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Can INA128P operate like single supply

Armando Ferreira
Expert 1945 points
Other Parts Discussed in Thread: INA128

Hi, 

I'm trying to build an electrocardiogram, But I'm using a INA128P double supply, and all my system should be work in 0-5V single supply, so how can put in the "ground" of INA128P 2.5V,  (half 5V). can you help me with a schema i dont know much about electronic.

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    TI__Genius 15410 points

    Yes, you can supply the INA128 with a single supply of 5V. The INA128 can be used with dual supplies of +/-2.25V to +/-18V or single supplies of +4.5V to +36V. With a single supply the V+ pin is connected to a voltage between +4.5V and +18V and V- pin is conntected to ground. When using single supplies be sure to stay within the common mode voltage range of the device, please see figures titled INPUT COMMON-MODE RANGE vs OUTPUT VOLTAGE in the INA128 datasheet for these limitations.

    Please visit this link for more information concerning ECG signal acquisition. It has a few links to some useful information.

    http://e2e.ti.com/support/amplifiers/precision_amplifiers/w/design_notes/2437.ecg-heart-signal-acquisition.aspx

    Hope this helps!

    -Tim Claycomb