The CXSD2211 is a low power, low voltage photoelectric type smoke detector IC. With
minimal external components, this circuit will provide all the required features for a photoelectric-type
smoke detector.A check for a low battery condition is performed every 86 seconds, and chamber
integrity is tested once every 43 seconds, when in Standby. The temporal horn pattern supports the
NFPA 72 emergency evacuation signal
-
[ CXSD2211 ]"
目录
1.产品概述 2.产品特点 3.应用范围 4.技术规格书下载（PDF文档）
一.产品概述
The CXSD2211 is a low power, low voltage photoelectric type smoke detector IC. With
minimal external components, this circuit will provide all the required features for a photoelectric-type
smoke detector.A check for a low battery condition is performed every 86 seconds, and chamber
integrity is tested once every 43 seconds, when in Standby. The temporal horn pattern supports the
NFPA 72 emergency evacuation signal.
The CXSD2211 incorporates a gain-selectable photo amplifier for use with an infrared emitter/detector
pair.An internal oscillator strobes power to the smoke detection circuitry every 10 seconds, to keep the standby
current to a minimum. If smoke is sensed, the detection rate is increased to verify
an Alarm condition. A high gain mode is available for push button chamber testing.An internal 9 minute
timer can be used for a Reduced Sensitivity mode.An interconnect pin allows multiple detectors to be connected
such that, when one unit alarms, all units will sound.
the CXSD2211 was designed for use in smoke detectors that comply with Underwriters Laboratory
Specification UL217 and UL268
二.产品特点
Low Quiescent Current Consumption
Two AA Battery Operation
Internal Power On Reset
Local Alarm Memory
Internal Low Battery detector
Interconnect up to 40 Detectors
9 minute Timer for Sensitivity Control
Temporal or Continuous Horn Pattern
Low Battery and Chamber Test
Internal Infrared Emitter Diode (IRED) driver
Adjustable IRED Drive current
Adjustable Hush Sensitivity
Available in SOP16
三.应用范围
光电烟雾检测电路
四.技术规格书（产品PDF)
需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！
五.产品封装图
六.电路原理图
七.相关芯片选择指南
| 烟雾检测电路(Smoke Detector) | ||||||
| Part No. | Features | Hush | Output Signal | Standby Current | UL Certified | Package |
| CXSD2209 | Photoelectric Type With I/O | N/A | Continuous Alarm | 10μA | Pass | DIP16 SOP16 |
| CXSD2210 | Photoelectric Type With I/O | N/A | Temporal Alarm | 10μA | Pass | DIP16 SOP16 |
| CXSD2211 | Low Voltage Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode | Yes | Continuous /Temporal selectable | 1μA | SOP16 | |
