Rato
RT1072
Description:
RT1072 IS A PIR (Passive Infra-Red) CONTROLLER; THE PIR CONTROLLER CAN
SENSE THE MOTION MOVEMENT AND ACTIVATE THE ELECTRONIC APPLICATION.
THE INTERSTRACTURE OF THE PIR CONTROLLER IC IS USING THE ANALOG MIXING
DIGITAL TECHNIQUE TO DESIGN ( MIXED-MODE); IT IS PROVEN TO BE VERY STABLE
IN ANY CIRCUMSTANCES. IT CAN BE EITHER DRIVE TRIAC OR RELAY DEPENDING
ON USERS’ CHOICE. THE APPLICATION CIRCUIT IS VERY COST EFFECTIVE.
FEATURES :
1.
2.
3.
4.
5.
6.
MIXED-MODE CMOS IC.
HIGH NOICE IMMUNITY.
CONSTANT CURRENT CDS INPUT.
PIR INPUT.
ADJUSTABLE OUTPUT DURATION.
DRIVE EITHER RELAY OR TRIAC.
APPLICATION：
1.
2.
3.
4.
HOME, OFFICE OR FACTORY SECURITY SYSTEMS.
AUTO LIGHTING SYSTEMS.
AUTO DOOR BELL.
MOTION DETECTOR.
PIN CONFIGURATION :
OP1
1
P1
2
16
15
N1
3
4
14
13
N2
12
ZCD
TB
5
6
11
RELAY
TEST
7
TRIAC
TC
8
10
9
VREF
GND
OP2
P2
VDD
CDS
RT1072
K040616-V2.0
1
PIR CONTROLLER
Rato
RT1072
PIN DESCRIPTION :
PIN No.
1
2
3
4
5
PIN Name
OP1
P1
N1
VREF
GND
I/O
O
I
I
O
6
TB
I
7
TEST
I
8
TC
I
9
CDS
I
10
TRIAC
O
11
RELAY
O
12
13
14
15
16
ZCD
VDD
N2
P2
OP2
I
I
I
O
Description
FIRST STAGE OP OUTPUT.
FIRST STAGE OP POSITIVE INPUT.
FIRST STAGE OP NEGATIVE INPUT.
REGULATOR VOLTAGE.OUTPUT
GROUND.
EXTERNAL R.C.OSCILLATION CIRCUIT FOR SYSTEM
FREQUENCY.
IC TEST PIN.
EXTERNAL R.C.OSCILLATION CIRCUIT TO ACTIVATE THE
TIMING OF TRIAC OR RELAY.
TO CONNECT TO CDS SENSOR. TO SENSE THE
SURROUNDING DARK & BRIGHNESS.
WHEN THE SYSTEM IS ACTIVATING, THE SIGNAL WILL
ACTIVE LOW TO DRIVE TRIAC.
WHEN THE SYSTEM IS ACTIVATING, THE SIGNAL WILL
ACTIVE HIGH TO DRIVE APPLICATION CIRCUIT OF
RELAY.
DETECT ZERO CROSS OF AC LINE
POSITIVE POWER INPUT
2ND STAGE OP NEGATIVE INPUT.
2ND STAGE OP POSITIVE INPUT.
2ND STAGE OP OUTPUT.
FUNCTIONAL DESCRIPTION :
Block Diagram：
OP2
N2
COMPARATOR
DETECTOR
ZERO CROSS
ZCD
P2
VDD
VREF
OP1
BANDGAP
GND
N1
P1
CDS
CONTROLL
CIRCUIT
TC
OSC 1
TIMER
OUTPUT
CIRCUIT
TEST
TB
K040616-V2.0
OSC 2
TRIAC
RELAY
SYSTEM
CLOCK
2
PIR CONTROLLER
Rato
RT1072
TB：
WHEN THE PIR DETECT A SIGNAL INPUT, THE SIGNAL SHOULD BE LARGER THAN
768 TB CYCLE. AND THE SYSTEM WILL RECOGNISED THE SIGNAL, AFTER THE
RECOGNITION IS ACCEPTED, AND SYSTEM WILL DELAY 32 TB CYCLE, AND IT WILL
SENT A PULSE TO ACTIVATE EITHER TRIAC OR RELAY. WHEN THE TRIAC OR RELAY
CHANGES FROM ACTIVE INTO INACTIVE MODE, THE SYSTEM HAVE TO GO
THROUGH 4096 TB CYCLE TO DETECT ANOTHER PIR SIGNAL AGAIN.
