ADR439ARMZ [ROCHESTER]
1-OUTPUT THREE TERM VOLTAGE REFERENCE, 4.5 V, PDSO8, ROHS COMPLIANT, MO-187AA, MSOP-8;
| 型号： | ADR439ARMZ |
| 厂家： | 
Rochester Electronics |
| 描述： | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 4.5 V, PDSO8, ROHS COMPLIANT, MO-187AA, MSOP-8 光电二极管 输出元件 |
| 文件： | 总25页 (文件大小：2809K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ultralow Noise XFET Voltage References
with Current Sink and Source Capability
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
PIN CONFIGURATIONS
FEATURES
Low noise (0.1 Hz to 10.0 Hz): 3.5 μV p-p @ 2.5 V output
No external capacitor required
Low temperature coefficient
A Grade: 10 ppm/°C maximum
B Grade: 3 ppm/°C maximum
Load regulation: 15 ppm/mA
Line regulation: 20 ppm/V
TP
1
2
3
4
8
7
6
5
TP
ADR43x
TOP VIEW
(Not to Scale)
V
NC
IN
NC
V
OUT
GND
TRIM
NOTES
1. NC = NO CONNECT
2. TP = TEST PIN (DO NOT CONNECT)
Figure 1. 8-Lead MSOP (RM-8)
Wide operating range
ADR430: 4.1 V to 18 V
TP
1
2
3
4
8
7
6
5
TP
ADR431: 4.5 V to 18 V
ADR433: 5.0 V to 18 V
ADR434: 6.1 V to 18 V
ADR435: 7.0 V to 18 V
ADR43x
TOP VIEW
(Not to Scale)
V
NC
IN
NC
V
OUT
GND
TRIM
NOTES
ADR439: 6.5 V to 18 V
High output source and sink current: +30 mA and −20 mA
Wide temperature range: −40°C to +125°C
1. NC = NO CONNECT
2. TP = TEST PIN (DO NOT CONNECT)
Figure 2. 8-Lead SOIC_N (R-8)
APPLICATIONS
Precision data acquisition systems
High resolution data converters
Medical instruments
Industrial process control systems
Optical control circuits
Precision instruments
GENERAL DESCRIPTION
The ADR43x series is a family of XFET® voltage references
featuring low noise, high accuracy, and low temperature drift
performance. Using Analog Devices, Inc., patented temperature
drift curvature correction and XFET (eXtra implanted junction
FET) technology, voltage change vs. temperature nonlinearity in
the ADR43x is minimized.
Table 1. Selection Guide
Temperature
Coefficient
(ppm/°C)
Output
Voltage (V)
Model
Accuracy (mV)
ADR430A
ADR430B
ADR431A
ADR431B
ADR433A
ADR433B
ADR434A
ADR434B
ADR435A
ADR435B
ADR439A
ADR439B
2.048
2.048
2.500
2.500
3.000
3.000
4.096
4.096
5.000
5.000
4.500
4.500
3
1
3
1
4
1.5
5
1.5
6
2
10
3
10
3
10
3
10
3
10
3
10
3
The XFET references operate at lower current (800 μA) and
lower supply voltage headroom (2 V) than buried Zener
references. Buried Zener references require more than 5 V
headroom for operation. The ADR43x XFET references are
the only low noise solutions for 5 V systems.
The ADR43x family has the capability to source up to 30 mA of
output current and sink up to 20 mA. It also comes with a trim
terminal to adjust the output voltage over a 0.5% range without
compromising performance.
5.5
2
The ADR43x is available in 8-lead MSOP and 8-lead narrow
SOIC packages. All versions are specified over the extended
industrial temperature range of −40°C to +125°C.
Rev. E
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
rights of third parties that may result from its 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 and registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2003–2009 Analog Devices, Inc. All rights reserved.
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
TABLE OF CONTENTS
Noise Performance..................................................................... 15
Features .............................................................................................. 1
Applications....................................................................................... 1
Pin Configurations ........................................................................... 1
General Description......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
ADR430 Electrical Characteristics............................................. 3
ADR431 Electrical Characteristics............................................. 4
ADR433 Electrical Characteristics............................................. 5
ADR434 Electrical Characteristics............................................. 6
ADR435 Electrical Characteristics............................................. 7
ADR439 Electrical Characteristics............................................. 8
Absolute Maximum Ratings............................................................ 9
Thermal Resistance ...................................................................... 9
ESD Caution.................................................................................. 9
Typical Performance Characteristics ........................................... 10
Theory of Operation ...................................................................... 15
Basic Voltage Reference Connections...................................... 15
High Frequency Noise ............................................................... 15
Turn-On Time ............................................................................ 16
Applications Inforamtion .............................................................. 17
Output Adjustment .................................................................... 17
Reference for Converters in Optical Network Control
Circuits......................................................................................... 17
Negative Precision Reference Without Precision Resistors.. 17
High Voltage Floating Current Source.................................... 18
Kelvin Connection ..................................................................... 18
Dual Polarity References ........................................................... 18
Programmable Current Source ................................................ 19
Programmable DAC Reference Voltage .................................. 19
Precision Voltage Reference for Data Converters.................. 20
Precision Boosted Output Regulator....................................... 20
Outline Dimensions....................................................................... 21
Ordering Guide .......................................................................... 22
REVISION HISTORY
9/04—Rev. A to Rev. B
1/09—Rev. D to Rev. E
Added New Grade..............................................................Universal
Changes to Specifications.................................................................3
Replaced Figure 3, Figure 4, Figure 5........................................... 10
Updated Ordering Guide .............................................................. 21
Added High Frequency Noise Section and Equation 3;
Renumbered Sequentially.............................................................. 15
Inserted Figure 31, Figure 32, and Figure 33; Renumbered
Sequentially ..................................................................................... 16
Changes to the Ordering Guide.................................................... 22
6/04—Rev. 0 to Rev. A
Changes to Format .............................................................Universal
Changes to the Ordering Guide ................................................... 20
12/07—Rev. C to Rev. D
Changes to Initial Accuracy and Ripple Rejection Ratio
Parameters in Table 2 through Table 7 .......................................... 3
Changes to Table 9............................................................................ 9
Changes to Theory of Operation Section.................................... 15
Updated Outline Dimensions....................................................... 20
12/03—Revision 0: Initial Version
8/06—Rev. B to Rev. C
Updated Format..................................................................Universal
Changes to Table 1............................................................................ 1
Changes to Table 3............................................................................ 4
Changes to Table 4............................................................................ 5
Changes to Table 7............................................................................ 8
Changes to Figure 26...................................................................... 14
Changes to Figure 31...................................................................... 16
Updated Outline Dimensions....................................................... 20
Changes to Ordering Guide .......................................................... 21
Rev. E | Page 2 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
SPECIFICATIONS
ADR430 ELECTRICAL CHARACTERISTICS
VIN = 4.1 V to 18 V, IL = 0 mA, TA = 25°C, unless otherwise noted.
