driven by E910.92 PIR motion detector Features General Description ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ The E910.92 integrated circuit combines all required functions for a single chip Passive Infra Red (PIR) motion detector. A relay and an LED output are provided for interfacing to an occupancy detect or alarm system. Fully integrated PIR motion detector Supply voltage range 4.8 V to 48 V Differential PIR sensor input Digital Signal Processor (DSP) Selectable relay output polarity Selectable pulse count and timing algorithm for motion detection Temperature compensation input Low current consumption Operating temperature range -40°C to +85°C SOIC 20 package Due to the adjustable threshold and TRUE-ROLL™ time window, the IC can be adapted to the requirements of the application. Hereby an optimized detection accuracy is reached. One or two PIR sensors can be connected directly to the PIR inputs. The pull-down resistors and DC decoupling circuitry are integrated on chip. Internally, the PIR sensor signal is converted to a 15 bit digital value. The parameters for sensitivity, pulse count and timing are set by means of connecting the corresponding inputs to VDD, VSS or leaving them open. The voltage level on the temperature compensation input is converted to a digital value with 4 bit resolution. All signal processing is performed digitally. Applications ÿ ÿ ÿ ÿ PIR motion detection Intruder detection Occupancy detection Motion sensor lights IRA1 VDDA 11 PIRIN 12 VSSA 14 NPIRIN 13 Threshold/Sensitivity PT0 PT0 PT1 PT1 VDD VSS 5 VSSA Input Amplifier A/D Converter DP0 17 DP1 DP1 16 Time Window DT0 DT0 7 DT1 DT1 6 Threshold Detector Alarm Event Processor VSS ELMOS Semiconductor AG 10 VB 20 LED 19 RELAY C1 L1 Output Driver VSSA 4 Pulse Count DP0 Voltage Regulator Band Pass Filter 2 VDD 3 SENSE 18 VSS 9 TEST Oscillator 8 RPOL Temperature Compensation 15 VSS D1 Alarm D2 R2 Supply REL1 Alarm Near Far S2 C3 C2 VDD 0V VSS N1 TCOMP VDD NTC R3 R4 R5 E910.92 Info Sheet QM-No.: 25IS0029E.00 2009-09-03 ELMOS Semiconductor AG – Headquarters Heinrich-Hertz-Str. 1 | 44227 Dortmund | Germany Phone + 49 (0) 231 - 75 49 - 100 | Fax + 49 (0) 231 - 75 49 - 149 [email protected] | www.elmos.de Note ELMOS Semiconductor AG (below ELMOS) reserves the right to make changes to the product contained in this publication without notice. ELMOS assumes no responsibility for the use of any circuits described herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. While the information in this publication has been checked, no responsibility, however, is assumed for inaccuracies. ELMOS does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of a life-support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications. Copyright © 2009 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited.