UT8803

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 6

www.unisonic.com.tw

QW-R502-094,B

PIN CONFIGURATION

8

7

6

5

4

3

2

1

16

15

14

13

12

11

10

9

UOU1

NII 1

II 1

VREF

GND

TB

QTEST

TC1

CDS

TRIAC

RELAY

ZCD

VDD

II 2

NII 2

UOU2

PIN DESCRIPTION

PIN NO.

PIN NAME

FUNCTION

1

UOU1

First stage OP amp output

2

NⅡ1

First stage OP amp positive input

3

Ⅱ

1

First stage OP amp negative input

4

VREF

Reference voltage

5

GND

Ground

6

TB

7

QTEST

Test

8

TCI

9

CDS

CDS detect, inhibitory output in the daytime.

10

TRIAC

TRIAC output, active low

11

RELAY

RELAY output, active high

12

ZCD

Detect zero cross of AC line, synchronously pin TRIAC

13

VDD

Power supply

14

2

Ⅱ

Second stage OP amp negative input

15

N 2

Ⅱ

Second stage OP amp positive input

16

UOU2

Second stage OP amp output