Table 2.
Parameter
OUTPUT VOLTAGE
A Grade
Symbol
Conditions
Min
Typ
Max
Unit
VO
2.045 2.048 2.051
2.047 2.048 2.049
V
V
B Grade
INITIAL ACCURACY
A Grade
VOERR
3
0.15
1
mV
%
mV
%
B Grade
0.05
TEMPERATURE COEFFICIENT
A Grade
B Grade
TCVO
−40°C < TA < +125°C
−40°C < TA < +125°C
2
1
5
10
3
ppm/°C
ppm/°C
ppm/V
ppm/mA
ppm/mA
μA
LINE REGULATION
LOAD REGULATION
∆VO/∆VIN VIN = 4.1 V to 18 V, −40°C < TA < +125°C
20
15
15
800
∆VO/∆IL
∆VO/∆IL
IIN
IL = 0 mA to 10 mA, VIN = 5.0 V, −40°C < TA < +125°C
IL = −10 mA to 0 mA, VIN = 5.0 V, −40°C < TA < +125°C
QUIESCENT CURRENT
No load, −40°C < TA < +125°C
0.1 Hz to 10.0 Hz
1 kHz
560
3.5
60
VOLTAGE NOISE
eN p-p
eN
μV p-p
nV/√Hz
μs
VOLTAGE NOISE DENSITY
TURN-ON SETTLING TIME
LONG-TERM STABILITY1
OUTPUT VOLTAGE HYSTERESIS
RIPPLE REJECTION RATIO
SHORT CIRCUIT TO GND
tR
CL = 0 μF
10
∆VO
1000 hours
40
ppm
VO_HYS
RRR
ISC
20
ppm
fIN = 1 kHz
–70
40
dB
mA
SUPPLY VOLTAGE
OPERATING RANGE
VIN
4.1
2
18
V
V
SUPPLY VOLTAGE HEADROOM
VIN − VO
1 The long-term stability specification is noncumulative. The drift in subsequent 1000 hour periods is significantly lower than in the first 1000 hour period.
Rev. E | Page 3 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
ADR431 ELECTRICAL CHARACTERISTICS
VIN = 4.5 V to 18 V, IL = 0 mA, TA = 25°C, unless otherwise noted.
Table 3.
Parameter
OUTPUT VOLTAGE
A Grade
Symbol
Conditions
Min
Typ
Max
Unit
VO
2.497 2.500 2.503
2.499 2.500 2.501
V
V
B Grade
INITIAL ACCURACY
A Grade
VOERR
3
0.12
1
mV
%
mV
%
B Grade
0.04
TEMPERATURE COEFFICIENT
A Grade
B Grade
TCVO
−40°C < TA < +125°C
−40°C < TA < +125°C
2
1
5
10
3
ppm/°C
ppm/°C
ppm/V
ppm/mA
ppm/mA
μA
LINE REGULATION
LOAD REGULATION
∆VO/∆VIN VIN = 4.5 V to 18 V, −40°C < TA < +125°C
20
15
15
800
∆VO/∆IL
∆VO/∆IL
IIN
IL = 0 mA to 10 mA, VIN = 5.0 V, −40°C < TA < +125°C
IL = −10 mA to 0 mA, VIN = 5.0 V, −40°C < TA < +125°C
QUIESCENT CURRENT
No load, −40°C < TA < +125°C
0.1 Hz to 10.0 Hz
1 kHz
580
3.5
80
VOLTAGE NOISE
eN p-p
eN
μV p-p
nV/√Hz
μs
VOLTAGE NOISE DENSITY
TURN-ON SETTLING TIME
LONG-TERM STABILITY1
OUTPUT VOLTAGE HYSTERESIS
RIPPLE REJECTION RATIO
SHORT CIRCUIT TO GND
tR
CL = 0 μF
10
∆VO
1000 hours
40
ppm
VO_HYS
RRR
ISC
20
ppm
fIN = 1 kHz
−70
40
dB
mA
SUPPLY VOLTAGE
OPERATING RANGE
VIN
4.5
2
18
V
V
SUPPLY VOLTAGE HEADROOM
VIN − VO
1 The long-term stability specification is noncumulative. The drift in subsequent 1000 hour periods is significantly lower than in the first 1000 hour period.
Rev. E | Page 4 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
ADR433 ELECTRICAL CHARACTERISTICS
VIN = 5.0 V to 18 V, IL = 0 mA, TA = 25°C, unless otherwise noted.
Table 4.
Parameter
OUTPUT VOLTAGE
A Grade
Symbol
Conditions
Min
Typ
Max
Unit
VO
2.996
3.000 3.004
V
V
B Grade
2.9985 3.000 3.0015
INITIAL ACCURACY
A Grade
VOERR
4
mV
%
mV
%
0.13
1.5
0.05
B Grade
TEMPERATURE COEFFICIENT
A Grade
B Grade
TCVO
−40°C < TA < +125°C
−40°C < TA < +125°C
2
1
5
10
3
ppm/°C
ppm/°C
ppm/V
ppm/mA
ppm/mA
μA
LINE REGULATION
LOAD REGULATION
∆VO/∆VIN VIN = 5 V to 18 V, −40°C < TA < +125°C
20
15
15
800
∆VO/∆IL
∆VO/∆IL
IIN
IL = 0 mA to 10 mA, VIN = 6 V, −40°C < TA < +125°C
IL = −10 mA to 0 mA, VIN = 6 V, −40°C < TA < +125°C
QUIESCENT CURRENT
No load, −40°C < TA < +125°C
0.1 Hz to 10.0 Hz
1 kHz
590
3.75
90
VOLTAGE NOISE
eN p-p
eN
μV p-p
nV/√Hz
μs
VOLTAGE NOISE DENSITY
TURN-ON SETTLING TIME
LONG-TERM STABILITY1
OUTPUT VOLTAGE HYSTERESIS
RIPPLE REJECTION RATIO
SHORT CIRCUIT TO GND
tR
CL = 0 μF
10
∆VO
1000 hours
40
ppm
VO_HYS
RRR
ISC
20
ppm
fIN = 1 kHz
−70
40
dB
mA
SUPPLY VOLTAGE
OPERATING RANGE
VIN
5.0
2
18
V
V
SUPPLY VOLTAGE HEADROOM
VIN − VO
1 The long-term stability specification is noncumulative. The drift in subsequent 1000 hour periods is significantly lower than in the first 1000 hour period.
