Four Channel Energy Measurement IC CS5484/80/90 Market Applications Utility Meters VDDA VDDD RESET IIN1+ 4th Order PGA SSEL HPF Option Digital Filter ΔΣ Modulator IIN1- CS Power Supply Monitoring Smart Appliances UART/SPI Serial Interface IIN2+ 4th Order ΔΣ Modulator PGA IIN2- HPF Option Digital Filter RX/SDI TX/SDO SCLK Home Energy Management VIN1+ 4th Order 10x Emerging Smart Home and Smart Grid Applications HPF Option Digital Filter ΔΣ Modulator VIN1- DO1 Calculation Configurable Digital Outputs VIN2+ 10x VIN2- M U X 4th Order ΔΣ Modulator Temperature Sensor HPF Option Digital Filter System Clock Voltage Reference Clock Generator XIN XOUT CPUCLK DO3 DO4 MODE GNDA DO2 VREF+ VREF- GNDD For manufacturers of utility meters, appliances and smart home energy solutions, Cirrus Logic’s CS5484/80/90 family of analog front end (AFE) energy measurement ICs provide the industry’s highest measurement accuracy and lowest cost, with the flexibility and ease of use to react quickly to rapidly changing market conditions. The CS548/9X family, when combined with an MCU of your choice, offers a clear alternative to system-on-a-chip solutions, whose “one size fits all” approach limits the designers ability to optimize the design for performance and cost requirements. With an energy measurement accuracy of 0.1% over 4,000:1 dynamic range, the CS548/9X family offers superior measurement performance with no user programming required, and ultra-fast calibration. Its multiple interface options, including UART, SPI and four digital outputs, provide flexibility to quickly react to changing market requirements. Plus, each digital output is individually configurable to provide energy pulses, zero crossing, energy direction or interrupt functions on any of the provided pins. Features: Cirrus Logic, Inc. 2901 Via Fortuna Austin, Texas 78746 United States T +1-512-851-4000 F +1-512-851-4977 Toll-Free +1-800-888-5016 Sales Support North America +1 800-625-4084 Asia Pacific +852 2376-0801 Japan +81 (3) 5226-7757 Europe/UK +44 (90) 1628-891-300 www.cirrus.com AASuperior analog performance with ultra low noise level and high SNR AA Energy measurement accuracy of 0.1% over 4000:1 dynamic range AA Current RMS measurement accuracy of 0.1% over 1000:1 dynamic range AA 2, 3 or 4 independent 24-bit, 4th-order Delta Sigma modulators for voltage and current measurement AA Configurable digital outputs for energy pulses, zero crossing or energy direction AA Supports shunt resistor, CT and Rogowski coil current sensors AA On-chip measurements / calculations: AA Active, reactive and apparent power AA RMS voltage and current AA Power factor and line frequency AA Instantaneous voltage, current and power AA Overcurrent, voltage sag and voltage swell detection AA UART / SPI serial interface options AA Internal register protection via checksum and write-protection AA On-chip voltage reference (25 ppm/°C typ.) AA Single 3.3V power supply AA Low power consumption: <13mW AA Small, low cost package options Electrical Specifications Active Energy Accuracy Reactive Energy Accuracy 0 -0.5 -1 Percent Error (%) Lagging PF = 0.5 Leading PF = 0.5 PF=1 0.5 IRMS Accuracy 1 1 Percent Error (%) Percent Error (%) 1 0.5 0 -0.5 0.5 0 -0.5 -1 -1 05 00 1000 1500 2000 2500 3000 3500 4000 4500 lRMS Error 05 Current Dynamic Range (x:1) 00 1000 1500 2000 2500 3000 3500 4000 4500 05 00 1000 1500 Current Dynamic Range (x:1) AFE + MCU Advantage vs Using SOCs AA Pre-programmed industry standard power calculations saves money and accelerates production schedules and time to market AA Up to 10X faster calibration AA Pair Cirrus Logic AFE with cost-optimized microcontroller tailored to the demands of the application AA Lock in AFE for metrology and easily change MCU to quickly adapt to changing market requirements AA Never pay for more memory, IO or performance than required Demonstration Board The CDB5484/80/90U is an extensive tool designed to evaluate the functionality and performance of the Cirrus Logic CS5484/80/90 family. Shunt resistors, current transformers or Rogowski coils can be connected to the analog inputs. Intuitive GUI software provides easy and full access to the on-board CS5484/80/90 device and MCU. On-board LEDs and LCD displays enable stand alone operation for extended testing. Getting started with a CDB enables fast and easy preliminary evaluation of Cirrus Logic’s AFE products. Part CS5484 CS5480 CS5490 CS5467 CS5464 CS5463 CS5451A ADC Converters 4 3 2 4 3 2 6 Current Sensor Options Shunt/CT/Rogowski Shunt/CT/Rogowski Shunt/CT/Rogowski Shunt/CT Shunt/CT Shunt/CT Shunt/CT Active Energy Accuracy 0.1% over 4000:1 dynamic range 0.1% over 4000:1 dynamic range 0.1% over 4000:1 dynamic range 0.1% over 1000:1 dynamic range 0.1% over 1000:1 dynamic range 0.1% over 1000:1 dynamic range N/A Reactive Energy Accuracy 0.1% over 4000:1 dynamic range 0.1% over 4000:1 dynamic range 0.1% over 4000:1 dynamic range 0.2% over 1000:1 0.2% over 1000:1 0.2% over 1000:1 N/A dynamic range dynamic range dynamic range IRMS Accuracy 0.1% over 1000:1 dynamic range 0.1% over 1000:1 dynamic range 0.1% over 1000:1 dynamic range 0.1% over 1000:1 dynamic range 0.1% over 1000:1 dynamic range 0.2% over 1000:1 N/A dynamic range SNR 80dB 80dB 80dB 78dB 78dB 78dB 77dB Serial Communication SPI/ UART SPI/ UART UART SPI SPI SPI SPI Digital Outputs 4x Configurable Outputs 3x Configurable Outputs Single Configurable Energy Pulses Output Energy Pulses Energy Pulses — VREF Drift 25ppm/C 25ppm/C 25ppm/C 40ppm/C 40ppm/C 40ppm/C 25ppm/C Input Voltage 3.3V 3.3V 3.3V 5V Analog 3.3/5V Digital 5V Analog 3.3/5V Digital 5V Analog 3.3/5V Digital 3V Analog 3V Digital Power Consumption <13mW <13mW <13mW 25mW 25mW 21mW 23mW Package 28 QFN 24 QFN 16 SOIC 28 SSOP 28 SSOP 24 SSOP 28 SSOP