR4533 ELECTRICAL CHARACTERISTICS
Unless otherwise noted, VIN = 3.4 V to 15 V, IL = 0 mA, TA = 25°C.
Table 6.
Parameter
Symbol
VOUT
Test Conditions/Comments
Min
Typ
Max
Unit
V
OUTPUT VOLTAGE
3.300
INITIAL OUTPUT VOLTAGE ERROR
VOUT_ERR
B grade
A grade
0.02
660
0.04
1.32
%
µV
%
mV
SOLDER HEAT SHIFT
0.02
%
TEMPERATURE COEFFICIENT
TCVOUT
B grade, −40°C ≤ TA ≤ +125°C
A grade, −40°C ≤ TA ≤ +125°C
2
4
ppm/°C
ppm/°C
ppm/V
ppm/mA
ppm/mA
μA
LINE REGULATION
LOAD REGULATION
ΔVOUT/ΔVIN −40°C ≤ TA ≤ +125°C
1
10
ΔVOUT/ΔIL
IL = 0 mA to +10 mA source, −40°C ≤ TA ≤ +125°C
30
60
700
80
IL = 0 mA to −10 mA sink, −40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, IL = 2 mA
fIN =1 kHz
120
950
100
300
QUIESCENT CURRENT
DROPOUT VOLTAGE
IQ
VDO
mV
mV
RIPPLE REJECTION RATIO
OUTPUT CURRENT CAPACITY
Sinking
RRR
IL
90
dB
−10
10
mA
mA
Sourcing
OUTPUT VOLTAGE NOISE
eNp-p
0.1 Hz to 10.0 Hz
1 kHz
2.1
64.2
50
μV p-p
nV/√Hz
ppm
OUTPUT VOLTAGE NOISE DENSITY eN
OUTPUT VOLTAGE HYSTERESIS
ΔVOUT_HYS
TA = temperature cycled from +25°C to −40°C to
+125°C and back to +25°C
LONG-TERM DRIFT
ΔVOUT_LTD
tR
1000 hours at 60°C
25
ppm
µs
TURN-ON SETTLING TIME
LOAD CAPACITANCE
IL = 0 mA, CL = 0.1 µF, CIN = 0.1 µF, RL = 1 kΩ
135
0.1
100
µF
Rev. 0 | Page 6 of 32
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
ADR4540 ELECTRICAL CHARACTERISTICS
Unless otherwise noted, VIN = 4.2 V to 15 V, IL = 0 mA, TA = 25°C.
Table 7.
Parameter
Symbol
VOUT
Test Conditions/Comments
Min
Typ
Max
Unit
V
OUTPUT VOLTAGE
4.096
INITIAL OUTPUT VOLTAGE ERROR
VOUT_ERR
B grade
A grade
0.02
820
0.04
%
μV
%
1.64
mV
SOLDER HEAT SHIFT
0.02
%
TEMPERATURE COEFFICIENT
TCVOUT
B grade, −40°C ≤ TA ≤ +125°C
A grade, −40°C ≤ TA ≤ +125°C
2
4
ppm/°C
ppm/°C
ppm/V
ppm/mA
ppm/mA
μA
LINE REGULATION
LOAD REGULATION
ΔVOUT/ΔVIN −40°C ≤ TA ≤ +125°C
1
10
ΔVOUT/ΔIL
IL = 0 mA to +10 mA source, −40°C ≤ TA ≤ +125°C
25
50
700
80
IL = 0 mA to −10 mA sink, −40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, IL = 2 mA
fIN = 1 kHz
120
950
100
300
QUIESCENT CURRENT
DROPOUT VOLTAGE
IQ
VDO
mV
mV
RIPPLE REJECTION RATIO
OUTPUT CURRENT CAPACITY
Sinking
RRR
IL
90
dB
−10
10
mA
mA
Sourcing
OUTPUT VOLTAGE NOISE
eNp-p
0.1 Hz to 10.0 Hz
1 kHz
2.7
83.5
50
μV p-p
nV/√Hz
ppm
OUTPUT VOLTAGE NOISE DENSITY eN
OUTPUT VOLTAGE HYSTERESIS
ΔVOUT_HYS
TA = temperature cycled from +25°C to −40°C to
+125°C and back to +25°C
LONG-TERM DRIFT
ΔVOUT_LTD
tR
1000 hours at 60°C
25
ppm
µs
TURN-ON SETTLING TIME
LOAD CAPACITANCE
IL = 0 mA, CL = 0.1 µF, CIN = 0.1 µF, RL = 1 kΩ
155
0.1
100
µF
Rev. 0 | Page 7 of 32
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
ADR4550 ELECTRICAL CHARACTERISTICS
Unless otherwise noted, VIN = 5.1 V to 15 V, IL = 0 mA, TA = 25°C.
Table 8.
