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  • INA821: INA821 works as a high-pass filter

    Part Number: INA821 Other Parts Discussed in Thread: INA1650 Tool/software: Dear Ti Engineers, I am using INA821 as an amplifier, what the input impedance of each differential input? The input frequency is 0-200kHz, but the output frequency which I want…
    • Answered

  • INA821: Input Impedance

    Resolved
    Part Number: INA821 Tool/software: Hi, How is common mode respectively differential mode input impedance defined? Is it possible to draw an equivalent schematic? Also in the datasheet are the given values MIN, TYP or MAX? Best regards, /Takeshi
    • Resolved

  • INA821: Input common mode voltage vs offset voltage

    TI Thinks Resolved
    Part Number: INA821 Tool/software: Hi I am using INA821 for accurate voltage measurement, I am calibrating INA with two point measurement at zero common mode voltage but my real application is with 15V common mode voltage. As offset voltage varies with…
    • Answered

  • INA821: offset voltage, offset current, bias current evaluation between INA121

    Resolved
    Part Number: INA821 Other Parts Discussed in Thread: INA121 Tool/software: Hi, Our old product is using INA121. Now, I wish to use INA821 to replace it. but I found its offset voltage has one more output offset voltage and larger offset current and bias…
    • Resolved

  • INA821: Large DC offset when REF < 1.53 V

    Part Number: INA821 Other Parts Discussed in Thread: OPA835 Hello, we have the following circuit: The input signal is at Vcm = 2.5 V, Vdiff up to 12 mV, frequency ranging from 1 kHz to 1 MHz. We want the output signal to swing around 1.0 V. However,…
    • Answered

  • INA821: Drop in alternative for INA821

    Resolved
    Part Number: INA821 Other Parts Discussed in Thread: OPA187 Hello, we have recently developed a prototype board that include an INA821 used as DC amplifier with gain 500, We misread the datasheet and we thought that the Vcm was +/- 2V around the supply…
    • Resolved
    • Answered

  • INA188: Alternatives INA821/INA818

    Resolved
    Part Number: INA188 Other Parts Discussed in Thread: INA821 , INA818 , Hi all, I'm trying to come up with a suitable alternative for the current sense chain of a source measurement unit. I originally selected the INA818 and INA821 as suitable technical…
    • Resolved
    • Answered

  • INA821: Need a definitive answer on whether the maximum gain is 1000 or 10,000

    Resolved
    Part Number: INA821 Hi, I have seen the thread titled "INA821: Maximum Gain achievable: 1000 or 10,000?" and read the response from Tamara Alani saying "The paragraph on the first page is incorrect and I have let the team know to update this." However…
    • Resolved
    • Answered

  • INA821: characteristics of phase vs frequency

    Resolved
    Part Number: INA821 Other Parts Discussed in Thread: INA849 , , THP210 Hello. Could you submit the characteristics of phase vs frequency? We observed the phase delay of 45 degree in 800kHz input signal. We want to make sure whethert it is because of less…
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    • Answered

  • INA821: How to choose an LDO for the INA821 with a single supply

    Resolved
    Part Number: INA821 Other Parts Discussed in Thread: TPS7A47-Q1 , ADS1256 , REF5050 I have an INA821 instrumentation amplifier, he said his output noise at 0.1-10Hz is 2.5uV (assuming the input signal noise is lower than 2.5uV), I use a single supply of…
    • Resolved

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