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Home : Cirrus Products : Power Metering : CS5460A![](/images/blank.gif) |
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Single Phase, Bi-Directional, Power/Energy SOC
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The CS5460A is a highly integrated, Delta-Sigma analog-to-digital converter (ADC) which combines two Delta-Sigma A/D converters, 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. The CS5460A features a bi-directional serial interface for communication with a micro-controller and a programmable frequency output that is proportional to energy. 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 micro-processor for low-cost metering applications.
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Product Features
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- Energy data linearity: ±0.1% of reading over 1000:1 dynamic range
- On-chip functions: energy, I * V, RMS, 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 687/1036, JIS
- Power consumption <12 mW
- Interface optimized for shunt sensor
- Phase compensation
- Ground-referenced signals with single supply
- Simple three-wire digital serial interface
- Watch dog timer
- Power supply monitor
- Power supply configurations
- VA+ = 5V; VA- = 0V; VD+ = 3 to 5V
- VA+ = 2.5V; VA- = -2.5V; VD+ = 3V
- On-chip 2.5V reference (MAX 60 ppm/°C drift)
- Package: 24L-pin SSOP
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