I'm having difficulties understanding the input voltage range for the MCP3425. I'm needing to measure a 0->3.3v range.
From the datasheet (description at top):
The on-board precision 2.048V reference voltage enables an input range of ±2.048V differentially (Δ voltage = 4.096V)
But also from the datasheet:
The differential input voltage should not exceed an absolute of (VREF/PGA) for accurate measurement, where VREF is the internal reference voltage (2.048V) and PGA is the PGA gain setting. The converter output code will saturate if the input range exceeds (VREF/PGA).
Where PGA is the gain (which would = 1).
I feel like it should be capable of measuring the voltage correctly, or would a voltage divider be necessary? (As the output is calibrated, the accuracy of the voltage divider wouldn't be important but the stability would be, so this could be an option).
Thanks