PT8A263 Datasheet, PDF (1/11 Pages) Pericom Semiconductor Corporation – PIR Alarm Controller

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Features
 Low standby current
 2 stage op-amp for filtering
 On-chip oscillator
 On-chip voltage regulator
 4 different operation modes selected by SEL1 &
SEL2
 Low battery detector
 Built-in noise rejection circuit
 LED output indicating warm-up period, low battery
and PIR trigger signal
 2 outputs to drive external devices such as speech
ICs, high pitch piezo buzzer or door bell ICs
 Lead free DIP-16 and SOIC-16 package
 Door chime applications with external door bell
ICs
Block Diagram
OP2O
OP2N
_
OP2P
+
Comparator
OP1O
OP1P
OP1N
V_EE
OSC
Voltage
divider
+
_
Regulator
Low Battery
Detector
System
oscillator
PT8A263
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PIR Alarm Controller
PIR Alarm Controller
Description
PT8A263 is a fully integrated mixed-signal CMOS LSI
chip designed for the low cost applications of PIR
(passive Infrared) alarm control system. The analog
front-end is based on PTI’s proven PIR controller IC
(PT8A261). The multipurpose alarm IC can be widely
used in a variety of applications ranging from household
security, portable alarm to toys.
PT8A263 is also equipped with op-amps for filtering, a
comparator, timer, low battery detector, control circuit,
voltage regulator and oscillator.
Applications
 Low cost security system sensor components
 Motion sensor to drive low cost speech chip for
alarm alert
 Motion detect alarm with high pitch buzzer alert
Noise
rejection
circuit
Mode
control
circuit
Control circuit
SEL1
SEL2
OUT1
OUT2
LED
GND
V_CC
RST
12-07-0006
PT0084-6
07/06/12/12
1