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OPA376-Q1: Additional Information needed

Renan Santos Adriano
Mastermind 19910 points
Part Number: OPA376-Q1

Hello Team,

My customer wanted to know the closed-loop output impedance (at G=+1) of OPA376-Q1. In the datasheet, it states that open-loop output impedance is typically 150 ohms.

Can you also confirm the max input voltage offset of this device is 25uV for all temperature ranges? As I checked the datasheet this is only for 25 degrees Celsius, do we have the data for all temperature ranges?  

Thanks in advance. 

Regards,

Renan

  • 0
    TI__Guru 57801 points

    Hi Renan,

    Please check the following thread,  which the question has been answered. 

    https://e2e.ti.com/support/amplifiers/f/14/p/925628/3420207?tisearch=e2e-sitesearch&keymatch=output%25252520impedance%25252520simulation#3420207

    Can you also confirm the max input voltage offset of this device is 25uV for all temperature ranges? As I checked the datasheet this is only for 25 degrees Celsius, do we have the data for all temperature ranges?  

    Yes, Vos_max is specified 25uV at room temperature. If you are talking about 70C operating temperature, the worst case at Ta = 70C will be 25uV + 1uV/C * (70-25C) =70 uV (if -40C < Ta < 85C). 

    If  you are talking about -40C to 125C in operating range, the worst case (maximum) at  Ta = 125C will be Vos = 25uV + 2uV/C*(125-25C) = 127uV. 

    0.32uV/C is a typical dVos/dT value from the datasheet, if Ta is operating from -40C to +125C. 

    If you have additional questions, please let us know. 

     

    Best,

    Raymond