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參數(shù)資料
| 型號： | MCZ145017EG |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | Low-Power CMOS Ionization Smoke Detector IC with Temporal Pattern Horn Driver |
| 中文描述： | 低功耗CMOS離子感煙探測器集成電路時(shí)間模式喇叭驅(qū)動 |
| 文件頁數(shù)： | 5/10頁 |
| 文件大?。?/td> | 178K |
| 代理商： | MCZ145017EG |
Sensors
Freescale Semiconductor
5
MC145017
battery, respectively. Pin 1 = V
DD
for smoke and Pin 4 = VDD
for low battery. In this mode and during the 10 ms power
strobe, chip current rises to approximately 50
μ
A.
Led Pulse
The 9-volt battery level is checked every 40 seconds
during the LED pulse. The battery is loaded via a 10 mA
pulse for 11.6 ms. If the LED is not used, it should be replaced
with an equivalent resistor such that the battery loading
remains at 10 mA.
Hysteresis
When smoke is detected, the resistor/divider network that
sets sensitivity is altered to increase sensitivity. This yields
approximately 100 mV of hysteresis and reduces false
triggering.
Figure 6. Typical Application as Ionization Smoke Detector
Figure 7. MC145017 Timing Diagram
MC145017
1
16
2
3
4
5
6
7
8
15
14
13
12
11
10
9
330
8.2 M
+
9 V
0.1
μ
F
1.5 M
*
0.001
μ
F
220 k
*
0.1
μ
F
1 M
1 M
Test
*NOTE: Component values may change depending on type of piezoelectric horn used.
OSC
Pin 12
Smoke - N
- Y
Low Bat - Y
- N
HYST
Pin 13
HORN - On
- Off
LED - Off
- On
2
3
4
5
6
7
9
8
1
No Smk
No Low Bat
LOW BATTERY CHIRP
OSC
Pin 12
Smoke - N
- Y
No Smk
23
24 1
6
12
18
24
Smoke
Latch AlarmCondition
( 100 mV Level Shift)
NFPA MOD
LOW BAT - Y
- N
HORN - ON
- OFF
LED - OFF
- ON
(Note 1)
24 Clocks
24 Clocks
No Smoke, Low Battery
>>
>>
>
NOTES:
1. Horn modulation is self-completing. When going fromsmoke to no smoke, the alarmcondition will termnate only when horn is off.
2. Comparators are strobed once per cycle (1.65 sec for no smoke, 40 msec for smoke).
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| MCZ145017EGR2 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Low-Power CMOS Ionization Smoke Detector IC with Temporal Pattern Horn Driver |
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