Other Parts Discussed in Thread: ADS1131, ADS1231
Tool/software:
Hello,
We are looking for a new ADC to use in some of our applications. Can you help with some options? Spec list is below:
EAU: 10000/year
Sigma-Delta ADC with PGA for measuring strain gauges
- Low cost target: Under $3 @1000
- Single channel, differential input
- Resolution: >= 16 bit
- PGA and RMS noise target: <= 100nV @ 4 SPS (single cycle timing) at max PGA gain (64~128 gain)
- 4 SPS (single cycle timing), but preferably an adjustable SPS rate.
- Internal voltage reference: Not needed. We will use as ratiometric, connecting same GND and 3.3V to strain gauge and ADC.
- Temperature range: -40C to +85C preferred, maintain good accuracy over -20C to +60C.
- Simultaneous 50Hz/60Hz rejection at selected SPS
- Single 3.3V supply operation
- Power draw: <1mA, with low power/shutdown option
- SPI or I2C communication
Thank you.
