نظرة عامة على المنتج
The 71M6541D-IGT/F from Teridian (Maxim Integrated) is a single-phase energy metering analog front-end IC with 24-bit sigma-delta ADCs achieving 0.1% accuracy over a 1000:1 dynamic range. It integrates a precision RTC, voltage reference, and LCD driver for smart meter applications.
المواصفات الرئيسية
| الوظيفة | Single-phase energy metering AFE |
| Accuracy | 0.1% over 1000:1 dynamic range |
| ADC Resolution | 24-bit sigma-delta |
| الواجهة | SPI |
| جهد الإمداد | 3.3V or 5V |
| Operating Temp | -40 to +85°C |
| الحزمة | LQFP-64 (10x10mm) |
مبدأ العمل
Two 24-bit sigma-delta ADCs sample voltage and current channels simultaneously. A 32-bit compute engine (CE) performs real-time multiplication and integration for active/reactive energy, RMS, and power factor. Internal temperature compensation and gain calibration maintain 0.1% accuracy across temperature and time.
التطبيقات
- Single-phase smart electricity meter
- Sub-metering / tenant metering
- Energy monitoring in IoT
- Prepayment meter