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OPA547: Constant AC current source

Lathaniveatha P
Prodigy 50 points
Part Number: OPA547

Tool/software:

Hi,

I want to design a constant AC current source of current variable upto +/-400mA. 

The frequency of the current source will be max 100Hz. 

Can somebody tell me whether Ti has a readymade solution for this?

I came across Improved howland current pump using OPA547 for Ipk approx.311mA, attached below. But we required for +/-400mA and input volatge range is +/-10V.Could you please share the relevant circuit for this?

 

e2e.ti.com/.../constant-ac-current-source

  • 0
    TI__Genius 14636 points

    Hi Lathaniveatha,

    You are on the right path here, yes the OPA547 is the most suited device for your application requirements.

    What are your accuracy requirements in this application? What input range do you want for this design?

     I can design similar circuit for your desired implementation.

    Thanks,

    Jacob