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ADS1672 with SPI Interface

Harish Kasiviswanathan
Prodigy 10 points
Other Parts Discussed in Thread: ADS1672

Hi,

We are planning to connect ADS1672 to Freescale iMX25 processor via standard SPI Interface. We want to sample at maximum rate which is 625 KSPS. I would like to know if the following design will work.

Provide CLK = 20 Mhz. Configure for Low-latency Date Rates with Fast-Response Configuration (last entry in Table 6 Page 17). If I set the START=1 (always convert), will DRDY signal toggle exactly at 625 KSPS? Can we reliably then use the DRDY to read data via SPI?

Thanks,
Harish

 

 

  • 0
    TI__Guru**** 180961 points

    Hi Harish,

    The ADS1672 will work with an serial peripheral interface (SPI) - the DRDY will appear at 625kSPS and there is no reason that I can think of that you would not be able to use the DRDY in a TMS320 series processor from Texas Instruments to read the data.  I am not familiar with the processor you intend to use, so we can't help you there.  If you would like to discuss TI processor options, I'd be happy to try and provide you a complete solution.