MAX6072AAUB41+ [MAXIM]
High-Precision, Dual-Output Series Voltage Reference;
| 型号： | MAX6072AAUB41+ |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | High-Precision, Dual-Output Series Voltage Reference |
| 文件： | 总21页 (文件大小：1279K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MAX6072
High-Precision, Dual-Output Series
Voltage Reference
General Description
The MAX6072 is a dual-output precision series voltage
Benefits and Features
● Low Temperature Coefficient Ensures Stable System
reference. The product features two outputs, +V
Over Wide Temperature Ranges
REF
and +V
/2. The device exhibits a very low 1/f noise of
• A-grade: 6ppm/°C (max)
• B-grade: 8ppm/°C (max)
REF
2ppm (peak-to-peak). Each output can source and sink
10mA and has an independent sense line. This product
has a temperature drift of 6ppm/°C (max) over the ambi-
ent temperature range of -40°C to +125°C and an initial
accuracy of 0.04%. Three pairs of output voltages are
available: 5V/2.5V, 4.096V/2.048V, and 2.5V/1.25V. The
product operates with an input voltage range of 2.8V to
5.5V and has sufficient headroom for the highest voltage.
It consumes a mere 150µA (typ) of quiescent supply cur-
rent per reference. The dual voltage outputs make this
device ideal for precision ADC applications where the
● Excellent Long-Term Drift Ensures Accurate Signal
Chain Readings Over Time
• 15ppm Drift Over 1,000 Hours
● Dual References (V
and V
/2) Provide ADC/
REF
REF
DAC Reference and Common-Mode Reference
• MAX6072__50: V
• MAX6072__41: V
• MAX6072__25: V
= 5V, V
= 4.096V, V
= 2.5V, V
/ = 2.5V
REF
REF
REF
REF 2
/ = 2.048V
REF 2
/ = 1.25V
REF 2
● Low Thermal Hysteresis Ensures Consistent Results
input signal needs to be referred to V
/2.
REF
Through Temperature Cycles
®
The MAX6072 is available in a 10-pin μMAX package
and is specified for operation over the extended -40°C to
+125°C industrial temperature range.
• 85ppm
• 2.5ppm Thermal Hysteresis Tracking
● Separate Enable-Control for Each Output Allows
Applications
Independent Control
● ADC/DAC References and Common-Mode Set-Point
● Test and Measurement/ATE
● Low Power for Battery-/Loop-Powered Sensors:
150μA/Reference
● High-Accuracy Industrial and Process Control
● Portable Medical
Typical Operating Circuit and Ordering Information appears
at end of data sheet.
For related parts and recommended products to use with this part, refer
to www.maximintegrated.com/MAX6072.related.
Dual Reference Selector Guide
TEMPERATURE
ACCURACY (%)
PART
OUTPUT VOLTAGES (V)
COEFFICIENT (ppm/°C)
MAX6072AAUB50
MAX6072BAUB50
MAX6072AAUB41
MAX6072BAUB41
MAX6072AAUB25
MAX6072BAUB25
5/2.5
5/2.5
0.05
0.08
0.05
0.08
0.05
0.08
6
8
6
8
6
8
4.096/2.048
4.096/2.048
2.5/1.25
2.5/1.25
µMAX is a registered trademark of Maxim Integrated Products, Inc.
19-7483; Rev 0; 12/14
MAX6072
High-Precision, Dual-Output Series
Voltage Reference
Absolute Maximum Ratings
IN1, IN2 to GND......................................................-0.3V to +6V
OUT1F to GND............ -0.3V to the lower of (V
OUT2F to GND............ -0.3V to the lower of (V
OUT1S, OUT2S to GND .........................................-0.3V to +6V
EN1, EN2 to GND ...................................................-0.3V to +6V
Operating Temperature Range......................... -40°C to +125°C
Storage Temperature ....................................... -65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature ...................................................+260°C
+ 0.3V), +6V
+ 0.3V), +6V
IN1
IN2
Continuous Power Dissipation (T = +70°C)
A
µMAX (derate 5.6mW/°C above +70°C)......................444mW
