FEATURES
High accuracy supports 50 Hz/60 Hz IEC 62053-21
Less than 0.1% error over a dynamic range of 500 to 1
Compatible with 3-phase, 3-wire delta and 3-phase, 4-wire
Wye configurations
Supplies average active power on the frequency outputs F1?
and F2
High frequency output (CF) is intended for calibration and
supplies instantaneous active power
Logic output REVP indicates a potential miswiring or
negative power on the sum of all phases
Dropout indication for each phase on LED driver pins
Phase sequence error detection
Direct drive for electromechanical counters and 2-phase
stepper motors (F1 and F2)
Proprietary ADCs and DSP provide high accuracy over large
variations in environmental conditions and over time
On-chip power supply monitoring
On-chip creep protection (no load threshold)
On-chip reference 2.4 V ± 8% (25 ppm/°C typical) with
external overdrive capability
Single 5 V supply, low power (42.5 mW typical)
Low cost CMOS process