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OPA1652: Better solution need

Roy Chou1
Genius 12635 points
Part Number: OPA1652
Other Parts Discussed in Thread: OPA1678

Hi team,

My customer would like to find the similar or better solution for OPA1652. Could you suggest us corresponding part number? Below is the requirements.

  1. Operating voltage: Support single power :  4.5V ~ 16V
  2. Package: 8Pin Pin to Pin VSSOP
  3. Low Noise: ≦ 4.5 nV/√Hz @1 kHz  & ≦ 3.8 nV/√Hz @10 kHz
  4. Unit Price:  ≦ OPA1652  
  5. temp:  -40°C ~ +85°C
  6. Bandwidth: Audio Band 20HZ~20KHZ
  7. Application : Microphone  single input and differential output Gain <1dB  (Mic -38dBV SNR:65dBA， Differential Output -31dBV  SNR: ≧62dBA)

Roy

  • 0
    TI__Guru* 93105 points

    Hi Roy,

    I noticed that you are indicating "differential output" specifications for the audio op amp. If so, based on all the requirements you have listed, the OPA1678 looks like it would be a best fit:

    https://www.ti.com/lit/ds/symlink/opa1678.pdf

    Note the 1 ku price of the OPA1678 compared to the OPA1652 listed on their web pages.

    I do suggest you contact the Precision Amplifiers Marketing team internally for more ideas on other possible OPA1652 replacement solutions.

    Regards, Thomas

    Precision Amplifiers Applications Engineering