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
(Note 1)
Package Thermal Characteristics
μMAX
Junction-to-Ambient Thermal Resistance (θ ) ........180°C/W
Junction-to-Case Thermal Resistance (θ )...............42°C/W
JC
JA
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
MAX6072_50 Electrical Characteristics (V
: V
= 5V, V
: V
= 2.5V)
REF1 OUT1F
REF2 OUT2F
(V
= V
= V
= V
= +5.5V, I
= 0mA, C
= 0.1μF, T = -40°C to +125°C, unless otherwise noted. Typical values are at
IN1
EN1
IN2
EN2
OUT
OUT A
T
=+25°C.) (Note 2)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT
MAX6072A_50, T = +25°C
-0.05
-0.08
+0.05
+0.08
6
Output Voltage Accuracy (OUT1F
and OUT2F)
A
%
MAX6072B_50, T = +25°C
A
MAX6072A_50
MAX6072B_50
1.5
2.0
Output Voltage Temperature Drift
(OUT1F and OUT2F) (Note 3)
TCV
ppm/°C
OUT
8
Output Voltage Temperature Drift
Tracking (OUT1F and OUT2F)
(Note 3)
MAX6072A_50
MAX6072B_50
0.4
∆TC
ppm/°C
0.4
T
T
= +25°C
200
620
700
260
275
A
OUT1F, 5.2V
< V < 5.5V
= -40°C to
A
IN1
+125°C
Line Regulation
μV/V
T
= +25°C
60
A
A
OUT2F, 2.8V
< V < 5.5V
T
= -40°C to
IN2
+125°C
0mA < I
< 10mA, sink
OUT
160
160
80
290
350
185
190
OUT1F
0mA < I
<
OUT
10mA, source
Load Regulation
μV/mA
0mA < I
OUT
< 10mA, sink
OUT2F
0mA < I
<
OUT
75
10mA, source
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MAX6072
High-Precision, Dual-Output Series
Voltage Reference
MAX6072_50 Electrical Characteristics (V
(continued)
: V
= 5V, V
: V
= 2.5V)
REF1 OUT1F
REF2 OUT2F
(V
= V
= V
= V
= +5.5V, I
= 0mA, C
= 0.1μF, T = -40°C to +125°C, unless otherwise noted. Typical values are at
IN1
EN1
IN2
EN2
OUT
OUT A
T
=+25°C.) (Note 2)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUT1F
(Note 6)
60
150
I
T
= 10mA,
= -40°C to
OUT
Dropout Voltage
mV
A
OUT2F
(Note 4)
+125°C
110
230
+10
Output Current (OUT1F and
OUT2F)
I
-10
mA
mA
OUT
Sourcing to ground
25
25
85
85
Short-Circuit Current (OUT1F and
OUT2F)
I
SC
Sinking from V
OUT1F
IN
Thermal Hysteresis (Note 5)
ppm
ppm
OUT2F
Thermal Hysteresis Tracking
(Note 5)
OUT2F to OUT1F
2.5
15
OUT1F, 1000 hours at
T
= +25°C
A
Long-Term Stability
ppm
ppm
OUT2F, 1000 hours at
= +25°C
15
5
T
A
Long-Term Drift Tracking
DYNAMIC CHARACTERISTICS
1/f noise,
0.1Hz to
OUT1F
OUT2F
OUT1F
OUT2F
OUT1F
OUT2F
9
4.8
15
6
μV
P-P
10Hz, C
=
OUT
0.1μF
Noise Voltage
e
OUT
Thermal
noise, 10Hz to
10kHz, C
= 0.1μF
μV
RMS
OUT
Thermal
noise, f=
120
60
Noise Voltage Spectral Density
nV/√Hz
1kHz, C
=
OUT
0.1μF
OUT1F
OUT2F
74
84
Frequency =
60Hz
Ripple Rejection
dB
Settling to
OUT1F
OUT2F
OUT1F
OUT2F
50
30
Turn- On Settling Time
t
0.01%, C
μs
R
OUT
= 0.1μF
Settling to
100
75
Enable Settling Time
t
0.01%, C
μs
EN
OUT
= 0.1μF
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MAX6072
High-Precision, Dual-Output Series
Voltage Reference
MAX6072_50 Electrical Characteristics (V
(continued)
: V
= 5V, V
: V
= 2.5V)
REF1 OUT1F
REF2 OUT2F
(V
= V
= V
= V
= +5.5V, I
= 0mA, C
= 0.1μF, T = -40°C to +125°C, unless otherwise noted. Typical values are at
IN1
EN1
IN2
EN2
OUT
OUT A
T
=+25°C.) (Note 2)
A
PARAMETER
SYMBOL
CONDITIONS
≤ 10mA
MIN
TYP
MAX
UNITS
Capacitive-Load Stability Range
(OUT1F, OUT2F)
I
0.1
10
μF
OUT
INPUT (IN1 and IN2)
Guaranteed
by line
regulation
OUT1F
OUT2F
5.2
2.8
5.5
5.5
Supply Voltage
V
V
IN
T
T
T
T
= +25°C
160
150
270
350
245
320
A
A
A
A
REF1 Quiescent Supply Current
REF2 Quiescent Supply Current
I
I
μA
IN
IN
= -40°C to +125°C
= +25°C
μA
μA
= -40°C to +125°C
Shutdown Supply Current per
Reference
I
V
= 0V
0.85
28
SD
EN
ENABLE (EN1 and En2)
Enable Input Current
Enable Logic- High
Enable Logic- Low
I
-1
+1
μA
V
EN
V
0.7 x V
