PT8A2646PE [DIODES]
Analog Circuit, CMOS, PDIP16,;
| 型号： | PT8A2646PE |
| 厂家： | 
DIODES INCORPORATED |
| 描述： | Analog Circuit, CMOS, PDIP16, 光电二极管 |
| 文件： | 总13页 (文件大小：373K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PT8A2641-2642/2645-2648
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PIR Sensor Light Switch
Product Features
Product Description
Operating voltage: 5V (Typ.)
Average supply current: 120µA (Typ.)
2 stage op-amp for filter.
The PT8A264X is a CMOS LSI chip designed
for use in automatic PIR lamp control. It can operate
with a 2-wire configuration for triac applications or
with a 3-wire configuration for relay applications.
The chip is equipped with operational amplifiers, a
comparator, timer, a zero crossing detector, control
circuit, a voltage regulator, a system oscillator, and
an output timing oscillator.
Build-in noise rejection circuit.
On-chip regulator.
Adjustable output duration
Override function.
Its PIR sensor detects infrared power variations
induced by the motion of a human body and
transforms it to a voltage variation. If the PIR output
voltage variation conforms to the criteria (refer to the
functional description), the lamp is turned on with an
adjustable duration. The PT8A264X offers three
operating modes (ON, AUTO, OFF) which can be set
through the MODE pin. While the chip is working in
the AUTO mode the user can override it and switch
to the quickly install mode, or manual ON mode, or
return to the AUTO mode by switching the power
switch.
ON/AUTO/OFF selectable by MODE pin
Apply to AC 220V/50Hz and 110V/60Hz.
Auto-reset if the ZC signal disappears over 3
seconds
Output pulse (PT8A2641/5/7) to drive triac or
output level (PT8A2642/6/8) to drive relay.
CDS to enable/disable output.
40 second warm-up.
Quick check mode for installation.
Block Diagram
Figure 1 Block Diagram
OP2O
OP2N
OP2P
_
MODE
CDS
Mode and CDS
control circuit
Comparator
latch circuit
+
COMPO
CDSO
RSTB
Voltage
divider
OP1O
OP1P
OP1N
+
_
Control
circuit
Regulator
RELAY
TRIAC
Output
circuit
VEE
GND
Vcc
ZC
delay
oscillator
Delay
circuit
OSCD
System
oscillator
Frequency
divider
Zero cross
debounce
OSCS
12-07-0006
PT0192-3
07/06/12
1
PT8A2641-2642/2645-2648
PIR Sensor Light Switch
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Pin Configuration
GND
TRIAC
OSCD
OSCS
ZC
CDS
MODE
Vcc
OP2O
OP2N
OP2P
OP1O
OP1N
OP1P
RSTB
VEE
GND
RELAY
OSCD
OSCS
ZC
CDS
MODE
Vcc
OP2O
OP2N
OP2P
OP1O
OP1N
OP1P
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
RSTB
VEE
PT8A2641P/2641W
PT8A2642P/2642W
GND
TRIAC
OSCD
OSCS
ZC
CDS
MODE
Vcc
OP2O
OP2N
OP2P
OP1O
OP1N
OP1P
CDSO
VEE
GND
RELAY
OSCD
OSCS
ZC
CDS
MODE
Vcc
OP2O
OP2N
OP2P
OP1O
OP1N
OP1P
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CDSO
VEE
PT8A2645P/2645W
PT8A2646P/2646W
GND
TRIAC
OSCD
OSCS
ZC
CDS
MODE
Vcc
OP2O
OP2N
OP2P
OP1O
OP1N
OP1P
COMPO
VEE
GND
RELAY
OSCD
OSCS
ZC
CDS
MODE
Vcc
OP2O
OP2N
OP2P
OP1O
OP1N
OP1P
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
COMPO
VEE
PT8A2647P/2647W
PT8A2648P/2648W
12-07-0006
PT0192-3
07/06/12
2
PT8A2641-2642/2645-2648
PIR Sensor Light Switch
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Pin Description
Part number
Pin name I/O
Description
2641 2642 2645 2646 2647 2648
1
1
1
1
1
1
GND
I
Ground
RELAY drive output through an external NPN
transistor, active high
-
2
-
2
-
2
RELAY
O
TRIAC drive to output two negative pulses, active
negative pulse.
