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THS10064: ADC roadmap for 5V, 8bit, parallel output, etc

Satoshi
Guru 19595 points
Part Number: THS10064
Other Parts Discussed in Thread: TLV571

If there roadmap for ADC matching below specification, please let me know.

--------------------------------------

・5Vcc and near 5V input range

・8bit

・Interface: Parallel output

・Internal reference

・Sample rate: 1Msps

・Package: small as possible and read type

--------------------------------------

I didn't find match IC and competitor have not, too. (Near device is Maxim: MAX154, but external reference)

Second question, if there no matched roadmap IC's, I will promote THS10064(10bit) and explain unused D8 and D9 pin, is this idea correct?

If correct, should unused D8 and D9 connect GND? 

 

Best regards,

Satoshi

  • 0
    TI__Guru**** 175201 points
    Hi Satoshi!

    I'm not sure if there are any parallel output devices on the road map, we'll look into that and get back to you soon. Regarding the THS10064 though, this is a four channel device which can accommodate differential or single ended signals, you just need to consider the input common mode voltage range of the part (ideally your input signal is centered at 2.5V). You would also want to use the high order bits - D9..D2 and then you would leave D1..D0 out of the 8-bit data bus. You don't want to ground them though, as these would be active digital signals. You could terminate them to GND with pull downs to minimize EMI concerns.
  • 0 in reply to Tom Hendrick
    TI__Mastermind 22385 points
    Hi Satoshi-san,

    as Tom mentioned, there is no such device on our roadmap. I don't think we or anybody else would develop an 8-bit, 1MSPS ADC with parallel interface anymore. From the devices you found you can see that those are quite old.
    Also having a small package and parallel interface are kind of contradicting requirements.

    The THS10064 will actually not work for you in case you want to measure single-ended signals that range from 0V to near 5V.

    Have you considered TLV571 or do you need 4 input channels?
    The TLV571 does not have an internal reference, but with an 8-bit ADC it should be sufficient to use a 'clean' 5V supply as the reference.
    The TLV571 can measure single-ended signals that range from 0V to 5V in that case.

    Regards,