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  • RE: ADC128S102: ADC128S102 input impedance

    Hello, Apologies for the late response, as I was out of office on business travel. The ADC128S102 does not have a hi-Z input. Whether or not to add an input buffer depends on the speed you plan to run the device at, the nature of the input signal you…
    • Answered

  • ADC128S102-SEP: Questions about SPI

    Resolved
    Part Number: ADC128S102-SEP Tool/software: Hello, My customer has questions about SPI as follows. Q1: After how much time from power up is SPI interface ready to access? Q2: Should SCLK, CS and DIN pins be pulled up to VD with resisters? Best regards…
    • Resolved
    • Answered

  • ADC128S102: Datasheet does not spec noise directly?

    Resolved
    Part Number: ADC128S102 Tool/software: Hello- I noticed that the ADC128S102 datasheet does not spec noise directly for use by the Analog Engineer's Calculator TUE Calculator. Or if I missed it, could someone point it out?? What I ended up doing…
    • Resolved

  • ADC128S102-SEP: How to fulfill the condition VA > VD during power down

    Part Number: ADC128S102-SEP Tool/software: When looking at figure 8-1 of the ADC128S102-SEP datasheet, I don't see how to fulfill the condition mentioned in section 9.1 Power-Supply Sequence in the same datasheet. When powering down, VD will power…

  • ADC128S102: ADC128S102

    Part Number: ADC128S102 Other Parts Discussed in Thread: TMS320F2808 , Tool/software: Hi, I am using two ADC128S102 A/D converters for sampling 10 analog channels. The two ADC128S102 chips are connected to a TMS320F2808 DSP through the SPI D port. The…
    • Answered

  • ADC128S102: Input Protection Cross Channel Impact?

    Resolved
    Part Number: ADC128S102 Tool/software: The datasheet for the device says it can handle up to VA+0.3V inputs and even higher if current limited to under 10mA. I have two inputs to the ADC, that at worst case tolerance stackup could be as high as 5.35V…
    • Resolved
    • Answered

  • ADC128S102-SEP: Input rise/fall times

    Resolved
    Part Number: ADC128S102-SEP Tool/software: Hi, I would like to know if there are any constraints on the input rise and fall times of the SPI signals (mainly SCLK and DIN). The SCLK frequency in my application is 1MHz Thank you. Best regards.
    • Resolved
    • Answered

  • ADC128S102: Clock Frequency ADC128S102_SMD

    Resolved
    Part Number: ADC128S102 Tool/software: Hello good morning. I have some queries related to the ADC128S102_SMD. We currently use it with our product and we have to make some modifications for a new project. The queries are the following: 1. The datasheet…
    • Resolved

  • ADC128S102: Operate with Tying /CS to GND

    TI Thinks Resolved
    Part Number: ADC128S102 Tool/software: Dear team, We are trying to use ADC128S102. We do not need synchronous feature, so we will use with tying /CS-pin to GND via pulldown resistor. Will it be problem? In the datasheet, there are several words of falling…

  • ADC128S102: ADC128S102 Vs ADC128S102-SEP - Minimum Sampling rate difference

    TI Thinks Resolved
    Part Number: ADC128S102 ADC128S102 - is specified from 500ksps to 1Mbps, whereas ADC128S102-SEP is specified from 50ksps to 1Mbps w.r.to Sampling rate. What is the constraint or Specification difference for using the ADC128S102 IC while using at 50ksps…

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