Output timing oscillator I/O
2
3
-
2
3
-
2
3
-
TRIAC
OSCD
O
3
3
3
I/O It is connected to an external RC to adjust output
duration.
System oscillator I/O OSCS is connected to an
I/O external RC to set the system frequency. The
system frequency =16KHz for normal application.
4
5
4
5
4
5
4
5
4
5
4
5
OSCS
ZC
I
Schmitt input for AC zero crossing detection
CDS is connected to a CDS voltage divider for
daytime/night auto-detection. Low input to this pin
can disable the PIR input. CDS is a schmitt trigger
input with 5-second input debounce time.
Operating mode selection input:
6
6
6
6
6
6
CDS
I
VCC: TRIAC/RELAY is always ON
7
7
7
7
7
7
MODE
I/O GND: TRIAC/RELAY is always OFF
Open: Auto detection, outputs 31.25Hz square
wave
8
9
8
9
8
9
8
9
8
9
8
9
Vcc
I
O
I
Positive power supply
Regulated voltage output The output voltage is
about 3.6V with respect to GND.
VEE
10
-
10
-
RSTB
CDSO
Chip reset input, active low
-
10
-
10
-
-
-
-
CDS control circuit output signal, active high
-
-
10
11
12
13
14
15
16
10
11
12
13
14
15
16
COMPO
OP1P
OP1N
OP1O
OP2P
output of comparator, active high
Noninverting input of OP1
Inverting input of OP1
Output of OP1
Noninverting input of OP2, internal 1.8V default.
Inverting input of OP2
-
-
11
12
13
14
15
16
11
12
13
14
15
16
11
12
13
14
15
16
11
12
13
14
15
16
I
I
O
I
I
O
OP2N
OP2O
Output of OP2
Note: The active output width of COMPO is inversely proportional to the system frequency.
12-07-0006
PT0192-3
07/06/12
3
PT8A2641-2642/2645-2648
PIR Sensor Light Switch
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Maximum Ratings
Note:
Storagetemperature----------------------- -------- ------ ---- -40°Cto+125°C
SupplyVoltagetoGrourdPotential(Input&VCC Only)----- -GND-0.5VtoVcc+0.5V
SupplyVoltagetoGrourdPotential(output&D/OOnly)--- --GND-0.5VtoVcc+0.5V
DCInputVoltage------------------------------------------- -0.5Vto+6.0V
DCOutputCurrent------------------------------------ -------------- 20mA
PowerDissipation -------------------------------------------------500mW
Stresses greater than those listed under
MAXIMUM RATINGS may cause permanent
damage to the device. This is a stress rating only
and functional operation of the device at these or
any other conditions above those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect
reliability.
Recommended Operating Conditions
Test Condition
Condition
Symbol
VCC
Parameter
Min.
4.75
0.8
-
Typ.
Max.
6.0
-
Unit
V
VCC
-
Operating Voltage
“H” Input Voltage
“L” Input Voltage
5.0
-
-
-
VIH
-
-
-
-
VCC
VCC
VIL
0.2
ROSCS=430K
COSCS=180P
FSYS
TA
System Oscillator Frequency
Operating temperature
5V
-
12.8
-20
16
25
19.2
70
KHz
°C
-
Electrical Characteristics
Test Condition
Symbol
Parameter
Min.
Typ.
Max.
