Opamp selection

Hi,

I am interested in an opamp with the following specs and I was wondering if anyone can help me with finding it here.

  • Dual supply operation (+/-3V)
  • Ultra low supply current (less than 100uA)
  • Low offset voltage
  • 4 circuits
  • Minimum slew rate: 2V/us
  • Comes in 16-LFCSP packaging

I am interested in using this opamp to build a current source which will supply a current up to +/-100uA across a maximum load resistance of 50kohm.

Thank you very much.

Parents
  • Hello,

    I purchased the ADA4096-4  and tested it. Since the slew rate listed on the datasheet is 0.25v/us, I was expecting that at a generated output pulse of 2.5V, Ithe rise time would be 10us. This is not the case. Rather, I got a rise time of a little over 75us. Can anyone explain this to me?

    Do you suggest any other opamps that truly provide 10us rise time for an output pulse that goes from 0 to 2.5V?

    Thank you,

    Sara

Reply
  • Hello,

    I purchased the ADA4096-4  and tested it. Since the slew rate listed on the datasheet is 0.25v/us, I was expecting that at a generated output pulse of 2.5V, Ithe rise time would be 10us. This is not the case. Rather, I got a rise time of a little over 75us. Can anyone explain this to me?

    Do you suggest any other opamps that truly provide 10us rise time for an output pulse that goes from 0 to 2.5V?

    Thank you,

    Sara

Children
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