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PGA870 Schematic Check

Masaaki Sugiyama
Intellectual 530 points
Other Parts Discussed in Thread: PGA870, LMH6553, LMH6702

Dear support team

Our customer considers whether they add LMH6553 after PGA870.

This reason is the following

- Get 14db gain (differential input, single-end output)

- Limit 1V of output voltage peak

- Establish the high pass filter

- Establish the low pass filter


The schematic is the following.

Could you check the schematic ?

Best Regards

 Masaaki Sugiyama

  • 0
    TI__Genius 13935 points
    Hello Sugiyama-san,

    I see that this is a single ended input/single ended output application. Have you looked at the VCA82x series of amplifiers? Also the LMH6702 may be a useful gain block.

    As a general rule, using a differential amplifier for a single ended signal is a last resort.

    Regards,
    Loren