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  • PCM1802: Rise and fall times

    Part Number: PCM1802 Hi team, I know that the rise and fall times are specified to be less than 10ns, but I would like to use a clock that exceeds 10ns to prevent EMI. Would this be possible under certain conditions? For example, by using a BCK period of…

  • PCM1802: Sharp noise spikes on otherwise-clean data output

    Part Number: PCM1802 Other Parts Discussed in Thread: PCM1808 , To whom it concerns, We're currently developing the second revision of a product which uses four PCM1802s to sample eight analog inputs. One acts as the master and provides bit and word…
    • Answered

  • PCM1802: About the duty ratio condition of the system clock

    Resolved
    Part Number: PCM1802 Hi team, There is no duty ratio specified in the system clock, but as long as the minimum pulse width of 7ns is observed, is there any problem with any duty ratio? If so, what is the acceptable duty ratio range? Also, is it correct…
    • Resolved

  • PCM1802: Noisy VREF1.

    TI Thinks Resolved
    Part Number: PCM1802 The lack of PSR data for this device is a hindrance. The datasheet just says that VCC should be clean. What does that mean? A battery? I have a clean VREF2 (-106dBu) but my VREF1 (midrail) is much noisier (-85dBu) for some reason…
    • Answered

  • PCM1802: PCM1802 EVM schematic and layout

    Resolved
    Part Number: PCM1802 Hello sir, May I request for PCM1802 EVM schematic and layout? THanks for your help!
    • Resolved
    • Answered

  • PCM1802: Replacing PCM1803A with PCM1802

    Resolved
    Part Number: PCM1802 Other Parts Discussed in Thread: PCM1803A , Hi, Are there any concerns if replacing PCM1803A with PCM1802? Is my understanding correct that FSYNC pin should be pulled-up to VDD with the slave mode(FMT1=0, FMT0=0, MODE1=0 and MODE0=0…
    • Resolved

  • PCM1802: Effect of VCC degradation

    TI Thinks Resolved
    Part Number: PCM1802 Hello Support team, We understand VCC for PCM1802 is required to be over 4.5V as mentioned in the page6 of its datasheet: But in our design, depending on noise, temperature and other conditions, it turned out that VCC may momentarily…

  • PCM1802: System clock timing

    Part Number: PCM1802 Hi Team Would you advise that 1. Does system clock timing spec of min 7ns apply for all frequency (8.192 to 49.152MHz) described table1 on Page15 in datasheet? 2. Do you have SCK AC spec rather than below? Thanks Best regards, Sh…
    • Answered

  • PCM1802: Modify 0dBFS input sensitivity

    Resolved
    Part Number: PCM1802 Hello, Our customer is trying to replace A-company ADC with minimum modification of existing EE. PCM1802 0dBFS input sensibility is 3.0Vpp at VCC=5V but previous ADC has 2.1Vpp. On the specification input sensitivity is varied by…
    • Resolved

  • PCM1802: Datasheet questions

    TI Thinks Resolved
    Part Number: PCM1802 Hi Team, Would you advise my customer's ABS voltage question about supply voltage difference(Vcc-Vdd)? Query: Is this "difference" value acceptable at -3.3V? My customer uses under below condition, ・ VCC = 5.0V or 4.…

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