Other Parts Discussed in Thread: DRV425-Q1, DRV425
Luke Andraka89's data had 20 mVpp of noise with up to 40 mVpp.
The DRV425-Q1 data sheet says
- Noise is typically 17 nT rms from 0.1 to 10 Hz
- Noise density at 1 kHz is 1.5 nT/sqrt(Hz)
These values don't correlate to the data shown by the original poster.
The RC filter you're advising has a cutoff at ~ 16 kHz.
This raises two questions:
1. Does the DRV425 generate substantial noise beyond 1 kHz?
2. Or was the noise in the original data due to grounding/layout?