AD620A DATASHEET PDF

ADA Low Drift, Low Power Instrumentation Amp With Set Gains of 1 to FEATURES EASY TO USE Gain Set with One External Resistor (Gain Range to. ADA datasheet, ADA circuit, ADA data sheet: AD – Low Cost, Low Power Instrumentation Amplifier,alldatasheet, datasheet, Datasheet search site for. ADA Datasheet, ADA PDF, ADA Data sheet, ADA manual, ADA pdf, ADA, datenblatt, Electronics ADA, alldatasheet, free, datasheet.

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It seems that the gain is strongly dependent on the voltage of the reference pin. If I set the pot at precisely 2. But even slighly higher or lower and the gain reduces significantly.

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ADA Datasheet, PDF – Alldatasheet

I’ve been taking measurements with a standard multimeter. I haven’t done meticulous testing with this, but none the less have lost a fair bit of hair. Is there something obviously wrong with what I’m doing? I must have run through the figures in the datasheet two dozen times. Is it the circuit at fault?

Notice the small block diagram in Fig. Notice that VREF is not a high impedance input.

In order not to skew the differential output stage, VREF should be connected to a low impedance output. A voltage divider by itself is not a low impedance output. However, the voltage divider can be buffered.

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I have built and tested a similar circuit. In my case, the VREF came a source other than a potentiometer, though.

By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Home Questions Tags Users Unanswered. AKR 1, 3 14 CL22 3, 5 31 With a multimeter it’s difficult to measure gain – what was your method? I got bit by this error once.

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I had connected the ref pin of an instrumentation amp straight to a potentiometer. It has interesting effects. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.

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