X60008E-50 [INTERSIL]
Precision 5.0V FGA Voltage Reference; 精密5.0V FGA基准电压源
| 型号： | X60008E-50 |
| 厂家： | 
Intersil |
| 描述： | Precision 5.0V FGA Voltage Reference |
| 文件： | 总14页 (文件大小：293K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
X60008E-50
®
Data Sheet
March 14, 2005
FN8145.0
DESCRIPTION
Precision 5.0V FGA™ Voltage Reference
The X60008-50 FGA™ voltage references are very
high precision analog voltage references fabricated in
Intersil’s proprietary Floating Gate Analog technology,
which achieves superior levels of performance when
compared to conventional band gap, buried zener, or
FEATURES
• Output Voltage: 5.000V
• Absolute Initial Accuracy = ±5mV
• Ultra Low Power Supply Current: 500nA
• Low Temperature Coefficient = 20ppm/°C max
• 10 mA Source & Sink Current Capability
• 10 ppm/1000hrs Long Term Stability
• Very Low Dropout Voltage: 100 mV @ no load
• Supply Voltage Range: 5.1V to 9.0V
• 5kV ESD (Human Body Model)
X
™ technologies.
FET
FGA™ voltage references feature very high initial
accuracy, very low temperature coefficient, excellent
long term stability, low noise and excellent line and
load regulation, at the lowest power consumption
currently available. These voltage references enable
advanced applications for precision industrial &
portable systems operating at significantly higher
accuracy and lower power levels than can be achieved
with conventional technologies.
• Standard Package: SOIC-8
• Temp Range: -40°C to +85°C
APPLICATIONS
• High Resolution A/Ds & D/As
• Digital Meters
• Precision Current Sources
• Precision Regulators
• Smart sensors
• Strain Gage Bridges
• Threshold Detectors
• Servo Systems
• Calibration Systems
• V-F Converters
• Precision Oscillators
• Battery Management Systems
TYPICAL APPLICATION
VIN = +6.5V
0.1µF
10µF
VIN
VOUT
0.001µF(*)
X60008-50
GND
REF IN
Enable
SCK
SDAT
Serial
Bus
16 to 24-bit
A/D Converter
(*)Also see Figure 3 in Applications Information
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-352-6832 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005. All Rights Reserved
1
All other trademarks mentioned are the property of their respective owners.
X60008E-50
PACKAGE DIAGRAM
X60008-XX
SOIC
8
7
6
1
2
3
GND
VIN
DNC
DNC
VOUT
DNC
DNC
GND
5
4
PIN CONFIGURATIONS
Pin Name
Description
GND
VIN
Ground Connection
Power Supply Input Connection
Voltage Reference Output Connection
Do Not Connect; Internal Connection – Must Be Left Floating
VOUT
DNC
ORDERING INFORMATION
X 60008 E I S8 – 50
Logo
Device Part Number
Grade
60008 = Standard
E = ±5.0mV, 20 ppm/°C
I = -40°C to +85°C
S8 = 8 lead SOIC
50 = 5.000V
Temperature Range
Package
VOUT Option
FN8145.0
2
March 14, 2005
X60008E-50
ABSOLUTE MAXIMUM RATINGS
COMMENT
Storage Temperature Range............ -65°C to + 125°C
Voltage on any Pin
Referenced to Gnd.............................-0.5V to + 10V
Voltage on “DNC” pins.........No connections permitted
to these pins.
Absolute Maximum Ratings indicate limits beyond
which permanent damage to the device and impaired
reliability may occur. These are stress ratings provided
for information only and functional operation of the
device at these or any other conditions beyond those
indicated in the operational sections of this specifica-
tion are not implied.
Lead Temperature (soldering, 10 secs).......... + 225°C
RECOMMENDED OPERATING CONDITIONS
For guaranteed specifications and test conditions, see
Electrical Characteristics.
Temperature
Min.
Max.
Industrial
-40°C
+85°C
The guaranteed specifications apply only for the test
conditions listed. Some performance characteristics
may degrade when the device is not operated under
the listed test conditions.
ELECTRICAL CHARACTERISTICS
(Operating Conditions: V = 6.5V, I
= 0mA, C
= 0.001µF, T = -40 to +85°C unless otherwise specified.)