Rev. E | Page 5 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
ADR434 ELECTRICAL CHARACTERISTICS
VIN = 6.1 V to 18 V, IL = 0 mA, TA = 25°C, unless otherwise noted.
Table 5.
Parameter
OUTPUT VOLTAGE
A Grade
Symbol
Conditions
Min
Typ
Max
Unit
VO
4.091
4.096 4.101
V
V
B Grade
4.0945 4.096 4.0975
INITIAL ACCURACY
A Grade
VOERR
5
mV
%
mV
%
0.12
1.5
0.04
B Grade
TEMPERATURE COEFFICIENT
A Grade
B Grade
TCVO
−40°C < TA < +125°C
−40°C < TA < +125°C
2
1
5
10
3
ppm/°C
ppm/°C
ppm/V
ppm/mA
ppm/mA
μA
LINE REGULATION
LOAD REGULATION
∆VO/∆VIN VIN = 6.1 V to 18 V, −40°C < TA < +125°C
20
15
15
800
∆VO/∆IL
∆VO/∆IL
IIN
IL = 0 mA to 10 mA, VIN = 7 V, −40°C < TA < +125°C
IL = −10 mA to 0 mA, VIN = 7 V, −40°C < TA < +125°C
QUIESCENT CURRENT
No load, −40°C < TA < +125°C
0.1 Hz to 10.0 Hz
1 kHz
595
6.25
100
10
VOLTAGE NOISE
eN p-p
eN
μV p-p
nV/√Hz
μs
VOLTAGE NOISE DENSITY
TURN-ON SETTLING TIME
LONG-TERM STABILITY1
OUTPUT VOLTAGE HYSTERESIS
RIPPLE REJECTION RATIO
SHORT CIRCUIT TO GND
tR
CL = 0 μF
∆VO
1000 hours
40
ppm
VO_HYS
RRR
ISC
20
ppm
fIN = 1 kHz
−70
40
dB
mA
SUPPLY VOLTAGE
OPERATING RANGE
VIN
6.1
2
18
V
V
SUPPLY VOLTAGE HEADROOM
VIN − VO
1 The long-term stability specification is noncumulative. The drift in subsequent 1000 hour periods is significantly lower than in the first 1000 hour period.
Rev. E | Page 6 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
ADR435 ELECTRICAL CHARACTERISTICS
VIN = 7.0 V to 18 V, IL = 0 mA, TA = 25°C, unless otherwise noted.
Table 6.
Parameter
OUTPUT VOLTAGE
A Grade
Symbol
Conditions
Min
Typ
Max
Unit
VO
4.994 5.000 5.006
4.998 5.000 5.002
V
V
B Grade
INITIAL ACCURACY
A Grade
VOERR
6
0.12
2
mV
%
mV
%
B Grade
0.04
TEMPERATURE COEFFICIENT
A Grade
B Grade
TCVO
−40°C < TA < +125°C
−40°C < TA < +125°C
2
1
5
10
3
ppm/°C
ppm/°C
ppm/V
ppm/mA
ppm/mA
μA
LINE REGULATION
LOAD REGULATION
∆VO/∆VIN VIN = 7 V to 18 V, −40°C < TA < +125°C
20
15
15
800
∆VO/∆IL
∆VO/∆IL
IIN
IL = 0 mA to 10 mA, VIN = 8 V, −40°C < TA < +125°C
IL = −10 mA to 0 mA, VIN = 8 V, −40°C < TA < +125°C
QUIESCENT CURRENT
No load, −40°C < TA < +125°C
0.1 Hz to 10 Hz
1 kHz
620
8
VOLTAGE NOISE
eN p-p
eN
μV p-p
nV/√Hz
μs
VOLTAGE NOISE DENSITY
TURN-ON SETTLING TIME
LONG-TERM STABILITY1
OUTPUT VOLTAGE HYSTERESIS
RIPPLE REJECTION RATIO
SHORT CIRCUIT TO GND
115
10
tR
CL = 0 μF
∆VO
1000 hours
40
ppm
ppm
dB
VO_HYS
RRR
ISC
20
fIN = 1 kHz
−70
40
mA
SUPPLY VOLTAGE OPERATING RANGE VIN
SUPPLY VOLTAGE HEADROOM VIN − VO
7.0
2
18
V
V
1 The long-term stability specification is noncumulative. The drift in subsequent 1000 hour periods is significantly lower than in the first 1000 hour period.
Rev. E | Page 7 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
ADR439 ELECTRICAL CHARACTERISTICS
VIN = 6.5 V to 18 V, IL = 0 mV, TA = 25°C, unless otherwise noted.
Table 7.
Parameter
OUTPUT VOLTAGE
A Grade
Symbol Conditions
Min
Typ
Max
Unit
VO
4.4946 4.500 4.5054
4.498
V
V
B Grade
4.500 4.502
INITIAL ACCURACY
A Grade
VOERR
5.5
0.12
2
mV
%
mV
%
B Grade
0.04
TEMPERATURE COEFFICIENT
A Grade
B Grade
TCVO
−40°C < TA < +125°C
−40°C < TA < +125°C
2
1
5
10
3
ppm/°C
ppm/°C
ppm/V
ppm/mA
ppm/mA
μA
LINE REGULATION
LOAD REGULATION
∆VO/∆VIN VIN = 6.5 V to 18 V, −40°C < TA < +125°C
20
15
15
800
∆VO/∆IL
∆VO/∆IL
IIN
IL = 0 mA to 10 mA, VIN = 6.5 V, −40°C < TA < +125°C
IL = −10 mA to 0 mA, VIN = 6.5 V, −40°C < TA < +125°C
QUIESCENT CURRENT
No load, −40°C < TA < +125°C
0.1 Hz to 10.0 Hz
1 kHz
600
7.5
110
10
VOLTAGE NOISE
eN p-p
eN
μV p-p
nV/√Hz
μs
VOLTAGE NOISE DENSITY
TURN-ON SETTLING TIME
LONG-TERM STABILITY1
OUTPUT VOLTAGE HYSTERESIS
RIPPLE REJECTION RATIO
SHORT CIRCUIT TO GND
tR
CL = 0 μF
∆VO
1000 hours
40
ppm
ppm
dB
VO_HYS
RRR
ISC
20
fIN = 1 kHz
−70
40
mA
SUPPLY VOLTAGE OPERATING RANGE VIN
SUPPLY VOLTAGE HEADROOM VIN − VO
6.5
2
18
V
V
1 The long-term stability specification is noncumulative. The drift in subsequent 1000 hour periods is significantly lower than in the first 1000 hour period.
