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REF5020: -Voltage adjustment in TRIM pin (-10mV)

Vairavan P
Prodigy 170 points
Part Number: REF5020
Other Parts Discussed in Thread: TINA-TI

Dear Sir/Madam,

I would like to use REF5020IDR IC for one of my application.I need to adjust the output voltage as 2.048+/-5mV.

So what is the formula to calculate the output voltage for the below circuit?

Please help me to findout the output voltage.

  • 0
    TI__Mastermind 19370 points

    Hi Vairavan,

    Is there a relationship between this LT op amp circuit and the REF5020?

  • 0 in reply to Marcoo Z
    Prodigy 170 points

    Good morning macroo.

    There is no relationship bw LT opamp and REF5020. Just for drawing purpose LT spice used.nothing more than that.

    I  wants to know ,how to calculate the output voltage for the below circuit.

    Please do the needful.

    Regards,

    Vairavan P

  • 0 in reply to Vairavan P
    TI__Mastermind 19370 points

    Hi Vairavan,

    I would suggest to use TINA-TI to solve the op amp equation or else  look into Howland current source for something similar..

    I cannot help you with manually solving it. I also cannot provide the values of R1 and R2 which are missing in the schematic of the REF50. The schematic is also a simplified view of the output circuit. The TRIM pin was meant to be manually tuned using a pot resistor due to large variances in internal resistances.