PT8A261 PERICOM | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 13
Technical content
Features
- 2-stage operational amplifier as filter Built-in noise rejection circuit On-chip regulator Override function Synchronous with AC 220V/50Hz and 110V/60Hz Pulse output (PT8A261) for TRIAC drive or level output (PT8A262) for relay drive CDS to enable/disable output Adjustable output on time duration ON/AUTO/OFF selectable by MODE pin Auto-reset if the ZC signal disappears over 3 seconds 40 seconds warm-up Quick check mode for initial installation Operating voltage: 5V Stand-by current: 80µA Package:16-pin DIP (261P/262P) and 16-pin SOP (261W/262W) General Description The PT8A261 and PT8A262 are low power mixed signal CMOS LSI designed for the automatic lamp control using PIR sensor as motion detector. With on chip noise filter and voltage regulator, the IC provides stable operations throughout temperature range. CDS input to disable day time operation is desired.
Applications
Energy saving auto-switch in Garden, kitchen, bathroom, corridor, storage or yard Auto light in meeting room Block Diagram Figure 1 OP2O OP2N OP2P OP1O OP1P OP1N OSCD OSCS ZC MODE CDS RST RELAY (for 262 only) TRIAC (for 261 only) Comparator latch circuit Mode and CDS control circuit Control circuit Voltage divider Regulator delay oscillator System oscillator Counter circuit Delay circuit Zero cross debounce Output circuit V EE
PIR Sensor Light Switch Controller PT0075(04/03) Ver:5 2 Pad Location Pad Location of PT8A261DE CDS ZC OSCS MODE VCC VEE RST VCC NC 1470um 1710um GND TRIAC OSCD OP2P OP2N OP2O OPIP OPIN OPIO Die No. Pad Coordinate Pad Name X Coordinate Y Coordinate Pad Name X Coordinate Y Coordinate GND 570 65.4 NC 570 -268.6 TRIAC 570 -101.6 VEE -570 232.4 OSCD 570 399.4 RST 303.9 -687.2 OSCS 570 232.4 OP1P -44.8 689.2 ZC -378.8 689.2 OP1N -211.8 689.2 CDS -30.1 -687.2 OP1O -570 -435.6 MODE 570 -435.6 OP2P -570 -268.6 VCC -197.1 -687.2 OP2N -570 -101.6 VCC 136.9 -687.2 OP2O -570 65.4 Note: Substrate is connected to GND
PIR Sensor Light Switch Controller PT0075(04/03) Ver:5 3 Pad Location of PT8A262DE Pad Coordinate Pad Name X Coordinate Y Coordinate Pad Name X Coordinate Y Coordinate GND 570 65.4 NC 570 -268.6 RELAY 570 -101.6 VEE -570 232.4 OSCD 570 399.4 RST 303.9 -687.2 OSCS 570 232.4 OP1P -44.8 689.2 ZC -378.8 689.2 OP1N -211.8 689.2 CDS -30.1 -687.2 OP1O -570 -435.6 MODE 570 -435.6 OP2P -570 -268.6 VCC -197.1 -687.2 OP2N -570 -101.6 VCC 136.9 -687.2 OP2O -570 65.4 Note: Substrate is connected to GND CDS ZC OSCS MODE VCC VEE RST VCC NC 1470um 1710um GND RELAY OSCD OP2P OP2N OP2O OPIP OPIN OPIO Die No.
PIR Sensor Light Switch Controller PT0075(04/03) Ver:5 4 Pin Assignment Figure 2 Pin Description Table 1 Pin/Pad Name Type Description 261 262 1 1 GND Ground Ground
2 RELAY O RELAY drive output through an external NPN transistor, active high
2 TRIAC O TRIAC drive two-pulse output, active negative pulse. 3 3 OSCD I/O Output timing oscillator I/O, connected to an external RC to adjust output duration. 4 4 OSCS I/O System oscillator I/O, connected to an external RC to set the system frequency. The system frequency = 16kHz for normal application. 5 5 ZC I Schmitt input for AC zero crossing detection. 6 6 CDS I Connected to a CDS voltage divider for daytime/night auto-detection. Low input to this pin can disable PIR input. CDS is a schmitt trigger input with 5-second input debounce time. 7 7 MODE I Mode select, connecting to VCC- output always on, connection GND - output always off, open - auto detection 8 8 VCC Power Power supply 9 9 VEE O Internal voltage regulator output, 3.6V with respect to ground. Connected to the drain of PIR sensor 10 10 RST I Chip reset input, active low, kept floating or connected an RC network 11 11 OP1P I Non-inverted input of first operational amplifier, connected directly to source of PIR sensor 12 12 OP1N I Inverted input of first operational amplifier 13 13 OP1O O Output of first operational amplifier 14 14 OP2P I Non-inverted input of second operational amplifier. 15 15 OP2N I Inverted input of second operational amplifier 16 16 OP2O O Output of second operational amplifier PT8A261P/PT8A261W GND TRIAC OSCD OSCS ZC MODE VCC OP2O OP2N OP2P OP1O OP1N OP1P RST V EE CDS Top view PT8A262P/PT8A262W GND RELAY OSCD OSCS ZC MODE VCC OP2O OP2N OP2P OP1O OP1N OP1P RST V EE CDS Top view
on. The input should be disabled during this period. RST to the RST pin as shown in Figure 6. The trigger timing is shown in Figure 9. Figure 9. Trigger Timing
- 2 triggers within 2 seconds with pulse duration of one > 0.16 seconds.
