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  • OPA1664: Dual supply with different rise time

    Resolved
    Part Number: OPA1664 Tool/software: Hi Team, We are using OPA1664 with dual +5V and -5V power supply at our analog front end to ADC. In our application it is expected to ramp -5V supply earlier than +5V supply. Is there any issue due to this different…
    • Resolved

  • OPA1664: OPA1664 over heat

    TI Thinks Resolved
    Part Number: OPA1664 Other Parts Discussed in Thread: DAC8718 Hi Team, Please see below circuit of DAC output, this circuit is working fine, Please see the net name of VOUT_1...3, If unfortunately, I apply the +24V input on these output pins means circuit…

  • OPA1664: Help in component selection

    Part Number: OPA1664 Hi I am using opamp as a voltage follower for one application. I am using a filter circuit for the output as shown below. Can anyone suggest how to select the values for diode, transistor and resistor values? Thanks in…
    • Answered

  • RE: WEBENCH® Tools/OPA1664: Low pass filter ; capacitor size too big generated from Webench

    Resolved
    Hi Tapas Pandey39, The issue with C0G/NP0 ceramics in small packages is that the C0G dielectric has a low-k, or relative permittivity. This unfortunately means that they can have less capacitance in a given volume than a Class-2 ceramic material (like…
    • Answered

  • OPA1664 Pspice model

    Resolved
    Other Parts Discussed in Thread: OPA1664 hi all, im using a cadence work space |(orcad/pspice) im looking for a pspice model for OPA1664. on the web there is only TINA TI model. there is a way to convert TINA to Pspice model? thanks
    • Resolved

  • OPA1664

    Other Parts Discussed in Thread: OPA1664 The 100Hz noise voltage spec in the data sheet data table does not agree with the noise curve shown in Figure 1. Thank God TI finally has titled its data sheet file "opa1664.pdf" instead of some incomprehensive…
    • Answered

  • RE: OPA1664: Output voltage is significantly reduced from pre-amplifier when capacitor is used in the microphone output.

    Resolved
    Hello Tapas, The issue you are seeing with the high output referred voltage offset at each stage is due to the OPA1664 input bias current flowing through the filter's various resistor paths. The input bias current for the OPA1664 is typically about…
    • Answered

  • TINA/Spice/OPA1664: PSpice model of OPA1662 is not compatible with other PSpice models of OPA1602 or OPA1652? Syntactic error from PSpice solver...

    Resolved
    Part Number: OPA1664 Other Parts Discussed in Thread: TINA-TI , , OPA1662 , OPA1602 , OPA1652 , LME49990 , LME49723 , LME49600 , LME49860 Tool/software: TINA-TI or Spice Models Hi, I have a problem with last (date: 03 Oct 2018) OPA1662 PSpice Model of…
    • Resolved

  • RE: OPA1664: Signal is getting distorted at the fourth stage of the Op Amp, Sallen Key configuration

    Hi Tapas, please let us know whether you still need support for your issue. Best, Miriam

  • What is the max output current of the OPA1664 with a +-12v supply

    Other Parts Discussed in Thread: OPA1664 I'm trying to determine the max output current of the OPA1664 with a +-12v supply. The data sheet refers you to the typical characteristics graph. Operating conditions are VS+-15V, Rl=2k unless otherwise noted…

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