LS6513

LSI/CSI LS6511N LS6512 LS6513 U® L LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 (631) 271-0400 FAX (631) 271-0405 A3800 PIR SENSOR INTERFACE September 2009 FEATURES: Direct Interface with PIR Sensor Two-Stage Differential Amplifier Amplifier Gain and Bandwidth externally controlled True and Complementary Output Drives Separate digital filters for processing positive and negative input signals Single Pulse/Dual Pulse/ Concurrent Pulse Detection Adjustable Output Pulse Width Optional 5V Shunt Regulator Output 75µA Typical Supply Current Undervoltage Detection LS6511N(DIP); LS6511N-S (SOIC) - See Figure 1A LS6512(DIP); LS6512-S (SOIC) - See Figure 1A LS6513(DIP); LS6513-S (SOIC) - See Figure 1B APPLICATIONS: Security system intrusion detection, automatic doors, motion triggered events such as remote animal photography, etc. DESCRIPTION (See Figure 5) The LS6511N, LS6512 and LS6513 are CMOS integrated circuits designed for detecting motion from a PIR Sensor and initiating appropriate responses. DIFFERENTIAL AMPLIFIER Each stage of the two stage Differential Amplifier can be set to have its own amplification and bandwidth. The two inputs to the first stage allow for single-ended or differential connection to PIR Sensors. This stage can be biased anywhere in its dynamic range. The second stage is internally biased so that the Window Comparator’s lower and higher thresholds can be fixed relative to this bias. Signal levels as low ...