ADR440A AD [Analog Devices], ADR440A Datasheet

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ADR440A

Manufacturer Part Number
ADR440A
Description
Ultralow Noise, LDO XFET Voltage References with Current Sink and Source
Manufacturer
AD [Analog Devices]
Datasheet
1.ADR440A.pdf (20 pages)

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FEATURES
Ultralow noise (0.1 Hz to 10 Hz)
Superb temperature coefficient
Low dropout operation: 500 mV
Input range: (V
High output source and sink current: +10 mA and −5 mA
Wide temperature range: −40°C to +125°C
APPLICATIONS
Precision data acquisition systems
High resolution data converters
Battery-powered instrumentations
Portable medical instruments
Industrial process control systems
Precision instruments
Optical control circuits
GENERAL DESCRIPTION
The ADR44x series is a family of XFET voltage references
featuring ultralow 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 ADR44x is greatly minimized.
The XFET references offer better noise performance than
buried Zener references, and XFET references operate off
low supply voltage headroom (0.5 V). This combination of
features makes the ADR44x family ideally suited for precision
signal conversion applications in high-end data acquisition
systems, optical networks, and medical applications.
The ADR44x family has the capability to source up to 10 mA of
output current and sink up to 5 mA. It also comes with a trim
terminal to adjust the output voltage over a 0.5% range without
compromising performance.
Rev. A
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.
ADR440: 1 μV p-p
ADR441: 1.2 μV p-p
ADR443: 1.4 μV p-p
ADR444: 1.8 μV p-p
ADR445: 2.25 μV p-p
A Grade: 10 ppm/°C
B Grade: 3 ppm/°C
OUT
+ 500 mV) to 18 V
ADR440/ADR441/ADR443/ADR444/ADR445
References with Current Sink and Source
Ultralow Noise, LDO XFET
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
Offered in two electrical grades, the ADR44x family is avail-
able in 8-lead MSOP and narrow SOIC packages. All versions
are specified over the extended industrial temperature range of
−40°C to +125°C.
Table 1. Selection Guide
Model
ADR440A
ADR440B
ADR441A
ADR441B
ADR443A
ADR443B
ADR444A
ADR444B
ADR445A
ADR445B
Output
Voltage
(V)
2.048
2.048
2.500
2.500
3.000
3.000
4.096
4.096
5.000
5.000
NOTES
1. NC = NO CONNECT
2. TP = TEST PIN (DO NOT CONNECT)
NOTES
1. NC = NO CONNECT
2. TP = TEST PIN (DO NOT CONNECT)
PIN CONFIGURATIONS
Figure 2. 8-Lead MSOP (RM-Suffix)
Figure 1. 8-Lead SOIC_N (R-Suffix)
GND
GND
V
V
NC
NC
TP
TP
IN
IN
1
2
3
4
1
2
3
4
©2006 Analog Devices, Inc. All rights reserved.
(Not to Scale)
(Not to Scale)
ADR440/
ADR441/
ADR443/
ADR444/
ADR440/
ADR441/
ADR443/
ADR444/
ADR445
TOP VIEW
ADR445
TOP VIEW
Initial
Accuracy, ±
(mV)
3
1
3
1
4
1.2
5
1.6
6
2
8
7
6
5
8
7
6
5
TP
NC
V
TRIM
TP
NC
V
TRIM
OUT
OUT
®
Temperature
Coefficient
(ppm/°C)
10
3
10
3
10
3
10
3
10
3
www.analog.com
Voltage

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ADR440A Summary of contents

Page 1

... Offered in two electrical grades, the ADR44x family is avail- able in 8-lead MSOP and narrow SOIC packages. All versions are specified over the extended industrial temperature range of −40°C to +125°C. Table 1. Selection Guide Output Voltage (V) Model ADR440A 2.048 ADR440B 2.048 ADR441A 2.500 ADR441B 2.500 ADR443A 3 ...

Page 2

ADR440/ADR441/ADR443/ADR444/ADR445 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Pin Configurations ........................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 ADR440 Electrical Characteristics............................................. 3 ADR441 Electrical Characteristics............................................. 4 ADR443 Electrical Characteristics............................................. 5 ADR444 Electrical Characteristics............................................. 6 ADR445 ...

Page 3

SPECIFICATIONS ADR440 ELECTRICAL CHARACTERISTICS 25° OUT Table 2. Parameter OUTPUT VOLTAGE A Grade B Grade INITIAL ACCURACY A Grade B Grade TEMPERATURE DRIFT A Grade ...

Page 4

ADR440/ADR441/ADR443/ADR444/ADR445 ADR441 ELECTRICAL CHARACTERISTICS 25° OUT Table 3. Parameter OUTPUT VOLTAGE A Grade B Grade INITIAL ACCURACY A Grade B Grade TEMPERATURE DRIFT A Grade ...

Page 5

ADR443 ELECTRICAL CHARACTERISTICS 25° OUT Table 4. Parameter OUTPUT VOLTAGE A Grade B Grade INITIAL ACCURACY A Grade B Grade TEMPERATURE DRIFT A Grade B ...