Rev. E | Page 8 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
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 8.
Parameter
Rating
Supply Voltage
20 V
Indefinite
−65°C to +125°C
−40°C to +125°C
−65°C to +150°C
300°C
Table 9. Thermal Resistance
Package Type
Output Short-Circuit Duration to GND
Storage Temperature Range
Operating Temperature Range
Junction Temperature Range
Lead Temperature, Soldering (60 sec)
θJA
θJC
43
44
Unit
°C/W
°C/W
8-Lead SOIC_N (R)
8-Lead MSOP (RM)
130
142
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. E | Page 9 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
TYPICAL PERFORMANCE CHARACTERISTICS
Default conditions: 5 V, CL = 5 pF, G = 2, RG = RF = 1 kΩ, RL = 2 kΩ, VO = 2 V p-p, f = 1 MHz, TA = 25°C, unless otherwise noted.
0.8
2.5009
0.7
0.6
2.5007
2.5005
2.5003
2.5001
2.4999
2.4997
2.4995
+125°C
+25°C
–40°C
0.5
0.4
0.3
–40 –25 –10
5
20
35
50
65
80
95 110 125
4
6
8
10
12
14
16
TEMPERATURE (°C)
INPUT VOLTAGE (V)
Figure 3. ADR431 Output Voltage vs. Temperature
Figure 6. ADR435 Supply Current vs. Input Voltage
700
650
600
550
500
450
400
4.0980
4.0975
4.0970
4.0965
4.0960
4.0955
4.0950
–40 –25 –10
5
20
35
50
65
80
95 110 125
–40 –25 –10
5
20
35
50
65
80
95 110 125
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 4. ADR434 Output Voltage vs. Temperature
Figure 7. ADR435 Supply Current vs. Temperature
0.60
0.58
0.56
0.54
0.52
0.50
0.48
0.46
0.44
0.42
0.40
5.0025
5.0020
5.0015
5.0010
5.0005
5.0000
4.9995
4.9990
+125°C
+25°C
–40°C
–40 –25 –10
5
20
35
50
65
80
95 110 125
6
8
10
12
14
16
18
TEMPERATURE (°C)
INPUT VOLTAGE (V)
Figure 5. ADR435 Output Voltage vs. Temperature
Figure 8. ADR431 Supply Current vs. Input Voltage
Rev. E | Page 10 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
2.5
610
580
550
520
490
460
430
400
2.0
–40°C
1.5
+25°C
1.0
+125°C
0.5
0
–10
–5
0
5
10
–40 –25 –10
5
20
35
50
65
80
95 110 125
TEMPERATURE (°C)
LOAD CURRENT (mA)
Figure 9. ADR431 Supply Current vs. Temperature
Figure 12. ADR431 Minimum Input/Output
Differential Voltage vs. Load Current
15
12
9
1.9
I
= 0mA to 10mA
L
NO LOAD
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
6
3
0
–40 –25 –10
5
20
35
50
65
80
95 110 125
–40 –25 –10
5
20
35
50
65
80
95 110 125
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 10. ADR431 Load Regulation vs. Temperature
Figure 13. ADR431 Minimum Headroom vs. Temperature
15
12
9
2.5
I
= 0mA to 10mA
L
2.0
1.5
1.0
0.5
0
–40°C
+25°C
6
+125°C
3
0
–40 –25 –10
5
20
35
50
65
80
95 110 125
–10
–5
0
5
10
TEMPERATURE (°C)
LOAD CURRENT (mA)
Figure 11. ADR435 Load Regulation vs. Temperature
Figure 14. ADR435 Minimum Input/Output
Differential Voltage vs. Load Current
Rev. E | Page 11 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
1.9
NO LOAD
1.7
1.5
1.3
1.1
0.9
C
= 0.01µF
L
NO INPUT CAPACITOR
V
= 1V/DIV
O
V
= 2V/DIV
IN
TIME = 4µs/DIV
–40 –25 –10
5
20
35
50
65
80
95 110 125
TEMPERATURE (°C)
Figure 15. ADR435 Minimum Headroom vs. Temperature
Figure 18. ADR431 Turn-On Response, 0.01 μF Load Capacitor
20
16
12
8
V
= 7V TO 18V
IN
C
= 0.01µF
IN
NO LOAD
V
= 1V/DIV
O
4
0
V
= 2V/DIV
IN
TIME = 4µs/DIV
–4
–40 –25 –10
5
20
35
50
65
80
95 110 125
TEMPERATURE (°C)
Figure 19. ADR431 Turn-Off Response
Figure 16. ADR435 Line Regulation vs. Temperature
LINE
C
= 0.01µF
BYPASS CAPACITOR = 0µF
IN
INTERRUPTION
NO LOAD
V
= 1V/DIV
O
V
= 500mV/DIV
IN
V
= 50mV/DIV
O
V
= 2V/DIV
IN
TIME = 100µs/DIV
TIME = 4µs/DIV
Figure 20. ADR431 Line Transient Response
Figure 17. ADR431 Turn-On Response
Rev. E | Page 12 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
LINE
INTERRUPTION
BYPASS CAPACITOR = 0.1µF
V
= 500mV/DIV
IN
V
= 50mV/DIV
O
2µV/DIV
TIME = 100µs/DIV
TIME = 1s/DIV
Figure 21. ADR431 Line Transient Response, 0.1 μF Bypass Capacitor
Figure 24. ADR435 0.1 Hz to 10.0 Hz Voltage Noise
1µV/DIV
50µV/DIV
TIME = 1s/DIV
TIME = 1s/DIV
Figure 22. ADR431 0.1 Hz to 10.0 Hz Voltage Noise
Figure 25. ADR435 10 Hz to 10 kHz Voltage Noise
14
12
10
8
6
4
50µV/DIV
2
0
TIME = 1s/DIV
–110 –90 –70 –50 –30 –10 10
30
50
70
90 110
DEVIATION (PPM)
Figure 23. ADR431 10 Hz to 10 kHz Voltage Noise
Figure 26. ADR431 Typical Hysteresis
Rev. E | Page 13 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
50
45
10
–10
–30
40
35
30
25
20
15
10
5
–50
ADR435
–70
–90
ADR433
–110
–130
–150
ADR430
0
100
1k
10k
FREQUENCY (Hz)
100k
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
Figure 27. Output Impedance vs. Frequency
Figure 28. Ripple Rejection
Rev. E | Page 14 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
THEORY OF OPERATION
The ADR43x family of references is guaranteed to deliver load
currents to 10 mA with an input voltage that ranges from 4.1 V
to 18 V. When these devices are used in applications at higher
currents, use the following equation to account for the
temperature effects due to the power dissipation increases:
The ADR43x series of references uses a reference generation
technique known as XFET (eXtra implanted junction FET).
