Description
The CS5451 is a highly integrated Delta-Sigma (∆Σ)An alog-to-Digital Converter (ADC) developed for the Power
Measurement Industry. The CS5451 combines six ∆Σ ADCs, decimation filters, and a serial interface on a single chip. The CS5451 interfaces directly to a current transformer or shunt to measure current, and resistive divider or transformer to measure voltage. The product features a serial interface for communication with a micro-controller or DSP. The product is initialized and fully functional upon reset, and includes a Voltage Reference.
FEATUREs
Synchronous Sampling
On-chip 1.2 V Reference (25 ppm/°C typ)
Power Supply Configurations:
–VA+ = +3 V; VA- = -2 V; VD+ = +3 V
–Supply tolerances ±10%
Power Consumption
–20 mW Typical at VD+ = +3 V
Simple Four-wire Serial Interface
Charge Pump Driver output generates negative power supply.
Ground-Referenced Bipolar Inputs