Datasheet AD8629-EP (Analog Devices)

Zero-Drift, Single-Supply, Rail-to-Rail Input/Output Operational Amplifier Data Sheet AD8629-EP FEATURES PIN CONFIGURATION Lowest auto-zero amplifier noise OUT A 1 8 V+ Low offset voltage: 1 μV typical –IN A 2 AD8629-EP 7 OUT B Input offset drift: 0.002 μV/°C typical +IN A TOP VIEW 3 6 –IN B (Not to Scale) Rail-to-rail input and output swing V– 4 5 +IN B
001
5 V single-supply operation
2890- 1
High gain, CMRR, and PSRR: 130 dB
Figure 1. 8-Lead SOIC_N (R-8)
Very low input bias current: 100 pA maximum GENERAL DESCRIPTION Low supply current: 1.0 mA
The AD8629-EP amplifier has ultralow offset, drift, and bias
Overload recovery time: 50 μs
current. The device is a wide bandwidth auto-zero amplifier
No external components required
featuring rail-to-rail input and output swing and low noise.
ENHANCED PRODUCT FEATURES
Operation is fully specified from 2.7 V to 5 V single supply
Supports defense and aerospace applications (AQEC standard)
(±1.35 V to ±2.5 V dual supply).
Extended temperature range: −55°C to +125°C
The AD8629-EP provides benefits previously found only in
Controlled manufacturing baseline
expensive auto-zeroing or chopper-stabilized amplifiers. Using
One assembly/test site
Analog Devices, Inc., topology, this zero-drift amplifier
One fabrication site
combines low cost with high accuracy and low noise. No
Enhanced product change notification
external capacitor is required. In addition, the AD8629-EP
Qualification data available on request
greatly reduces the digital switching noise found in most
APPLICATIONS
chopper-stabilized amplifiers. With an offset voltage of only 1 μV, drift of less than 0.05 μV/°C,
Pressure and position sensors
and noise of only 0.5 μV p-p (0 Hz to 10 Hz), the AD8629-EP is
Strain gage amplifiers Medical instrumentation
suited for applications where error sources cannot be tolerated.
Thermocouple amplifiers
Position and pressure sensors, medical equipment, and strain
Precision current sensing
gage amplifiers benefit greatly from nearly zero drift over the
Photodiode amplifiers
operating temperature range. Many systems can take advantage of the rail-to-rail input and output swings provided by the AD8629-EP to reduce input biasing complexity and maximize SNR. The AD8629-EP is specified for the extended industrial temperature range (−55°C to +125°C). The AD8629-EP is available in a standard 8-lead narrow SOIC plastic package.
Rev. A Document Feedback 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2002–2015 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline FEATURES ENHANCED PRODUCT FEATURES APPLICATIONS PIN CONFIGURATION GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ELECTRICAL CHARACTERISTICS—VS = 5.0 V ELECTRICAL CHARACTERISTICS—VS = 2.7 V ABSOLUTE MAXIMUM RATINGS THERMAL CHARACTERISTICS ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS OUTLINE DIMENSIONS ORDERING GUIDE