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BL59A66

BELLING
Part Number BL59A66
Manufacturer BELLING
Description Smoke Detector
Published Jul 20, 2015
Detailed Description BL59A66 datasheet 1. Introduction: The BL59A66 is a low-current BiCMOS circuit providing all of the features for a photo...
Datasheet PDF File BL59A66 PDF File

BL59A66
BL59A66

Overview
BL59A66 datasheet 1.
Introduction: The BL59A66 is a low-current BiCMOS circuit providing all of the features for a photoelectric type smoke detector.
BL59A66 can be used in conjunction with an infrared photoelectric chamber to sense scattered light from smoke particles.
Special features are incorporated in the design to facilitate calibration and testing of the finished detector.
2.
1 Applied Area: Photoelectric Type Smoke Detector System。 2.
2 Features: 2.
2.
1 6 V to 12 V Operating Voltage Range 2.
2.
2 Internal Timer & Control for Reduced Sensitivity 2.
2.
3 Supply Voltage current：0~10uA 2.
2.
4 Operating Temperature Range：－25～75℃ 2.
2.
5 Power-ON Reset 2.
2.
6 ESD and Latch-up Protection Circuitry on All Pins 2.
2.
7 Piezoelectric Horn Driver 2.
2.
8 Interconnect Up to 50 Detectors 2.
2.
9 Continuous Modulated Tone Output For a Local or Remote Alarm Condition 2.
3 FUNCTIONAL BLOCK DIAGRAM 2.
4 Pin Description 2.
5 Pin function Pin No.
Pin symbol 1 ,2 C1 , C2 3 DETECT 4 STROBE 5 ,14 Vdd , VSS Input/O utput Input Output Function Description Exterior capacitor connected to the pins Input to the photo amplifier Regulated voltage Output Power/Gnd A capacitor connected to the pins determines the gain of the photo amplifier.
This pin connects the cathode of the photo diode.
The photo diode is operated at zero bias.
The pin is the Regulated voltage Output.
The value is Vdd-5V.
Power supply 6 IRED Output 7 I/O 8 ,9 BRASS, Output SILVER 10 FEEDBACK Inuput 11 LED Output 12 OSC 13 R1 15 LS SET Input Intput 16 TEST Input 3.
Circuit characteristic: Signal output Piezoelectric Transducer Output Piezoelectric Transducer Input Signal output OSC Input Exterior capacitor and resistor connected to the pins Low sensitive set Test Input This pin is a output, which provides a pulsed base current for the external npn transistor, which drives the IR emitter.
A connection at this pin allows multiple smoke detectors (less than 50) to be interconnected.
These TWO pins are used in conjunc...


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