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MC146010

Part Number	MC146010
Manufacturer	Freescale Semiconductor
Description	Low Power CMOS Photoelectric Smoke Detector
Published	Jun 30, 2006
Detailed Description	www.DataSheet4U.com Freescale Semiconductor Technical Data Document Number: MC146010 Rev 0, 09/2005 Low Power CMOS Ph...
Datasheet	MC146010 PDF File

Overview

www.
DataSheet4U.
com Freescale Semiconductor Technical Data Document Number: MC146010 Rev 0, 09/2005 Low Power CMOS Photoelectric Smoke Detector IC The MC146010 is an advanced smoke detector component containing sophisticated very-low power analog and digital circuitry.
The IC, when used with an infrared photoelectric chamber and a small number of external components, will detect smoke by sensing scattered light from smoke particles.
When detection occurs, a pulsating alarm is sounded via on-chip push-pull drivers and an external piezoelectric transducer.
The MC146010 provides both audible and visual alarms.
Upon sensing a normal smoke level, both alarms will be activated.
It is possible to mute the audible alarm for approximately eight minutes through the Integrated Mute Function (IMF), although the LED will continue to flash at a high rate.
This feature is resettable through a pushbutton test.
The IMF feature will be overridden by remote smoke, high smoke level, timeout or reset.
The Alarm memory feature will allow for identification of an alarming detector.
Through a pushbutton test, the LED will flash rapidly if there was a previous alarm condition detected at the unit.
The variable-gain photo amplifier allows direct interface to IR detector (photodiode).
The gain settings are determined by external capacitors and compensation resistors.
A two stage speed-up is incorporated into the smoke monitor to minimize time and help reduce false triggering.
Further reduction of false triggering is also addressed with the double sample chamber sensitivity and double I/O sample.
Features • • • • • • • • • • • Integrated Mute Function (IMF) to Temporarily Disable Horn Alarm Memory to Help Identify Alarming Unit Speed-Up Sampling Rate After First Detection of Smoke Double Sample for Degraded Chamber Sensitivity Monitor Digital Noise Filter on the I/O Pin Power-Up and Power-Down RESET Low-Battery Trip Point Set Externally Temporal Horn Pattern Operating Temperature: -10 to 75...

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