a5364 Allegro MicroSystems, Inc., a5364 Datasheet
a5364
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a5364 Summary of contents
Page 1
... The A5364 is supplied in a low-cost 16-pin dual in-line plastic package (DIP rated for continuous operation over the temperature range of 0°C to 50°C. The Pb (lead) free version (suffix – ...
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... A5364 Selection Guide Part Number Pb-Free A5364CA-T Yes A5364CA – Absolute Maximum Ratings* Characteristic Supply Voltage Range Input Voltage Range Reverse Battery Condition Duration Input Current Operating Ambient Temperature Junction Temperature Storage Temperature Range * CAUTION: CMOS devices have input static protection but are susceptible to damage when exposed to extremely high static electrical charges. ...
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... A5364 +Supply 9V VDD LBSamp Low Battery Sample LOW-V SET SENSITIVITY SET SSamp Smoke Sample -Supply VSS Functional Block Diagram I Band Gap Low Battery 600 kΩ Comparator _ Logic + 500 kΩ Smoke Comparator LBSamp 1.1 MΩ SSamp Oscillator and Timing + _ GUARD1 DETECT IN GUARD2 ...
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... A5364 ELECTRICAL CHARACTERISTICS R = 8.2 MΩ (unless otherwise noted) TIMINGRES Characteristic Symbol Supply Voltage Range V DD Supply Current I DD Detector Input Current I DETECTIN V OS(GUARD1) Input Offset Voltage V OS(GUARD2 Hysteresis V HYS V CM(guard) Common Mode Range AG1 Active Guard Impedance Z AG2 t osc ...
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... Detector Circuitry When the voltage on the DETECT IN pin is less than the volt- age on the SENSITIVITY SET pin, the A5364 evaluates this as a smoke condition. During a smoke condition, the resistor divider network that sets the sensitivity (also referred to as the smoke trip ...
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... A5364 of the ionization chamber by connecting a resistor between the SENSITIVITY SET pin and either the VDD or VSS pins. With no external connections on the SENSITIVITY SET pin, while the A5364 is checking for smoke SENSITIVITYSET To increase sensitivity, a resistor can be connected between SENSITIVITY SET and VDD, with the value: = 1.1E6 × ...
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... A5364 Standby Mode OSC CAP Pin Internal Clock Smoke Sample Low Battery Test LED Pin Low Battery Condition VDD Pin Low Battery Test LED Pin LED off (High-Z) Horn Enable Ionization Smoke Detector Timing Diagrams (Not to scale) Test event t t osc ...
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... A5364 Local Smoke Detection/Test Alarm Condition Test event Smoke Sample Smoke Chamber LED Pin LED on Horn Enable I/O Pin Remote Alarm Condition LED Pin Horn Enable I/O Pin t osc(alarm) OSC CAP Pin Internal Clock Smoke Sample LED Pin 24 clock cycles V < V (smoke) DETECTIN ...
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... A5364 A .005 [1.27] Allegro MicroSystems offers an industry-leading range of ionization and photoelectric smoke detector ICs. For a current listing, please visit our website at: Copyright ©2001, 2007, Allegro MicroSystems, Inc. The products described here are manufactured under one or more U.S. patents or U.S. patents pending. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such de par tures from the detail spec tions as may be required to per- mit improvements in the per for mance, reliability, or manufacturability of its products ...