PT Pericom Technology Inc. Preliminary Data Sheet PT8A260P Mixed-Signal Analog Base ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Features PT8A260P is packaged in 16-pin PDIP. The outputs from op amps, comparator, voltage reference, • 2 independent high gain op amps oscillator, noise rejection circuit and low battery • On-chip window comparator detector are provided. • On-chip voltage reference (3.6V) • Internal 16kHz oscillator 1,500 gates of digital gate are also available inside • Low battery detector PT8A260P. Once customers verify their mixed-mode • Built-in noise rejection circuit for PIR sensor application/system, a single chip solution can be applications integrated by PTI’s factory within 8 weeks after sign • 16-pin DIP package off. General Description Applications PT8A260P is a mixed-signal base chip consists of 2 • PIR sensor controller high gain front end amplifier, window comparators, • Special sensor control voltage reference, oscillator and low battery detector. • Mixed-signal ASIC with analog front end All the analog modules are well proven and fully characterized. With another external digital ASIC such as FPGA, customers can verify their mixed-signal system faster and with minimum risk. Block Diagram Figure 1 V C C GND VE E Voltage Regulator RST OSC VH VL 1/2V E E Voltage Divider 1,500 gates logic Reset TE V_TRIG Noise Rejection Clock divider Oscillator CLKO 1/2V E E + - TRIG VH + + - + + VL OP1P OP1N PT0083(11/01) OP1O OP2P OP2N Low Battery Detector LB V EE OP2O 1 Ver:0 PT Pericom Technology Inc. Preliminary Data Sheet PT8A260P Mixed-Signal Analog Base ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Pin Assignment Figure 2 PT8A260P GND CLKO OSC V_TRIG TRIG LB TE VCC 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 OP2O OP2N OP2P OP1O OP1N OP1P RST VEE Top view Pin Description Table 1 P in Na me 1 GND 2 CLKO O Output from oscillator 3 OSC I Input of oscillator, external resistor or capacitor changeable, resistor pull down, capacitor pull up, 16kHz for normal application 4 V_TRIG O Output from noise rejection circuit (active low) 5 TRIG O Output from window comparator (active low) 6 LB O Output from low battery detector (active high) 7 TE I Input to enable noise rejection circuit to trigger (active low) 8 VCC Power 9 VEE O Internal voltage regulator output, 3.6V with respect to ground. Connected to the drain of PIR sensor 10 RST I Chip reset input, active low 11 OP1P I Non-inverted input of first operational amplifier, connected directly to source of PIR sensor 12 OP1N I Inverted input of first operational amplifier 13 OP1O O Output of first operational amplifier 14 OP2P I Non-inverted input of second operational amplifier. 15 OP2N I Inverted input of second operational amplifier 16 OP2O O Output of second operational amplifier PT0083(11/01) Typ e Descr ip t ion Ground Ground Power supply 2 Ver:0 PT Pericom Technology Inc. Preliminary Data Sheet PT8A260P Mixed-Signal Analog Base ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Notes Pericom Technology Inc. Email: [email protected] Web Site: www.pti.com.cn 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. PT0083(11/01) 3 Ver:0