Other Parts Discussed in Thread: DAC8830, , TXB0108
Hi TI community,
I'm working on a design that uses the DAC8830 to generate sinusoids in the kilohertz range. The design currently uses an MCP3550 chip from Microchip (datasheet linked here) as a differential ADC, but its conversion time is far too slow to handle these frequencies.
I found the ADS892xB chip, and it seems suitable for this frequency range with good resolution. The MCP3550 had a 3-wire SPI interface, but I see that the ADS8920b has several serial digital outs as well as a serial digital in. Can this device still be operated with 3-wires? There is also a "CONVST" pin which I'm not sure what to do with for this application.
Also could the ADS8920b share a serial clock with the DAC8830? As long as we can control the DAC's sample rate, the ADC just has to be fast enough to sample the generated signal.
Thanks a lot for your time,
Ian