Someone please tell me the difference between Single Supply and Dual Supply of Instrumentation Amplifier

fengran zheng

Other Parts Discussed in Thread: INA129, INA827, INA128

I can't find the difference between Single Supply and Dual Supply chips,seems like both can use Single Supply and Dual Supply power.

for example :ina827and ina129

over 8 years ago

0 Pete%20Semig over 8 years ago

TI__Mastermind 25775 points

Hello fengran,

Either the INA129 or the INA827 can use single or dual supplies. An instrumentation amplifier (like op amps) does not have an internal connection to ground.

If you interested in the single-supply operating region of the INA128/9, please download our INA Vcm vs. Vout tool (link below). You can select the INA128 and adjust the supplies as needed.

www.ti.com/.../ina-cmv-calc

Also, you may be interested in our TI Precision Labs series, specifically the lecture about op amp input common-mode range and output swing. The link is www.ti.com/precision-labs.

Finally, there is a blog that may be of interest too:

e2e.ti.com/.../how-instrumentation-amplifier-vcm-vs-vout-plots-change-with-supply-and-reference-voltage

0 fengran zheng over 8 years ago in reply to Pete%20Semig

Prodigy 20 points

Hi Pete.

Thanks for your reply.

then I think there is no need to separate Instrumentation Amplifier into Single Supply and Dual Supply,
this only cause confusion.

sorry for my bad English.

Regards,

Amplifiers

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Someone please tell me the difference between Single Supply and Dual Supply of Instrumentation Amplifier