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PDF WT8076 Data sheet ( Hoja de datos )
| Número de pieza | WT8076 | |
| Descripción | Passive Infrared (PIR) Controller | |
| Fabricantes | Weltrend | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de WT8076 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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eltrend
WT8076
Passive Infrared (PIR) Controller
Version 1.0 25-May-1995
©Weltrend Semiconductor, Inc. All Rights Reserved
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.
www.DataSheet4UF.EcoAm TURES
• 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
WT8076N16P1
UOU1
NII1
II1
VREF
GND
TB
TCI
1
2
3
4
5
6
7
8
16 UOU2
15 NII2
14 II2
13 CDS
12 VDD
11 ZCD
10 RELAY
9 TRIAC
WT8076S16P1
GND
TB
TCI
TRIAC
RELAY
ZCD
VDD
1
2
3
4
5
6
7
8
16 VREF
15 II1
14 NII1
13 UOU1
12 UOU2
11 NII2
10 II2
9 CDS
WT8076N18P2
UOU1
NII1
II1
VREF
GND
TB
TCI
TRIAC
1
2
3
4
5
6
7
8
9
18 UOU2
17 NII2
16 II2
15 CDS
14 VDD
13 ND
12 WK
11 ZCD
10 RELAY
Ordering Information
PART No.
WT8076N16P1
WT8076S16P1
WT8076N18P2
PACKAGE
16 Pin P-DIP
16 Pin SOIC
18 Pin P-DIP
Weltrend Semiconductor Inc.
1
2F, No. 24, Industry E. 9th RD., Science-Based Industrial Park, Hsin-Chu, Taiwan
TEL:886-3-5780241 FAX:886-3-5794278.5770419
1 page  
eltrend
WT8076
Passive Infrared (PIR) Controller
CDS Interface
The CDS interface detects the level on the CDS pin. If the level is higher than 1.95V, it is night time.
If the level is lower than 1.25V, it is day time.
Operating Modes
The operating modes of WT8076 are:
(1) Auto mode:
The light will turn on when a valid pulse is detected in the night time.
www.DataSheet4U(.2c)omAIflwthaeysNoDn
mode:
pin is low
level,
the
light
is
always
on
in
the
night
time.
When
it
detects
day
time,
the
light will be turn off, and back to auto mode.
If the ND pin is high level, the light is always on.
(3) Walk-test mode:
The walk-test mode is active after the power is on. This mode is same as the auto mode except
the CDS is ignored. That is, the light will be turn on when a valid pulse is detected no matter it is
night time or day time.
Remote Control
To switch auto mode between always on mode, the WT8076 detects the zero crossings of the AC line. If
the line switch OFF and ON one time in 3 seconds, it toggles the auto mode and always on mode.
Time Base
The RC oscillator on the TB pin generates the system clock. The frequency is 30kHz typically (R
=30Kohm, C=1000pF) .
The following parameters are decided by the time base :
(1) Trigger angle of the TRIAC (24O , if time base is 30kHz).
(2) Pulse width (90ms,if time base is 30kHz).
(3) Remote control switch time.
(4) Disable PIR after the light is off.
(5) Total walk-test time.
The RC oscillator on the TCI pin sets the delay time. Figure 2 shows the relationship betwteen delay
time and the R ( C=1000pF).
Weltrend Semiconductor Inc.
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet WT8076.PDF ] | |
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