A
IN
OUT
OUT
Symbol
VOUT
Parameter
Output Voltage
Conditions
Min
Typ
Max
Units
V
5.000
VOA
VOUT Accuracy
X60008EIS8-50
TA = 25°C
mV
-5.0
5.1
+5.0
800
9.0
IIN
Supply Current
500
10
nA
V
VIN
Input Voltage Range
TC VOUT
Output Voltage
X60008EIS8-50
20
ppm/°C
Temperature Coefficient(1)
∆VOUT/∆VIN
∆VOUT/∆IOUT
Line Regulation
Load Regulation
+5.5V ≤ VIN ≤ +8.0V
150
µV/V
µV/mA
0mA ≤ ISOURCE ≤ 10mA
-10mA ≤ ISINK ≤ 0mA
15
25
50
100
∆VOUT/∆t
Long Term Stability
TA = 25°C
10
ppm/
1000Hrs
∆VOUT/∆TA
VDO
Thermal Hysteresis(2)
Dropout Voltage(3)
Short Circuit Current(4)
∆T = -40°C to +85°C
IOUT = 5mA, ∆VOUT = 0.01%
TA = 25°C
50
150
50
ppm
mV
300
80
ISC
mA
VN
Output Voltage Noise
0.1Hz to 10Hz
30
µVpp
Note: 1. Over the specified temperature range. Temperature coefficient is measured by the box method whereby the change in VOUT is divided
by the temperature range; in this case, -40°C to +85°C = 125°C.
2. Thermal Hysteresis is the change in VOUT created by package stress @ TA = 25°C after temperature cycling. VOUT is read initially at TA
= 25°C; the X60008 is then cycled between Hot (85°C) and Cold (-40°C) before a second VOUT measurement is taken at 25°C. The
deviation between the initial VOUT reading and the second VOUT reading is then expressed in ppm.
3. Dropout voltage (VDO) is the minimum voltage (VIN) into the X60008 which will produce the output voltage (∆VOUT) drop specified in the
Electrical Characteristics table.
4. Guaranteed by Device Characterization
FN8145.0
3
March 14, 2005
X60008E-50
TYPICAL PERFORMANCE CHARACTERISTIC CURVES
(V = 6.5V, I
= 0mA, T = 25°C unless otherwise specified)
IN
OUT
A
LINE REGULATION
LINE REGULATION
350
300
250
200
150
100
50
5.0004
5 Typical Units
5.0003
5.0002
5.0001
5.0000
-40°C
25°C
85°C
4.9999
4.9998
4.9997
0
-50
5
6
7
8
9
5
6
7
8
9
Vin (V)
Vin (V)
LOAD REGULATION
0.6
0.5
-40°C
0.4
0.3
0.2
0.1
0
25°C
85°C
-0.1
-0.2
-0.3
-20 -15 -10
-5
0
5
10
15
20
SINKING
SOURCING
OUTPUT CURRENT (mA)
0.1Hz to 10Hz VOUT NOISE
Band Pass Filter with 1 zero at .1Hz and 2 poles at 10 Hz
10 Sec/div
FN8145.0
March 14, 2005
4
X60008E-50
TYPICAL PERFORMANCE CHARACTERISTIC CURVES
(V = 6.5V, I
= 0mA, T = 25°C unless otherwise specified)
IN
OUT
A
VOUT vs TEMPERATURE
PSRR vs CAP LOAD
Normalized to 25°C
0
-10
-20
5.0020
4 Typical Units
C =0
L
5.0015
5.0010
C =.001µF
L
-30
-40
5.0005
5.0000
C =.01µF
L
-50
-60
-70
-80
4.9995
4.9990
4.9985
4.9980
C =.1µF
L
-40C
-15C
10C
+35C +60C +85C
1 Hz 10 Hz 100Hz 1kHz 10kHz 100kHz 1 MHz
FREQUENCY (Hz)
TEMPERATURE (C)
10mA LOAD TRANSIENT RESPONSE
10mA LOAD TRANSIENT RESPONSE
CL = .01µF
CL = .001µF
∆IIN = -10mA
∆IIN = -10mA
∆IIN = +10mA
∆IIN = +10mA
500µSEC/DIV
500µSEC/DIV
10mA LOAD TRANSIENT RESPONSE
CL = .1µF
∆IIN = -10mA
∆IIN = +10mA
500µSEC/DIV
FN8145.0
5
March 14, 2005
X60008E-50
TYPICAL PERFORMANCE CHARACTERISTIC CURVES
(V = 6.5V, I = 0mA, T = 25°C unless otherwise specified)
IN
OUT
A
50µA LOAD TRANSIENT RESPONSE
50µA LOAD TRANSIENT RESPONSE
CL = .001µF