IH
IN
V
0.3 x V
V
IL
IN
MAX6072_41 Electrical Characteristics (V
2.048V)
: V
= 4.096V, V
: V
=
REF1 OUT1F
REF2 OUT2F
(V
= V
= V
= V
= +5V, I
= 0mA, C
= 0.1μF, T = -40°C to +125°C, unless otherwise noted. Typical values are at
IN1
EN1
IN2
EN2
OUT
OUT A
T
=+25°C.) (Note 2)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT
MAX6072A_41, T = +25°C
-0.05
-0.08
+0.05
+0.08
6
Output Voltage Accuracy (OUT1F
and OUT2F)
A
%
MAX6072B_41, T = +25°C
A
MAX6072A_41
MAX6072B_41
1.5
2.0
Output Voltage Temperature Drift
(OUT1F and OUT2F) (Note 3)
TCV
ppm/°C
OUT
8
Output Voltage Temperature Drift
Tracking (OUT1F and OUT2F)
(Note 3)
MAX6072A_41
MAX6072B_41
0.4
∆TC
ppm/°C
0.4
T
T
= +25°C
100
450
485
250
270
A
OUT1F, 4.3V
< V < 5.5V
= -40°C to
A
IN1
+125°C
Line Regulation
μV/V
T
T
= +25°C
50
A
OUT2F, 2.7V
< V < 5.5V
= -40°C to
A
IN2
+125°C
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MAX6072
High-Precision, Dual-Output Series
Voltage Reference
MAX6072_41 Electrical Characteristics (V
2.048V) (continued)
: V
= 4.096V, V
: V
=
REF1 OUT1F
REF2 OUT2F
(V
= V
= V
= V
= +5V, I
= 0mA, C
= 0.1μF, T = -40°C to +125°C, unless otherwise noted. Typical values are at
IN1
EN1
IN2
EN2
OUT
OUT A
T
=+25°C.) (Note 2)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
0mA < I
10mA, sink
<
OUT
125
260
OUT1F
0mA < I
<
OUT
135
135
135
300
260
250
10mA, source
Load Regulation
μV/mA
0mA < I
<
OUT
10mA, sink
OUT2F
=
0mA < I
<
OUT
10mA, source
I
= 10mA, T
OUT
A
Dropout Voltage
-40°C to +125°C
(Note 6)
OUT1F
75
150
+10
mV
Output Current (OUT1F and
OUT2F)
I
-10
mA
mA
OUT
Sourcing to ground
25
25
85
85
Short-Circuit Current (OUT1F and
OUT2F)
I
SC
Sinking from V
OUT1F
IN
Thermal Hysteresis (Note 5)
ppm
ppm
OUT2F
Thermal Hysteresis Tracking
(Note 5)
OUT2F to OUT1F
2.5
15
OUT1F, 1000 hours at
T
= +25°C
A
Long-Term Stability
ppm
ppm
OUT2F, 1000 hours at
= +25°C
15
5
T
A
Long-Term Drift Matching
DYNAMIC CHARACTERISTICS
1/f noise,
0.1Hz to
OUT1F
9.6
6.4
12
μV
P-P
10Hz, C
=
OUT
OUT2F
OUT1F
OUT2F
0.1μF
Noise Voltage
e
OUT
Thermal
noise, 10Hz to
10kHz, C
= 0.1μF
μV
RMS
OUT
8.6
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MAX6072
High-Precision, Dual-Output Series
Voltage Reference
MAX6072_41 Electrical Characteristics (V
2.048V) (continued)
: V
= 4.096V, V
: V
=
REF1 OUT1F
REF2 OUT2F
(V
= V
= V
= V
= +5V, I
= 0mA, C
= 0.1μF, T = -40°C to +125°C, unless otherwise noted. Typical values are at
IN1
EN1
IN2
EN2
OUT
OUT A
T
=+25°C.) (Note 2)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Thermal
noise, f=
OUT1F
110
Noise Voltage Spectral Density
nV/√Hz
1kHz, C
=
OUT
OUT2F
75
0.1μF
OUT1F
OUT2F
80
86
Frequency =
60Hz
Ripple Rejection
dB
Settling to
OUT1F
OUT2F
OUT1F
OUT2F
40
25
85
65
Turn- On Settling Time
t
0.01%, C
μs
R
OUT
= 0.1μF
Settling to
Enable Settling Time
t
0.01%, C
μs
EN
OUT
= 0.1μF
Capacitive- Load Stability Range
(OUT1F, OUT2F)
I
≤ 10mA
0.1
10
μF
OUT
INPUT (IN1 and IN2)
Guaranteed
by line
regulation
OUT1F
OUT2F
4.3
2.7
5.5
5.5
Supply Voltage
V
V
IN
T
T
T
T
= +25°C
150
130
265
350
220
280
A
A
A
A
REF1 Quiescent Supply Current
REF2 Quiescent Supply Current
I
I
μA
IN
= -40°C to +125°C
= +25°C
μA
μA
IN
= -40°C to +125°C
Shutdown Supply Current per
Reference
I
V
= 0V
0.85
28
SD
EN
ENABLE (EN1 and EN2)
Enable Input Current
Enable Logic- High
I
-1
+1
μA
V
EN
V
0.7 x V
IH
IN
Enable Logic- Low
V
0.3 x V
V
IL
IN
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MAX6072
High-Precision, Dual-Output Series
Voltage Reference
MAX6072_25 Electrical Characteristics (V
: V
REF1 OUT1F
= 2.5V, V = 1.25V)
: V
REF2 OUT2F
(V
= V
= V
= V
= +5V, I
= 0mA, C
