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PDF BL59A12 Data sheet ( Hoja de datos )

Número de pieza BL59A12
Descripción (BL59A12 / BL59S12) PHOTOELECTRIC SMOKE DETECTOR IC
Fabricantes SHANGHAI BELLING 
Logotipo SHANGHAI BELLING Logotipo



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No Preview Available ! BL59A12 Hoja de datos, Descripción, Manual

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BL59A12/BL59S12
PHOTOELECTRIC SMOKE DETECTOR IC
1. Product description
1.1 Basic function:
BL59A12 (BL59S12) 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: 8uA
Operating temperature range: -10 60
Ideal for battery powered applications.
3. Block diagram of this IC
4.Pin assignment
http://www.belling.com.cn
-1-
Total 8 Pages
8/28/2006
Wrote by 2006

1 page




BL59A12 pdf
BL59A12/BL59S12
Width
tr IRED Rise Time
--
30 us
tf IRED Fail Time
ton Silver and Brass
toff Temporal
toffd Modulation Pulse
tCH
Silver and Brass
Chirp Pulse
Period
Low Supply or
Degraded
Chamber
Sensitivity
--
200
64
0.45 0.5 0.55
0.45 0.5 0.55
192 1.35 1.52 1.65
4096 28.8 32.4 35.2
us
s
s
Silver and Brass
twCH Chirp Pulse
Width
1 7.0 7.9 8.6 ms
Rising Edge on
tRR
I/O to Smoke
Remote Smoke,
Alarm Response No Local Smoke
-
- 2! - ms
Time
Smoke Test
1024 7.2 8.1 8.8
Chamber
Sensitivity Test,
without Local
4096 28.8 32.4 35.2
tstb
Strobe Out Pulse Smoke
Period
Low Supply Test,
s
Without Local 4096 28.8 32.4 35.2
Smoke
Pushbutton Test
-
-1-
*Oscillator period T (= Tr + Tf) is determined by the external components R1, R2, and C3 where
Tr = (0.6931) R2 * C3 and Tf = (0.6931) R1 * C3.
The other timing characteristics are some multiple of the oscillator timing as shown in the table.
**Typicals are not guaranteed.
Time is typical - depends on what point in cycle signal is applied.
http://www.belling.com.cn
-5-
Total 8 Pages
8/28/2006
Wrote by 2006

5 Page










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