Parameter
Symbol
VOUT
Test Conditions/Comments
Min
Typ
Max
Unit
V
OUTPUT VOLTAGE
5.000
INITIAL OUTPUT VOLTAGE ERROR
VOUT_ERR
B grade
A grade
0.02
0.04
%
mV
%
mV
1
2
SOLDER HEAT SHIFT
0.02
%
TEMPERATURE COEFFICIENT
TCVOUT
B grade, −40°C ≤ TA ≤ +125°C
A grade, −40°C ≤ TA ≤ +125°C
2
4
ppm/°C
ppm/°C
ppm/V
ppm/mA
ppm/mA
μA
LINE REGULATION
LOAD REGULATION
ΔVOUT/ΔVIN −40°C ≤ TA ≤ +125°C
1
10
ΔVOUT/ΔIL
IL = 0 mA to +10 mA source, −40°C ≤ TA ≤ +125°C
25
35
700
80
IL = 0 mA to −10 mA sink, −40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, IL = 2 mA
fIN = 1 kHz
120
950
100
300
QUIESCENT CURRENT
DROPOUT VOLTAGE
IQ
VDO
mV
mV
RIPPLE REJECTION RATIO
OUTPUT CURRENT CAPACITY
Sinking
RRR
IL
90
dB
−10
10
mA
mA
Sourcing
OUTPUT VOLTAGE NOISE
eNp-p
0.1 Hz to 10.0 Hz
1 kHz
2.8
95.3
50
μV p-p
nV/√Hz
ppm
OUTPUT VOLTAGE NOISE DENSITY eN
OUTPUT VOLTAGE HYSTERESIS
ΔVOUT_HYS
TA = temperature cycled from +25°C to −40°C to
+125°C and back to +25°C
LONG-TERM DRIFT
ΔVOUT_LTD
tR
1000 hours at 60°C
25
ppm
µs
TURN-ON SETTLING TIME
LOAD CAPACITANCE
IL = 0 mA, CL = 0.1 µF, CIN = 0.1 µF, RL = 1 kΩ
160
0.1
100
µF
Rev. 0 | Page 8 of 32
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
THERMAL RESISTANCE
θJA is specified for the worst-case conditions; that is, a device
soldered in a circuit board for surface-mount packages.
Table 9.
Parameter
Rating
Supply Voltage
16 V
Table 10. Thermal Resistance
Package Type
Operating Temperature Range
Storage Temperature Range
Junction Temperature Range
−40°C to +125°C
−65°C to +150°C
−65°C to +150°C
θJA
θJC
Unit
8-Lead SOIC
120
42
°C/W
ESD CAUTION
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Rev. 0 | Page 9 of 32
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Data Sheet
ADR4520/ADR4525/
ADR4530/ADR4533/
ADR4540/ADR4550
NC
1
2
3
4
8
7
6
5
TP
V
NC
IN
NC
V
OUT
TOP VIEW
(Not to Scale)
GND
NC
NOTES
1. NC = NO CONNECT.
2. TP = TEST PIN. DO NOT CONNECT.
Figure 2. Pin Configuration
Table 11. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
2
3
4
5
6
7
8
NC
VIN
NC
GND
NC
VOUT
NC
TP
No Connect. This pin is not connected internally.
Input Voltage Connection.
No Connect. This pin is not connected internally.
Ground.
No Connect. This pin is not connected internally.
Output Voltage.
No Connect. This pin is not connected internally.
Test Pin. Do not connect.
Rev. 0 | Page 10 of 32
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, unless otherwise noted.
ADR4520
2.0485
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
ADR4520
ADR4520
2.0484
2.0483
2.0482
2.0481
2.0480
2.0479
2.0478
2.0477
2.0476
2.0475
+125°C
+25°C
–40°C
–10 –8
–6
–4
–2
I
0
2
4
6
8
10
–50
–30
–10
10
30
50
70
90
110
130
(mA)
TEMPERATURE (°C)
LOAD
Figure 6. ADR4520 Dropout Voltage vs. Load Current
Figure 3. ADR4520 Output Voltage vs. Temperature
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
35
30
25
20
15
10
5
ADR4520
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
0
–60 –40 –20
0
20
40
60
80
100 120 140
TEMPERATURE (°C)
ΔV
(ppm)
OUT_HYS
Figure 4. ADR4520 Thermally Induced Output Voltage Hysteresis Distribution
Figure 7. ADR4520 Load Regulation vs. Temperature (Sourcing)
100
ADR4520
ADR4520
90
80
70
60
50
40
30
20
10
0
V
(5V/DIV)
IN
1
V
(1V/DIV)
OUT
C
C
R
= 0.1µF
= 0.1µF
= 1kΩ
IN
OUT
2
L
CH1 5.00V CH2 1.00V
M40.0µs
A CH1
9.10V
–60 –40 –20
0
20
40
60
80
100 120 140
TEMPERATURE (°C)
Figure 8. ADR4520 Load Regulation vs. Temperature (Sinking)
Figure 5. ADR4520 Output Voltage Start-Up Response
Rev. 0 | Page 11 of 32
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
1k
100
10
ADR4520
ADR4520
1
0.01
–60 –40 –20
0
20
40
60
80
100 120 140
0.1
1
10
100
1k
10k
100k
TEMPERATURE (°C)
FREQUENCY (Hz)
Figure 9. ADR4520 Line Regulation vs. Temperature
Figure 12. ADR4520 Output Noise Spectral Density
1000
800
600
400
200
0
0
–10
ADR4520
ADR4520
C
= 1µF
LOAD
+125°C
–20
–30
–40
–50
+25°C
–40°C
–60
–70
–80
–90
–100
–110
–120
10
100
1k
10k
100k
1M
10M
100M
