HLW8110 high-precision energy metering chip IC SOP-8

Description

HLW8110 high-precision energy metering chip IC SOP-8

General Specifications

• Part Name: HLW8110

• Manufacturer: Hiliwei Tech (energy metering IC maker)

• Package: SOP-8 surface-mount package

• Supply Voltage (VDD): Typically 3 V ~ 3.6 V

• Operating Temperature: -40 °C to +85 °C

• Communication Interface: UART

• Dynamic Range: ~5000:1 (very wide measurement range)

• Channels: 3 measurement channels (voltage + current measurement paths)

Core Functional Capabilities

The HLW8110 is designed for precision single-phase energy measurement and includes the following features (from detailed datasheet notes):

• High-precision measurement: uses three Σ-Δ ADCs and a dedicated metering core for voltage/current/power calculations.

• Instantaneous measurements: real-time voltage, current, and power (active/reactive) calculation.

• Energy Pulse Outputs: pulse outputs (e.g., CF/CF1) proportional to energy for external counting.

• Detection functions:

  • Zero-crossing detection for synchronization.

  • Over/under-voltage and over-current flags.

  • Leakage/zero-line current detection in some configurations (via second current channel).

• Configurable Gain (PGA): supports different current sensors — low-value shunt, CTs, etc.

• Built-in Reference & Oscillator: internal clock source and reference for stable ADC operation.

Accuracy & Measurement Performance

According to documented datasheet excerpts:

• Active energy error: < ±0.1 % over a large dynamic range (~5000:1).

• Instantaneous measurement errors: < ±0.1 % for voltage and current RMS in key ranges.

Interfaces & Integration

• UART Serial Interface: primary for register access, calibration, and data readout.

Typical Application Use Cases

The HLW8110 is widely used in:

• Smart plugs and sockets

• Home energy monitoring devices

• Single-phase electricity meters

• PDU/UPS power monitoring

• IoT power measurement modules

Notes When Designing With HLW8110

• The datasheet supports 3.3 V and 5 V supply variants, but you must verify the specific revision you’re using.

• Ensure proper current/voltage sensing front end (shunt resistor or CT interface) with adequate PGA settings.

• Calibration and UART timing details are in the full datasheet—required for accurate metering.