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LMC6035: Input capacitance value

yoshihiro hirata
Expert 1425 points
Part Number: LMC6035
Other Parts Discussed in Thread: LMC7111, LPV521, , TLV9001, TLV9061

Our customer are looking for low bias current and low input capacitance opamp.

Their require specs are below.
Could you let me know a good suggestion?

- require specs
  VCC = 3.3V or 5V (Must)
  IB(Input Bias Current) < 1pA (Want)
  Input Capacitance < 1pF (Want)
  Channel: 1ch (Want)
  Packeage: Small (Want)


LMC7111, LPV521 and LMC6035 are meet their require spec other than "Input Capacitance".
Could you let me know these input capacitance value.
We will use this value for reference, not guarantee.

Best Regards,
Y. Hirata

  • 0
    Guru 140200 points
    Hi Yoshihiro,

    the spice models of LMC6035 and LMC7111 mention a common mode input capacitance of 1pF.

    Kai
  • 0 in reply to kai klaas69
    TI__Mastermind 30600 points
    Hi Yoshihiro-san,

    From the datasheet, the LMC7111 has an input capacitance of 3pF. I would expect that the other devices have similar levels of common mode input capacitance, there aren't many devices with 1pF of common mode input capacitance.

    For many of your other requirements, I would make sure to look at the TLV9001 and TLV9061 - they will have the best small package options of any devices in our portfolio.

    Best,
    Paul