Datasheet for Microchip MCP3905/06 energy‑metering IC with specifications, pin functions and performance curves.
The MCP3905/06 is a dual‑channel energy‑metering IC from Microchip that provides active‑power measurement for single‑phase residential meters. It features two 16‑bit Σ‑Δ ADCs, programmable gain amplifiers, and both frequency and high‑frequency outputs for calibration.
The document includes electrical characteristics, pin descriptions, typical performance curves, and ordering information. It also outlines application notes such as reference‑voltage usage, high‑pass filter control, and negative‑power detection. This manual is written in Chinese.
| Supply voltage (VDD) | 4.5 V – 7.0 V |
|---|---|
| Analog/Digital supply (AVDD, DVDD) | 4.5 V – 5.5 V |
| ADC count | 2 × 16‑bit Σ‑Δ ADC |
| PGA gain options | -16:1 (MCP3905) / -32:1 (MCP3906) |
| Operating temperature range | -40 °C to +85 °C |
| IDD (typical) | 4 mA |
The device operates with AVDD and DVDD between 4.5 V and 5.5 V (VDD up to 7.0 V).
It contains two 16‑bit Σ‑Δ ADCs, one per measurement channel.