3-Channel, Single Phase Power/Energy IC
The CS5464 is an integrated power measurement device which combines three Delta-Sigma analog/digital converters (ADCs), power calculation engine, energy-to-frequency converter and a serial interface into a single integrated circuit. It is designed to accurately measure instantaneous current and voltage and calculates VRMS, IRMS, instantaneous power and average power (active/reactive/apparent) for high-performance power measurement applications.The CS5464 is optimized to interface to shunt resistors or current transformers for current measurement, and to resistive dividers or potential transformers for voltage measurement.The CS5464 features a bi-directional serial interface for communication with a processor and a programmable energy-to-pulse output function. It also has a tamper detection scheme that uses the larger of the active powers to register energy. Additional features include system-level calibration, temperature sensor, voltage sag, current fault detection and phase compensation.
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Technology
Features
- Energy data linearity: ±0.1% of reading over 1000:1 dynamic range
- On-chip Functions:
- Instantaneous voltage, current and power IRMS and VRMS, active, reactive and apparent power
- Current fault and voltage sag detect
- System calibrations/phase compensation
- Temperature sensor
- Energy-to-pulse conversion
- Positive-only accumulation mode
- Meets accuracy spec for IEC, ANSI and JIS
- Low power consumption
- Current input optimized for sense resistor
- GND-referenced signals with single supply
- On-chip 2.5 V reference (25 ppm/°C typ)
- Power-supply monitor
- Simple 3-wire digital serial interface
- “Auto-boot” mode from serial E²PROM
- Power supply configurations
- VA+ = +5 V; AGND = 0 V; VD+ = 3.3 V to 5 V
- Package: 28-pin SSOP; lead-free assembly
Parametric Specifications
| Not Recommended for New Designs |
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