Page 6

ADR440/ADR441/ADR443/ADR444/ADR445 ADR444 ELECTRICAL CHARACTERISTICS 25° OUT Table 5. Parameter OUTPUT VOLTAGE A Grade B Grade INITIAL ACCURACY A Grade B Grade TEMPERATURE DRIFT A Grade ...

Page 7

ADR445 ELECTRICAL CHARACTERISTICS 25° OUT Table 6. Parameter OUTPUT VOLTAGE A Grade B Grade INITIAL ACCURACY A Grade B Grade TEMPERATURE DRIFT A Grade B ...

Page 8

ADR440/ADR441/ADR443/ADR444/ADR445 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 7. Parameter Supply Voltage Output Short-Circuit Duration to GND Storage Temperature Range Operating Temperature Range Junction Temperature Range Lead Temperature, Soldering (60 sec) Stresses above those listed under ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS 25° 0.1 μF, unless otherwise noted OUT 2.5020 2.5015 2.5010 2.5005 2.5000 2.4995 2.4990 –40 –25 – TEMPERATURE (°C) Figure ...

Page 10

ADR440/ADR441/ADR443/ADR444/ADR445 4.0 3.5 3.0 2.5 2.0 –40 –25 – TEMPERATURE (°C) Figure 9. ADR441 Supply Current vs. Temperature 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 5.3 7.3 9.3 11.3 13.3 INPUT VOLTAGE ...

Page 11

I = 0mA TO +10mA LOAD –10 – 0mA TO –5mA LOAD –30 –40 –50 –40 –25 – TEMPERATURE (°C) Figure 15. ...

Page 12

ADR440/ADR441/ADR443/ADR444/ADR445 0.1µF IN OUT TIME = 200µs/DIV Figure 21. ADR441 Turn-Off Response C = 0.1µ 10µF OUT V = 5V/DIV 1V/DIV OUT Figure 22. ADR441 Turn-On Response C = 0.1µF ...

Page 13

TIME = 1s/DIV Figure 27. ADR441 kHz Voltage Noise 1µV/DIV TIME = 1s/DIV Figure 28. ADR445 0 10.0 Hz Voltage Noise 50µV/DIV TIME = 1s/DIV Figure 29. ADR445 kHz ...

Page 14

ADR440/ADR441/ADR443/ADR444/ADR445 THEORY OF OPERATION The ADR44x series of references uses a new reference generation technique known as XFET (eXtra implanted junction FET). This technique yields a reference with low dropout, good thermal hysteresis, and exceptionally low noise. The core of ...

Page 15

APPLICATIONS OUTPUT ADJUSTMENT The ADR44x family features a TRIM pin that allows the user to adjust the output voltage of the part over a limited range. This allows errors from the reference and overall system errors to be trimmed out ...

Page 16

ADR440/ADR441/ADR443/ADR444/ADR445 PROGRAMMABLE VOLTAGE SOURCE To obtain different voltages than those offered by the ADR44x, some extra components are needed. In Figure 38, two potentiometers are used to set the desired voltage, while the buffering amplifier provides current drive. The potentiometer ...

Page 17

PRECISION OUTPUT REGULATOR (BOOSTED REFERENCE ADR440/ ADR441/ ADR443/ ADR444/ C 15V IN ADR445 0.1µF V OUT 6 C OUT GND 0.1µF –V 4 Figure 41. Boosted Output Reference Higher current drive capability can be obtained, ...

Page 18

ADR440/ADR441/ADR443/ADR444/ADR445 OUTLINE DIMENSIONS 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2440) 4.00 (0.1574) 5.80 (0.2284) 3.80 (0.1497 1.27 (0.0500) BSC 1.75 (0.0688) 1.35 (0.0532) 0.25 (0.0098) 0.10 (0.0040) 0.51 (0.0201) COPLANARITY 0.25 (0.0098) 0.31 (0.0122) SEATING 0.10 0.17 ...

Page 19

... ORDERING GUIDE Output Model Voltage (V) 1 ADR440ARZ 2.048 ADR440ARZ-REEL7 1 2.048 1 ADR440ARMZ 2.048 ADR440ARMZ-REEL7 1 2.048 1 ADR440BRZ 2.048 ADR440BRZ-REEL7 1 2.048 1 ADR441ARZ 2.500 ADR441ARZ-REEL7 1 2.500 1 ADR441ARMZ 2.500 1 ADR441ARMZ-REEL7 2.500 1 ADR441BRZ 2.500 1 ADR441BRZ-REEL7 2.500 1 ADR443ARZ 3.000 1 ADR443ARZ-REEL7 3.000 1 ADR443ARMZ 3.000 1 ADR443ARMZ-REEL7 3.000 1 ADR443BRZ 3.000 1 ADR443BRZ-REEL7 3 ...

Page 20

ADR440/ADR441/ADR443/ADR444/ADR445 NOTES Purchase of licensed components of Analog Devices or one of its sublicensed Associated Companies conveys a license for the purchaser under the Philips I 2 Rights to use these components system, ...

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