This document introduces the features and characteristics of the BL6503 single-phase energy meter IC, including high accuracy, low static power consumption, on-chip power supply detection and anti-creep protection.
The BL6503 is a low‑cost, high‑accuracy single‑phase energy‑meter IC designed for two‑wire distribution systems. It measures real power in both positive and negative orientations and provides low‑frequency outputs (F1, F2) for electromechanical counters or stepper motors, plus a high‑frequency CF output for instantaneous power.
The device operates from a single 5 V supply, features on‑chip voltage reference, low static power (≈15 mW), and programmable gain options for the current channel. It includes on‑chip power‑supply monitoring and anti‑creep protection, making it suitable for long‑term, stable metering applications.
| Supply voltage | Single 5 V |
|---|---|
| Accuracy | Error < 0.1 % over 500:1 range |
| Static power consumption | Typical 15 mW |
| On‑chip voltage reference | 2.42 V ± 8 % |
| Power dissipation (DIP‑24) | 400 mW |
| Operating temperature range | -40 °C to +85 °C |
| Maximum voltage‑channel differential input | ±660 mV |
| Maximum current‑channel differential input | ±1660 mV |
| Gain settings (current channel) | 1, 2, 8, 16 |
The BL6503 operates from a single 5 V supply.
It provides high accuracy with less than 0.1 % error over a 500:1 dynamic range.
Four gain options are available: 1, 2, 8, and 16.