CL = .01µF
∆IIN = -50µA
∆IIN = -50µA
∆IIN = +50µA
∆IIN = +50µA
100µSEC/DIV
200µSEC/DIV
50µA LOAD TRANSIENT RESPONSE
CL = .1µF
∆IIN = -50µA
∆IIN = +50µA
1mSEC/DIV
FN8145.0
6
March 14, 2005
X60008E-50
TYPICAL PERFORMANCE CHARACTERISTIC CURVES
(V = 6.5V, I = 0mA, T = 25°C unless otherwise specified)
IN
OUT
A
LINE TRANSIENT RESPONSE
LINE TRANSIENT RESPONSE
CL = 0
CL = .001µF
∆VIN = -500mV
∆VIN = +500mV
∆VIN = -500mV
∆VIN = +500mV
500µSEC/DIV
500µSEC/DIV
LINE TRANSIENT RESPONSE
LINE TRANSIENT RESPONSE
CL = .1µF
CL = .01µF
∆VIN = -500mV
∆VIN = +500mV
∆VIN = -500mV
∆VIN = +500mV
500µSEC/DIV
500µSEC/DIV
MINIMUM VIN to VOUT DIFFERENTIAL
vs. OUTPUT CURRENT
Zout vs FREQUENCY
0.50
500.0
400.0
0.45
0.40
0.35
0.30
+85C
C =.001µF
L
C =.01µF
L
+25C
300.0
200.0
100.0
0.25
0.20
0.15
0.10
0.05
0
-40C
C =.1µF
L
0.01
10
100
1K
10K
100K
0
-2
-4
-6
-8
-10
FREQUENCY (Hz)
OUTPUT CURRENT (mA)
FN8145.0
March 14, 2005
7
X60008E-50
TYPICAL PERFORMANCE CHARACTERISTIC CURVES
(V = 6.5V, I
= 0mA, T = 25°C unless otherwise specified)
IN
OUT
A
IIN vs VIN
IIN vs VIN
900
700
-40°C
+25°C
800
700
600
500
400
300
600
500
+85°C
400
300
200
5 units representative of I range
IN
200
100
0
100
0
5.5
6
6.5
7
7.5
8
8.5
9
5.5
6
6.5
7
7.5
8
8.5
9
VIN (V)
VIN (V)
TURN-ON TIME
7
V
IN
6
5
4
V
OUT
3
2
1
0
0
2
4
6
8
10
TIME (mSec)
FN8145.0
March 14, 2005
8
X60008E-50
APPLICATIONS INFORMATION
FGA Technology
Other reference devices consuming higher supply cur-
rents will need to be disabled in between conversions
to conserve battery capacity. Absolute accuracy will
suffer as the device is biased and requires time to set-
tle to its final value, or, may not actually settle to a final
value as power-on time may be short.
The X60008 series of voltage references use the float-
ing gate technology to create references with very low
drift and supply current. Essentially the charge stored
on a floating gate cell is set precisely in manufacturing.
The reference voltage output itself is a buffered ver-
sion of the floating gate voltage. The resulting refer-
ence device has excellent characteristics which are
unique in the industry: very low temperature drift, high
initial accuracy, and almost zero supply current. Also,
the reference voltage itself is not limited by voltage
bandgaps or zener settings, so a wide range of refer-
ence voltages can be programmed (standard voltage
settings are provided, but customer-specific voltages
are available).
Figure 1.
VIN = +6-9V
10µF
0.01µF
VIN
VOUT
X60008-50
GND
0.001µF-0.01µF
REF IN
Enable
SCK
SDAT
Serial
Bus
The process used for these reference devices is a
floating gate CMOS process, and the amplifier circuitry
uses CMOS transistors for amplifier and output tran-
sistor circuitry. While providing excellent accuracy,
there are limitations in output noise level and load reg-
ulation due to the MOS device characteristics. These
limitations are addressed with circuit techniques dis-
cussed in other sections.
