PDF CS5463 Data sheet ( Hoja de datos )

Número de pieza	CS5463
Descripción	Single Phase / Bi-directional Power/Energy IC
Fabricantes	Cirrus Logic
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CS5463 Single Phase, Bi-directional Power/Energy IC Features  Energy Data Linearity: ±0.1% of Reading over 1000:1 Dynamic Range  On-chip Functions: - Instantaneous Voltage, Current, and Power - IRMS and VRMS, Apparent, Reactive, and Active (Real) Power - Active Fundamental and Harmonic Power - Reactive Fundamental, Power Factor, and Line Frequency - Energy-to-pulse Conversion - System Calibrations and Phase Compensation - Temperature Sensor  Meets accuracy spec for IEC, ANSI, 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 Three-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 Description The CS5463 is an integrated power measure- ment device which combines two  analog-to-digital converters, power calculation engine, energy-to-frequency converter, and a serial interface on a single chip. It is designed to accurately measure instantaneous current and voltage, and calculate VRMS, IRMS, instanta- neous power, apparent power, active power, and reactive power for single-phase, 2- or 3-wire power metering applications. The CS5463 is optimized to interface to shunt re- sistors or current transformers for current measurement, and to resistive dividers or poten- tial transformers for voltage measurement. The CS5463 features a bi-directional serial inter- face for communication with a processor and a programmable energy-to-pulse output function. Additional features include on-chip functionality to facilitate system-level calibration, temperature sensor, voltage sag detection, and phase compensation. ORDERING INFORMATION: See Page 45. VA+ RESET VD+ IIN+ PGA IIN- 4th Order  Modulator Digital Filter HPF Option VREFIN x1 Temperature Sensor VIN+ VIN- x10 2nd Order  Modulator Digital Filter HPF Option VREFOUT Voltage Reference Power Monitor System Clock /K Clock Generator Power Calculation Engine Serial Interface E-to-F MODE CS SDI SDO SCLK INT E1 E2 E3 Calibration AGND PFMON XIN XOUT CPUCLK DGND http://www.cirrus.com Copyright  Cirrus Logic, Inc. 2011 (All Rights Reserved) APR ‘11 DS678F3 1 page CS5463 1. OVERVIEW The CS5463 is a CMOS monolithic power measurement device with a computation engine and an ener- gy-to-frequency pulse output. The CS5463 combines a programmable gain amplifier, two  Ana- log-to-Digital Converters (ADCs), system calibration, and a computation engine on a single chip. The CS5463 is designed for power measurement applications and is optimized to interface to a current sense resistor or transformer for current measurement, and to a resistive divider or potential transformer for voltage measurement. The current channel provides programmable gains to accommodate various in- put levels from a multitude of sensing elements. With single +5 V supply on VA+/AGND, both of the CS5463’s input channels can accommodate common mode plus signal levels between (AGND - 0.25 V) and VA+. The CS5463 also is equipped with a computation engine that calculates instantaneous power, IRMS, VRMS, apparent power, active (real) power, reactive power, harmonic active power, active and reactive fundamental power, and power factor. The CS5463 additional features include line frequency, current and voltage sag detection, zero-cross detection, positive-only accumulation mode, and three programmable pulse output pins. To facilitate communication to a microprocessor, the CS5463 includes a simple three-wire serial interface which is SPI™ and Microwire™ compatible. The CS5463 provides three out- puts for energy registration. E1, E2, and E3 are designed to interface to a microprocessor. DS678F3 5 5 Page CS5463 SWITCHING CHARACTERISTICS • Min / Max characteristics and specifications are guaranteed over all Recommended Operating Conditions. • Typical characteristics and specifications are measured at nominal supply voltages and TA = 25 °C. • VA+ = 5 V ±5% VD+ = 3.3 V ±5% or 5 V ±5%; AGND = DGND = 0 V. All voltages with respect to 0 V. • Logic Levels: Logic 0 = 0 V, Logic 1 = VD+. Parameter Symbol Min Typ Max Unit Rise Times (Note 17) Any Digital Input Except SCLK SCLK trise - - - 1.0 µs - 100 µs Any Digital Output - 50 - ns Fall Times (Note 17) Any Digital Input Except SCLK SCLK Any Digital Output tfall - - 1.0 µs - - 100 µs - 50 - ns Start-up Oscillator Start-up Time XTAL = 4.096 MHz (Note 18) tost - 60 - ms Serial Port Timing Serial Clock Frequency SCLK - - 2 MHz Serial Clock Pulse Width High Pulse Width Low t1 t2 200 - 200 - - ns - ns SDI Timing CS Falling to SCLK Rising t3 50 - - ns Data Set-up Time Prior to SCLK Rising t4 50 - - ns Data Hold Time After SCLK Rising t5 100 - - ns SDO Timing CS Falling to SDI Driving t6 - 20 50 ns SCLK Falling to New Data Bit (hold time) t7 - 20 50 ns CS Rising to SDO Hi-Z t8 - 20 50 ns Auto-Boot Timing Serial Clock Pulse Width Low Pulse Width High t9 t10 8 MCLK 8 MCLK MODE setup time to RESET Rising t11 50 ns RESET rising to CS falling t12 48 MCLK CS falling to SCLK rising t13 100 8 MCLK SCLK falling to CS rising t14 16 MCLK CS rising to driving MODE low (to end auto-boot sequence) t15 50 ns SDO guaranteed setup time to SCLK rising t16 100 Notes: 17. Specified using 10% and 90% points on waveform of interest. Output loaded with 50 pF. ns 18. Oscillator start-up time varies with crystal parameters. This specification does not apply when using an external clock source. DS678F3 11 11 Page

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