ADE7858A
Overview
The ADE7854A/ADE7858A/ADE7868A/ADE7878A are high accuracy, 3-phase electrical energy measurement ICs with serial interfaces and three flexible pulse outputs. The devices incorporate second-order Σ-∆ analog-to-digital converters (ADCs), a digital int.
- 1% error (typical) in active and reactive energy over a dynamic range of 1000 to 1 at TA = 25°C
- 2% error (typical) in active and reactive energy over a dynamic range of 3000 to 1 at TA = 25°C Averaged rms measurements available in low ripple rms registers Supports current transformer and di/dt current sensors Dedicated ADC channel for neutral current input Estimated neutral current measurement by calculating the rms of the sum of the phase currents in all 3 phases 0.1% error (typical) in voltage and current rms over a dynamic range of 1000 to 1 at TA = 25°C Supplies sampled waveform data on all 3 phases and on neutral current Selectable no load thresholds for total and fundamental active and reactive powers, as well as for apparent powers Highly accurate low power battery mode phase current monitoring for antitampering detection Battery supply input for missing neutral operation Phase angle measurements in current and voltage channels Calibration frequency (CF) output directly drives LED and opto-isolators Reference: 1.2 V (drift of ±5 ppm/°C typical) with external overdrive capability Single 3.3 V supply 40-lead, Pb-free lead frame chip scale package (LFCSP) Operating temperature: -40°C to +85°C Flexible I2C, SPI, and HSDC serial interfaces
