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ADI Home Amplifiers & Linear Specialty Amplifiers Instrumentation Amplifiers

TECHNICAL RESOURCES

A des igners guide to ins trumentation am plifiers (3rd edition)

AN-202: An IC amplifie r users guide to decoup ling, grounding, and making

things go right for a change

AN-244: A users guide to I.C. instrum entation amplifiers

AN-245: Instrumentation am plifiers sol ve unusual des ign problems

Protecting ins trumentation amplifiers

Finding the needle in a haystack: measuring s mall differential voltages in the

presence of large comm on-mode voltages

All instrumentation amplifier app notes and tech articles

TUTORIALS

MT-061: Instrumentation amplifier (in-amp) basics

MT-066: In-amp bridge circuit error budget analysis

MT-065: In-amp noise

All instrumentation amplifier tutorials

View Circuit Notes for Instrumentation Amplifiers

Instrumentation amplifiers (in-amps) are precision gain blocks thathave a differential input and an output that may be differential, or s ingle-ended with respect to a reference terminal. These devices amplify thedifference between two input signal voltages while rejecting any signalsthat are common to both inputs. The in-amps are widely used in manyindustrial, measurement, data acquisition, and medical applicationswhere dc precision and gain accuracy must be maintained within anoisy environment, and where large common-mode signals (usually atthe ac power line frequency) are present. Analog Devices offers acomplete line of precision, low-noise, low-power in-amps with excellentCMRR (common mode rejection ratio) for every application andmarket.

A Programmable Gain Instrumentation Amplifier (PGiA) is a specialform of in-amp that has fixed gain levels. The appropriate gain level is

selected by digital means, either by dedicated program pins, or bysoftware interfaces (SPI or I2C). The PGiAs are perfect for thoseapplications where gain accuracy must be maximized, or where asingle PGiA can take the place of several in-amps of different gainsettings.

Select parts from the selection table below to download datasheetsand order samples.

Universal Evaluation Boards Boards are available for the AD62x andAD822x series. For all others, please click on the part# below and usethe evaluation board found on the product page.

Product Selection Guide for Instrumentation, Difference and Current-Sense Amplifiers (pdf)

Have questions about ADIs Amplifier products? Visit the AmplifiersSupport Community on EngineerZone.

Engineered. Tested. Ready to Integrate.

Instrumentation Amplifiers

4-20 mA Drivers

Programmable Gain Instrumentation Amplifiers

PRODUCT SELECTION TABLES

Instrumentation Amplifiers

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