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
FREQUENCY (Hz)
V
(V)
IN
Figure 13. ADR4520 Ripple Rejection Ratio vs. Frequency
Figure 10. ADR4520 Supply Current vs. Supply Voltage
120
100
80
60
40
20
0
T
ADR4520
ADR4520
INPUT
2
OUTPUT AC
C
C
= 0.1µF
IN
= 1µF
OUT
1
B
CH1 1.00V CH2 1.00mV
M40.0µs
12.0%
A CH1
7.02V
W
0.4
0.7
1.0
1.3
1.6
1.9
2.2
2.5
2.8
T
OUTPUT VOLTAGE NOISE DISTRIBUTION (µV p-p)
Figure 11. ADR4520 Output Voltage Noise
(Maximum Amplitude from 0.1 Hz to 10 Hz)
Figure 14. ADR4520 Line Transient Response
Rev. 0 | Page 12 of 32
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
60
80
ADR4520
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
60
40
50
40
30
20
10
0
R
C
= 1kΩ
= 1µF
20
L
L
R
C
= 1kΩ
= 10µF
L
L
0
R
C
= 100kΩ
= 10µF
L
L
–20
–40
–60
–80
R
L
= 100kΩ
= 1µF
C
L
10
100
1k
10k
100k
1M
0
100 200 300 400 500 600 700 800 900 1000
DURATION (Hours)
FREQUENCY (Hz)
Figure 17. ADR4520 Typical Long-Term Output Voltage Drift
(1000 Hours)
Figure 15. ADR4520 Output Impedance vs. Frequency
12
10
8
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
6
4
2
0
OUTPUT VOLTAGE (%)
Figure 16. ADR4520 Output Voltage Drift Distribution After Reflow (SHR Drift)
Rev. 0 | Page 13 of 32
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
ADR4525
2.5005
2.5004
2.5003
2.5002
2.5001
2.5000
2.4999
2.4998
2.4997
2.4996
2.4995
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
ADR4525
ADR4525
+25°C
+125°C
–40°C
–50
–30
–10
10
30
50
70
90
110
130
–15
–10
–5
0
5
10
15
TEMPERATURE (°C)
I
(mA)
LOAD
Figure 21. ADR4525 Dropout Voltage vs. Load Current
Figure 18. ADR4525 Output Voltage vs. Temperature
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
35
30
25
20
15
10
5
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
ADR4525
0
–60 –40 –20
0
20
40
60
80
100 120 140
TEMPERATURE (°C)
ΔV
(ppm)
OUT_HYS
Figure 19. ADR4525 Thermally Induced Output Voltage Hysteresis Distribution
Figure 22. ADR4525 Load Regulation vs. Temperature (Sourcing)
100
ADR4525
ADR4525
90
80
70
60
50
40
30
20
10
0
V
(5V/DIV)
(1V/DIV)
IN
1
V
OUT
2
CH1 5.00V CH2 1.00V
M40.0µs
A
CH1
9.10V
–60 –40 –20
0
20
40
60
80
100 120 140
TEMPERATURE (°C)
Figure 20. ADR4525 Output Voltage Start-Up Response
Figure 23. ADR4525 Load Regulation vs. Temperature (Sinking)
Rev. 0 | Page 14 of 32
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
1k
ADR4525
ADR4525
100
10
1
0.4
–60 –40 –20
0
20
40
60
80
100 120 140
0.01
0.1
1
10
100
1k
10k
100k
TEMPERATURE (°C)
FREQUENCY (Hz)
Figure 24. ADR4525 Line Regulation vs. Temperature
Figure 27. ADR4525 Output Noise Spectral Density
900
800
700
600
500
400
300
200
100
0
0
–10
ADR4525
ADR4525
+125°C
+25°C
–20
–30
–40
–40°C
–50
–60
–70
–80
–90
–100
–110
–120
10
100
1k
10k
100k
1M
10M
100M
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
FREQUENCY (Hz)
V
(V)
IN
Figure 28. ADR4525 Ripple Rejection Ratio vs. Frequency
Figure 25. ADR4525 Supply Current vs. Supply Voltage
160
140
120
100
80
T
ADR4525
ADR4525
INPUT
2
1
60
OUTPUT AC
40
20
C
C
= 0.1µF
IN
= 1µF
OUT
0
B
CH1 1.00V CH2 1.00mV
M200µs
10.0%
A CH1
4.08V
W
0.6
0.9
1.2
1.5
1.8
2.1
2.4
2.7
3.0
T
OUTPUT VOLTAGE NOISE DISTRIBUTION (µV p-p)
Figure 26. ADR4525 Output Voltage Noise
(Maximum Amplitude from 0.1 Hz to 10 Hz)
Figure 29. ADR4525 Line Transient Response
Rev. 0 | Page 15 of 32
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
80
70
60
50
40
30
20
10
0
80
ADR4525
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
60
40
R
C
= 1kΩ
= 1µF
L
L
20
R
C
= 1kΩ
= 10µF
L
L
0
R
C
= 100kΩ
= 1µF
L
L
–20
–40
–60
–80
R
C
= 100kΩ
= 10µF
L
L
10
100
1k
10k
100k
1M
0
100 200 300 400 500 600 700 800 900 1000
DURATION (Hours)
FREQUENCY (Hz)
Figure 32. ADR4525 Typical Long-Term Output Voltage Drift
(1000 Hours)
Figure 30. ADR4525 Output Impedance vs. Frequency
12
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
10
8
6
4
2
0
OUTPUT VOLTAGE (%)
Figure 31. ADR4525 Output Voltage Drift Distribution After Reflow (SHR Drift)