Unit
VCC
5V
5V
5V
5V
5V
5V
5V
5V
Condition
VTH1
VTL1
VTH2
VTL2
VTH3
VTL3
VTH4
VTL4
CDS “H” Transfer Voltage
CDS “L” Transfer Voltage
ZC “H” Transfer Voltage
ZC “L” Transfer Voltage
OSCS “H” Transfer Voltage
OSCS “L” Transfer Voltage
OSCD “H” Transfer Voltage
OSCD “L” Transfer Voltage
High level leakage current
(ZC,CDS)
3.0
0.9
2.6
1.1
2.7
0.8
2.7
0.8
3.3
1.2
2.9
1.4
3
1
3
1
3.6
1.5
3.2
1.7
3.3
1.2
3.3
1.2
V
V
V
V
V
V
V
V
I IH
5V
VIH=4.5V
-1
1
-
A
Low level leakage current
(ZC,CDS)
RSTB Input high level current
Output source current(RELAY,
TRIAC)
I IL
5V
5V
5V
VIL=0.5V
VIH=4.5V
VOH=4.5V
-1
-1
1
-5
-
-
-
-
A
A
mA
I IHRSTB
IOH
–6
Output sink current(RELAY,
TRIAC)
Output source
Current(CDSO,COMPO)
Output sink
current(CDSO,COMPO)
IOL
IOH
IOL
5V
5V
5V
VOL=0.5V
VOH=4.5V
VOL=0.5V
15
–5
5
mA
mA
mA
-
-
-
-
-
-
12-07-0006
PT0192-3
07/06/12
4
PT8A2641-2642/2645-2648
PIR Sensor Light Switch
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Voltage regulation circuit
Test Condition
Condition
No load
Symbol
Parameter
Min.
Typ.
Max.
Unit
VCC
5V
VEE
OP2P
VO
Regulator Output Voltage
Noninverting input of OP2
Line regulation
3.24
3.6
1.8
30
3.96
1.98
50
V
V
5V
-
No load
1.62
-
-
mV
mV
4.5VCC5.5V, IL =1mA
0.5mA IL2mA
Load regulation
5V
60
100
VLDR
Operational amplifier and windows comparator
Symbol
Description
Test condition
Min
TYP
Max
Unit
BW
3dB band width
-
10
-
-
KHz
VH
VL
VCC=5V
VCC=5V
1.8
2.0
1.5
2.2
V
V
Threshold of windows
comparator
1.35
1.65
Frequency of oscillator and Timing of ZC and trigger output
Symbol
Description
Test condition
Min
Typ
Max
Unit
FMODE
Oscillator frequency/512
25
31.25
37.5
Hz
TDZT
TTPW
Delay time from ZC to TRIAC
TRIAC Pulse Width
1.16
50
1.45
62.5
1.74
75
ms
VCC=5V, RS=430K ,CS=180P
s
(PT8A264X)
Delay time from ZC rising edge
to Relay
TDZR
-
125
200
s
Power Dissipation
Symbol
Description
Power supply current
Test condition
Min
Typ
Max
Unit
VCC=5V, RS=430K ,CS=180P,
RD =2M, CD=104, other Input
Pins=GND, all outputs float.
ICC
-
120
200
A
12-07-0006
PT0192-3
07/06/12
5
PT8A2641-2642/2645-2648
PIR Sensor Light Switch
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Functional Description
VEE: supplies power to the analog front end circuit, it is about a stable 3.6V with respect to GND normally.
OSCS: a system oscillator input pin. System frequency of 16KHz can be generated when connecting to an external RC shows
as figure 2 (R=430K, C=180pf).
Figure 2 System oscillator
Figure 3 Output timing oscillator
TD= 23552 /FOSCD
VTH3
VTH4
RS
-
+
-
RD
-
+
-
430k
OSCS
+
+
+
+
OSCD
VTL3
VTL4
CS
+
CD
+
180P
PT8A264X
PT8A264X
OSCD: input pin of timing oscillator. It’s connected to an external RC to obtain the desired output timer. Variable output turn-
on duration can be achieved by selecting various values of RC or using a variable resistor, see figure 3.
Note: The minimum resistor should be low enough to 2K in order to provide adjustable range about 1000 times between min
and max timer (The maximum resistor is 3M). It is recommended that CD is more than 103 in order to guarantee not too bad
linearity.