This technique yields a reference with low supply current, good
thermal hysteresis, and exceptionally low noise. The core of the
XFET reference consists of two junction field-effect transistors
(JFETs), one of which has an extra channel implant to raise its
pinch-off voltage. By running the two JFETs at the same drain
current, the difference in pinch-off voltage can be amplified and
used to form a highly stable voltage reference.
TJ = PD × θJA + TA
(2)
where:
TJ and TA are the junction and ambient temperatures, respectively.
PD is the device power dissipation.
The intrinsic reference voltage is around 0.5 V with a negative
temperature coefficient of about −120 ppm/°C. This slope is
essentially constant to the dielectric constant of silicon and can
be compensated closely by adding a correction term generated
in the same fashion as the proportional-to-temperature (PTAT)
term used to compensate band gap references. The primary
advantage of an XFET reference is its correction term, which is
~30 times lower and requires less correction than that of a band
gap reference. Because most of the noise of a band gap reference
comes from the temperature compensation circuitry, the XFET
results in much lower noise.
θJA is the device package thermal resistance.
BASIC VOLTAGE REFERENCE CONNECTIONS
Voltage references, in general, require a bypass capacitor
connected from VOUT to GND. The circuit in Figure 30
illustrates the basic configuration for the ADR43x family
of references. Other than a 0.1 μF capacitor at the output to
help improve noise suppression, a large output capacitor at
the output is not required for circuit stability.
TP
TP
1
2
3
4
8
7
6
5
V
NC
ADR43x
TOP VIEW
(Not to Scale)
IN
+
V
OUT
Figure 29 shows the basic topology of the ADR43x series. The
temperature correction term is provided by a current source
with a value designed to be proportional to absolute temperature.
The general equation is
10µF
NC
0.1µF
GND
0.1µF
TRIM
NOTES:
1. NC = NO CONNECT
2. TP = TEST PIN (DO NOT CONNECT)
V
OUT = G (ΔVP – R1 × IPTAT
)
(1)
Figure 30. Basic Voltage Reference Configuration
where:
NOISE PERFORMANCE
G is the gain of the reciprocal of the divider ratio.
ΔVP is the difference in pinch-off voltage between the two JFETs.
PTAT is the positive temperature coefficient correction current.
The noise generated by the ADR43x family of references is
typically less than 3.75 μV p-p over the 0.1 Hz to 10.0 Hz band
for ADR430, ADR431, and ADR433. Figure 22 shows the 0.1 Hz
to 10.0 Hz noise of the ADR431, which is only 3.5 μV p-p. The
noise measurement is made with a band-pass filter made of a
2-pole high-pass filter with a corner frequency at 0.1 Hz and a
2-pole low-pass filter with a corner frequency at 10.0 Hz.
I
ADR43x devices are created by on-chip adjustment of R2 and R3 to
achieve 2.048 V or 2.500 V, respectively, at the reference output.
V
IN
I
1
I
1
ADR43x
I
PTAT
HIGH FREQUENCY NOISE
V
OUT
R2
The total noise generated by the ADR43x family of references is
composed of the reference noise and the op amp noise. Figure 31
shows the wideband noise from 10 Hz to 25 kHz. An internal node
of the op amp is brought out on Pin 7, and by overcompensating
the op amp, the overall noise can be reduced.
*
ΔV
P
R3
R1
*EXTRA CHANNEL IMPLANT
= G(ΔV – R1 × I
V
)
This is understood by considering that in a closed-loop
OUT
P
PTAT
GND
configuration, the effective output impedance of an op amp is
Figure 29. Simplified Schematic Device
Power Dissipation Considerations
rO
RO
=
(3)
1+ AVOβ
where:
RO is the apparent output impedance.
rO is the output resistance of the op amp.
AVO is the open-loop gain at the frequency of interest.
β is the feedback factor.
Rev. E | Page 15 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
Equation 3 shows that the apparent output impedance is reduced
by approximately the excess loop gain; therefore, as the frequency
increases, the excess loop gain decreases, and the apparent output
impedance increases. A passive element whose impedance
increases as its frequency increases is an inductor. When a
capacitor is added to the output of an op amp or a reference, it
forms a tuned circuit that resonates at a certain frequency and
results in gain peaking. This can be observed by using a model
of a semiperfect op amp with a single-pole response and some
pure resistance in series with the output. Changing capacitive
loads results in peaking at different frequencies. For most normal
op amp applications with low capacitive loading (<100 pF), this
effect is usually not observed.
The op amp within the ADR43x family uses the classic RC
compensation technique. Monolithic capacitors in an IC are
limited to tens of picofarads. With very large external capacitive
loads, such as 50 μF, it is necessary to overcompensate the op amp.
The internal compensation node is brought out on Pin 7, and
an external series RC network can be added between Pin 7 and
the output, Pin 6, as shown in Figure 32.
TP
TP
1
2
3
4
8
7
6
5
82kΩ
COMP
V
IN
10µF
ADR43x
TOP VIEW
(Not to Scale)
10nF
0.1µF
+
V
OUT
NC
0.1µF
GND
TRIM
NOTES
1. NC = NO CONNECT
2. TP = TEST PIN (DO NOT CONNECT)
However, references are used increasingly to drive the reference
input of an ADC that may present a dynamic, switching capacitive
load. Large capacitors, in the microfarad range, are used to reduce
the change in reference voltage to less than one-half LSB. Figure 31
shows the ADR431 noise spectrum with various capacitive values
to 50 μF. With no capacitive load, the noise spectrum is relatively
flat at approximately 60 nV/√Hz to 70 nV/√Hz. With various
values of capacitive loading, the predicted noise peaking
becomes evident.
Figure 32. Compensated Reference
The 82 kΩ resistor and 10 nF capacitor can eliminate the noise
peaking (see Figure 33).
