AFEs deliver highest measurement accuracy

Ideal for today’s smart utility meter applications, the CS5484/80/90 family of analog-front-end (AFE) ICs feature a measurement accuracy of 0.1% over 4,000:1 dynamic range for both active and reactive energy. A pre-programmed power calculation engine eliminates any need for manual programming and also mitigates security concerns. According to the company two-second calibration times are up to 10 times faster than many competing SOCs, translating to accelerated production line cycles and lower overall cost.

The CS5480 is a three-channel part, the CS5484 a four-channel part, and the CS5490 a two-channel part. All incorporate independednt fourth-order delta-sigma A/D converters for all channels, reference circuitry, and the proven EXL signal-processing core to provide active, reactive, and apparent energy measurement.

Additional features include a power consumption of less than 13 mW, a supply voltage of 3.3 V, an on-chip voltage reference of 25 ppm/°C, and an on-chip temperature sensor. The CS5484 is housed in a 28-pin QFN package, the CS5480 in a 24-pin QFN, and the CS5490 in a 16-pin SOIC package. ($0.75 ea/100,000 — available now.)

By Christina Nickolas

Cirrus Logic , Austin , TX
Product Support 800-625-4084
http://www.cirrus.com