PGA2320: Minimum Input Impedance

Art Mecina

Part Number: PGA2320

Hello Guys,

Good day. One of our customer is looking for the input impedance (minimum) itself of the PGA2320
because the once specified on the datasheet is the source impedance of the previous stage
which should be less than 600ohms.

Thanks for the confirmation.

Art

over 4 years ago

0 Tamara M Alani over 4 years ago

TI__Genius 10850 points

Hi Art,

Looking into the input of the PGA2320, you will always see 12k-ohm (typical), regardless of the attenuation/gain chosen. Current will flow through the resistors and not into the MUX:

0 Art Mecina over 4 years ago in reply to Tamara M Alani

TI__Genius 16585 points

Thanks for looking into this Tamara!

Art

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PGA2320: Minimum Input Impedance