Si8941 Overview
The Si8941/46/47 are galvanically isolated delta-sigma modulators which output a digital signal proportional to the voltage level at the input. The low-voltage differential input is ideal for measuring voltage across a current shunt resistor or for any place where a sensor must be isolated from the control system. Low noise, low error, and high precision ensure an accurate measurement of system current.
Si8941 Key Features
- Low voltage differential input
- ±62.5 mV and ±250 mV options
- Modulator clock options
- External clock up to 25 MHz (Si8941)
- 10 MHz internal clock (Si8946)
- 20 MHz internal clock (Si8947)
- Typical input offset: ±50 µV
- Typical gain error: ±0.05%
- Excellent drift specifications
- ±0.5 µV/°C typical offset drift