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