100
C
= 10µF
L
RC 82kΩ AND 10nF
C
= 1µF
L
1000
RC 82kΩ AND 10nF
ADR431
NO COMPENSATION
C
= 50µF
L
RC 82kΩ AND 10nF
C
= 1µF
L
C
= 10µF
L
C
= 50µF
L
100
10
10
100
1k
10k
C
= 0µF
L
FREQUENCY (Hz)
Figure 33. Noise with Compensation Network
TURN-ON TIME
10
10
100
1k
FREQUENCY (Hz)
10k
100k
Upon application of power (cold start), the time required for the
output voltage to reach its final value within a specified error band
is defined as the turn-on settling time. Two components normally
associated with this are the time for the active circuits to settle
and the time for the thermal gradients on the chip to stabilize.
Figure 17 and Figure 18 show the turn-on settling time for the
ADR431.
Figure 31. Noise vs. Capacitive Loading
Rev. E | Page 16 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
APPLICATIONS INFORMATION
OUTPUT ADJUSTMENT
The ADR43x trim terminal can be used to adjust the output
SOURCE FIBER
GIMBAL + SENSOR
DESTINATION
FIBER
LASER BEAM
voltage over a 0.5% range. This feature allows the system designer
to trim system errors out by setting the reference to a voltage
other than the nominal. This is also helpful if the part is used in
a system at temperature to trim out any error. Adjustment of the
output has negligible effect on the temperature performance of the
device. To avoid degrading temperature coefficients, both the
trimming potentiometer and the two resistors need to be low
temperature coefficient types, preferably <100 ppm/°C.
INPUT
ACTIVATOR
LEFT
ACTIVATOR
RIGHT
MEMS MIRROR
PREAMP
AMPL
DAC
AMPL
DAC
ADR431
ADR431
ADR431
CONTROL
ELECTRONICS
ADC
V
IN
V
OUTPUT
= ±0.5%
DSP
GND
V
OUT
O
Figure 35. All Optical Router Network
ADR43x
R1
470kΩ
R
10kΩ
P
NEGATIVE PRECISION REFERENCE WITHOUT
PRECISION RESISTORS
TRIM
GND
10kΩ (ADR430)
15kΩ (ADR431)
R2
In many current output CMOS DAC applications, where the
output signal voltage must be of the same polarity as the reference
voltage, it is required to reconfigure a current-switching DAC
into a voltage-switching DAC by using a 1.25 V reference, an
operational amplifier, and a pair of resistors. Using a current-
switching DAC directly requires an additional operational amplifier
at the output to reinvert the signal. A negative voltage reference
is desirable because an additional operational amplifier is not
required for either reinversion (current-switching mode) or
amplification (voltage-switching mode) of the DAC output voltage.
In general, any positive voltage reference can be converted to a
negative voltage reference by using an operational amplifier and
a pair of matched resistors in an inverting configuration. The
disadvantage of this approach is that the largest single source of
error in the circuit is the relative matching of the resistors used.
Figure 34. Output Trim Adjustment
REFERENCE FOR CONVERTERS IN OPTICAL
NETWORK CONTROL CIRCUITS
In Figure 35, the high capacity, all optical router network
employs arrays of micromirrors to direct and route optical
signals from fiber to fiber without first converting them to
electrical form, which reduces the communication speed. The
tiny micromechanical mirrors are positioned so that each is
illuminated by a single wavelength that carries unique information
and can be passed to any desired input and output fiber. The
mirrors are tilted by the dual-axis actuators, which are controlled
by precision ADCs and DACs within the system. Due to the
microscopic movement of the mirrors, not only is the precision
of the converters important but the noise associated with these
controlling converters is also extremely critical. Total noise
within the system can be multiplied by the number of converters
employed. Therefore, to maintain the stability of the control
loop for this application, the ADR43x, with its exceptionally low
noise, is necessary.
Rev. E | Page 17 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
A negative reference can easily be generated by adding a
precision operational amplifier, such as the OP777 or the
OP193, and configuring it as shown in Figure 36. VOUT is at
virtual ground; therefore, the negative reference can be taken
directly from the output of the amplifier. The operational
amplifier must be dual supply and have low offset and rail-
to-rail capability if the negative supply voltage is close to the
reference output.
Because the amplifier senses the load voltage, the operational
amplifier loop control forces the output to compensate for the
wiring error and to produce the correct voltage at the load.
V
IN
R
LW
V
OUT
SENSE
2
V
IN
ADR43x
R
LW
A1
OP191
+
V
OUT
FORCE
V
6
OUT
R
L
+V
DD
GND
4
2
V
IN
Figure 38. Advantage of Kelvin Connection
V
6
OUT
DUAL POLARITY REFERENCES
ADR43x
Dual polarity references can easily be made with an operational
amplifier and a pair of resistors. To avoid defeating the accuracy
obtained by the ADR43x, it is imperative to match the resistance
tolerance as well as the temperature coefficient of all the components.
GND
4
A1
–V
REF
V
IN
2
–V
1µF
0.1µF
DD
V
V
OUT
6
+5V
IN
Figure 36. Negative Reference
R1
R2
10kΩ
ADR435
10kW
HIGH VOLTAGE FLOATING CURRENT SOURCE
U1
+10V
V+
5
GND
TRIM
The circuit in Figure 37 can be used to generate a floating
current source with minimal self heating. This particular
configuration can operate on high supply voltages determined
by the breakdown voltage of the N-channel JFET.
4
OP1177
U2
–5V
V–
R3
5kΩ
+V
–10V
S
SST111
VISHAY
Figure 39. +5 V and −5 V References Using ADR435
+2.5V
2
+10V
V
IN
2
V
OUT
6
V
V
IN
6
5
OUT
2N3904
OP90
ADR43x
GND
R1
5.6kΩ
ADR435
U1
4
R
L
TRIM
GND
4
2.1kΩ
R2
5.6kΩ
V+
–V
S
OP1177
U2
Figure 37. High Voltage Floating Current Source
V–
–2.5V
KELVIN CONNECTION
–10V
In many portable instrumentation applications, where printed
circuit board (PCB) cost and area go hand in hand, circuit
interconnects are very often of dimensionally minimum width.
These narrow lines can cause large voltage drops if the voltage
reference is required to provide load currents to various functions.
In fact, circuit interconnects can exhibit a typical line resistance
of 0.45 mΩ/square (for example, 1 oz. Cu). Force and sense
connections, also referred to as Kelvin connections, offer a
convenient method of eliminating the effects of voltage drops
in circuit wires. Load currents flowing through wiring resistance
produce an error (VERROR = R × IL) at the load. However, the
Kelvin connection of Figure 38 overcomes the problem by
including the wiring resistance within the forcing loop of the
operational amplifier.
