FEATURES

hour meters

sames

sames

Single Phase Power/Energy Metering IC with

Tamper Detection

SA2007M

1/10

SPEC-0075 (REV. 2)

16-01-01

DESCRIPTION

The SAMES SA2007M is a single-phase bidirectional energy

metering integrated circuit. It provides a mono-chip solution for

energy meters with electro-mechanical displays, such as

stepper motors and impulse counters. A precision oscillator,

that replaces an external crystal is integrated on chip.

Two current sensor inputs allow the measurement of energy

consumption on both the live and neutral.

Direction detection of energy flow as well as other common

tamper conditions are flagged.

The power consumption on both the live and neutral are

continuously measured and the larger of the two is selected for

energy metering.

The SA2007M drives the calibration LED, the indicator LEDs

and the electro-mechanical counter directly.

The SA2007M integrated circuit is available in 20 pin dual-in-

line plastic (DIP-20) and small outline (SOIC-20) package

types.

Figure 1: Block diagram

IIN1

IIP1

IIP2

IVP

ANALOG

SIGNAL

PRO-

CESSING

AND

POWER

CAL-

CULATION

COM-

PARATOR

POWER

TO

PULSE RATE

VOLTAGE

REF.

OSC

ELT

VSS

VDD

SEL1

DIRO

LED

MOP

MON

RATED

VREF

Dr-01558

MP0

MP1

POWER 1 (DIGITAL)

POWER 2 (DIGITAL)

GND

IIN2

TCLK

PRELIMINARY