RELAY (TRIAC): an output pin set as a RELAY driving (active high) output for the PT8A2642/6/8, or as a TRIAC driving
(active low) output for the PT8A2641/5/7. The output active duration is controlled by the OSCD oscillating period.
CDS and CDSO: CDS has a schmitt trigger input structure. It is used to distinguish lighteness. With a resistor divider
including a CDS component, if light is weak enough, CDS is high the PIR input is active. Oppositely, the CDSO will be
inactive when CDS is low. The input debounce time from inactive to active is 5 seconds. CDS should be pulled high without
using this function. The input of CDS will be ignored once the output is active.
CDS
LOW
HIGH
Status
Day Time
Night
CDSO
inactive
active
Figure 4 CDS input interface and enable debounce
RW
<5s
>5s
CDS
CDS
Photo
Resistor
CDSO enable
disable
enable
Figure 5 RSTB application example
RSTB: used to reset the chip. It is internal pull-high and active low.
The use of CRST can extend the power-on initial time. If the RSTB pin
is an open circuit (without CRST), the initial time is the default (40
secs).
VC
C
RES
T
RST
B
CRST
VSS
12-07-0006
PT0192-3
07/06/12
6
PT8A2641-2642/2645-2648
PIR Sensor Light Switch
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Power on initial: Because the band-pass filter and amplifier require a warm up period to reach a stable state after power-on so
any inputs should be ignored during this period.
In the AUTO mode within the first 10 seconds of power-on initialization, the system allows override control to access the
quickly install mode. However, after 40 seconds of the initial time the system allows override control between ON and AUTO.
It will remain in the warm up period if the total initial time has not elapsed after returning to AUTO.
In case that the ZC signal disappears more than 3 seconds, the chip will restart the initialization operation. However, the restart
initial time is always 40 seconds and cannot be extended by adding CRST to the RSTB pin as shown in Fig.5.
MODE: a tri-state input pin used to select the operating mode.
MODE
VCC
Operating Mode
Output always ON
Description
RELAY outputs high at ZC rising edge
TRIAC outputs negative pulse train with synchronizing to ZC
GND
Open
Output always OFF RELAY outputs low
TRIAC outputs high
AUTO
Outputs remain off state until activated by a valid PIR trigger signal. When working in
the AUTO mode, the chip allows override control by switching the ZC signal. MODE
outputs square wave with frequency of 31.25Hz.
ZC: a CMOS input structure. It receives AC line frequency and generates zero crossing pulses to synchronize the triac/relay
driver. With an effective ZC signal switching (switch OFF/ON 2 times within 3 seconds), the system provides the following
additional functions:
Quickly install mode: Within 10 seconds after power-on, effective ZC switching will force the chip to enter the quickly
install mode. During the mode, the outputs will be active for a duration of 1.3 seconds each time a valid PIR trigger signal
is received. If a time interval exceeds 32 seconds without a valid trigger input, the chip will enter the AUTO mode
automatically.
Figure 6 Test mode
10s
RSTB
40s warm up time
Test enable
ZC
<3s
COMPO
>0.34s
Relay
*
**
OFF
ON
1.3s
ON
1.3s
ON
1.3s
ON
1.3s
(Triac)
2s
2s
>32s
*&**:flash 3 times at 2Hz rate for 2641/5/7;for 2642/6/8,No flash
Override control: When the chip is working in the AUTO mode (MODE= open), the output is activated by a valid PIR trigger
signal and the active output duration is controlled by the OSCD oscillating period. The lamp can be switched always to “ON”
from the AUTO mode by either switching the MODE pin to VCC or switching the ZC signal by an OFF/ON operation of the
power switch (OFF/ON twice within 3 seconds). The term "override" refers to the change of operating mode by switching the
power switch. The chip can be toggled from ON to AUTO by an override operation. Shows as figure 7.
If the chip is overridden to ON and there is no further override operation, it will return to AUTO automatically after an
internal preset ON time duration has elapsed. This override ON time duration is set to 5 hours, refer to fig 7.
