ADR440 Analog Devices, Inc., ADR440 Datasheet

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ADR440

Manufacturer Part Number
ADR440
Description
Ultralow Noise, Ldo Xfet Voltage References With Current Sink And Source
Manufacturer
Analog Devices, Inc.
Datasheet

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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
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. 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.
+10 mA and −5 mA, respectively
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 Voltage
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)
©2005–2007 Analog Devices, Inc. All rights reserved.
GND
GND
V
V
NC
NC
TP
TP
IN
IN
1
2
3
4
1
2
3
4
(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

Related parts for ADR440

ADR440 Summary of contents

Page 1

... FEATURES Ultralow noise (0 Hz) 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 Superb temperature coefficient A Grade: 10 ppm/°C B Grade: 3 ppm/°C Low dropout operation: 500 mV Input range 500 mV OUT High output source and sink current +10 mA and −5 mA, respectively Wide temperature range: − ...

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 Electrical Characteristics ............................................. 7 Absolute Maximum Ratings ............................................................ 8 Thermal Resistance ...................................................................... 8 ESD Caution .................................................................................. 8 Typical Performance Characteristics ............................................. 9 REVISION HISTORY 8/07—Rev Rev. B Change to Table 2, Ripple Rejection Ratio Specification ...

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 B Grade LINE REGULATION LOAD REGULATION QUIESCENT CURRENT VOLTAGE NOISE VOLTAGE NOISE DENSITY TURN-ON SETTLING TIME 1 LONG-TERM STABILITY ...

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 B Grade LINE REGULATION LOAD REGULATION QUIESCENT CURRENT VOLTAGE NOISE VOLTAGE NOISE DENSITY TURN-ON SETTLING TIME LONG-TERM STABILITY ...

Page 5

... OUTPUT VOLTAGE HYSTERESIS RIPPLE REJECTION RATIO SHORT CIRCUIT TO GND SUPPLY VOLTAGE OPERATING RANGE SUPPLY VOLTAGE HEADROOM 1 The long-term stability specification is noncumulative. The drift in the subsequent 1000-hour period is significantly lower than in the first 1000-hour period. ADR440/ADR441/ADR443/ADR444/ADR445 = 0.1 μF, unless otherwise noted. Symbol Conditions ...

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 B Grade LINE REGULATION LOAD REGULATION QUIESCENT CURRENT VOLTAGE NOISE VOLTAGE NOISE DENSITY TURN-ON SETTLING TIME LONG-TERM STABILITY ...

Page 7

... OUTPUT VOLTAGE HYSTERESIS RIPPLE REJECTION RATIO SHORT CIRCUIT TO GND SUPPLY VOLTAGE OPERATING RANGE SUPPLY VOLTAGE HEADROOM 1 The long-term stability specification is noncumulative. The drift in the subsequent 1000-hour period is significantly lower than in the first 1000-hour period. ADR440/ADR441/ADR443/ADR444/ADR445 = 0.1 μF, unless otherwise noted. Symbol Conditions ...

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 Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only ...

Page 9

... Rev Page 2.051 2.050 2.049 2.048 2.047 2.046 2.045 –40 – TEMPERATURE (°C) Figure 6. ADR440 Output Voltage vs. Temperature 5.006 5.004 5.002 5.000 4.998 4.996 4.994 –40 – TEMPERATURE (°C) Figure 7. ADR445 Output Voltage vs. Temperature 4.0 3.5 +25° ...

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 (V) Figure 10. ADR445 Supply Current vs. Input Voltage 3.25 3.15 3.05 2.95 2.85 2.75 –40 –25 – TEMPERATURE (°C) Figure 11. ADR445 Quiescent Current vs. Temperature 110 125 +125°C +25°C –40°C 15 ...

Page 11

... LOAD CURRENT (mA) Figure 16. ADR441 Minimum Input/Output Differential Voltage vs. Load Current 0.5 0.4 0.3 0.2 0.1 0 –40 –25 – TEMPERATURE (°C) Figure 17. ADR441 Minimum Headroom vs. Temperature ADR440/ADR441/ADR443/ADR444/ADR445 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0 110 125 –5 0.5 0.4 0.3 +25°C –40°C 0.2 0 –40 Figure 19. ADR445 Minimum Headroom vs. Temperature ...

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 = 0.1µ 10µF OUT 4V TIME = 100µs/DIV Figure 23. ADR441 Line Transient Response V = 5V/DIV 1V/DIV OUT TIME = 200µ ...

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 Voltage Noise ADR440/ADR441/ADR443/ADR444/ADR445 CH1 p-p 8 49µ Figure 30. ADR441 Typical Output Voltage Hysteresis ...

Page 14

... NOISE PERFORMANCE The noise generated by the ADR44x family of references is typically less than 1.4 μV p-p over the 0 10.0 Hz band for ADR440, ADR441, and ADR443. Figure 26 shows the 0 noise of the ADR441, which is only 1.2 μV p-p. The noise measurement is made with a band-pass filter made of a 2­ ...

Page 15

... V IN ADR440/ ADR441/ ADR443/ ADR444/ ADR445 V +5V 6 OUT R1 R2 0.1µF GND 10kΩ 10kΩ 4 +10V –5V R3 5kΩ –10V Figure 36. ADR44x Bipolar Outputs + ADR440/ ADR441/ ADR443/ ADR444/ ADR445 V 6 OUT GND 4 –V REF –V DD Figure 37. ADR44x Negative Reference ...

Page 16

... Rev Page ADR440/ ADR441/ ADR443/ ADR444/ ADR445 V OUT 6 GND 0.1µF 4 AD5259 Figure 39. Programmable Current Source +V S SST111 VISHAY ADR440/ ADR441/ ADR443/ ADR444/ ADR445 V OUT 6 OP90 2N3904 GND 4 –V S Figure 40. Floating Current Source R SENSE I LOAD ...

Page 17

... V to equal the V . Current is then drawn from V O REF increased current drive capability. The circuit allows load; if higher current drive is required, use a larger MOSFET. For fast transient response, add a buffer at V capacitive loading. ADR440/ADR441/ADR443/ADR444/ADR445 2N7002 200Ω ...

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 (0.0067) 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 42 ...

Page 19

... ORDERING GUIDE Output Model Voltage (V) 1 ADR440ARZ 2.048 1 ADR440ARZ-REEL7 2.048 1 ADR440ARMZ 2.048 1 ADR440ARMZ-REEL7 2.048 1 ADR440BRZ 2.048 ADR440BRZ-REEL7 1 2.048 1 ADR441ARZ 2.500 1 ADR441ARZ-REEL7 2.500 1 ADR441ARMZ 2.500 ADR441ARMZ-REEL7 1 2.500 1 ADR441BRZ 2.500 ADR441BRZ-REEL7 1 2.500 1 ADR443ARZ 3.000 ADR443ARZ-REEL7 1 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, provided that the system conforms to the I ©2005–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners ...

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