ADR431B AD [Analog Devices], ADR431B Datasheet

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ADR431B

Manufacturer Part Number
ADR431B
Description
Ultralow Noise XFET Voltage References with Current Sink and Source Capability
Manufacturer
AD [Analog Devices]
Datasheet

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Part Number:
ADR431B
Manufacturer:
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20 000
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ADR431BRZ
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A
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Quantity:
20 000
FEATURES
Low noise (0.1 Hz to 10 Hz): 3.5 µV p-p @ 2.5 V output
No external capacitor required
Low temperature coefficient
Load regulation: 15 ppm/mA
Line regulation: 20 ppm/V
Wide operating range
High output current: +30 mA/−20 mA
Wide temperature range: −40°C to +125°C
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 ADI’s patented temperature drift curvature
correction and XFET (eXtra implanted junction FET) technology,
the ADR43x’s voltage change versus temperature nonlinearity is
minimized.
The XFET references operate at lower current (800 µA) and
supply headroom (2 V) than buried-Zener references. Buried-
Zener references require more than 5 V headroom for operations.
The ADR43x XFET references are the only low noise solutions
for 5 V systems.
The ADR43x series has the capability to source up to 30 mA
and sink up to 20 mA of output current. It also comes with a
TRIM terminal to adjust the output voltage over a 0.5% range
without compromising performance. The ADR43x is available
in the 8-lead mini SOIC and 8-lead SOIC packages.
Rev. B
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
registered trademarks are the property of their respective owners.
A Grade: 10 ppm/°C max
B Grade: 3 ppm/°C max
ADR430: 4.1 V to 18 V
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
ADR439: 6.5 V to 18 V
Ultralow Noise XFET
ADR430/ADR431/ADR433/ADR434/ADR435/ADR439
with Current Sink and Source Capability
All versions are specified over the extended industrial tempera-
ture range (−40°C to +125°C).
Table 1. Selection Guide
Model
ADR430B
ADR430A
ADR431B
ADR431A
ADR433B
ADR433A
ADR434B
ADR434A
ADR435B
ADR435A
ADR439B
ADR439A
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
V
2.048
2.048
2.500
2.500
3.000
3.000
4.096
4.096
5.000
5.000
4.500
4.500
OUT
GND
GND
PIN CONFIGURATIONS
V
V
NC
NC
(V)
TP
TP
IN
IN
®
© 2004 Analog Devices, Inc. All rights reserved.
NC = NO CONNECT
NC = NO CONNECT
1
2
3
4
1
2
3
4
Figure 1. 8-Lead MSOP
Figure 2. 8-Lead SOIC
Voltage References
(Not to Scale)
(Not to Scale)
Accuracy
(mV)
±1
±3
±1
±3
±1.4
±4
±1.5
±5
±2
±6
±2
±5.4
ADR43x
ADR43x
TOP VIEW
TOP VIEW
(RM Suffix)
(R Suffix)
8
7
6
5
8
7
6
5
Temperature Coefficient
(ppm/°C)
3
10
3
10
3
10
3
10
3
10
3
10
TP
NC
V
TRIM
TP
NC
V
TRIM
OUT
OUT
www.analog.com

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ADR431B Summary of contents

Page 1

... PIN CONFIGURATIONS GND GND All versions are specified over the extended industrial tempera- ture range (−40°C to +125°C). Table 1. Selection Guide Model V OUT ADR430B 2.048 ADR430A 2.048 ADR431B 2.500 ADR431A 2.500 ADR433B 3.000 ADR433A 3.000 ADR434B 4.096 ADR434A 4.096 ADR435B 5 ...

Page 2

ADR430/ADR431/ADR433/ADR434/ADR435/ADR439 TABLE OF CONTENTS 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 Package Type ................................................................................. 9 ESD Caution.................................................................................. ...

Page 3

SPECIFICATIONS ADR430 ELECTRICAL CHARACTERISTICS 25°C, unless otherwise noted. IN LOAD A Table 2. Parameter Output Voltage B Grade A Grade Initial Accuracy B Grade B Grade A ...

Page 4

ADR430/ADR431/ADR433/ADR434/ADR435/ADR439 ADR431 ELECTRICAL CHARACTERISTICS 25°C, unless otherwise noted. IN LOAD A Table 3. Parameter Output Voltage B Grade A Grade Initial Accuracy B Grade B Grade A ...

Page 5

ADR433 ELECTRICAL CHARACTERISTICS 25°C, unless otherwise noted. IN LOAD A Table 4. Parameter Output Voltage B Grade A Grade Initial Accuracy B Grade B Grade A ...

Page 6

ADR430/ADR431/ADR433/ADR434/ADR435/ADR439 ADR434 ELECTRICAL CHARACTERISTICS 25°C, unless otherwise noted. IN LOAD A Table 5. Parameter Symbol Output Voltage B Grade V A Grade V Initial Accuracy B Grade ...

