sames

PM9603AP

SA9603B APPLICATION NOTE

FEATURES

n

Performs both power and energy

measurement

n

Meets the accuracy requirements for

Class 1 AC Watt hour meters

n

Protected against ESD

n

Total power consumption rating below

500mW (excluding current sensing)

SINGLE PHASE POWER/ENERGY METERING MODULE

SPI INTERFACE

n

Uses a shunt resistor for current sensing

n

Operates over a wide temperature

range

n

Isolated SPI interface.

DESCRIPTION

The SAMES single phase power/energy metering module, the PM9603AP, provides

energy data via a isolated SPI interface.

Energy consumption is determined by the power measurement being integrated over

time.

The method of calculation takes the power factor into account.

The output of this innovative universal power/energy meter is ideally suited for energy

calculations in applications using a micro-controller.

The application utilises the SAMES SA9603B power metering integrated circuit for power

measurement.

As a safety measure, this application shows the current sensor connected to the neutral

line. In practice, the live line may be used for current sensing, provided that the supply

connections (MAINS) are reversed on the module.

7131

PDS038-SA9603B-001

REV.A

5-09-97

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