Cirrus Logic CS5451A
The CS5451A is a highly integrated delta-sigma ( analog-to-digital converter (ADC) developed for the power measurement industry. The CS5451A combines six ADCs, decimation filters, and a serial interface on a single chip. The CS5451A interfaces directly to a current transformer or shunt to measure current, and to a resistive divider or transformer to measure voltage.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 - 23 mW Typical at VD+ = +3 V
● Simple Four-wire Serial Interface
● Charge pump driver output generates negative power supply.
● Ground-referenced Bipolar Inputs
DESCRIPTION
The CS5451A is a highly integrated delta-sigma ( analog-to-digital converter (ADC) developed for the power measurement industry. The CS5451A combines six ADCs, decimation filters, and a serial interface on a single chip. The product features a serial interface for communication with a microcontroller or DSP. The product is initialized and fully functional upon reset, and includes a voltage reference. ORDERING INFORMATION: See page 13. GAIN VA+ RESET IIN1+ IIN1- VIN1+ VIN1- x1, 20 x1 4th Order Modulator 4th Order Modulator Decimation Filter Decimation Filter IIN2+ x1, 20 4th Order Modulator Decimation Filter IIN2- V...