WT8076

Passive Infrared (PIR) Controller

Version 1.0 25-May-1995

©Weltrend Semiconductor, Inc. All Rights Reserved

1

Weltrend Semiconductor Inc.

2F, No. 24, Industry E. 9

TEL:886-3-5780241

FAX:886-3-5794278.5770419

eltrend

GENERAL DESCRIPTION

The WT8076 is a PIR controller IC which integrates amplifier, window detector and light control

functions. The light can be controlled by a Relay or Triac with adjustable delay time. A CDS interface is

provided to sense day time and night time. A walk-test fuction helps user while setting up the light set.

The line remote control function can switch the light set between auto mode and always-on mode.

FEATURES

• Adjustable detection range

• Adjustable delay time

• CDS interface to differentiate night time and day time

• Walk-test function

• Line remote control to switch auto mode and always on mode

• Relay or Triac output

• High noise immunity

• Low power consumption ( operating 500uA, standby 130uA, Typ. )

PIN ASSIGNMENT

UOU1

NII1

II1

VREF

GND

TB

TCI

UOU2

NII2

II2

CDS

VDD

ZCD

RELAY

TRIAC

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

GND

TB

TCI

TRIAC

RELAY

ZCD

VDD

VREF

II1

NII1

UOU1

UOU2

NII2

II2

CDS

UOU1

NII1

II1

VREF

GND

TB

TCI

UOU2

NII2

II2

CDS

VDD

ZCD

RELAY

TRIAC

1

2

3

4

5

6

7

8

9

18

17

16

15

14

13

12

11

10

ND

WK

WT8076N16P1

WT8076S16P1

WT8076N18P2

Ordering Information

PART No.

PACKAGE

WT8076N16P1

16 Pin P-DIP

WT8076S16P1

16 Pin SOIC

WT8076N18P2

18 Pin P-DIP