EVAL-ADE7762EBZ Ver la hoja de datos (PDF) - Analog Devices

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componentes Descripción

Fabricante

EVAL-ADE7762EBZ

Polyphase Energy Metering IC with Phase Drop Indication

Analog Devices 

ADE7762

Pin No.

21

Mnemonic

CLKIN

22

23, 24

25, 26

27

28

CLKOUT

S0, S1

F2, F1

LED_C

LED_B

Description

Master Clock for the ADCs and Digital Signal Processing. An external clock can be provided at this logic

input. Alternatively, a parallel resonant AT crystal can be connected across CLKIN and CLKOUT to

provide a clock source for the ADE7762. The clock frequency for the specified operation is 10 MHz.

Ceramic load capacitors between 22 pF and 33 pF should be used with the gate oscillator circuit. Refer

to the crystal manufacturer’s data sheet for the load capacitance requirements.

A crystal can be connected across this pin and CLKIN as described for Pin 21 to provide a clock source

for the ADE7762. The CLKOUT pin can drive one CMOS load when an external clock is supplied at CLKIN

or when a crystal is used.

These logic inputs are used to select one of four possible frequencies for the digital-to-frequency

conversion for design flexibility.

Low Frequency Logic Outputs. F1 and F2 supply average active power information. These logic outputs

can be used to drive electromechanical counters and 2-phase stepper motors directly (see the Transfer

Function section).

Phase C Phase Monitor Output. LEDs are connected to this pin to indicate phase drop or reverse power

on Phase C (see the Phase Monitor section).

Phase B Phase Monitor Output. LEDs are connected to this pin to indicate phase drop or reverse power

on Phase B (see the Phase Monitor section).

Rev. 0 | Page 8 of 28

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