= 0.1μF, T =-40°C to +125°C, unless otherwise noted. Typical values are at
IN1
EN1
IN2
EN2
OUT
OUT A
T
=+25°C.) (Note 2)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT
-0.05
-0.08
+0.05
+0.08
6
MAX6072A_25, T = +25°C
Output Voltage Accuracy (OUT1F
and OUT2F)
A
%
MAX6072B_25, T = +25°C
A
1.5
2.0
MAX6072A_25
MAX6072B_25
Output Voltage Temperature Drift
(OUT1F and OUT2F, Note 3)
TCV
ppm/°C
OUT
8
Output Voltage Temperature Drift
Tracking (OUT1F and OUT2F)
(Note 3)
0.4
MAX6072A_25
MAX6072B_25
∆TC
ppm/°C
0.4
60
260
275
190
200
T
T
= +25°C
A
OUT1F, 2.8V
< V < 5.5V
= -40°C to
A
IN1
+125°C
μV/V
Line Regulation
13
T
T
= +25°C
A
OUT2F, 2.75V
< V < 5.5V
= -40°C to
A
IN2
+125°C
0mA < I
10mA, sink
<
OUT
80
75
185
190
185
190
OUT1F
0mA < I
<
OUT
10mA, source
μV/mA
Load Regulation
Dropout Voltage
0mA < I
<
OUT
70
10mA, sink
OUT2F
OUT1F
0mA < I
<
OUT
100
10mA, source
I
= 10mA,
OUT
T
= -40°C to
A
110
230
+10
mV
+125°C
(Note 6)
Output Current (OUT1F and
OUT2F)
I
-10
mA
mA
OUT
25
25
85
85
Sourcing to ground
Short-Circuit Current (OUT1F and
OUT2F)
I
SC
Sinking from V
OUT1F
IN
ppm
ppm
Thermal Hysteresis (Note 5)
OUT2F
Thermal Hysteresis Tracking
(Note 5)
2.5
15
OUT2F to OUT1F
OUT1F, 1000 hours at
T
= +25°C
A
Long-Term Stability
ppm
OUT2F, 1000 hours at
= +25°C
20
T
A
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MAX6072
High-Precision, Dual-Output Series
Voltage Reference
MAX6072_25 Electrical Characteristics (V
(continued)
: V
REF1 OUT1F
= 2.5V, V = 1.25V)
: V
REF2 OUT2F
(V
= V
= V
= V
= +5V, I
= 0mA, C
= 0.1μF, T =-40°C to +125°C, unless otherwise noted. Typical values are at
IN1
EN1
IN2
EN2
OUT
OUT A
T
=+25°C.) (Note 2)
A
PARAMETER
Long-Term Drift Tracking
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
7
ppm
DYNAMIC CHARACTERISTICS
1/f noise,
0.1Hz to
4.8
3.6
6
OUT1F
μV
P-P
10Hz, C
=
OUT
OUT2F
OUT1F
OUT2F
OUT1F
OUT2F
0.1μF
e
Noise Voltage
OUT
Thermal
noise, 10Hz to
10kHz, C
= 0.1μF
μV
RMS
OUT
5
Thermal
noise, f=
60
50
Noise Voltage Spectral Density
nV/√Hz
1kHz, C
=
OUT
0.1μF
84
OUT1F
OUT2F
Frequency =
60Hz
dB
Ripple Rejection
100
Settling to
30
20
75
60
OUT1F
OUT2F
OUT1F
OUT2F
t
μs
Turn-On Settling Time
0.01%, C
R
OUT
= 0.1μF
Settling to
t
μs
Enable Settling Time
0.01%, C
EN
OUT
= 0.1μF
Capacitive-Load Stability Range
(OUT1F, OUT2F)
0.1
10
μF
I
≤ 10mA
OUT
INPUT (IN1 and IN2)
Guaranteed
by line
regulation
2.8
5.5
5.5
OUT1F
OUT2F
V
V
Supply Voltage
IN
2.75
150
130
245
320
210
260
T
T
T
T
= +25°C
A
A
A
A
I
μA
REF1 Quiescent Supply Current
REF2 Quiescent Supply Current
IN
= -40°C to +125°C
= +25°C
I
μA
μA
IN
= -40°C to +125°C
Shutdown Supply Current per
Reference
I
0.6
28
V
= 0V
SD
EN
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MAX6072
High-Precision, Dual-Output Series
Voltage Reference
MAX6072_25 Electrical Characteristics (V
(continued)
: V
REF1 OUT1F
= 2.5V, V = 1.25V)
: V
REF2 OUT2F
(V
= V
= V
= V
= +5V, I
= 0mA, C
= 0.1μF, T =-40°C to +125°C, unless otherwise noted. Typical values are at
IN1
EN1
IN2
EN2
OUT
OUT A
T
=+25°C.) (Note 2)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ENABLE (EN1 and EN2)
Enable Input Current
Enable Logic-High
I
-1
+1
μA
V
EN
V
0.7 x V _
IN
IH
V
0.3 x V
IN_
V
Enable Logic-Low
IL
Note 2: All devices are 100% production tested at T = +25°C. Specifications over the entire operating temperature range are guar-
A
anteed by design and characterization. Typical specifications are at T = +25°C.
A
Note 3: Temperature coefficient is calculated using the “box method” which measures temperature drift as the maximum voltage
variation over a specified temperature range. The unit of measurement is ppm/°C.
