FEATURES

trimpots required

hour meters

sames

sames

Programmable Single Phase Energy Metering

IC with Tamper Detection

SA2007P

1/12

SPEC-0074 (REV. 2)

16-01-01

DESCRIPTION

The SAMES SA2007P is a single phase bi-directional energy

metering integrated circuit. It provides a cost effective 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 lines.

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 SA2007P drives the calibration LED, the indicator LEDs

and the electro-mechanical counter directly.

The SA2007P does not require any external trim-pots. All

required calibration and configuration data is read from a small

external EEPROM.

The SA2007P 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

PROCESSING

AND

POWER

CALCULATION

COM-

PARATOR

POWER

TO

PULSE

RATE

IIC

BUS

INTERFACE

VOLTAGE

REF.

OSC

ELT

VSS

VDD

SEL1

DIRO

LED

MOP

MON

TEST

VREF

Dr-01594

TCLK

SDA

SCL

POWER 1 (DIGITAL)

POWER 2 (DIGITAL)

GND

IIN2

RLOAD

PRELIMINARY