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INA1620: Schematic verification

Mani Selvam Palanivel
Intellectual 360 points
Part Number: INA1620


Hi Sir,

My requirement:

============

I am going to use one of TI audio Amplifier INA1620 in my project as unity gain amplifier and its output will be connected with to input of ADC IC P/N : PCM1807PWR (6 Nos) in a time. However, 2 or 3 ADC ICs on;y will be in active. Will INA1620 Drive the PCM1807PWR (3 Nos) in a time ?

Will the Reference schematic in Figure 55 in page 24 work to fulfill my above requirement.?

  • 0
    Intellectual 360 points

    Hi,

    Pls ignore my previews query.

     

    I have designed a circuit using INA1620 and PCM1807PWR and explained below How I have designed.

    Aim Of Design:

    ===========

    Audio Out from PC/Laptop have to be driven the six ADC circuit in a time .

    Design description:

    ==============

    I thought Audio Output from PC/Laptop may not have sufficient strength to driver six ADC IC (P/N PCM1807PWR ) in a time. Hence, I used a Audio Buffer IC (i.e,. INA1620 IC is used in voltage follower configuration) in between Audio input from PC and individual ADC IC's inputs.

    I have attached my schematics and block diagram. Pls review and let me know that any correction is needed? Will the circuit work with no issue?

    VPX Test Jig - Interface Board.pdf

  • 0
    TI__Genius 10850 points

    Hi Mani,

    Thank you for your post. I will help you look into this.

    -Tamara