Rev. 0 | Page 16 of 32
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
ADR4530
0.0009
3.0005
ADR4530
ADR4530
+125°C
+25°C
3.0004
3.0003
3.0002
3.0001
3.0000
2.9999
2.9998
2.9997
2.9996
2.9995
0.0008
0.0007
0.0006
0.0005
0.0004
0.0003
0.0002
0.0001
0
–40°C
–50
–30
–10
10
30
50
70
90
110
130
0
1
2
3
4
5
6
7
8
9
10 11 12 13
TEMPERATURE (°C)
V
(V)
IN
Figure 36. ADR4530 Supply Current vs. Supply Voltage
Figure 33. ADR4530 Output Voltage vs. Temperature
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
ADR4530
+125°C
+25°C
–40°C
–15
–10
–5
0
5
10
15
I
(mA)
LOAD
ΔV
(ppm)
OUT_HYS
Figure 34. ADR4530 Thermally Induced Output Voltage Hysteresis Distribution
Figure 37. ADR4530 Dropout Voltage vs. Load Current
35
30
25
20
15
10
5
ADR4530
V
(5V/DIV)
ADR4530
IN
1
2
V
(1V/DIV)
M40.0µs
OUT
C
C
R
= 0.1µF
IN
= 0.1µF
OUT
= 1kΩ
L
0
CH1 5.00V CH2 1.00V
A CH1
3.10V
–60 –40 –20
0
20
40
60
80
100 120 140
TEMPERATURE (°C)
Figure 35. ADR4530 Output Voltage Start-Up Response
Figure 38. ADR4530 Load Regulation vs. Temperature (Sourcing)
Rev. 0 | Page 17 of 32
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
ADR4530
ADR4530
–60 –40 –20
0
20
40
60
80
100 120 140
TEMPERATURE (°C)
OUTPUT VOLTAGE NOISE DISTRIBUTION (µV p-p)
Figure 39. ADR4530 Load Regulation vs. Temperature (Sinking)
Figure 42. ADR4530 Output Voltage Noise
(Maximum Amplitude from 0.1 Hz to 10 Hz)
1.4
1k
ADR4530
ADR4530
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
100
10
1
0.01
–60 –40 –20
0
20
40
60
80
100 120 140
0.1
1
10
100
1k
10k
100k
TEMPERATURE (°C)
FREQUENCY (Hz)
Figure 40. ADR4530 Line Regulation vs. Temperature
Figure 43. ADR4530 Output Noise Spectral Density
900
800
700
600
500
400
300
200
100
0
0
–10
ADR4530
ADR4530
–40°C
–20
–30
+125°C
–40
+25°C
–50
–60
–70
–80
–90
–100
–110
–120
10
100
1k
10k
100k
1M
10M
100M
0
1
2
3
4
5
6
7
8
9
10 11 12 13
FREQUENCY (Hz)
V
(V)
IN
Figure 44. ADR4530 Ripple Rejection Ratio vs. Frequency
Figure 41. ADR4530 Supply Current vs. Supply Voltage
Rev. 0 | Page 18 of 32
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
12
T
ADR4530
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
10
8
INPUT
6
2
4
OUTPUT AC
2
C
C
= 0.1µF
IN
= 1µF
OUT
1
0
B
CH1 1.00V CH2 1.00mV
M200µs
10.0%
A CH1
7.02V
W
T
OUTPUT VOLTAGE (%)
Figure 45. ADR4530 Line Transient Response
Figure 47. ADR4530 Output Voltage Drift Distribution After Reflow (SHR Drift)
60
50
40
30
20
10
0
80
ADR4530
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
60
40
20
0
R
C
= 1kΩ
= 10µF
L
L
R
C
= 1kΩ
= 1µF
L
L
–20
–40
–60
–80
R
C
= 100kΩ
= 10µF
R
C
= 100kΩ
= 1µF
L
L
L
L
1
10
100
1k
10k
100k
1M
10M
0
100 200 300 400 500 600 700 800 900 1000
DURATION (Hours)
FREQUENCY (Hz)
Figure 48. ADR4530 Typical Long-Term Output Voltage Drift
(1000 Hours)
Figure 46. ADR4530 Output Impedance vs. Frequency
Rev. 0 | Page 19 of 32
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
ADR4533
3.3010
3.3008
3.3006
3.3004
3.3002
3.3000
3.2998
3.2996
3.2994
3.2992
3.2990
1.0
0.8
0.6
0.4
0.2
0
ADR4533
ADR4533
+125°C
+25°C
–40°C
–15
–10
–5
0
5
10
15
–50
–30
–10
10
30
50
70
90
110
130
I
(mA)
TEMPERATURE (°C)
LOAD
Figure 52. ADR4533 Dropout Voltage vs. Load Current
Figure 49. ADR4533 Output Voltage vs. Temperature
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
35
30
25
20
15
10
5
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
ADR4533
0
–60 –40 –20
0
20
40
60
80
100 120 140
TEMPERATURE (°C)
ΔV
(ppm)
OUT_HYS
Figure 53. ADR4533 Load Regulation vs. Temperature (Sourcing)
Figure 50. ADR4533 Thermally Induced Output Voltage Hysteresis Distribution
100
ADR4533
V
(5V/DIV)
ADR4533
IN
90
80
70
60
50
40
30
20
10
0
1
2
V
(1V/DIV)
M40.0µs
OUT
C
C
R
= 0.1µF
= 0.1µF
= 1kΩ
IN
OUT
L
CH1 5.00V CH2 1.00V
A CH1
3.10V
–60 –40 –20
0
20
40
60
80
100 120 140
TEMPERATURE (°C)
Figure 51. ADR4533 Output Voltage Start-Up Response
Figure 54. ADR4533 Load Regulation vs. Temperature (Sinking)
Rev. 0 | Page 20 of 32
