M75010

www.DataSheet4U.com MOSDESIGN SEMICONDUCTOR CORP. SMOKE DETECTOR PHOTOELECTRIC SMOKE DETECTOR WITH INTERCONNECT GENERAL DESCRIPTION M75010 The M75010 is a very low-power IC providing all of the required features for a photoelectric type smoke detector. This device can be used in conjunction with an infrared photoelectric chamber to sense scattered light from smoke particles. A variable-gain photo amplifier can be directly interfaced to an infrared emitter / detector pair. The amplifier gain levels are determined by two external capacitors that are then internally selected depending on the operating mode. Low gain is selected during standby and timer modes. During a local alarm this low gain is increased ( internally ) by ~ 10% to reduce false triggering. High gain is used during the push-button test and during standby to periodically monitor the chamber sensitivity. FEATURES ‧ Interconnect up to 50 detectors. ‧ Piezoelectric horn driver. ‧ All internal low-battery detection. ‧ Power-on reset. ‧ Built-in circuits to reduce false triggering. ‧ 6V to 12V operating voltage range. ‧ ESD-Protection circuitry on all pins. APPLICATIONS ‧ Smoke detector. PIN ASSIGNMENT M75010P C1 C2 DETECT STROBE VDD IRED I/O HORN1 8 9 1 16 TEST TRIP VSS OSCR OSCC LED FEEDBACK HORN2 1/10 2006-01-25 MOSDESIGN SEMICONDUCTOR CORP. SMOKE DETECTOR PHOTOELECTRIC SMOKE DETECTOR WITH INTERCONNECT ABSOLUTE MAXIMUM RATING Parameter Supply Voltage Range Input Voltage Range Input Current Operating...