SA9102C

4/12

sames

PIN DESCRIPTION

Pin

Designation

Description

20

GND

Ground

8

V

DD

Positive Supply Voltage

14

V

SS

Negative Supply Voltage

19

IVP

Analog input for Voltage

1

IIN

Inputs for current sensor

2

IIP

11

OSC1

Connections for crystal or ceramic resonator

10

OSC2

(OSC1 = Input : OSC2 = Output)

12

FOUT1

First pulse rate output

13

FOUT2

Second pulse rate output

4

CVON

Connections for outer loop capacitor of

5

CVOP

A/D converter (Voltage)

6

CVIN

Connections for inner loop capacitor of

7

CVIP

A/D converter (Voltage)

15

CIIP

Connections for inner loop capacitor of

16

CIIN

A/D converter (Current)

17

CIOP

Connections for outer loop capacitor of

18

CION

A/D converter (Current)

3

VREF

Connection for current setting resistor

9

NC

Not connected

FUNCTIONAL DESCRIPTION

The SA9102C is a CMOS mixed signal Analog/Digital integrated circuit, which performs

power/energy calculations across a power range of 1000:1, to an overall accurancy of

better than Class 1.

The integrated circuit includes all the required functions for 1-phase power and energy

measurement, such as two oversampling A/D converters for the voltage and current

sense inputs, power calculation and energy integration. Internal offsets are eliminated

through the use of cancellation procedures.

The SA9102C generates pulses, the

frequency of which is proportional to the power consumption. Two frequency outputs'

(FOUT1 and FOUT2) are available, with a third frequency option available on request.