The PT8A2641/5/7 will flash on output pin when changing the operating mode. It will flash 3 times at a 1Hz rate each time
the chip changes from the AUTO mode to another mode or flash 3 times at a 2Hz rate when returning to the AUTO mode.
But
PT8A2642//6/8 does no flash at the same condition.
However, if the AUTO mode is changed by switching the MODE switch output will not flash.
12-07-0006
PT0192-3
07/06/12
7
PT8A2641-2642/2645-2648
PIR Sensor Light Switch
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Figure 7 ZC override timing
flash
flash
AUTO
flash
flash
AUTO
Operating
Mode
AUTO
ON
ON
5 hours
ZC
Any operations during flash period are inactive, the flash period is about 3s from AUTO to ON, 3s from ON to AUTO.
COMPO: COMPO is output from comparator, it can be output at pin 10 if needed. Signal from two-stage opamp outputs to a
window comparator as pre-operation, COMPO outputs active positive pulses with various width once signal beyond window
level. Whether an active PIR signal is detected, see trigger timming diagram below for detail.
Trigger timing
Figure 8 Trigger timing
RSTB
CDS
5s
CDSO
+trigger
level
OP2O
-trigger
level
>Tmt
mt
(Note1)
COMPO
<
T
(Note2)
Warm up 40s
Detect
Enable
Test
Enable
10s
ON
ON
RELAY
TRIAC
pulse out
(Note3)
Note: 1. One measurable trigger width (Tmt) from comparator output is 24ms~ 32ms which varies with frequency of system
oscillator (typical system frequency=16KHz ).
2. The output is activated if the trigger signal conforms to the following criteria:
A trigger signal sustain duration:0.34 seconds.
2 trigger signals within 2 seconds with one of the trigger signal sustain:0.16 seconds.
More than 3 measurable triggers within 2 seconds.
3. The output duration is set by an external RC that is connected to the OSCD pin.
Retrigger
If another signal is attained in trigger hold time, the circuit will be retriggered, and the trigger hold time will be started from
this time.
12-07-0006
PT0192-3
07/06/12
8
PT8A2641-2642/2645-2648
PIR Sensor Light Switch
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Timing Diagram
ZC
TDZR
RELAY
ZC
TDZT
TDZT
TRIAC
TTPW
7*TTPW
TTPW
Application Circuits
Typical application circuit of two wires PIR detector
SW1
ON/OFF OVERRIDE
C7
104
1M
R6
C3
180P
U2
VSS
1
2
3
4
5
6
16
15
14
13
12
11
10
9
C5
203
C6
OP2O
22UF/16V
VCC
TRIAC
OSCD
OSCS
ZC
OP2N
OP2P
OP1O
OP1N
R5
22K
15K
R15
R8
C9
10UF/16V
LAMP
C8
R7
2M
20~100W
104
C
120p
430K
R9
R4
1M
C2
203
2M
R2
D3
CDS
OP1P
CDSO
RSTB
COMPO
VEE
1N6263
OFF
AUTO
ON
2M
MODE7
SW2
1M
MODE
VDD
R11
C10
R12
22K
R14
VCC
8
R3
D5
D4
68/2W
Q1
1N4007
1N4148
R10
0.33U/630V
U1
56K
PT8A2641/5/7
C4
D
S
G
470UF/16V
C11
C12
22UF/16V
3
100UF/16V
TRIAC
R1
20K
R13
CDS
203 C13
D1
6.2V
C1
100UF/16V
D2
1N4007
AC 110V~230V
Note:
