- 您现在的位置：买卖IC网 > PDF目录181332 > MC145011DW (FREESCALE SEMICONDUCTOR INC) SPECIALTY ANALOG CIRCUIT, PDSO16 PDF资料下载
参数资料
| 型号： | MC145011DW |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封装： | PLASTIC, SOIC-16 |
| 文件页数： | 2/12页 |
| 文件大小： | 346K |
| 代理商： | MC145011DW |
Sensors
10
Freescale Semiconductor
MC145011
CALIBRATION
To facilitate checking the sensitivity and calibrating smoke
detectors, the MC145011 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
Pin
Description
Comment
7
I/O
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.
15
Low-Supply Trip
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.
10
Feedback
Driving this input high enables hysteresis (10% gain increase) in the photo amp; pin 15 must be low.
12
Osc
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.
9
Silver
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.
8
Brass
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 D1, 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.
Pin 8
Pin 16
Pin 9
Pin 1
C1
R11
D2
R8
MOUNTED IN
CHAMBER
C2
R1
0
Do Not Run Any
Additional Traces
In This Region
C2
R14
相关PDF资料 |
PDF描述 |
|---|---|
| MC2850-13-1 | 0.1 A, 2 ELEMENT, SILICON, SIGNAL DIODE |
| MC33269DT-5 | 5 V FIXED POSITIVE LDO REGULATOR, 1.35 V DROPOUT, PSSO2 |
| MC33269D-5 | 5 V FIXED POSITIVE LDO REGULATOR, 1.35 V DROPOUT, PDSO8 |
| MC33269ST-5 | 5 V FIXED POSITIVE LDO REGULATOR, 1.35 V DROPOUT, PDSO4 |
| MC3346P | 5 CHANNEL, Si, NPN, RF POWER TRANSISTOR |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC145011ED | 功能描述:光电传感器 SMOKE DETECTOR 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 |
| MC145011P | 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 |
| MC145012DW | 功能描述:IC SMOKE DETECT WITH I/O 16SOIC 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 |
| MC145012DWR2 | 制造商:Rochester Electronics LLC 功能描述:PHOTO SMKE DET/NFPA TONE - Bulk 制造商:Motorola Inc 功能描述: 制造商:MOTOROLA 功能描述: |
| MC145012ED | 功能描述:烟雾报警器 SM DETECTOR W/NFPA TONE RoHS:否 制造商:ELMOS Semiconductor 描述/功能:Smoke detector controller 感应方式:Photoelectric 工作电源电压:24 V 输出信号类型: |
发布紧急采购，3分钟左右您将得到回复。