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THS7001: In THS7001 what i need to set SHDN pin when i want use both Pre-amplifier and PGA of THS7001

Rahul Surawase48
Expert 2395 points
Part Number: THS7001

Hello TI,

I am using THS7001 for single chip solution in my application, can i use pre- amplifier and PGA at a time ...?

what i need to set SHDN pin status when want to use BOTH PGA and Pre-Amplifier part ....?

thanks for your valuable response....! 

  • 0
    Expert 2395 points

    I follow the below schematic 

  • 0 in reply to Rahul Surawase48
    Guru 140200 points
    Hi Rahul,

    see section "Shutdown Control" on page 23 and section "Shutdown Electrical Characteristics" on page 6 of datasheet.

    To turn both the Preamp and the PGA of THS7001 on, connect the SHDN pin to the GND pin.

    Kai
  • 0 in reply to kai klaas69
    Expert 2395 points

    Hello Kai,

    We also try to simulate on mutisim but we not getting any proper out from this, share some output PIC 

    there is SHDN pin connected to GND OUTPUT  

    SHDN pin connected to +5v 

    THS7001 Circuit Diagram  


    can provide THS7001 Circuit Schematic for Reference 

    Thanks, 
    Rahul

  • 0 in reply to Rahul Surawase48
    Guru 140200 points

    Hi Rahul,

    I wrote:

    "To turn both the Preamp and the PGA of THS7001 on, connect the SHDN pin to the GND pin."

    Why haven't you connected the SHDN pin to GND?

    Also, the datasheet of THS7001 recommends a bipolar supply voltage, not a single supply voltage:

    Kai

  • 0 in reply to kai klaas69
    Expert 2395 points
    Hello Kai,
    I Check to Connect SHDN pin to GND but there is same result which i get from not connected SHDN pin
    There is need to +Ve and -Ve for THS7001, can i not use Single +5v supply and GND to it ...?
    e2e.ti.com/.../2671468

    Thanks ,
    Rahul
  • 0 in reply to Rahul Surawase48
    Guru 140200 points

    Hi Rahul,

    if I start a new project, then I use the chip exactly in the way as intended by the manufacturer. So, try to make work the standard circuit first before making any experiments. Then, when everything is fine and understood (and only then !), you can make your modifications. But if you start the project with lots of modifications from the begin on, you will never make the chip run.

    So, start with the standard circuit. Then make a modificiation, but only one at a time. Otherwise it will become a never ending story...

    Divide and conquer! This is a very clever phrase. Think about it...

    Kai

  • 0 in reply to kai klaas69
    Expert 2395 points
    Hey Kai,

    I Understood what you want to say, Thanks for your valuable response and time

    Yes, I need to check first standard circuit and then i can modify as per requirement
    but there is another phase when you Modify existing circuit with new chip and there requirement (less modification and match the requirement) because of that I am looking for suitable chip to my exiting system

    Thank's and regards,
    Rahul Surawase