Figure 40. +2.5 V and −2.5 V References Using ADR435
Rev. E | Page 18 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
PROGRAMMABLE CURRENT SOURCE
PROGRAMMABLE DAC REFERENCE VOLTAGE
Together with a digital potentiometer and a Howland current
pump, the ADR435 forms the reference source for a programmable
current as
By employing a multichannel DAC, such as the AD7398,
quad, 12-bit voltage output DAC, one of its internal DACs
and an ADR43x voltage reference can be used as a common
programmable VREFX for the rest of the DACs. The circuit
configuration is shown in Figure 42.
R2 + R2B
⎛
⎜
⎞
⎟
A
R1
R2B
⎜
⎜
⎟
⎟
IL =
×VW
(4)
(5)
R2
⎜
⎝
⎟
⎠
± 0.1%
V
REFA
R1 ± 0.1%
V
OUTA
V
and
DAC A
REF
V
IN
ADR43x
D
VW
=
×VREF
2N
V
REFB
V
OUTB
OUTC
V
= V
(D )
REFX B
OB
where:
DAC B
D is the decimal equivalent of the input code.
N is the number of bits.
V
REFC
V
In addition, R1' and R2' must be equal to R1 and (R2A + R2B),
respectively. In theory, R2B can be made as small as needed to
achieve the necessary current within the A2 output current
driving capability. In this example, the OP2177 can deliver a
maximum output current of 10 mA. Because the current pump
employs both positive and negative feedback, C1 and C2
capacitors are needed to ensure that the negative feedback
prevails and, therefore, avoids oscillation. This circuit also
allows bidirectional current flow if the VA and VB inputs of
the digital potentiometer are supplied with the dual polarity
references, as shown in Figure 41.
V
V
= V
(D
(D
)
OC
REFX
REFX
C
DAC C
V
REFD
V
OUTD
= V
)
D
OD
DAC D
AD7398
Figure 42. Programmable DAC Reference
The relationship of VREFX to VREF depends on the digital code
and the ratio of R1 and R2, given by
R2
R1
⎛
⎝
⎞
⎟
⎠
C1
10pF
VREF × 1+
⎜
VREFX
=
(6)
D
R2
R1
⎛
⎜
⎝
⎞
⎠
R1'
R2'
1kΩ
V
DD
1+
×
⎟
2N
50kΩ
2
V
DD
where:
V
IN
TRIM
5
6
D is the decimal equivalent of the input code.
N is the number of bits.
V+
ADR435
U1
U2
C2
10pF
OP2177
A2
V–
AD5232
V
DD
V
OUT
V
V
REF is the applied external reference.
REFX is the reference voltage for DAC A to DAC D.
GND
4
A
R2
10Ω
B
V+
R1
50kΩ
V
SS
W
B
OP2177
A1
V–
Table 10. VREFX vs. R1 and R2
R1, R2
R2
1kΩ
A
Digital Code
VREF
+
VL
–
I
L
V
R1 = R2
R1 = R2
R1 = R2
R1 = 3R2
R1 = 3R2
R1 = 3R2
0000 0000 0000
1000 0000 0000
1111 1111 1111
0000 0000 0000
1000 0000 0000
1111 1111 1111
2 VREF
1.3 VREF
VREF
4 VREF
1.6 VREF
VREF
SS
I
L
Figure 41. Programmable Current Source
Rev. E | Page 19 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
PRECISION VOLTAGE REFERENCE FOR DATA
CONVERTERS
PRECISION BOOSTED OUTPUT REGULATOR
A precision voltage output with boosted current capability can
be realized with the circuit shown in Figure 44. In this circuit,
U2 forces VO to be equal to VREF by regulating the turn-on of
N1. Therefore, the load current is furnished by VIN. In this
configuration, a 50 mA load is achievable at a VIN of 5 V. Moderate
heat is generated on the MOSFET, and higher current can be
achieved with a replacement of the larger device. In addition,
for a heavy capacitive load with step input, a buffer can be
added at the output to enhance the transient response.
N1
The ADR43x family has a number of features that make it ideal
for use with ADCs and DACs. The exceptional low noise, tight
temperature coefficient, and high accuracy characteristics make
the ADR43x ideal for low noise applications, such as cellular
base station applications.
Another example of an ADC for which the ADR431 is well
suited is the AD7701. Figure 43 shows the ADR431 used as
the precision reference for this converter. The AD7701 is a 16-bit
ADC with on-chip digital filtering intended for the measurement
of wide dynamic range and low frequency signals, such as those
representing chemical, physical, or biological processes. It contains
a charge-balancing Σ-ꢀ ADC, a calibration microcontroller
with on-chip static RAM, a clock oscillator, and a serial
communications port.