Page 7

ADR435 ELECTRICAL CHARACTERISTICS mA 25°C, unless otherwise noted. IN LOAD A Table 6. Parameter Symbol Output Voltage B Grade V A Grade V Initial Accuracy B Grade V ...

Page 8

ADR430/ADR431/ADR433/ADR434/ADR435/ADR439 ADR439 ELECTRICAL CHARACTERISTICS 25°C, unless otherwise noted. IN LOAD A Table 7. Parameter Symbol Output Voltage B Grade V A Grade V Initial Accuracy B Grade ...

Page 9

ABSOLUTE MAXIMUM RATINGS @ 25°C, unless otherwise noted. Table 8. Parameter Supply Voltage Output Short-Circuit Duration to GND Storage Temperature Range (R, RM Packages) Operating Temperature Range Junction Temperature Range Lead Temperature Range (Soldering Stresses above those listed ...

Page 10

ADR430/ADR431/ADR433/ADR434/ADR435/ADR439 TYPICAL PERFORMANCE CHARACTERISTICS Default conditions: ± pF 2.5009 2.5007 2.5005 2.5003 2.5001 2.4999 2.4997 2.4995 –40 –25 – TEMPERATURE (°C) Figure 3. ADR431 V vs. ...

Page 11

TEMPERATURE (°C) Figure 9. ADR431 Supply Current vs. Temperature 0mA to 10mA –40 –25 ...

Page 12

ADR430/ADR431/ADR433/ADR434/ADR435/ADR439 1.9 1.7 1.5 1.3 1.1 0.9 –40 –25 – TEMPERATURE (°C) Figure 15. ADR435 Minimum Headroom vs. Temperature –4 –40 –25 – TEMPERATURE ...

Page 13

LINE BYPASS CAPACITOR = 0.1µF INTERRUPTION 500mV/DIV 50mV/DIV OUT TIME = 100µs/DIV Figure 21. ADR431 Line Transient Response—0.1 µF Bypass Capacitor 1µV/DIV TIME = 1s/DIV Figure 22. ADR431 0 10.0 Hz Voltage Noise 50µV/DIV ...

Page 14

ADR430/ADR431/ADR433/ADR434/ADR435/ADR439 100 1k 10k FREQUENCY (Hz) Figure 27. Output Impedance vs. Frequency 10 –10 –30 –50 –70 ADR435 –90 –110 ADR430 –130 –150 100k 10 Rev Page ...

Page 15

THEORY OF OPERATION The ADR43x series of references uses a new 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 ...

Page 16

ADR430/ADR431/ADR433/ADR434/ADR435/ADR439 APPLICATIONS OUTPUT ADJUSTMENT The ADR43x trim terminal can be used to adjust the output 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 ...

Page 17

OUT ADR43x GND 4 A1 – OP777, OP193 DD Figure 33. Negative Reference HIGH VOLTAGE FLOATING CURRENT SOURCE The circuit in Figure 34 can be used to generate a floating ...

Page 18

ADR430/ADR431/ADR433/ADR434/ADR435/ADR439 PROGRAMMABLE CURRENT SOURCE Together with a digital potentiometer and a Howland current pump, ADR435 forms the reference source for a programmable current as + ⎛ ⎞ ⎜ ⎟ ⎜ ⎟ × I ...

Page 19

PRECISION VOLTAGE REFERENCE FOR DATA CONVERTERS 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 ...

Page 20

ADR430/ADR431/ADR433/ADR434/ADR435/ADR439 OUTLINE DIMENSIONS 3.00 BSC 8 5 3.00 4.90 BSC BSC 4 PIN 1 0.65 BSC 1.10 MAX 0.15 0.00 0.38 0.23 0.22 0.08 COPLANARITY SEATING 0.10 PLANE COMPLIANT TO JEDEC STANDARDS MO-187AA Figure 42. 8-Lead Mini Small Outline Package ...

Page 21

... ADR430AR-REEL7 2.048 ADR430ARM 2.048 ADR430ARM-REEL7 2.048 ADR430BR 2.048 ADR430BR-REEL7 2.048 ADR431AR 2.500 ADR431AR-REEL7 2.500 ADR431ARM 2.500 ADR431ARM-REEL7 2.500 ADR431BR 2.500 ADR431BR-REEL7 2.500 ADR433AR 3.000 ADR433AR-REEL7 3.000 ADR433ARM 3.000 ADR433ARM-REEL7 3.000 ADR433BR 3.000 ADR433BR-REEL7 3.000 ADR434AR 4.096 ADR434AR-REEL7 4.096 ADR434ARM 4.096 ADR434ARM-REEL7 4 ...

Page 22

ADR430/ADR431/ADR433/ADR434/ADR435/ADR439 NOTES Rev Page ...

Page 23

NOTES ADR430/ADR431/ADR433/ADR434/ADR435/ADR439 Rev Page ...

Page 24

ADR430/ADR431/ADR433/ADR434/ADR435/ADR439 NOTES © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D04500–0–9/04(B) Rev Page ...

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