Temperature coefficient matching (∆TC) ic calculated using the “box method” which measures temperature drift as the maxi-
mum variation of the difference between the normalized output voltages, V
and V
(over a specified
OUT2_NORM
OUT1_NORM
temperature range). The unit of measurement is ppm/°C, V
= [(V
(T) - V
(25°C))/V
(25°C)]
OUT
OUT_NORM
OUT
OUT
Note 4: Dropout voltage is defined as the minimum differential voltage (V - V
) at which V
decreases by 0.2% from its
IN
OUT
OUT
original value at V = 5.0V.
IN
Note 5: Thermal hysteresis is defined as the change in +25°C output voltage before and after cycling the device from T
to T
.
MAX
MIN
Thermal hysteresis matching is defined as the difference of the thermal hysteresis for each output (OUT1 and OUT2): ∆TH
= TH - TH
OUT2
OUT1
Note 6: Dropout voltage is defined as the minimum differential voltage (V - V
) at which V
decreases by 0.2% from its
IN
OUT
OUT
original value at V = 5.5V.
IN
Maxim Integrated
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MAX6072
High-Precision, Dual-Output Series
Voltage Reference
Typical Operating Characteristics
(V
C
= V
V
= V
= +5.5V (MAX6072_50), V
= V
V
= V
(MAX6072_41 and MAX6072_25), I = 0mA,
OUT
IN1
IN2 = EN1
EN2
IN1
IN2 = EN1
EN2
= 0.1μF, T = +25°C, unless otherwise noted.)
A
OUT
LONG TERM DRIFT
MAX6072_50
LONG-TERM DRIFT
MAX6072_50
(VOUT2 = VREF/2 = 2.5V)
LONG-TERM DRIFT
MAX6072_41
(VOUT1 = VREF = 4.096V)
V
OUT1 = VREF = 5.0V
toc1a
toc1b
toc1c
40
40
30
40
30
10 TYPICAL UNITS
10 TYPICAL UNITS
10 TYPICAL UNITS
30
20
20
20
10
10
10
0
0
0
-10
-20
-30
-40
-10
-20
-30
-40
-10
-20
-30
-40
0
200
400
600
800
1000 1200
0
200
400
600
800
1000 1200
0
200
400
600
800
1000 1200
DURATION (Hours)
DURATION (Hours)
DURATION (Hours)
LONG-TERM DRIFT
MAX6072_25
LONG-TERM DRIFT
MAX6072_25
(VOUT1 = VREF = 2.5V)
LONG-TERM DRIFT
MAX6072_41
(VOUT2 = VREF/2 = 2.048V)
VOUT2 = VREF/2 = 1.25V
toc1f
toc1e
toc1d
40
30
40
30
40
30
10 TYPICAL UNITS
10 TYPICAL UNITS
TYPICAL 10 UNITS
20
20
20
10
10
10
0
0
0
-10
-20
-30
-40
-10
-20
-30
-40
-10
-20
-30
-40
0
200
400
600
800
1000 1200
0
200
400
600
800
1000 1200
0
200
400
600
800
1000 1200
DURATION (Hours)
DURATION (Hours)
DURATION (Hours)
4.096V V
OUT
2.5V V
OUT
1.25V V
OUT
VOLTAGE TEMPERATURE DRIFT
VOLTAGE TEMPERATURE DRIFT
VOLTAGE TEMPERATURE DRIFT
toc02c
toc02b
toc02a
4.0975
4.0970
4.0965
4.0960
4.0955
4.0950
4.0945
2.5010
2.5005
2.5000
2.4995
2.4990
1.2505
1.2502
1.2500
1.2497
1.2495
-50 -25
0
25
50
75 100 125
-50 -25
0
25
50
75 100 125
-50 -25
0
25
50
75 100 125
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
Maxim Integrated
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MAX6072A/MAX6072B
High-Precision, Dual-Output Series
Voltage References
Typical Operating Characteristics (continued)
(V
C
= V
V
= V
= +5.5V (MAX6072_50), V
= V
V
= V
(MAX6072_41 and MAX6072_25), I = 0mA,
OUT
IN1
IN2 = EN1
EN2
IN1
IN2 = EN1
EN2
= 0.1μF, T = +25°C, unless otherwise noted.)
