WT8072H [ETC]
PIR CONTROLLER; PIR控制器
| 型号： | WT8072H |
| 厂家： | 
ETC |
| 描述： | PIR CONTROLLER |
| 文件： | 总5页 (文件大小：56K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
WT8072
PIR CONTROLLER
GENERAL DESCRIPTION
WT 8072 is a PIR (passive infra-red) controller, using analog mixing digital design technique and
manufactures by CMOS process which can either drive TRIAC or RELAY depending on users' choice.
With special noise immunity technique, WT8072 is the most stable PIR 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
*HIGH NOISE IMMUNITY.
*DRIVE EITHER RELAY OR TRIAC.
*ADJUSTABLE LIGHT ON DURATION.
*TRIAC CAN BE EITHER SHUNT OR SERIAL CONNECTED.
*PIR INPUT.
*CDS INPUT.
PIN CONFIGURATION
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PIN DESCRIPTION
Pin No. Pin Name I/O
Description
1
2
3
4
5
6
UOU1
NII 1
II 1
VREF
GND
TB
First stage OP amp output
First stage OP amp positive input
First stage OP amp negative input
Stable reference voltage
System ground
Time base for 1. The delay time of receiving PIR singnal to sent a puls to
trigger TRIAC or a high signal to trigger relay.
The delay time = R x C x 32.
The PIR signal patented and accepted only if the signal cycle greater than R
x C x 768 .When state of relay or TRIAC is changing form active into
inactive mode. It takes more than R x C x 4069, then system is able to
receive PIR signal again.
2.The flash cycle show the beginning of auto mode.
Note: Width of TRIAC pulse = R x C x 2.
Flash cycle: R x C x 32768
10 K < R < 1M Ohm
100pF < C < 0.1 Uf (Reference Diagram 1)
For testing only
7
QTEST
Weltrend Semiconductor, Inc.
Page 2
WT8072
PIR CONTROLLER
8
9
TCI
To set up the timing of how long Triac or relay is active.
During the period, if the system receives the PIR signal, then it restarts
counting the timing again.
The range for R: 10K < R < 1M Ohm
C: 100uF< C < 0.1 uF
(Reference Diagram 2)
CDS
Connected to a CDS for inhibiting relay or TRIAC being triggered.
If TRIAC or relay has already being triggered by PIR signal and turned into
active mode, then CDS can not inhibit PIR again.
To trigger TRIAC, active low
10
11
TRIAC
RELAY
Sink current: 15 mA max.
To drive relay, active high
Sink current: 10 mA max.
Source current: 10 mA max.
12
13
14
15
16
ZCD
VDD
II2
NII2
UOU2
Detect zero cross of AC line under remote mode function.
Operation voltage: 5V, stand by current: 1mA
2nd stage OP amp negative input
2nd stage OP amp positive input
2nd stage OP amp output
DIAGRAM 1, 2
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Weltrend Semiconductor, Inc.
Page 3
WT8072
PIR CONTROLLER
Absolute Maximum Ratings
Parameter
SYMBOL
VALUE
Units
POWER SUPPLY Vdd WITH REPECT TO Vss
VOLTAGE ON ANY PIN
OPERATING TEMPERATURE
STORAGE TEMPERATURE
Vdd-Vss
5.6
-0.3-5.6
0-70
V
V
C
C
Top
-65-150
ELECTRICAL CHARACTERISTICS
Symbol
Parameter
SUPPLY VOLTAGE
STANDY CURRENT
Condition
Min.
Typ.
Max. Unit
Vdd
Ist
Idd
4.2
0.9
1.8
5
1.0
5.5
1.2
2.5
V
mA
mA
OPERATING CURRENT
1.8mA, TRIAC
2.5mA, RELAY
Vdd>4.2V
Vref
Iref
STABLE VOLTAGE
SOURCE CURRENT OF Vref
RIPPLE OF Vref
3.0
200
3.2
3.4
V
uA
mV
0.5
INPUT
REGULATION OF Vref
TIME BASE OPERATING
FREQUENCY
AND
OUTPUT
0.3%
Ftb
Vt+
15
16
17
KHZ
V
CDS OPERATING TRIGGER
1.3
1.7
2.1
Vt-
Icds
Isource CDS
CDS OPREATING TRIGGER
CDS SOURCE CURRENT
0.6
2.6
9
0.9
3.5
10.4
1.1
4.4
17.4
V
uA
mA
OUTPUT
CURRENT
SOURCE
Isink
Tout1
CDS OUTPUT SINK CURRENT
TIMER DURATION OF OUT 1
11.6
0.03
13
21
9.3
mA
Sec.
C=0.001uF
R=4.7K-1M
C=0.01uF
R=4.7K-1M
C=100uF
R=4.7K-1M
C=0.1uF
R=4.7K-1M
4.6
1290
14.9
0.08
37.8
11170
Irs
Irsink
Vro
RELAY SOURCE CURRENT
RELAY SINK CURRENT
RELAY OPERATING VOLTAGE
5
5
18.8
mA
mA
V
18.8V: RELAY ON
13.1V: RELAY OFF
13.1
Itsink
TRIAC SINK CURRENT
15
50
mA
uA
Itsource TRIAC SOURCE CURRENT
Weltrend Semiconductor, Inc.
Page 4
WT8072
PIR CONTROLLER
TYPICAL APPLICATION
HOME SECURITY SYSTEM.
AUTO LIGHT SYSTEM FOR GARDEN, GARAGE, HALLWAY, STAIRCASE, PORCH, BATHROM, AND
ETC.
AUTO SWITCH FOR VENTILATION FAN.
AUTO NOTICE SYSTEM FOR OFFICE, STORAGE, AND ETC.
ORDERING INFORMATION
Ordering Number
WT8072
WT8072H
Package Type
P-DIP 16L
CHIP FORM
Weltrend Semiconductor, Inc.
Page 5
WT8072
PIR CONTROLLER
Weltrend Semiconductor, Inc.
Page 6
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