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| 型号： | MC145012EG |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 3/14页 |
| 文件大小： | 0K |
| 描述： | IC SMOKE DETECT PHOTOELEC 16SOIC |
| 标准包装： | 47 |
| 类型： | 烟雾探测器 |
| 输入类型： | 光电 |
| 输出类型： | 电压 |
| 电流 - 电源： | 8µA |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 管件 |
Sensors
Freescale Semiconductor
11
MC145012
CALIBRATION
To facilitate checking the sensitivity and calibrating smoke
detectors, the MC145012 can be placed in a calibration
mode. In this mode, certain device pins are controlled/
reconfigured as shown in Table 5. To place the part in the
calibration mode, Pin 16 (Test) must be pulled below the VSS
pin with 100
A continuously drawn out of the pin for at least
one cycle on the OSC pin. To exit this mode, the Test pin is
floated for at least one OSC cycle.
In the calibration mode, the IRED pulse rate is increased
to one for every OSC cycle. Also, Strobe is always active low.
Figure 9. Recommended PCB Layout
Table 5. Configuration of Pins in the Calibration Mode
Description
Pin
Comment
I/O
7
Disabled as an output. Forcing this pin high places the photo amp output on Pin 1 or 2, as determined by Low-
Supply Trip. The amp's output appears as pulses and is referenced to VDD etc.
Low-Supply Trip
15
If the I/O pin is high, Pin 15 controls which gain capacitor is used. Low: normal gain, amp output on Pin 1. High:
supervisory gain, amp output on Pin 2.
Feedback
10
Driving this input high enables hysteresis (10% gain increase) in the photo amp; Pin 15 must be low.
OSC
12
Driving this input high brings the internal clock high. Driving the input low brings the internal clock low. If
desired, the RC network for the oscillator may be left intact; this allows the oscillator to run similar to the normal
mode of operation.
Silver
9
This pin becomes the smoke comparator output. When the OSC pin is toggling, positive pulses indicate that
smoke has been detected. A static low level indicates no smoke.
Brass
8
This pin becomes the smoke integrator output. That is, 2 consecutive smoke detections are required for “on”
(static high level) and 2 consecutive no-detections for “off” (static low level).
NOTES: Illustration is bottom view of layout using a DIP. Top view for SOIC layout is mirror image.
Optional potentiometer R9 is not included.
Drawing is not to scale.
Leads on D2, R11, R8, and R10 and their associated traces must be kept as short as possible. This practice minimizes noise
pick up.
Pin 3 must be decoupled from all other traces.
Do Not Run Any
Additional Traces
In This Region
PIN 8
Pin 16
Pin 9
Pin 1
R8
R11
D2
C2
R14
C1
R10
0
MOUNTED IN
CHAMBER
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| MC145012EGR2 | 功能描述:光电传感器 PHOTO SMKE DET/NFPA TONE RoHS:否 制造商:Omron Industrial 感应方式:Retroreflective 感应距离:2 m 光源:Infrared LED 放大器类型: 连接:Prewired Cable 输出配置:Light ON |
| MC145012P | 功能描述:IC SMOKE DETECTOR WITH I/O 16DIP RoHS:否 类别:集成电路 (IC) >> 接口 - 传感器和探测器接口 系列:- 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:74 系列:- 类型:触控式传感器 输入类型:数字 输出类型:数字 接口:JTAG，串行 电流 - 电源:100µA 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:管件 |
| MC145017P | 功能描述:IC SMOKE DETECT PHOTOELEC 16-DIP RoHS:否 类别:集成电路 (IC) >> 接口 - 传感器和探测器接口 系列:- 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:74 系列:- 类型:触控式传感器 输入类型:数字 输出类型:数字 接口:JTAG，串行 电流 - 电源:100µA 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:管件 |
| MC145018P | 功能描述:IC SMOKE DETECT PHOTOELEC 16-DIP RoHS:否 类别:集成电路 (IC) >> 接口 - 传感器和探测器接口 系列:- 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:74 系列:- 类型:触控式传感器 输入类型:数字 输出类型:数字 接口:JTAG，串行 电流 - 电源:100µA 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:管件 |
| MC145026D | 功能描述:锁相环 - PLL Encoder RoHS:否 制造商:Silicon Labs 类型:PLL Clock Multiplier 电路数量:1 最大输入频率:710 MHz 最小输入频率:0.002 MHz 输出频率范围:0.002 MHz to 808 MHz 电源电压-最大:3.63 V 电源电压-最小:1.71 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:QFN-36 封装:Tray |
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