BL59A10 Datasheet, PDF (1/8 Pages) SHANGHAI BELLING CO., LTD. – PHOTOELECTRIC SMOKE DETECTOR IC

BL59A10/BL59S10
PHOTOELECTRIC SMOKE DETECTOR IC
1. Product description
1.1. Basic function:
BL59A10/BL59S10 is a CMOS LSI used for smoke detection. Ultra-low power analog and
digital circuits are contained in it. Combined with an IR photoelectric chamber, this IC is used to
detect smoke through receiving light scattered by tiny smoke particles going into the chamber.
When smoke is detected, A burst of alarm sounds are generated by an external piezoelectric
buzzer driven by the push-pull output of this IC.
1.2. Applications:
Smoke detection system.
2. Features:
Power supply range:
6V ～ 12V
Average supply current: 12uA
Operating temperature range: -10 ～ 60℃
Ideal for battery powered applications.
3. Block diagram of this IC
C1 C2
12
DETECT ³
AMP
COMP
REF1
I/O
7
ALARM
LOGIC
8
9
10
BRASS
SILVER
FEEDBACK
0SC ¹²
R1 ¹³
TEST ¹⁶
TIMING
LOGIC
STROBE
7
LOW-SUPPLY ¹⁵
REF2
COMP
6
IRED
11 _LED
PIN5=Vdd
PIN14=Vss
4. Pin assignment
C1 1
C2 2
Detect 3
Strobe 4
Vdd 5
IRED 6
I/O 7
Brass 8
16 Test
15 Low-Supply
14 Vss
13 R1
12 Osc
11 LED
10 Feedback
9 Silver
http://www.belling.com.cn
-1-
Total 8 Pages
8/28/2006
Wrote by 2006