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
1k
ADR4533
ADR4533
100
10
1
0.2
–60 –40 –20
0
20
40
60
80
100 120 140
0.01
0.1
1
10
100
1k
10k
100k
TEMPERATURE (°C)
FREQUENCY (Hz)
Figure 55. ADR4533 Line Regulation vs. Temperature
Figure 58. ADR4533 Output Noise Spectral Density
900
800
700
600
500
400
300
200
100
0
0
–10
ADR4533
+125°C
ADR4533
–20
–30
+25°C
–40°C
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
0.01
0.1
1
10
100
1k
10k
100k
V
(V)
IN
FREQUENCY (kHz)
Figure 56. ADR4533 Supply Current vs. Supply Voltage
Figure 59. ADR4533 Ripple Rejection Ratio vs. Frequency
60
50
40
30
20
10
0
T
ADR4533
ADR4533
INPUT
2
OUTPUT AC
C
C
= 0.1µF
= 1µF
IN
OUT
1
B
CH1 1.00V CH2 1.00mV
M200µs
12.0%
A CH1
7.02V
W
T
OUTPUT VOLTAGE NOISE DISTRIBUTION (µV p-p)
Figure 57. ADR4533 Output Voltage Noise
(Maximum Amplitude from 0.1 Hz to 10 Hz)
Figure 60. ADR4533 Line Transient Response
Rev. 0 | Page 21 of 32
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
60
50
40
30
20
10
0
80
ADR4533
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
60
40
20
R
C
= 1kΩ
= 1µF
0
L
L
R
C
= 1kΩ
= 10µF
L
L
–20
–40
–60
–80
R
C
= 100kΩ
= 10µF
R
C
= 100kΩ
= 1µF
L
L
L
L
1
10
100
1k
10k
100k
1M
10M
0
100 200 300 400 500 600 700 800 900 1000
DURATION (Hours)
FREQUENCY (Hz)
Figure 63. ADR4533 Typical Long-Term Output Voltage Drift
(1000 Hours)
Figure 61. ADR4533 Output Impedance vs. Frequency
12
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
10
8
6
4
2
0
OUTPUT VOLTAGE (%)
Figure 62. ADR4533 Output Voltage Drift Distribution After Reflow (SHR Drift)
Rev. 0 | Page 22 of 32
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
ADR4540
4.0970
0.8
ADR4540
ADR4540
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
+125°C
4.0965
4.0960
4.0955
4.0950
+25°C
–40°C
–50
–30
–10
10
30
50
70
90
110
130
–15
–10
–5
0
5
10
15
TEMPERATURE (°C)
I
(mA)
LOAD
Figure 67. ADR4540 Dropout Voltage vs. Load Current
Figure 64. ADR4540 Output Voltage vs. Temperature
35
30
25
20
15
10
5
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
ADR4540
0
–60 –40 –20
0
20
40
60
80
100 120 140
TEMPERATURE (°C)
ΔV
(ppm)
OUT_HYS
Figure 68. ADR4540 Load Regulation vs. Temperature (Sourcing)
Figure 65. ADR4540 Thermally Induced Output Voltage Hysteresis Distribution
100
ADR4540
V
(5V/DIV)
ADR4540
IN
90
80
70
60
50
40
30
20
10
0
1
2
V
(1V/DIV)
M40.0µs
OUT
C
C
R
= 0.1µF
= 0.1µF
= 1kΩ
IN
OUT
L
CH1 5.00V CH2 1.00V
A CH1
3.10V
–60 –40 –20
0
20
40
60
80
100 120 140
TEMPERATURE (°C)
Figure 66. ADR4540 Output Voltage Start-Up Response
Figure 69. ADR4540 Load Regulation vs. Temperature (Sinking)
Rev. 0 | Page 23 of 32
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1k
100
10
ADR4540
ADR4540
1
0.01
–60 –40 –20
0
20
40
60
80
100 120 140
0.1
1
10
100
1k
10k
100k
TEMPERATURE (°C)
FREQUENCY (Hz)
Figure 70. ADR4540 Line Regulation vs. Temperature
Figure 73. ADR4540 Output Noise Spectral Density
900
800
700
600
500
400
300
200
100
0
0
–10
ADR4540
+125°C
ADR4540
–20
–30
+25°C
–40°C
–40
–50
–60
–70
–80
–90
–100
–110
–120
10
100
1k
10k
100k
1M
10M
100M
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
FREQUENCY (Hz)
V
(V)
IN
Figure 74. ADR4540 Ripple Rejection Ratio vs. Frequency
Figure 71. ADR4540 Supply Current vs. Supply Voltage
70
T
ADR4540
ADR4540
60
50
40
30
20
10
0
INPUT
2
OUTPUT AC
C
C
= 0.1µF
IN
= 1µF
OUT
1
B
CH1 1.00V CH2 1.00mV
M200µs
12.0%
A CH1
7.02V
W
T
OUTPUT VOLTAGE NOISE DISTRIBUTION (µV p-p)
Figure 72. ADR4540 Output Voltage Noise
(Maximum Amplitude from 0.1 Hz to 10 Hz)
Figure 75. ADR4540 Line Transient Response
Rev. 0 | Page 24 of 32
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
60
80
ADR4540
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
60
40
50
40
30
R
C
= 100kΩ
= 1µF
L
L
20
R
C
= 100kΩ
= 10µF
L
L
0
R
C
= 1kΩ
= 10µF
L
L
R
C
= 1kΩ
= 1µF
–20
–40
–60
–80
L
L
20
10
0
1
10
100
1k
10k
100k
1M
10M
0
100 200 300 400 500 600 700 800 900 1000
DURATION (Hours)
FREQUENCY (Hz)