V
IN
V
O
R
25Ω
L
2
5V
V
IN
U1
2N7002
ADR431
V
OUT
6
5
+
–
V+
U2
TRIM
AD8601
+5V
ANALOG
V–
GND
4
SUPPLY
0.1µF
10µF
AD7701
AV
V
DV
DD
DD
2
0.1µF
SLEEP
MODE
Figure 44. Precision Boosted Output Regulator
V
IN
V
OUT
6
REF
DATA READY
DRDY
CS
0.1µF
ADR431
GND
4
READ (TRANSMIT)
SERIAL CLOCK
SERIAL CLOCK
SCLK
SDATA
CLKIN
RANGES
SELECT
BP/UP
CAL
CLKOUT
SC1
CALIBRATE
ANALOG
INPUT
A
IN
SC2
ANALOG
GROUND
AGND
DGND
0.1µF
0.1µF
DV
SS
AV
SS
–5V
ANALOG
SUPPLY
10µF
0.1µF
Figure 43. Voltage Reference for the AD7701 16-Bit ADC
Rev. E | Page 20 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
OUTLINE DIMENSIONS
3.20
3.00
2.80
8
1
5
4
5.15
4.90
4.65
3.20
3.00
2.80
PIN 1
0.65 BSC
0.95
0.85
0.75
1.10 MAX
0.80
0.60
0.40
8°
0°
0.15
0.00
0.38
0.22
0.23
0.08
SEATING
PLANE
COPLANARITY
0.10
COMPLIANT TO JEDEC STANDARDS MO-187-AA
Figure 45. 8-Lead Mini Small Outline Package [MSOP]
(RM-8)
Dimensions shown in millimeters
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 46. 8-Lead Standard Small Outline Package [SOIC_N]
Narrow Body
(R-8)
Dimensions shown in millimeters and (inches)
Rev. E | Page 21 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
ORDERING GUIDE
Temperature
Initial
Coefficient
Accuracy,
Output
Package
(ppm/°C)
Temperature
Range
Package
Description
Package
Option
Ordering
Quantity
Model
Voltage (V) (mV) (%)
Branding
ADR430AR
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
3
0.15 10
–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
–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
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead MSOP
8-Lead MSOP
8-Lead MSOP
8-Lead MSOP
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 MSOP
8-Lead MSOP
8-Lead MSOP
8-Lead MSOP
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 MSOP
8-Lead MSOP
8-Lead MSOP
8-Lead MSOP
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 MSOP
8-Lead MSOP
8-Lead MSOP
8-Lead MSOP
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
R-8
98
ADR430AR-REEL7
ADR430ARZ1
ADR430ARZ-REEL71
3
0.15 10
0.15 10
0.15 10
0.15 10
0.15 10
0.15 10
0.15 10
R-8
1,000
98
3
R-8
3
R-8
1,000
50
ADR430ARM
3
RM-8
RM-8
RM-8
RM-8
R-8
RHA
RHA
R10
R10
ADR430ARM-REEL7
ADR430ARMZ1
ADR430ARMZ-REEL71
ADR430BR
3
1,000
50
3
3
1,000
98
1
0.05
0.05
0.05
0.05
3
3
3
3
ADR430BR-REEL7
ADR430BRZ1
ADR430BRZ-REEL71
1
R-8
1,000
98
1
R-8
1
R-8
1,000
98
ADR431AR
3
0.12 10
0.12 10
0.12 10
0.12 10
0.12 10
0.12 10
0.12 10
0.12 10
R-8
ADR431AR-REEL7
ADR431ARZ1
ADR431ARZ-REEL71
3
R-8
1,000
98
3
R-8
3
R-8
1,000
50
ADR431ARM
3
RM-8
RM-8
RM-8
RM-8
R-8
RJA
RJA
R12
R12
ADR431ARM-REEL7
ADR431ARMZ1
ADR431ARMZ-REEL71
ADR431BR
3
1,000
50
3
3
1,000
98
1
0.04
0.04
0.04
0.04
3
3
3
3
ADR431BR-REEL7
ADR431BRZ1
ADR431BRZ-REEL71
1
R-8
1,000
98
1
R-8
1
R-8
1,000
98
ADR433AR
4
0.13 10
0.13 10
0.13 10
0.13 10
0.13 10
0.13 10
0.13 10
0.13 10
R-8
ADR433AR-REEL7
ADR433ARZ1
ADR433ARZ-REEL71
4
R-8
1,000
98
4
R-8
4
R-8
1,000
50
ADR433ARM
4
RM-8
RM-8
RM-8
RM-8
R-8
RKA
RKA
R14
R14
ADR433ARM-REEL7
ADR433ARMZ1
ADR433ARMZ-REEL71
ADR433BR
4
1,000
50
4
4
1,000
98
1.5
1.5
1.5
1.5
5
0.05
0.05
0.05
0.05
3
3
3
3
ADR433BR-REEL7
ADR433BRZ1
ADR433BRZ-REEL71
R-8
1,000
98
R-8
R-8
1,000
98
ADR434AR
0.12 10
0.12 10
0.12 10
0.12 10
0.12 10
0.12 10
0.12 10
0.12 10
R-8
ADR434AR-REEL7
ADR434ARZ1
ADR434ARZ-REEL71
5
R-8
1,000
98
5
R-8
5
R-8
1,000
50
ADR434ARM
5
RM-8
RM-8
RM-8
RM-8
R-8
RLA
RLA
R16
R16
ADR434ARM-REEL7
ADR434ARMZ1
ADR434ARMZ-REEL71
ADR434BR
5
1,000
50
5
5
1,000
98
1.5
1.5
1.5
1.5
0.04
0.04
0.04
0.04
3
3
3
3
ADR434BR-REEL7
ADR434BRZ1
ADR434BRZ-REEL71
R-8
1,000
98
R-8
R-8
1,000
Rev. E | Page 22 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
Temperature
Coefficient
Package
Initial
Accuracy,
Output
Voltage (V) (mV) (%)
Temperature
Range
Package
Description
Package
Option
Ordering
Quantity
Model
(ppm/°C)
Branding
ADR435AR
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
5.000
4.500
4.500
4.500
4.500
4.500
4.500
4.500
4.500
4.500
4.500
4.500
4.500
6
0.12 10
–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
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead MSOP
8-Lead MSOP
8-Lead MSOP
8-Lead MSOP
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 MSOP
8-Lead MSOP
8-Lead MSOP
8-Lead MSOP
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
R-8
98
ADR435AR-REEL7
ADR435ARZ1
ADR435ARZ-REEL71
6
0.12 10
0.12 10
0.12 10
0.12 10
0.12 10
0.12 10
0.12 10
R-8
1,000
98
6
R-8
6
R-8
1,000
50
ADR435ARM
6
RM-8
RM-8
RM-8
RM-8
R-8
RMA
RMA
R18
ADR435ARM-REEL7
ADR435ARMZ1
ADR435ARMZ-REEL71
ADR435BR
6
1,000
50
6
6
1,000
98
R18
2
0.04
0.04
0.04
0.04
3
3
3
3
ADR435BR-REEL7
ADR435BRZ1
ADR435BRZ-REEL71
2
R-8
1,000
98
2
R-8
2
R-8
1,000
98
ADR439AR
5.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
2
0.12 10
0.12 10
0.12 10
0.12 10
0.12 10
0.12 10
0.12 10
0.12 10
R-8
ADR439AR-REEL7
ADR439ARZ1
ADR439ARZ-REEL71
R-8
1,000
98
R-8
R-8
1,000
50
ADR439ARM
RM-8
RM-8
RM-8
RM-8
R-8
RNA
RNA
R1C
R1C
ADR439ARM-REEL7
ADR439ARMZ1
ADR439ARMZ-REEL71
ADR439BR
1,000
50
1,000
98
0.04
0.04
0.04
0.04
3
3
3
3
ADR439BR-REEL7
ADR439BRZ1
ADR439BRZ-REEL71
2
R-8
1,000
98
2
R-8
2
R-8
1,000
1 Z = RoHS Compliant Part.
Rev. E | Page 23 of 24
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
NOTES
©2003–2009 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D04500-0-1/09(E)
Rev. E | Page 24 of 24
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