The AD627 is an integrated, micropower instrumentation amplifier that delivers rail-to-rail output swing on single and dual (+2.2 V to ±18 V) supplies. The AD627 provides excellent ac and dc specifications while operating at only 85 μA maximum.
The AD627 offers superior flexibility by allowing the user to set the gain of the device with a single external resistor while con-forming to the 8-lead industry-standard pinout configuration. With no external resistor, the AD627 is configured for a gain of 5. With an external resistor, it can be set to a gain of up to 1000.
A wide supply voltage range (+2.2 V to ±18 V) and micropower current consumption make the AD627 a perfect fit for a wide range of applications. Single-supply operation, low power consumption, and rail-to-rail output swing make the AD627 ideal for battery-powered applications. Its rail-to-rail output stage maximizes dynamic range when operating from low supply voltages. Dual-supply operation (±15 V) and low power consumption make the AD627 ideal for industrial applications, including 4 to 20 mA loop-powered systems.
The AD627 does not compromise performance, unlike other micropower instrumentation amplifiers. Low voltage offset, offset drift, gain error, and gain drift minimize errors in the system. The AD627 also minimizes errors over frequency by providing excellent CMRR over frequency. Because the CMRR remains high up to 200 Hz, line noise and line harmonics are rejected.
The AD627 provides superior performance, uses less circuit board area, and costs less than micropower discrete designs.
|Title||Content Type||File Type|
|AD627: Micropower, Single and Dual Supply Rail-to-Rail Instrumentation Amplifier Data Sheet (Rev E, 12/2013) (pdf, 1145 kB)||Data Sheets|
|AN-282: Fundamentals of Sampled Data Systems (pdf, 2131 kB)||Application Notes|
|AN-244: A User's Guide to I.C. Instrumentation Amplifiers (pdf, 522 kB)||Application Notes|
AN-245: Instrumentation Amplifiers Solve Unusual Design Problems
(pdf, 543 kB)
Traditionally Considered Only for Transducer-Conditioning Applications, Instrumentation Amplifiers Bring Unique Performance Benefits to a Range of Other Applications as Well.
|AN-671: Reducing RFI Rectification Errors in In-Amp Circuits (pdf, 208 kB)||Application Notes|
AN-589: Ways to Optimize the Performance of a Difference Amplifier
(pdf, 115 kB)
This Application Note presents several ways to build and optimize the performance of a discrete difference amplifier. It also recommends amplifiers that will make the overall solution cost/performance competitive with monolithic instrument amplifiers.
|A Designer's Guide to Instrumentation Amplifiers (3rd Edition)||Design Handbooks||HTML|
|UG-261: Evaluation Boards for the AD62x, AD822x and AD842x Series (pdf, 604 kB)||User Guides|
|MS-2178: Discussion Between CareFusion and Analog Devices: Optimizing Performance and Lowering Power in an EEG Amplifer (pdf, 147 kB)||Technical Articles|
(doc, 75 kB)
A wide variety of electronic applications, especially those involving very small input signals, require signal paths with very low offset voltage and offset voltage drift over time and temperature.
High-performance Adder Uses Instrumentation Amplifiers
Make an adder circuit using instrumentation amplifiers to increase input impedance.
|Piezoresistive Sensing ICs in Portable Infusion Pumps||Technical Articles||HTML|
|Oscillometric Blood Pressure Measurement||Technical Articles||HTML|
Protecting Instrumentation Amplifiers
(pdf, 474 kB)
... All data acquisition board designs have to contend with ESD, EMI, and overvoltages. Can one solution protect the circuitry against all three hazards?
(First published in the April 2000 issue of Sensors Magazine)
Input Filter Prevents Instrumentation-amp RF-Rectification Errors
by Charles Kitchin, Lew Counts, and Moshe Gerstenhaber, Analog Devices, Inc. (EDN, 11/13/2003)
|The AD8221 - Setting a New Industry Standard for Instrumentation Amplifiers (pdf, 582 kB)||Technical Articles|
|Applying Instrumentation Amplifiers Effectively: The Importance of an Input Ground Return (pdf, 508 kB)||Technical Documentation|
|Leading Inside Advertorials: Applying Instrumentation Amplifiers EffectivelyThe Importance of an Input Ground Return (pdf, 121 kB)||Overview|
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
|Title||Content Type||File Type|
In-Amp Error Calculator
These tools will help estimate error contributions in your instrumentation amplifier circuit. It uses input parameters such as temperature, gain, voltage input, and source impedance to determine the errors that can contribute to your overall design.
|AD627A SPICE Macro-Model||SPICE Models||HTML|
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.