CS9803
Infrared Induction Control IC
Vol: 2004-01
2004-12-28
1/2
Semic●
General Description
The CS9803 is a passive infra-red controller, using analog mixing digital design technique and manufactures by
CMOS process which can either driver TRIAC or RELAY depending on user’s choice.
With special noise immunity technique, CS9803 is the most stable passive infrared controller you can find on the
market. More than this, there are few components needed in its application circuit which can reduce material cost and
increase competitive.
Features
Operating voltage: 4.5V～5.5V (DC)
Operating current≤1mA
CDS input
Pulse output for TRIAC drive or level output for relay drive
Built-in 2-stage operational amplifier
Adjustable output on time duration
On –chip regulator for PIR sensor
Zero-crossing triggering
Application:
Home security system
Auto light system for garden, garage, hallway, staircase, porch, bathroom, etc.
Auto switch for ventilation fan
Auto notice system for office, storage, etc.
Package: DIP16
Absolute Maximum Ratings
Supply Voltage：..............................................................................................................................................-0.3～6.0V
Operating Temperature：...............................................................................................................................-25～+70℃
Input Voltage：................................................................................................................................-0.5～（VDD+0.5）V
Storage Temperature：................................................................................................................................-55～+150℃
Power Dissipation：.............................................................................................................................................. 500mW
Pin Description
No.
Pin Name
I/O
Function Description
1
UOU1
O
First stage OP amp output
2
NII1
I
First stage OP amp positive input
3
II1
I
First stage OP amp negative input
4
VREF
O
Stable reference voltage
5
GND
P
System ground
6
TB
I
System clock
7
QTEST
I
Test only
8
TCI
I
To set up the timing of how long Triac or relay is active
9
CDS
I
Detect CDS
10
TRIAC
O
TRIAC output
11
RELAY
O
RELAY output
12
ZCD
I
Detect zero cross
13
VDD
P
Power ground
14
II2
I
Second stage OP amp negative input
15
NII2
I
Second stage OP amp positive input
16
UOU2
O
Second stage OP amp output
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