A
OUT
2.5V V
2.5V V
OUT
LOAD REGULATION
OUT
LINE REGULATION
toc03
toc04
2.5010
2.5005
2.5000
2.4995
2.4990
2.5020
2.5015
2.5010
2.5005
2.5000
2.4995
2.4990
2.4985
T
= +85°C
A
T
A
= +125°C
T
= 0°C
A
T
= -40°C
A
2.7
3.4
4.1
4.8
5.5
-10
-5
0
5
10
INPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
1.25V V
OUT
PSRR vs. FREQUENCY
2.5V V
OUT
PSRR vs. FREQUENCY
4.096V V
OUT
PSRR vs. FREQUENCY
toc05a
toc05c
toc05b
120
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
100
80
60
40
20
0
0
10
100
1k
10k
100k
10
100
1k
10k
100k
10
100
1k
10k
100k
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
4.096V V
OUT
2.5V V
OUT
1.25V V
OUT
OUTPUT IMPEDANCE vs. FREQUENCY
OUTPUT IMPEDANCE vs. FREQUENCY
OUTPUT IMPEDANCE vs. FREQUENCY
toc06c
toc06b
toc06a
1.2
1.0
0.8
0.6
0.4
0.2
0
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1mA
SOURCING
1mA
1mA
SOURCING
SOURCING
1mA
1mA
1mA
SINKING
SINKING
SINKING
10
100
1k
10k
100k
10
100
1k
10k
100k
10
100
1k
10k
100k
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
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MAX6072
High-Precision, Dual-Output Series
Voltage Reference
Typical Operating Characteristics (continued)
(V
C
= V
V
= V
= +5.5V (MAX6072_50), V
= V
V
= V
(MAX6072_41 and MAX6072_25), I
= 0mA,
OUT
IN1
IN2 = EN1
EN2
IN1
IN2 = EN1
EN2
= 0.1μF, T = +25°C, unless otherwise noted.)
A
OUT
1.25V V
OUT
2.5V V
OUT
4.096V V
OUT
SUPPLY CURRENT vs. TEMPERATURE
SUPPLY CURRENT vs. TEMPERATURE
SUPPLY CURRENT vs. TEMPERATURE
toc07a
toc07b
toc07c
200
250
250
200
150
100
50
180
160
140
120
100
80
V
IN
= 5.5V
V
IN
= 5.5V
V
IN
= 5.5V
200
150
100
50
V
IN
= 2.7V
V
IN
= 4.3V
V
IN
= 2.8V
60
40
20
0
0
0
-50 -25
0
25
50
75 100 125
-50 -25
0
25
50
75 100 125
-50 -25
0
25
50
75 100 125
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
1.25V V
OUTPUT NOISE
2.5V V
OUTPUT NOISE
4.096V V
OUTPUT NOISE
OUT
OUT
OUT
(0.1Hz TO 10Hz)
(0.1Hz TO 10Hz)
(0.1Hz TO 10Hz)
toc08a
toc08b
toc08c
V
OUT
= 1.25V
V
OUT
= 2.50V
V
OUT
= 4.096V
2µV/div
4µV/div
2µV/div
1s/div
1s/div
1s/div
1.25V V
OUTPUT NOISE DENSITY
4.096V V
OUTPUT NOISE DENSITY
OUT
vs. FREQUENCY
2.5V V
OUTPUT NOISE DENSITY
vs. FREQUENCY
OUT
vs. FREQUENCY
OUT
toc09a
toc09c
toc09b
1k
100
10
1k
100
10
1k
100
10
C
= 0µF
F
C
= 0µF
F
C
= 0µF
F
C
= 0.1µF
F
C
= 0.1µF
F
C
= 0.1µF
F
1
1
1
10
100
1k
10k
10
100
1k
10k
10
100
1k
10k
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
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MAX6072
High-Precision, Dual-Output Series
Voltage Reference
Typical Operating Characteristics (continued)
(V
C
= V
V
= V
= +5.5V (MAX6072_50), V
= V
V
= V
(MAX6072_41 and MAX6072_25), I
= 0mA,
OUT
IN1
IN2 = EN1
EN2
IN1
IN2 = EN1
EN2
= 0.1μF, T = +25°C, unless otherwise noted.)
A
OUT
1.25V V
TURN-ON TRANSIENT
toc10a
OUT
2.5V V
TURN-ON TRANSIENT
4.096V V
TURN-ON TRANSIENT
OUT
toc10c
OUT
toc10b
V
= 5V
IN
V = 5V
IN
0.01% SETTLING
TIME = 21µs
V
IN
= 0V
V
IN
= 0V
0.01% SETTLING
TIME = 33µs
0.01% SETTLING
TIME = 41µs
V
IN
V
= 5V
IN
= 1.25V
V
= 2.5V
0V
OUT
V
OUT
V
OUT
= 4.096V
V
OUT
0V
V
= 0V
OUT
V
OUT
= 0V
10µs/div
10µs/div
10µs/div
1.25V V
1ꢀ0m ꢁOmA TꢂmꢃNSIꢃT
2.5V V
±±10m ꢀOmA TꢁmꢂNSIꢂT
OUT
OUT
(C
OUT
= ꢀ.1µF)
(C
= 1.±µF)
OUT
toc11a
toc11b
V
OUT
V
OUT
V
OUT
= 1.25V
V
OUT
= 2.5V
200mV/div
500mV/div
SINK 10mA
SOURCE
10mA
SINK 10mA
SOURCE
10mA
I
I
OUT
OUT
10µs/div
10µs/div
4.096V V
±±0ꢀm ꢁOmA TꢂmꢃNSIꢃT
1.25V V
LINE TRANSIENT
(C = 0.1µF)
OUT
OUT
(C
OUT
= 0.±µF)
OUT
toc11c
toc12a
V
IN
= 4.35V
V
OUT
V
IN
200mV/div
V
OUT
= 4.096V
1V/div
V
IN
= 3.85V
SINK 10mA
SOURCE
10mA
V
OUT
20mV/div
I
OUT
10µs/div
20µs/div
Maxim Integrated
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MAX6072
High-Precision, Dual-Output Series
Voltage Reference
Typical Operating Characteristics (continued)
(V
C
= V
V
= V
= +5.5V (MAX6072_50), V
= V
V
= V
(MAX6072_41 and MAX6072_25), I
= 0mA,
OUT
IN1
IN2 = EN1
EN2
IN1
IN2 = EN1
EN2
= 0.1μF, T = +25°C, unless otherwise noted.)
