Other Parts Discussed in Thread: ADS8584S, ADS8588S, ADS1120, ADS1220, ADS1246, PGA280, ADS1146
Dear all,
We are looking into designing a relatively low speed DAS system for sensors measurement.
Our requirements are:
- 2 differential analog inputs (+/-10v max)
- Max 2k sampling rate (we'll be doing a lot of DC measurements too)
- Simultaneous sampling.
- Ideally PGA and sigma delta ADC (16bit)
- Ideally powered from a single supply (USB, +5v).
I noticed that the ADS8584S device is very suitable, as it runs on a single supply (of course, when it's avalaible). However, the SAR ADC and high sampling rate perhaps make it less suitable for low frequency measurement? The other option is to use two PGA280s with ADS1259s, but this would require a seperate bipolar analog power supply, external clock, and increase the board area which is undesirable. Do any of you have any ideas or know of a seperate AFE as implemented in the ADS85xS? Also, perhaps there are better alternatives to implement our application?
Thanks!