BL59A10 반도체 회로 부품 판매점
(BL59A10 / BL59S10) PHOTOELECTRIC SMOKE DETECTOR IC
|
|
 SHANGHAI BELLING |
www.DataSheet4U.com
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
DETECT 3
C1 C2
12
AMP
REF1
COMP
I/O
7
ALARM
LOGIC
8
9
10
BRASS
SILVER
FEEDBACK
0SC
R1
TEST
12
13
16
STROBE
LOW-SUPPLY
TIMING
LOGIC
7
15
REF2
COMP
6 IRED
11 LED
PIN5=Vdd
PIN14=Vss
4. Pin assignment
C1
C2
Detect
Strobe
Vdd
IRED
I/O
Brass
1
2
3
4
5
6
7
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
BL59A10/BL59S10
5.Pin description
Pin
No.
Symbol
1,2 C1, C2
3 DETECT
4 STROBE
5,14 VDD, GND
6 IRED
7 I/O
8,9
BRASS,
SILVER
10 FEEDBACK
11 LED
12 OSC
13 R1
15 LOW-SUPPLY
16 TEST
Input/output Functions
By connecting external capacitor, a
External capacitor voltage feedback amplifier is formed.
connection
The gain of it is determined by
capacitor’s value.
I
Detecting input
Connect a photodiode to supply a
signal to the internal comparator.
A strobe voltage output, referenced to
O Strobe
VDD.
When output = VDD -5V, it enables
other internal circuits.
Power supply
To supply the power
To output pulse drive signal for external
O
Output signal
NPN transistor which drives a IR
photodiode.
It can be used to connect up to 40
Input/output
detectors to make auxiliary alarm,
remote alarm, auto-dialer…
O
Push-pull
output
driver’s
Push-pull driver outputs signal to drive
external buzzer to alarm, and to show
various operation states.
I
Feedback terminal
To feed ‘silver’ signal back to the
push-pull output driver circuit’s input
It is an open drain output, can drive
O
Output signal
LED directly. The LED can tell the
detector’s various operation states.
Connected to external R and C, which
I Oscillator’s input determine the internal oscillator’s
frequency.
External R and C Connected to external R and C, which
connecting
determine the output pulse period of
terminal
IRED.
I
Low voltage
detecting input
It connected to external resistor divider
between VDD and LED to get a low
supply alarm threshold voltage
This pin is normally low by an internal
pull-down device. When it is set high,
I
Test terminal
the IC enters into a simulated-smoke
condition. When floating, this pin
comes back to VSS (low) by pull-down
device.
6. Function of this IC:
6.1. The variable gain photoelectric amplifier is directly connected to IR detector (photodiode).
The amplifier’s gain is determined by external capacitors C1 and C2. During standby, the
amplifier’s gain is at minimum. Under smoke condition, the amplifier’s gain is at medium.
Entering into test condition, the amplifier’s gain is at maximum. Additionally, under standby
state, if the special supervisory circuit is activated to check the chamber’s sensitivity, the
amplifier’s gain is also at its maximum.
6.2. Using VSS as its reference, the I/O pin can be used to connect up to 40 units together.
When I/O pin is used as an input, its on-chip pull-down resistor can prevent noise from entering
http://www.belling.com.cn
-2-
Total 8 Pages
8/28/2006
Wrote by 2006
|
PDF 파일 내의 페이지 : 총 8 페이지
제조업체: SHANGHAI BELLING
( shanghai )
BL59A10 detector
데이터시트 다운로드 :
[ BL59A10.PDF ]
[ BL59A10 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
관련 데이터시트
BL59A10
(BL59A10 / BL59S10) PHOTOELECTRIC SMOKE DETECTOR IC - SHANGHAI BELLING
BL59A12
(BL59A12 / BL59S12) PHOTOELECTRIC SMOKE DETECTOR IC - SHANGHAI BELLING
BL59A18
Ionic smoke detector - SHANGHAI BELLING