- The output duration is set by an external RC connected to the OSCD pin.
PIR Sensor Light Switch Controller PT0075(04/03) Ver:5 8 Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested) Supply Voltage to Ground Potential (Outputs & D/O Only)-0.3 to +6.0V Note: 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 condi- tions above those indicated in the operational sec- tions of this specification is not implied. Exposure to absolute maximum rating conditions for ex- tended periods may affect reliability. Sym Description Min Typ Max Units V CC Supply Voltage 4.75 5.0 6.0 V VIH Input HIGH Voltage (MODE,RST) 0.8VCC - - V VIL Input LOW Voltage (MODE,RST) - - 0.2VCC V fSYS System Oscillator Frequency 12.8 16 19.2 kHz fDOSC Delay Oscillator Frequency 12.8 16 19.2 kHz TA Operation Temperature -25 25 70 OC Recommended Operation Conditions Sym Description Test Conditions Min Typ Max Units IIH Input high level leakage current(ZC,CDS) VIH = 4.5V -0.1 - 0.1 µΑ IIL Input low level leakage current(ZC,CDS) VIL = 0.5V -0.1 - 0.1 µΑ IOH Output Source Current (RELAY, TRIAC) VOH = 4.5V -6 - - mA IOL Output Sink Current (RELAY, TRIAC) VOL = 0.5V 15 - - mA VTH1 CDS Transfer High Voltage 3.0 3.2 3.6 V VTL1 CDS Transfer Low Voltage 1.5 1.7 2.1 V VTH2 ZC Transfer High Voltage 2.6 2.9 3.2 V VTL2 ZC Transfer Low Voltage 1.0 1.4 1.6 V VTH3 OSCS Transfer High Voltage 2.2 2.4 2.8 V VTL3 OSCS Transfer Low Voltage 1.0 1.4 1.6 V VTH4 OSCD Transfer High Voltage 2.2 2.4 2.8 V VTL4 OSCD Transfer Low Voltage 0.4 0.6 0.8 V Note: These specifications apply for V CC = 5.0V and -25OC ≤ TA ≤ 70OC, unless otherwise specified.
PIR Sensor Light Switch Controller PT0075(04/03) Ver:5 9 Sym Description Test Conditions Min Typ Max Units VEE Output Voltage No load 3.2 3.6 4.0 V VOP2P Noninverting input of OP2 No load 1.6 1.8 2.0 V ΔVΟ Line Regulation 4.5V ≤ VCC ≤ 5.5V, IL = 1mA - 30 50 mV ΔVLDR Load Regulation VCC = 5V, 0.5mA ≤ IL ≤ 2mA - 60 100 mV IL Regulator Output Current VCC = 5V 4 - - mA Voltage Regulator Operational Amplifier and Window Comparator Sym Description Test Conditions Min Typ Max Units BW 3dB Bandwidth - 10 - - kHz VTH Windows Comparator Threshold VCC = 5V 1.9 2.05 2.2 V VTL VCC = 5V 1.4 1.55 1.7 V
Figure 10. Timing Diagram
Figure 11. Two-Wire Application Circuit of PT8A261
Figure 12. Three-Wire Application Circuit of PT8A262
PIR Sensor Light Switch Controller PT0075(04/03) Ver:5 13 Notes Pericom Technology Inc. China: No. 20 Building, 3/F, 481 Guiping Road, Shanghai, 200233, China Tel: (86)-21-6485 0576 Fax: (86)-21-6485 2181 Asia Pacific: Unit 1517, 15/F, Chevalier Commercial Centre, 8 Wang Hoi Rd, Kowloon Bay, Hongkong Tel: (852)-2243 3660 Fax: (852)- 2243 3667 U.S.A.: 2380 Bering Drive, San Jose, California 95131, USA Tel: (1)-408-435 0800 Fax: (1)-408-435 1100 Pericom Technology Incorporation 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 Technology does not assume any responsibility for use of any circuitry described other than the circuitry embodied in Pericom Technology product. The company makes no representations that circuitry described herein is free from patent infringement or other rights, of Pericom Technology Incorporation.