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  • OPA1664: OPA1664

    Part Number: OPA1664 Tool/software: I have designed a single supply ( 5 Volt) audio circuit based on OPA1664. the circuit is as below: Now I am getting noise at the output (VF2) . Also I noticed that Biasing voltage at all the non inverting terminals…
    • Answered

  • 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
    • Answered

  • OPA1664: I need a delay of 1.25ms till upper limit of 400Hz

    Resolved
    Part Number: OPA1664 Tool/software: Hi, I want to use OPA1664 for audio delay by modifying the delay in Figure 30 of www.ti.com/.../tidu035.pdf I need a delay of 1.25ms till upper limit of 400Hz. Can you please tell below? 1) Is OPA1664 suitable…
    • 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

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