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Smoke Detector, CO Detector and Horn Driver ICs

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Low-Power and Cost-Effective ICs

If you are creating a smoke detector, carbon monoxide (CO) detector or security application, we offer a large portfolio of low-power and cost-effective ICs with a variety of features to meet your design’s requirements. These mix-and-match solutions include low-power ionization and photoelectric smoke detector ICs, CO detector ICs and stand-alone horn driver ICs. Our global technical support team is also available to assist you with your smoke detector design.

Featured Product

RE46C190 Demo Board

The demo board is a complete stand-alone smoke detector application with a smoke chamber emulator. The demo board allows evaluation of all the functions of the RE46C190. Key test points of the device are available at the bottom edge of the demo board. It is designed for battery operation using a CR123A battery or can be operated using a power supply. The RE46C190 application circuit is on the right side of the board by the battery holder and piezo horn and the smoke chamber emulator is on the left.

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Highlights

Our ionization and photoelectric smoke detector ICs are complete solutions for creating a low-cost smoke detector, while our ionization smoke detector front ends can be combined with one of microcontrollers (MCUs) to create a complete design. Whether you are developing an ionization smoke alarm or a photelectric smoke alarm, we offer devices with the following features:

Low battery detection
Reverse battery protection
Temporal continuous tone pattern horn driving
Low-current, low-power operation
SOIC or PDIP package
Interconnect pin

We also provide a selection of integrated devices that include these additional features:

Interconnect for sounding multiple connected units
Sensitivity timer
Internal power-on reset
Reverse battery protection
Diagnostic mode for production calibration