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參數(shù)資料
| 型號： | BL59A12 |
| 廠商： | 上海貝嶺股份有限公司 |
| 英文描述： | PHOTOELECTRIC SMOKE DETECTOR IC |
| 中文描述： | 光電感煙探測器芯片 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大小： | 282K |
| 代理商： | BL59A12 |
BL59A12/BL59S12
http://www.belling.com.cn
- 6 -
8/28/2006
Wrote by 2006
Total
8 Pages
8.Application sample figure
R11
250K
D2
R7
10
0
R6
47
K
R14
6.8K
VDD
VDD
VDD
R1
100K
R2
7.5M
C3
VDD
Q1
IR
R8*
6.
8k
R10*
4.
7
R12
1k
C5
100uF
R13*
4.7to22
VDD
TEST
BT1
9V
VDD
R4*
100K
R5*
2.2M
A
D4
Visible
R3
470
1
2
3
com
A
IR
D3
D1
R9*
5k
C1
47n
C2
4.7n
U2
BUZZE
C1
1
C2
2
Detect
3
Strobe
4
Vdd
5
IRED
6
Ｉ／Ｏ
7
Brass
8
SILVER
9
Freedback
10
LED
11
Osc
12
R1
13
Vss
14
LowSupplyTrip
15
Test
16
C6
0.01uf
1500pf
C4
47uF
9. Calibration:
To enter calibration mode, pin16 (TEST) must be below VSS, pulling more than 100uA
continuously out of the pin for at least one OSC cycle. To exit this mode, the TEST pin is floated
at least one OSC cycle.
Table. Configuration of pins in the calibration mode
Description PIN
Forcing this pin = VDD, places photo amp’s output on pin2 when pin15=
VDD, or on pin1 when pin15= VSS.
Low:
normal gain of photo amplifier on pin1.
High
: supervisory gain on pin2.
When pin15=low, driving it high enables gain with a hysteresis in the
photo amp.
OSC
12
It equals to internal clock.
This pin becomes smoke comparator’s output. Positive pulses indicate
that smoke has been detected. A static low level indicates no smoke.
This pin becomes the smoke integrator’s output. Static high level means
two consecutive smoke detections. Static low level means two
no-detections.
Comments
I/O
7
Low-supply
15
Feedback
10
Silver
9
Brass
8
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