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Si8947 Datasheet Isolated Delta-sigma Modulator

Manufacturer: Skyworks Solutions

Overview: DATA SHEET Si8941/Si8946/Si8947 Isolated Delta-Sigma Modulator for Current Shunt Measurement Applications • Industrial, HEV and renewable energy inverters • AC, brushless, and DC motor controls and drives • Variable.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

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.

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 - ±4 ppm/°C typical gain drift.
  • Typical 14-bit (ENOB) precision.
  • High common-mode transient immunity: 75 kV/µs.

More Datasheets from Skyworks Solutions

Part Number Description
Si8941 Isolated Delta-Sigma Modulator
Si8946 Isolated Delta-Sigma Modulator
Si8900 ISOLATED MONITORING ADC
Si8901 ISOLATED MONITORING ADC
Si8902 ISOLATED MONITORING ADC
Si8921 Isolated Amplifiers
Si8922 Isolated Amplifiers
Si8935 Delta-Sigma Modulator
Si8936 Delta-Sigma Modulator
Si8937 Delta-Sigma Modulator

Si8947 Distributor