R
TB
C
TC：
WHEN THE SYSTEM IS ACTIVATE, TRIAC OR RELAY WILL CONTINUOUSLY SENT OUT
A SIGNAL, THE TIMING OF THE SIGNAL CAN BE SET BY TC, THE TOTAL TIMING
PERIOD FOR TC CYCLE IS 245760. THE PERIOD OF TC CAN BE TUNE BY RC. DURING
THE ACTIVE PERIOD, IF THE SYSTEM RECEIVES THE PIR SIGNAL, THEN IT
RESTARTS COUNTING THE TIMING BEGIN WITH 245760 AGAIN.
R
TC
DIVIDER
C
K040616-V2.0
3
PIR CONTROLLER
Rato
RT1072
CDS：
THE INPUT PIN IS TO DETECT DAY OR NIGHT, IF THE BRIGHTNESS IS BRIGHT
ENOUGH, THE CDS WILL REMAIN IN LOW STATE, THE PIR IS NOT ACTIVATE,
THE OTHER HAND, CDS WILL IN HIGH STATE AND ENABLE CDS FUNCTION.
ON
CDS
CDS
C
VR
Timing Diagram：
RSTB
CDS
VIH
OP2
VIL
Comparator
output
> 768 TB (NOTE 1)
< 768 TB
> 768 TB (NOTE 1)
RELAY
245760 TC
4096 TB
(NOTE 2)
TRIAC
2TB
NOTE：(一)COMPARATOR OUTPUT SIGNAL SHOULD BE LARGER THAN 768 TB CYCLE,
THEN THE SYSTEMS IS ACTIVATE, IF NOT, IT WILL DEACTIVATE.
(二)TRIAC OR RELAY OUTPUT CONTINUOS ACTIVE PERIOD IS 245760 TC
CYCLE, DURING THE ACTIVE PERIOD, IF THE SYSTEM RECEIVES
ANOTHER PIR SIGNAL, THEN IT RESTARTS COUNTING THE TIMING UNTIL
IT IS OVER.
K040616-V2.0
4
PIR CONTROLLER
Rato
RT1072
Maximum Ratings
Symbol
VDD
VI
VO
Pdis
TOP
Tst
Parameter
Supply voltage
Input voltage
Output voltage
Max. Power Dissipation
Operating Temperature
Storage Temperature
Condition
Rating
-0.3 ~ 6
-0.3 ~ Vcc+0.3
-0.3 ~ Vcc+0.3
300
-20 ~ 70
-50 ~ 125
Vdd=5V
Unit
V
V
V
mW
℃
℃
Electrical Characteristics
Symbol
VDD
Vref
VIH (CDS)
VIL (CDS)
Parameter
Supply voltage
Regulated Voltage
CDS Input High Voltage
CDS Input Low Voltage
Idd
Operating Current
ISB
Stand By Current
Iref
Icds
Source Current of Vref
Source Current of CDS
Source Current of Relay
Sink Current of Relay
Sink Current of TRIAC
Frequency of TB
Frequency of TC
OP Amp open loop gain
OP Amp Input offset
voltage
IOH (relay)
IOL (relay)
IOL (triac)
fTB
fTC
AVO
VOS
K040616-V2.0
Condition
Vdd=5V
Vdd=5V
Vdd=5V
Vdd=5V
No Load,
OSC ON
Vdd=5V
No Load,
OSC OFF
Min.
3.6
3
2.1
1.5
Typ.
5
3.2
2.3
1.7
Max.
5.5
3.4
2.5
2.0
Unit
V
V
V
V
60
70
100
μA
40
60
μA
10
5
5
15
19.2
19.2
μA
μA
mA
mA
mA
KHz
KHz
dB
5
mV
200
3
12.8
12.8
Vdd=5V
Vdd=5V
5
5
16
16
100
PIR CONTROLLER