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AFE Description

In the energy metering filed, AFE (Analog Front End) chips are the digital analog mixed integrated circuits, including DAC, bandgap voltage reference, power management module, clock control module, metering calculation, and energy-pulse conversion and output functions, etc.

V9260/F

Single-phase AFE, low power, with UART interface

single 3.3V power, wide range: 2.8V~3.6V

integrated reference: 1.188V (typical drift 10ppm/°C)

typical power consumption in full operation: 1.5mA

2 independent oversampling Σ/ΔADCs: current channel and voltage channel

supports IEC 62053-21:2003, IEC 62053-22:2003 and IEC 62053-23:2003

less than 0.1% error in active energy over a dynamic range of 5000:1

less than 0.1% error in reactive energy over a dynamic range of 3000:1

measures: current and voltage DC, Vrms, Irms, Watt, VAR and frequency

current input: shunt resistor

internal hardware WDT

UART interface

6.5536MHz or 3.2768MHz crystal oscillator

operating temperature: -40~+85°C

16 – SOP

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