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PT8A2621DE Datasheet(PDF) 4 Page - Pericom Semiconductor Corporation |
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PT8A2621DE Datasheet(HTML) 4 Page - Pericom Semiconductor Corporation |
4 / 13 page Data Sheet PT8A2611/2621 PIR Sensor Light Switch Controller PT0091(04/03) Ver:3 4 ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Pin Assignment Pin Description Pin Name Type Description 2611 2621 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 V CC - output always on, connection GND - output always off, open - auto detection 8 8 V CC Power Power supply 9 9 V EE 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 PT8A2611P/PT8A2611W GND TRIAC 1 OSCD OSCS ZC MODE V CC OP2O OP2N OP2P OP1O OP1N OP1P RST V EE CDS 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 Top view PT8A2621P/PT8A2621W GND RELAY 1 OSCD OSCS ZC MODE V CC OP2O OP2N OP2P OP1O OP1N OP1P RST V EE CDS 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 Top view |
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