12 to 24-bit
A/D Converter
Board mounting Considerations
For applications requiring the highest accuracy, board
mounting location should be reviewed. Placing the
device in areas subject to slight twisting can cause
degradation of the accuracy of the reference voltage
due to die stresses. It is normally best to place the
device near the edge of a board, or the shortest side,
as the axis of bending is most limited at that location.
Obviously mounting the device on flexprint or
extremely thin PC material will likewise cause loss of
reference accuracy.
Nanopower Operation
Reference devices achieve their highest accuracy
when powered up continuously, and after initial stabili-
zation has taken place. For example, power-up drift on
a high accuracy reference can reach 20ppm or more
in the first 30 seconds, and generally will settle to a
stable value in 100 hours or so. This drift can be elimi-
nated by leaving the power-on continuously.
The X60008 is the first high precision voltage reference
with ultra low power consumption that makes it possible
to leave power-on continuously in battery operated cir-
cuits. The X60008 consumes extremely low supply cur-
rent due to the proprietary FGA technology. Supply
current at room temperature is typically 500nA which is
1 to 2 orders of magnitude lower than competitive
devices. Application circuits using battery power will
benefit greatly from having an accurate, stable refer-
ence which essentially presents no load to the battery.
Noise Performance and Reduction:
The output noise voltage in a 0.1Hz to 10Hz bandwidth
is typically 30µVp-p. This is shown in the plot in the
Typical Performance Curves. The noise measurement
is made with a bandpass filter made of a 1 pole high-
pass filter with a corner frequency at .1Hz and a 2-pole
low-pass filter with a corner frequency at 12.6Hz to
create a filter with a 9.9Hz bandwidth. Noise in the
10KHz to 1MHz bandwidth is approximately 400µVp-p
with no capacitance on the output, as shown in Fig. 2
below. These noise measurements are made with a 2
decade bandpass filter made of a 1 pole high-pass filter
with a corner frequency at 1/10 of the center frequency
and 1-pole low-pass filter with a corner frequency at 10
times the center frequency. Figure 2 also shows the
noise in the 10KHz to 1MHz band can be reduced to
about 50µVp-p using a .001µF capacitor on the output.
Noise in the 1KHz to 100KHz band can be further
reduced using a 0.1µF capacitor on the output, but
In particular, battery powered data converter circuits
that would normally require the entire circuit to be dis-
abled when not in use can remain powered up
between conversions as shown in figure 1. Data acqui-
sition circuits providing 12 to 24 bits of accuracy can
operate with the reference device continuously biased
with no power penalty, providing the highest accuracy
and lowest possible long term drift.
FN8145.0
9
March 14, 2005
X60008E-50
noise in the 1Hz to 100Hz band increases due to
Figure 4.
instability of the very low power amplifier with a 0.1µF
capacitance load. For load capacitances above
.001µF the noise reduction network shown in fig. 3 is
recommended. This network reduces noise sig-
nificantly over the full bandwidth. As shown in fig. 2,
noise is reduced to less than 40µVp-p from 1Hz to
1MHz using this network with a .01µF capacitor and a
2kΩ resistor in series with a 10µF capacitor.
X60008-50 TURN-ON TIME (25°C)
7
6
5
4
3
I
= 730nA
IN
I
= 500nA
IN
I
= 320nA
IN
Figure 2.
2
1
X60008-50 NOISE REDUCTION
400
CL = 0
0
-1
350
1
3
5
7
9
11
13
15
CL = .001µF
CL = .1µF
TIME (mSec)
300
CL = .01µF & 10µF + 2kΩ
250
Temperature Coefficient
200
150
100
The limits stated for temperature coefficient (tempco)
are governed by the method of measurement. The
overwhelming standard for specifying the temperature
drift of a reference is to measure the reference voltage
at two temperatures, take the total variation, (V
-
HIGH
50
0
V
), and divide by the temperature extremes of
LOW
measurement (T
- T
). The result is divided by
HIGH
LOW
1
10
100
1000
10000
100000
the nominal reference voltage (at T = 25°C) and multi-
6
plied by 10 to yield ppm/°C. This is the “Box” method
for temperature coefficient which allows comparison of
devices but can mislead a designer concerned about
specific ranges of temperature (i.e., 35°C to 65°C for a
power supply design). The designer may infer the
tempco to be a well-behaved flat line slope, similar to
that shown in Figure 5. The slope of the Vout vs. tem-
perature curve at points in-between the extremes can
actually be much higher than the tempco stated in the
specifications due to multiple inflections in the temper-
ature drift curve. Most notably, bandgap devices may
have some type of “s-curve” which will have slopes
that exceed the average specified tempco by 2x or 3x.
