Three Channel Energy Measurement IC

The CS5480 is part of the CS548x/9x family of high performance analog front end solutions for energy measurement with two (CS5490), three (CS5480) or four (CS5484) 24-bit analog to digital converters. It provides high-accuracy energy measurement at a very low price, and on-chip energy calculations and fast on-chip calibration speeds product development cycles. Flexibility in current sensors, serial communications and digital outputs ensures that the CS5480 is a fit for any application requiring high-accuracy energy measurement at a very low price.


Energy Measurement


  • Superior analog performance with ultra-low noise level and high SNR
  • Energy measurement accuracy of 0.1% over 4000:1 dynamic range
  • Current RMS measurement accuracy of 0.1% over 1000:1 dynamic range
  • 3 independent 24 bit, 4th order Delta Sigma modulators for voltage and current measurements
  • 3 configurable digital outputs for energy pulses, zero crossing or energy direction
  • Supports shunt resistor, CT and Rogowski coil current sensors
  • Overcurrent, voltage sag and voltage swell detection
  • UART / SPI serial interface
  • Internal register protection via checksum and write-protection
  • On-chip voltage reference (25 ppm/°C typ.)
  • Single 3.3V power supply
  • Low power consumption: < 13mW
  • CS5480: 4mm x 4mm 24-pin QFN ackage
  • On-chip measurements / calculations:
    • Active, reactive and apparent power
    • RMS voltage and current
    • Power factor and line frequency
    • Instantaneous voltage, current and power

Parametric Specifications

ADC Converters 3
Current Sensor Options Shunt;
Active Energy Accuracy 0.1% over 4000:1 dynamic range
Reactive Energy Accuracy 0.1% over 4000:1 dynamic range
SNR (dB) 80
Digital Outputs 3x Configurable Outputs
Power Consumption (mW) 13
Package 24 QFN

Technical Documents

Errata: CS5480 Rev B0 Silicon

Jun 6, 2013, ER980B2 : 210 Kb

CS5480 Product Datasheet

Mar 15, 2013, DS980F3 : 983 Kb

CS5480/84/90 Product Bulletin

Jan 24, 2012, n/a : 1484 Kb

Software and Tools

CDB5480U Evaluation GUI

Mar 28, 2012, v2.2.2 : 27218 Kb


Comprehensive Solutions