Datasheet
CS5460A Datasheet
DS487F6 | 808 KBNovember 2021
CS5460A Overview
The CS5460A is a highly integrated Delta-Sigma analog-to-digital converter (ADC) that combines two Delta-Sigma ADCs, high-speed power calculation functions and a serial interface on a single chip. It is designed to accurately measure and calculate energy, instantaneous power, IRMS and VRMS for single-phase, 2- or 3-wire power metering applications.
The CS5460A interfaces to a low-cost shunt resistor or transformer to measure current and resistive divider or potential transformer to measure voltage. It features a bi-directional serial interface for communication with a microcontroller and a programmable frequency output that is proportional to energy. The CS5460A has on-chip functionality to facilitate AC or DC system-level calibration.
The “Auto-Boot” feature allows the CS5460A to function standalone and to initialize itself on system power-up. In Auto-Boot mode, the CS5460A reads the calibration data and start-up instructions from an external EEPROM. In this mode, the CS5460A can work without the need for a microprocessor for low-cost metering applications.
CIRRUS®
CIRRUS ROCKS®
ENGINEERED TO ROCK®
INNOVATION THAT ROCKS®
Product Features
Energy data linearity: ±0.1% of reading over 1000:1 dynamic range
EOn-chip functions: energy, I * V, IRMS and VRMS, energy-to-pulse conversion
Smart ‘Auto-Boot’ mode from serial EEPROM
AC or DC system calibration
Mechanical counter/stepper motor driver
Meets accuracy spec for IEC, ANSI, JIS
Power consumption < 12 mW
On-chip 2.5 V reference (25 ppm/°C typ.)
Interface optimized for shunt sensor
Phase compensation
Ground-referenced signals with single supply
Simple 3-wire digital serial interface
Watchdog timer
Power-supply monitor
Power supply configurations
Package: 24-pin SSOP; lead-free assembly