Figure 76. ADR4540 Output Impedance vs. Frequency
Figure 78. ADR4540 Typical Long-Term Output Voltage Drift
(1000 Hours)
12
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
10
8
6
4
2
0
OUTPUT VOLTAGE (%)
Figure 77. ADR4540 Output Voltage Drift Distribution After Reflow (SHR Drift)
Rev. 0 | Page 25 of 32
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
ADR4550
5.0010
5.0005
5.0000
4.9995
4.9990
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
ADR4550
ADR4550
+25°C
+125°C
–40°C
–50
–30
–10
10
30
50
70
90
110
130
–15
–10
–5
0
5
10
15
TEMPERATURE (°C)
I
(mA)
LOAD
Figure 82. ADR4550 Dropout Voltage vs. Load Current
Figure 79. ADR4550 Output Voltage vs. Temperature
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
35
30
25
20
15
10
5
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
ADR4550
0
–60 –40 –20
0
20
40
60
80
100 120 140
TEMPERATURE (°C)
ΔV
(ppm)
OUT_HYS
Figure 80. ADR4550 Thermally Induced Output Voltage Hysteresis Distribution
Figure 83. ADR4550 Load Regulation vs. Temperature (Sourcing)
100
ADR4550
ADR4550
90
80
70
60
50
40
30
20
10
0
V
(5V/DIV)
IN
V
(1V/DIV)
OUT
1
2
CH1 5.00V CH2 1.00V
M40.0µs
A
CH1
9.10V
–60 –40 –20
0
20
40
60
80
100 120 140
TEMPERATURE (°C)
Figure 84. ADR4550 Load Regulation vs. Temperature (Sinking)
Figure 81. ADR4550 Output Voltage Start-Up Response
Rev. 0 | Page 26 of 32
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
1k
ADR4550
ADR4550
100
10
1
0
–50
0
50
100
150
0.01
0.1
1
10
100
1k
10k
100k
TEMPERATURE (°C)
FREQUENCY (Hz)
Figure 85. ADR4550 Line Regulation vs. Temperature
Figure 88. ADR4550 Output Noise Spectral Density
900
800
700
600
500
400
300
200
100
0
0
–20
ADR4550
+125°C
ADR4550
+25°C
–40°C
–40
–60
–80
–100
–120
0.01
0.1
1
10
100
1k
10k
100k
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
FREQUENCY (Hz)
V
(V)
IN
Figure 86. ADR4550 Supply Current vs. Supply Voltage
Figure 89. ADR4550 Ripple Rejection Ratio vs. Frequency
9
T
ADR4550
ADR4550
8
7
6
5
4
3
2
1
0
INPUT
2
OUTPUT AC
C
C
= 0.1µF
IN
= 1µF
OUT
1
B
CH1 1.00V CH2 1.00mV
M200µs
12.0%
A CH1
7.02V
W
1.9 2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5 3.7
OUTPUT VOLTAGE NOISE DISTRIBUTION (µV p-p)
T
Figure 87. ADR4550 Output Voltage Noise
(Maximum Amplitude from 0.1 Hz to 10 Hz)
Figure 90. ADR4550 Line Transient Response
Rev. 0 | Page 27 of 32
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
140
120
100
80
80
ADR4550
R
C
= 100kΩ
= 0.1µF
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
L
L
60
R
C
= 100kΩ
= 1µF
L
L
40
20
R
C
= 1kΩ
= 0.1µF
L
L
0
60
–20
–40
–60
–80
40
R
C
= 1kΩ
= 1µF
L
L
20
0
10
100
1k
10k
100k
1M
0
100 200 300 400 500 600 700 800 900 1000
DURATION (Hours)
FREQUENCY (Hz)
Figure 93. ADR4550 Typical Long-Term Output Voltage Drift
(1000 Hours)
Figure 91. ADR4550 Output Impedance vs. Frequency
12
10
8
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
6
4
2
0
OUTPUT VOLTAGE (%)
Figure 92. ADR4550 Output Voltage Drift Distribution After Reflow (SHR Drift)
Rev. 0 | Page 28 of 32
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
TERMINOLOGY
Long-Term Stability (ΔVOUT_LTD
)
Dropout Voltage (VDO
)
Long-term stability refers to the shift in the output voltage at 60°C
after 1000 hours of operation in a 60°C environment. The ambient
temperature is kept at 60°C to ensure that the temperature chamber
does not switch randomly between heating and cooling, which
can cause instability over the 1000 hour measurement. This is
also expressed as either a shift in voltage or a difference in ppm
from the nominal output.
Dropout voltage, sometimes referred to as supply voltage
headroom or supply output voltage differential, is defined as the
minimum voltage differential between the input and output such
that the output voltage is maintained to within 0.1% accuracy.
VDO = (VIN − VOUT)min|IL = constant
Because the dropout voltage depends on the current passing
through the device, it is always specified for a given load current.