Figure 3.
VIN = 6.5V
VIN
10µF
VO
.1µF
X60008-50
GND
2kΩ
.01µF
10µF
Turn-On Time
The X60008 devices have ultra-low supply current and
thus the time to bias up internal circuitry to final values
will be longer than with higher power references. Nor-
mal turn-on time is typically 7ms. This is shown in the
graph, Figure 4. Since devices can vary in supply cur-
rent down to 300nA, turn-on time can last up to about
12ms. Care should be taken in system design to
include this delay before measurements or conver-
sions are started.
FN8145.0
10
March 14, 2005
X60008E-50
Figure 5. Flat Line Slope Tempco Curves
(Vout = 5V)
The tempco curve for the X60008 devices is generally
flat (within 0.5ppm/°C typically) over the industrial tem-
perature range (-40 to 85°C) with some inflection at
the extreme temperatures. The combination of very
low tempco performance a predictable tempco slope is
unique to the X60008 due to its floating gate technol-
ogy. This behavior is much easier to consider when
designing data conversion systems or control systems
that must operate over a range of temperatures.
Temp-Co (Normalized to +25°C)
10.0
20ppm/°C
5.0
0.0
-5.0
20ppm/°C
-10.0
-40°C
25°C
85°C
Temperature
FN8145.0
11
March 14, 2005
X60008E-50
TYPICAL APPLICATION CIRCUITS
Precision 5V, 50mA Reference.
VIN = 6V-9V
R = 200Ω
2N2905
VIN
X60008-50
VOUT
5.0V/50mA
0.009µF
GND
±5.0V Dual Output, High Accuracy Reference
+5.3-9.0V
0.1µF
VIN
X60008-50
VOUT
5.0V
0.001µF
0.001µF
GND
VIN
X60008-50
5.0V - VIN
IOUT
R1 =
; IOUT ≤ 10mA
VOUT
GND
R1
-VIN = -5.5V to -9.0V
-5.0V
Kelvin Sensed Load
+5.3-9.0V
0.1µF
VIN
VOUT
+
–
V
OUT Sense
Load
X60008-50
GND
FN8145.0
12
March 14, 2005
X60008E-50
TYPICAL APPLICATION CIRCUITS
Negative Voltage Reference
X60008-50
R
VIN
VOUT
GND
CIN 0.001
COUT = 0.001µF
-5.0V
R1 = 200
R1 Limits max load current
with RI = 200Ω; ILOAD MAX = 4mA
-9V
5V Full Scale Low-Drift 10-bit Adjustable Voltage Source
5.3-9.0V
0.1µF
VIN
VOUT
X60008-50
GND
0.01µF
VCC
X9119
SDA
SCL
RH
VOUT
+
–
2-Wire Bus
VOUT
(buffered)
VSS RL
FN8145.0
13
March 14, 2005
X60008E-50
PACKAGING INFORMATION
8-Lead Plastic, SOIC, Package Code S8
0.150 (3.80) 0.228 (5.80)
0.158 (4.00) 0.244 (6.20)
Pin 1 Index
Pin 1
0.014 (0.35)
0.019 (0.49)
0.188 (4.78)
0.197 (5.00)
(4X) 7°
0.053 (1.35)
0.069 (1.75)
0.004 (0.19)
0.010 (0.25)
0.050 (1.27)
0.010 (0.25)
0.050" Typical
X 45°
0.020 (0.50)
0.050"
Typical
0° - 8°
0.0075 (0.19)
0.010 (0.25)
0.250"
0.016 (0.410)
0.037 (0.937)
0.030"
Typical
8 Places
FOOTPRINT
NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
FN8145.0
14
March 14, 2005
相关型号：
©2020 ICPDF网 联系我们和版权申明