A
OUT
4.096V V
LINE TRANSIENT
= 0.1µF)
2.5V V
LINE TRANSIENT
OUT
(C
OUT
(C
= 0.1µF)
OUT
OUT
toc12c
toc12b
V
IN
= 5.25V
V
IN
= 4.35V
V
V
IN
IN
200mV/div
V
IN
= 4.75V
V
IN
= 3.85V
200mV/div
V
OUT
V
OUT
200mV/div
20mV/div
20µs/div
20µs/div
2.5V V
OUT
ENABLE TRANSIENT
toc14
1.25V V
ENABLE TRANSIENT
OUT
toc13
V
IN
= 5V
V
OUT
= 5V
0.01% SETTLING
TIME = 63µs
IN
= 1.25V
V
IN
= 0V
V
IN
= 0V
V
0.01% SETTLING TIME = 75µs
V
OUT
= 2.5V
V
OUT
= 0V
V
OUT
= 0V
10µs/div
10µs/div
4.096V V
ENABLE TRANSIENT
toc15
OUT
V
= 5V
IN
V
IN
= 0V
0.01% SETTLING TIME = 85µs
V
OUT
= 4.096V
V
OUT
= 0V
10µs/div
Maxim Integrated
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MAX6072
High-Precision, Dual-Output Series
Voltage Reference
Pin Configuration
TOP VIEW
+
OUT1F
OUT1S
GND
10
1
2
3
4
5
IN1
9
8
EN1
MAX6072
µMAX
GND
7
6
OUT2S
OUT2F
EN2
IN2
Pin Description
PIN
NAME
FUNCTION
V
Reference 1 (V
) Force Output. Short OUT1F to OUT1S as close as possible to the
OUT1F
REF
1
OUT1F
load. Bypass with a capacitor (0.1μF to 10μF) to GND.
2
3, 8
4
OUT1S
GND
EN2
V
Voltage Reference 1 (V Sense
REF
OUT1S)
Ground. Both the pins 3 and 8 must be externally connected to a solid ground plane.
Voltage Reference 2 Enable Input. Drive high to enable V
Voltage Reference 2 Supply Input
. Drive low to disable V
.
REF2
REF2
5
IN2
V
/2 Voltage Reference 2 (V
) Force Output. Short OUT2F to OUT2S as close as possible
OUT2F
REF
6
OUT2F
to the load. Bypass with a capacitor (0.1μF to 10μF) to GND.
7
9
OUT2S
EN1
V
/2 Voltage Reference 2 (V ) Sense
REF
OUT2S
Voltage Reference 1 Enable Input. Drive high to enable V
Voltage Reference 1 Supply Input
. Drive low to disable V
.
REF1
REF1
10
IN1
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MAX6072
High-Precision, Dual-Output Series
Voltage Reference
Functional Diagram
OUT1F
OUT1S
IN2
IN1 IN
IN
OUT2S
OUT2F
BANDGAP
VOLTAGE
REFERENCE
BANDGAP
VOLTAGE
REFERENCE
MAX6072
EN1
EN2
GND
GND
Supply Voltage
Detailed Description
Each of the MAX6072 references offers individual supply
voltage inputs (IN1 and IN2). IN1 supplies the power to
Output Force and Sense
The MAX6072 provides independent Kelvin connections
for the power-circuit output (OUTF) supplying current
to the load and the circuit input regulating the voltage
applied to that load (OUTS). This configuration allows for
the cancellation of the voltage drop on the lines connect-
ing the MAX6072 and the load. When using the Kelvin
connection made possible by the independent current
and voltage connections, connect OUTF to the load and
connect OUTS to OUTF at the point where the voltage
accuracy is most needed (see Figure 1).
V
and IN2 for V
. Each of the two references
REF1
REF2
can be powered up separately or from the same supply
voltage by shorting IN1 and IN2 together.
SUPPLY
IN1 IN2
EN1
EN2
LOAD
LOAD
OUT1F
OUT1S
Output Bypassing
0.1μF
TO
10μF
The MAX6072 requires an output capacitor between
0.1μF and 10μF. Place the output capacitor as close to
OUT_F as possible. For applications driving switching
capacitive loads or rapidly changing load currents, use a
10μF capacitor in parallel with a 0.1μF capacitor. Larger
capacitor values reduce transients on the reference out-
put.
MAX6072
OUT2F
OUT2S
0.1μF
0.1μF
TO
10μF
Figure 1. Reference Output Kelvin Connection
Maxim Integrated
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MAX6072
High-Precision, Dual-Output Series
Voltage Reference
ences are present in the same package, they exhibit the
same thermal trend in variation.
