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  • ADS8861: Multiple ADS8861s with REF60xx

    Resolved
    Part Number: ADS8861 Other Parts Discussed in Thread: OPA625 Hello, When using 10 ADS8861s on the same board with REF60xx, can one REF60xx be shared with all 10 ADS8861s? Or each ADS8861 requires each separated REF60xx? Regards, Oba
    • Resolved
    • Answered

  • RE: ADS8900B: Single-ended bipolar to differential unipolar conversion

    Resolved
    Hi Erik, You can use this method, but the bandwidth of the amplifier must be high to support the fast settling times for the input sampling capacitor. For the ADS8900B converting at 1Msps, you will need an input amplifier bandwidth close to 22MHz, which…
    • Answered

  • ADS8900BEVM-PDK: Unipolar Reference Selection is noisy when inputs are grounded

    Resolved
    Part Number: ADS8900BEVM-PDK Other Parts Discussed in Thread: ADS8900B , THS4551 , OPA625 Hi, I have the EVK up and running. It looks like its setup with + and - inputs grounded and the common mode reference set to 0V. I see a nice and low noise histogram…
    • Resolved

  • RE: ADS8920BEVM-PDK: Building a system for ultrasonic measurement using ultrasonic signals

    Hi Keith, Thanks for your answer. I will check with hydrophone manufacturer about the output voltage and get back to you. The built-in preamp is BII- 1092 and it has 30 kHz highpass filter. - : https://www.benthowave.com/products/Specs/BII-1090Datasheet…
    • Answered

  • ADS1256: Vref circuit for ADS1256

    Resolved
    Part Number: ADS1256 Other Parts Discussed in Thread: REF5025 , OPA388 , OPA625 , OPA350 , ADS1255 , ADS1259 , PGA280 , ADS9110 , ADS8881 , ADS1260 , REF6125 , OPA320 , ADS127L01 Hello, I have few quiestions related to ADS1256 Vref driving circuit. 1. What are the…
    • Resolved

  • RE: ADS9110: PGIA for ADS9110

    Hello, The best TI device to drive the ADS91xx is either the THS4551 (can be configured as a 'funnel' amp with appropriate resistors) or the OPA625. The closest device that we have for the PGA is the PGA281, but this part is focused on lower…
    • Answered

  • RE: TINA/Spice/ADS8900B: How to configure the front end with gain?

    Resolved
    Hello, We are looking into this and will get back to you soon. In the mean time, it looks like you might be hitting an output swing limitation from the negative rail. The OPA625 has a 110mV limit from the rail. Would you confirm what voltage the OPA625…

  • OPA735: The voltage ripple of the REF5025 and OPA735 for ADS1282

    TI Thinks Resolved
    Part Number: OPA735 Other Parts Discussed in Thread: REF5025 , ADS1282 , LM27762 , ADS1261EVM , ADS1278 , ADS1281 , REF5050 , OPA725 , OPA837 , TIDA-01055 , OPA625 Hello sir, Thanks for your answer before. But now， I meeting a new problem in my design. Please have…

  • ADS8902B: LDO output voltage issue

    TI Thinks Resolved
    Part Number: ADS8902B Other Parts Discussed in Thread: PGA280 , OPA320 , OPA625 Hi... I have some problem with ADS8902B. When I change the sampling frequency(through CONVST pin) from 10kHz to 100kHz/200kHz/250kHz, LDO output(DECAP pin) voltage is dropped…

  • OPA4350: TMS320F28379D VREF-HI

    Part Number: OPA4350 Other Parts Discussed in Thread: OPA625 , TMS320F28379D , OPA378 , OPA320 , OPA350 , TINA-TI On the F2837x controlCARD devboard, the OPA4350 is used to drive the ADC VREFHI. Actually on my board I used the OPA378 and the OPA625. Could…

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