Cirrus Logic, Inc. Single-Phase, Bi-Directional Power/Energy IC CS5461A


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Single-Phase, Bi-Directional Power/Energy IC - CS5461A - Cirrus Logic, Inc.
Austin, TX, USA
Single-Phase, Bi-Directional Power/Energy IC CS5461A
The CS5461A enables digital power meter manufacturers to provide highly accurate, cost-effective solutions for measuring power usage. This IC is an integrated power-measurement device that combines two Delta-Sigma analog/digital converters (ADCs), high-speed power calculation functions and a serial interface on a single chip. Additional features include AC and DC calibration and phase compensation. Designed for residential single-phase or industrial three phase power-meter applications, the IC accurately measures instantaneous current and voltage while calculating instantaneous power, real power, apparent power, IRMS and VRMS. The CS5461A is easy to design in as a pin-compatible upgrade to the popular Cirrus Logic CS5460A. It retains all the functionality of its predecessor, while also providing an on-chip temperature sensor which can be used to lower the temperature coefficient, allowing for higher accuracy over temperature. For communication with a microcontroller, the IC features a bi-directional serial interface, which is initialized and fully functional upon reset. The CS5461A can interface to a low-cost shunt resistor or transformer for current measurement and to a resistive divider or potential transformer for voltage measurement. The CS5461A delivers accurate power usage measurements and is ideal for electronic power meter applications. Features Energy data linearity: +0.1% of reading over 1000:1 dynamic range On-chip Functions: Instantaneous voltage, current and power IRMS and VRMS, Average Real and Apparent Power Energy-to-pulse conversion Meets accuracy spec for IEC, ANSI, JIS Low-power consumption Adjustable input range on current channel GND-referenced signals with single supply On-chip temperature sensor On-chip 2.5 V reference (typ 25 ppm/°C) AC/DC system calibrations Phase compensation Simple 3-wire digital serial interface Power-supply monitor Programmable energy-to-pulse output function Configurable pulse outputs for stepper motor or mechanical counter Power supply configurations: VA+ = +5 V; AGND = 0 V; VD+ = +3.3 V to +5 V Package: 24-pin SSOP; lead-free assembly
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Technical Specifications

  Cirrus Logic, Inc.
Product Category Sensor Chips
Product Number CS5461A
Product Name Single-Phase, Bi-Directional Power/Energy IC
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