In series mode devices, the dropout voltage typically increases
proportionally to the load current (see Figure 6, Figure 21,
Figure 37, Figure 52, Figure 67, and Figure 82).
VOUT (t1)−VOUT (t0 )
∆VOUT _ LTD
=
×106 [ppm]
VOUT (t0 )
where:
Temperature Coefficient (TCVOUT
)
V
V
OUT(t0) is the VOUT at 60°C at Time 0.
OUT(t1) is the VOUT at 60°C after 1000 hours of operation at 60°C.
The temperature coefficient relates the change in the output
voltage to the change in the ambient temperature of the device, as
normalized by the output voltage at 25°C. This parameter is
determined by the box method, which is represented by the
following equation:
Line Regulation
Line regulation refers to the change in output voltage in response
to a given change in input voltage and is expressed in percent
per volt, ppm per volt, or μV per volt change in input voltage.
This parameter accounts for the effects of self-heating.
max{VOUT (T1 ,T2 ,T3 )}−min{VOUT (T1 ,T2 ,T3 )}
TCVOUT
=
×106
VOUT (T2 )× (T3 −T1 )
Load Regulation
Load regulation refers to the change in output voltage in response
to a given change in load current and is expressed in μV per mA,
ppm per mA, or ohms of dc output resistance. This parameter
accounts for the effects of self-heating.
where:
TCVOUT is expressed in ppm/°C.
OUT(Tx) is the output voltage at Temperature Tx.
T1 = −40°C.
T2 = +25°C.
T3 = +125°C.
V
Solder Heat Resistance (SHR) Shift
SHR shift refers to the permanent shift in output voltage that is
induced by exposure to reflow soldering and is expressed in units
of ppm. This shift is caused by changes in the stress exhibited
on the die by the package materials when these materials are
exposed to high temperatures. This effect is more pronounced
in lead-free soldering processes due to higher reflow temperatures.
This three-point method ensures that TCVOUT accurately portrays
the maximum difference between any of the three temperatures
at which the output voltage of the part is measured.
The TCVOUT for the ADR4520/ADR4525/ADR4530/ADR4533/
ADR4540/ADR4550 is fully tested over three temperatures:
−40°C, +25°C, and +125°C.
Thermally Induced Output Voltage Hysteresis (ΔVOUT_HYS
Thermally induced output voltage hysteresis represents the
change in the output voltage after the device is exposed to a
)
specified temperature cycle. This is expressed as either a shift in
voltage or a difference in ppm from the nominal output.
V
OUT _25°C −VOUT _TC
∆VOUT _ HYS
=
×106
[ppm]
VOUT _25°C
where:
V
V
OUT_25°C is the output voltage at 25°C.
OUT_TC is the output voltage after temperature cycling.
Rev. 0 | Page 29 of 32
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
THEORY OF OPERATION
Data Sheet
The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/
ADR4550 series of references uses a unique core topology for
extremely high accuracy, stability, and noise performance.
Effect of Long-Term Drift on Voltage References, at www.analog.com
for more information regarding the effects of long-term drift
and how it can be minimized.
Three parameters contribute to the accuracy of the dc output of
a voltage reference: initial accuracy, temperature coefficient, and
long-term drift. With an outstanding guaranteed initial error of
0.02% and a low temperature coefficient of 2 ppm/°C maximum,
this series of voltage references is perfect for high precision
applications. The industry-leading long-term stability of the
devices means that systems need less frequent field calibration
and that there is a reduction in the costly preshipment system
burn-in time.
POWER DISSIPATION
The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/
ADR4550 voltage references are capable of sourcing and sinking
up to 10 mA of load current at room temperature across the rated
input voltage range. However, when used in applications subject
to high ambient temperatures, the input voltage and load current
should be carefully monitored to ensure that the device does not
exceeded its maximum power dissipation rating. The maximum
power dissipation of the device can be calculated via the
following equation:
LONG-TERM DRIFT
One of the key parameters of the ADR4520/ADR4525/ADR4530/
ADR4533/ADR4540/ADR4550 references is long-term
stability—the output drift over time that the device is powered
up. Regardless of output voltage, internal testing during
development showed a typical drift of approximately 25 ppm
after 1000 hours of continuous, nonloaded operation in a 60°C
extremely stable temperature controlled environment.
TJ −TA
PD =
θJA
where:
PD is the device power dissipation.
TJ is the device junction temperature.
TA is the ambient temperature.
θ
JA is the package (junction-to-air) thermal resistance.
Note that the majority of the long-term drift typically occurs in
the first 200 hours to 300 hours of operation. For systems that
require highly stable output voltages over long periods of time,
the designer should consider burning in the devices prior to use
to minimize the amount of output drift exhibited by the
reference over time. See the AN-713 Application Note, The
Due to this relationship, acceptable load current in high
temperature conditions may be less than the maximum current
sourcing capability of the device. In no case should the part be
operated outside of its maximum power rating because doing so
may result in premature failure or permanent damage to the device.
Rev. 0 | Page 30 of 32
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
APPLICATIONS INFORMATION
BASIC VOLTAGE REFERENCE CONNECTION
SAMPLE APPLICATIONS
Bipolar Output Reference
The circuit shown in Figure 94 illustrates the basic configuration
for the ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/
ADR4550 family of voltage references.
