Datasheet HLW8032 (Hiliwi Technology) - 3

HLW8032 Features
 Able to measure effective value of active power, apparent power, current and voltage  Output of active electric energy pulse from PF pin  Measuring error of active power reaches 0.2% with dynamic range of 1000:1  Measuring error of effective current reaches 0.5% with dynamic range of 1000:1  Measuring error of effective voltage reaches 0.5% within dynamic range of 1000:1  Built-in frequency oscillator  Built-in voltage reference source  Built-in power supply monitoring circuit  UART communication  SOP8 packaging
General Description
HLW8032 is a high-precision electric energy metering IC which is manufactured using CMOS process and is mainly applied to single-phase application. It is able to measure line voltage and current and calculate active power, apparent power and power factor. The interior of the device integrates two ∑-Δ ADCs and one high-precision inner core of electric energy metering. Able to communicate data via UART port, HLW8032 adopts 5V power supply and built-in 3.579M crystal oscillator, and uses SOP packaging with 8Pin. Featured with high precision, low power consumption, high reliability, strong adaptability to environment, etc., HLW8032 is applicable to electric energy metering for power consumers with single-phase two-wire system.
Functional block diagram
VDD
Internal Power On Clock Reset
IP
PGA ADC
Sigma_I Active Power IN I_rms REG V_rms RX UART calculation PF VP
PGA ADC
Sigma_V TX 1k
Reference Voltage
2.43V GND REV 1.5 3/16 www.hiliwi.com Fig. 1 Functional block diagram of chip