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A5303SLETR-T
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Category:Electric motor driver
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Product Name:Photoelectric smoke detector with interconnect, timer and latched alarm indicator
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Manufacturers:Allegro
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Production Batch Number:15+
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Encapsulation:20-lead TSSOP
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Stock Status:There is stock
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Stock Quantity:9060
- Minimum order quantity: 1
- Details:
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A5303 是一款带超低待机电流的低电流 BiCMOS光电烟雾探测器,可使用廉价电池供电,运行长达 10 年。该器件可与红外光室配合使用,感测烟雾微粒散发的光线。联网功能让设备实现互连,当任何设备探测到烟雾时,所有设备都能发出声音告警。设计中还整合特殊功能,促进成品探测器的协同作业和测试。
可变增益光学放大器可直接与红外发射器-探测器对交互。放大器增益水平由两个外置电容确定,并根据运行模式在内部进行选择。在待机和计时器模式中选择低增益。当发生本地告警时,该低增益将(内部)增加约 45%,以提供滞后。在按键测试或待机模式中定期监控光室敏感度时采用高增益。内置振荡器和计时电路可确保每 10 s 仅探测烟雾 100 µs ,从而大幅降低待机功耗。 此外,还整合特殊的三阶加速感测方案,以缩短发出声音告警的时间,同时减少错误触发。光室灵敏度定期予以监控,当出现两个连续的灵敏度下降周期时,将发出警告信号。
A5303 采用超薄 (
- 超低的平均待机电流实现长达 10 年的电池寿命
- 2.3 至 5.5 V 工作电压范围
- 互连选项
- 逻辑输出控制外置声音 IC
- 电池电量不足检测与警告
- 光室灵敏度测试与警告
- 三重号角芯片判别光室警告
- 通电复位 (POR)
- 输入/输出的数字过滤器可提供超卓的抗扰度
- 计时器(沉默)模式用于启动降低灵敏度期间
- 内置电路减少错误触发
- 为所有管脚提供 ESD 保护电路
- 瞬时号角模式,符合 UL217、NFPA72 和 ISO8201 标准
- 锁存告警指示灯识别触发告警的器件
andA5303SLETR-TRelated ICs are:
Model |
Manufacturers |
lot number |
encapsulation |
illustrate |
A5303SLETR-T |
Allegro |
15+ |
20-lead TSSOP |
Photoelectric smoke detector with interconnect, timer and latched alarm indicator |
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