1. Adjust R10 to fit various CDS.
2. Change C7 to obtain the desired adjusting range of output duration.
3. Change the value of C10 to 0.22uf/630V for AC 220V application.
12-07-0006
PT0192-3
07/06/12
9
PT8A2641-2642/2645-2648
PIR Sensor Light Switch
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Typical application circuit of three wires PIR detector
LAMP
relay
15mA
20~100W
1M
R11
U2
C3
C6 180P
104
Q1
9014
C7
K1
D1
IN4001
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
C8
203
56K
VSS
OP2O
OP2N
OP2P
OP1O
OP1N
R14
22UF/16V
RELAY
OSCD
OSCS
ZC
R5
22K
R10 2M
VCC
R16
2K
C10
10UF/16V
R9
430K
R8
C2
203
R4
1M
360k
CDS
OP1P
CDSO
RSTB
COMPO
VEE
1M
R15
MODE
VDD
R3
D5
1N4007
R2
22K
nature
SW2
MODE
R6
C11
0.68U/400V
56K
C12
68/2W
PT8A2642/6/8
100UF/16V
R7
2.4M
C4
U1
D4
D2
24V
C1
22UF/16V
D
S
G
1N4148
R12
1K
VCC
D7
203
D3
R13
24V
5.6V
AC 110V~230V
SW1
ON/OFF OVERRIDE
live
D6
1N4007
R1
C5
C9
CDS
470UF/35V
330UF/16V
Note: 1.Adjust R13 to fit various CDS.
2.Change C6 to obtain the desired adjusting range of output duration.
3. RSTB pin need a capacitance 104 for PT8A2642 application
12-07-0006
PT0192-3
07/06/12
10
PT8A2641-2642/2645-2648
PIR Sensor Light Switch
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Mechanical Information
16-Pin DIP
PKG. DIMENSIONS(MM)
SYMBOL
Min
3.71
0.51
3.20
0.38
Max
4.31
A
A1
A2
B
3.60
0.57
B1
c
D
E
E1
e
1.52 BSC
0.20
18.80
6.20
7.32
0.36
19.20
6.60
7.92
2.54 BSC
Note:
L
3.00
8.40
3.60
9.00
1) Controlling dimensions in millimeters.
2) Ref: JEDEC MS-001D/BB
E2
12-07-0006
PT0192-3
07/06/12
11
PT8A2641-2642/2645-2648
PIR Sensor Light Switch
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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16-Pin SOIC
PKG. DIMENSIONS(MM)
SYMBOL
MIN
1.35
0.10
1.35
0.33
0.17
9.80
3.80
5.80
MAX
1.75
0.25
1.55
0.51
0.25
10.20
4.00
6.20
A
A1
A2
b
c
Note:
D
E
1) Controlling dimensions in millimeters.
2) Ref: JEDEC MS-012E/AC
E1
e
1.27 BSC
L
θ
0.40
0°
1.27
8°
12-07-0006
PT0192-3
07/06/12
12
PT8A2641-2642/2645-2648
PIR Sensor Light Switch
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Ordering Information
Part Number
Package code
Package
PT8A2641PE
P
W
P
Lead free 16-Pin DIP
Lead free 16-Pin SOIC
Lead free 16-Pin DIP
Lead free 16-Pin SOIC
Lead free 16-Pin DIP
Lead free 16-Pin SOIC
Lead free 16-Pin DIP
Lead free 16-Pin SOIC
Lead free 16-Pin DIP
Lead free 16-Pin SOIC
Lead free 16-Pin DIP
Lead free 16-Pin SOIC
PT8A2641WE
PT8A2642PE
PT8A2642WE
PT8A2645PE*
PT8A2645WE*
PT8A2646PE*
PT8A2646WE*
PT8A2647PE*
PT8A2647WE*
PT8A2648PE
W
P
W
P
W
P
W
P
PT8A2648WE
W
Note:
E = Pb-free and Green
Adding X Suffix= Tape/Reel
*Contact Pericom for availability.
Pericom Semiconductor Corporation 1-800-435-2336 www.pericom.com
Pericom reserves the right to make changes to its products or specifications at any time, without notice, in order to improve design or performance and to
supply the best possible product. Pericom does not assume any responsibility for use of any circuitry described other than the circuitry embodied in Pericom
product. The company makes no representations that circuitry described herein is free from patent infringement or other rights, of Pericom.
12-07-0006
PT0192-3
07/06/12
13
相关型号：
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