Figure 95 shows a bipolar reference configuration. By connecting
the output of the ADR4550 to the inverting terminal of an
operational amplifier, it is possible to obtain both positive and
negative reference voltages. R1 and R2 must be matched as closely
as possible to ensure minimal difference between the negative
and positive outputs. Resistors with low temperature coefficients
must also be used if the circuit is used in environments with large
temperature swings; otherwise, a voltage difference develops
between the two outputs as the ambient temperature changes.
V
IN
BAND GAP
V
REF
2
6
V
+5V
V
V
OUT
IN
IN
R1
10kΩ
GND
1µF
0.1µF
0.1µF
Figure 94. ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Simplified Schematic
ADR4550
R2
10kΩ
4
GND
INPUT AND OUTPUT CAPACITORS
+15V
Input Capacitors
–5V
ADA4000-1
A 1 μF to 10 μF electrolytic or ceramic capacitor can be connected
to the input to improve transient response in applications where
the supply voltage may fluctuate. An additional 0.1 μF ceramic
capacitor should be connected in parallel to reduce supply noise.
R3
5kΩ
–15V
Figure 95. ADR4550 Bipolar Output Reference
Output Capacitors
Boosted Output Current Reference
An output capacitor is required for stability and to filter out low
level voltage noise. The minimum value of the output capacitor
is shown in Table 12.
Figure 96 shows a configuration for obtaining higher current
drive capability from the ADR4520/ADR4525/ADR4530/
ADR4533/ADR4540/ADR4550 references without sacrificing
accuracy. The op amp regulates the current flow through the
MOSFET until VOUT equals the output voltage of the reference;
current is then drawn directly from VIN instead of from the
reference itself, allowing increased current drive capability.
Table 12. Minimum COUT Value
Part Number
Minimum COUT Value
ADR4520, ADR4525
ADR4530, ADR4533,
ADR4540, ADR4550
1.0 µF
0.1 µF
V
IN
+16V
U6
R1
An additional 1 μF to 10 μF electrolytic or ceramic capacitor can be
added in parallel to improve transient performance in response to
sudden changes in load current; however, the designer should keep
in mind that doing so will increase the turn-on time of the device.
2N7002
100Ω
2
6
V
V
OUT
IN
AD8663
V
OUT
1µF 0.1µF
ADR4520/ADR4525/
ADR4530/ADR4533/
ADR4540/ADR4550
C
L
0.1µF
R
200Ω
L
C
L
LOCATION OF REFERENCE IN SYSTEM
PART
NUMBER
MINIMUM
L
The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/
ADR4550 reference should be placed as close to the load as possible
to minimize the length of the output traces and, therefore, the error
introduced by the voltage drop. Current flowing through a PCB
trace produces an IR voltage drop; with longer traces, this drop
can reach several millivolts or more, introducing considerable
error into the output voltage of the reference. A 1 inch long, 5 mm
wide trace of 1 ounce copper has a resistance of approximately
100 mΩ at room temperature; at a load current of 10 mA, this
can introduce a full millivolt of error.
C
4
GND
ADR4520, 1.0µF
ADR4525
ADR4530, 0.1µF
ADR4533,
ADR4540,
ADR4550
Figure 96. Boosted Output Current Reference
Because the current-sourcing capability of this circuit depends only
on the ID rating of the MOSFET, the output drive capability can
be adjusted to the application simply by choosing an appropriate
MOSFET. In all cases, the VOUT pin should be tied directly to the
load device to maintain maximum output voltage accuracy.
Rev. 0 | Page 31 of 32
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
OUTLINE DIMENSIONS
Data Sheet
5.00 (0.1968)
4.80 (0.1890)
8
1
5
4
6.20 (0.2441)
5.80 (0.2284)
4.00 (0.1574)
3.80 (0.1497)
0.50 (0.0196)
0.25 (0.0099)
1.27 (0.0500)
BSC
45°
1.75 (0.0688)
1.35 (0.0532)
0.25 (0.0098)
0.10 (0.0040)
8°
0°
0.51 (0.0201)
0.31 (0.0122)
COPLANARITY
0.10
1.27 (0.0500)
0.40 (0.0157)
0.25 (0.0098)
0.17 (0.0067)
SEATING
PLANE
COMPLIANT TO JEDEC STANDARDS MS-012-AA
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
Figure 97. 8-Lead Standard Small Outline Package [SOIC_N]
Narrow Body
(R-8)
Dimensions shown in millimeters and (inches)
ORDERING GUIDE
Model1
Temperature Range
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
Package Description
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
Package Option
Ordering Quantity
ADR4520ARZ
ADR4520ARZ-R7
ADR4520BRZ
ADR4520BRZ-R7
ADR4525ARZ
ADR4525ARZ-R7
ADR4525BRZ
ADR4525BRZ-R7
ADR4530ARZ
ADR4530ARZ-R7
ADR4530BRZ
ADR4530BRZ-R7
ADR4533ARZ
ADR4533ARZ-R7
ADR4533BRZ
ADR4533BRZ-R7
ADR4540ARZ
ADR4540ARZ-R7
ADR4540BRZ
ADR4540BRZ-R7
ADR4550ARZ
ADR4550ARZ-R7
ADR4550BRZ
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
98
1,000
98
1,000
98
1,000
98
1,000
98
1,000
98
1,000
98
1,000
98
1,000
98
1,000
98
1,000
98
1,000
98
ADR4550BRZ-R7
1,000
1 Z = RoHS Compliant Part.
©2012 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D10203-0-4/12(0)
Rev. 0 | Page 32 of 32
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