Thermal Hysteresis
Thermal hysteresis is the change of output voltage at T =
A
+25°C before and after the device is cycled over its entire
operating temperature range. The typical thermal hyster-
esis value is 85ppm.
Dual Referencing Fully Differential Amplifier
and ADC
Applications employing a fully differential amplifier and
ADC in a signal chain typically require maintaining the
Turn-On Time
input(s) at half the V
(V) for the common-mode volt-
REF
The device typically turns on and settles to within 0.01%
of their final value in 25μs to 40μs. The turn-on time can
increase up to 4ms with the device operating at the mini-
mum dropout voltage and the maximum load.
age being applied to the ADC. For this purpose, either
a second reference with the value V
=
REF_DIFF_AMP
V
/2, or an op amp is often used as output common-
REF
mode biasing. The MAX6072A/B series is used with
ease in these situations, where V can be
REF_DIFF_AMP
Applications Information
referenced from the V
available from the part. This
REF2
Accurate Reference by Using the Other Refer-
ence Output as the Supply Input
In certain applications where only a single reference is
required, the dual reference can be used as a single ref-
way, both the V
and V
/2 to the ADC and the dif-
REF
REF
ferential amplifier are provided by the same part providing
improved accuracy and lesser board space. See Figure 3.
The Typical Operating Circuit shows MAX6072A_41 used
in a signal chain, performing single-ended to differential
conversion.
erence output when one of its references (V
where
OUT1F
V
> V ) is used as the supply input for the
OUT2F
OUT1F
second internal reference of the part (see Figure 2). By
doing so, the output reference accuracy is improved as
the PSRR performance improves. Since both the refer-
NOISY SUPPLY
EN1 IN1
OUT1F
OUT1S
REFERENCE 1:VOUT1
0.1μF
MAX6072
OUT2F
OUT2S
LOAD
EN2
IN2
REFERENCE 2:VOUT2
0.1μF TO
10μF
0.1μF TO
10μF
Figure 2. Increasing the Accuracy of Reference
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MAX6072
High-Precision, Dual-Output Series
Voltage Reference
2.8V to 5.5V
IN1 EN1 EN2 IN2
V
REF2
= 1.250V
OUT2F
OUT2S
OUT1F
OUT1S
10µF
10µF
MAX6072_25
GND
1nF
V
REF1
= 2.500V
+5V
VS+
1kΩ
1kΩ
3.3V
1μF
-
VSIG
+
VCLPH
2.5V
VREF
10Ω
AVDD
OUT+
AIN+
1.250V
VOCM
MAX44205
2nF
0.1µF
OUT-
AIN-
GND
VCM
10Ω
VCLPL
-
VS-
VSIG
+
-5V
1kΩ
1kΩ
1nF
Figure 3. Fully Differential Amplifier and ADC with Dual Referencing from MAX6072_25
Maxim Integrated
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MAX6072
High-Precision, Dual-Output Series
Voltage Reference
Typical Operating Circuit
5.5V
IN1 EN1 EN2 IN2
V
= 2.048V
REF2
OUT2F
OUT2S
OUT1F
OUT1S
10µF
10µF
MAX6072_41
GND
+2V
0V
1nF
-2V
1kΩ
+5.5V
1kΩ
V
= 4.096V
REF1
-
VSIG
5V
1µF
+
VS+
VCLPH
4.096V
VREF
10Ω
2.048V
2.048V
AVDD
OUT+
AIN+
2.048V
VOCM
MAX44205
2nF
0.1µF
OUT-
AIN-
GND
10Ω
VCLPL
VS-
-5.5V
1kΩ
1kΩ
1nF
SINGLE-ENDED TO DIFFERENTIAL CONVERSION
Maxim Integrated
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MAX6072
High-Precision, Dual-Output Series
Voltage Reference
Ordering Information
Chip Information
PROCESS: BiCMOS
PIN-
PART
V
/V
REF1 REF2
PACKAGE
MAX6072AAUB25+
MAX6072AAUB41+
MAX6072AAUB50+
MAX6072BAUB25+
MAX6072BAUB41+
MAX6072BAUB50+
10 μMAX
10 μMAX
10 μMAX
10 μMAX
10 μMAX
10 μMAX
2.500V/1.250V
4.096V/2.048V
5.000V/2.500V
2.500V/1.250V
4.096V/2.048V
5.000V/2.500V
Package Information
For the latest package outline information and land patterns
(footprints), go to www.maximintegrated.com/packages. Note
that a “+”, “#”, or “-” in the package code indicates RoHS status
only. Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
PACKAGE PACKAGE
LAND
PATTERN NO.
Note: All devices are specified over the -40°C to +125°C oper-
ating temperature range.
OUTLINE NO.
21-0061
TYPE
CODE
10 µMAX
U10M+5
90-0330
+Denotes a lead(Pb)-free/RoHS-compliant package.
Maxim Integrated
│ 20
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MAX6072
High-Precision, Dual-Output Series
Voltage Reference
Revision History
REVISION REVISION
PAGES
CHANGED
DESCRIPTION
NUMBER
DATE
0
12/14
Initial release
—
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
©
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
2014 Maxim Integrated Products, Inc.
│ 21
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