• RE: Design LTC2508-32 so as to perform precise voltage measurements

    Hi Shane,

    Rather than trying to shift the ADC supply voltages which may not be entirely successful, why not use a fully differential amplifier such as the ADA4945 to shift the input voltage of your signal into the range compatible with the ADC.

    (2) Never…

  • RE: ADAU196XAZ test, i can't get a digital input 24bit signal by the sigmastudio or the ARWB

    Hi Dave

    Thanks for your help. 

    I bought a amplifier in ADI, which is ADA4945-1CP-EBZ, this amplifier can provide a common mode voltage with good quality.

    sincerely

    Shangzheng

  • RE: Clamp Feature ADA4945

    Hi Thomas,

    +VClamp and -Vclamp can be driven by either a voltage divider network or by an external power supply. However, when you chose to drive via voltage divider network always consider it's internal resistance for accurate voltage clamping. In the…

  • RE: ADC Driver Low noise for AD7380

    Hi Jocs,

    Here is a list of ADI fully differential amplifiers sorted for low distortion (< -100dB), and low noise (<3nV) as a first pass at zeroing in on suitable drivers for the AD7380 (16 bit, SAR, diff input ADC):

    ADA4945-1
    LTC6363
    LTC6363-0.5…

  • Is a sign of an offset voltage drift +/- ?

    Hi, everyone.

    I have a simple question.

    I think an offset voltage drift of OP-amps has positive or negative tenpareture coefficiency, but that is not written in data sheets such as OP1117, AD829, and AD8099.

    On the other hand, a sign of +/- is written i…

  • Is a sign of an offset voltage drift +/- ?

    Hi, everyone.

    I have a simple question.

    I think an offset voltage drift of OP-amps has positive or negative tenpareture coefficiency, but that is not written in data sheets such as OP1117, AD829, and AD8099.

    On the other hand, a sign of +/- is written i…

  • ADA4945-1 clamp feature but with higher bandwith and improved 2nd and 3rd harmonic destortion

    Dear Forum members.

    Could you please comment on the following?

    I really like the output voltage clamp feature o the new ADA4945-1 ADC driver.

    Is there however another device with  higher bandwidth option planned for future release?

    Especial one with improved…

  • LTC2380-24 Figure11b condition

    Hi

    In LTC2380-24 datasheet, 

    Which setting is used in LTC2380? (How ns is acquisition time?)

    With Precision ADC Driver Tool,

    ・ADC Driver is LTC6363(short circuit current is near LTC6362).

    ・fin=2kHz Rext=35.7Ω Cext=6.8nF Sample Rate =2MSPS Vref=5V…

  • RE: Single-ended to differential amplifier at ppm level - Questions on DN1032

    In DN1032, the inverting amplifier U3, acts merely to keep the common mode voltage within the required Vref/2 +/-100mV. As long as it does this, its absolute accuracy is not necessary. The circuit of DN1032 is designed primarily for DC applications. If…

  • RE: How can I input bipolar signal to EVAL-AD7768-4?

    FormerMember
    FormerMember

    Hi,

    The simplest way to do this would be to use a differential amplifier like ADA4945 or ADA4940. These fully differential amplifiers have a pin which can be used to adjust the common mode voltage.

    Or you could also set AVSS to -2.5V and reference all…