PYD1388/7084

PIR Detector TM Infrared Sensing Solutions Product Specification LHI 878 / 3901 Features • TO-5 metal housing for EMI shielding • High responsivity ceramic pyroelectric elements • Dual detector with 2 × 1 mm2 elements • 95◦ field-of-view • Integrated FET in source follower configuration • Intergrated EMI filtering stage Applications Dual Element Pyro The LHI 878 is a dual element detector, serial opposed format, two elements based on pyroceramic. The signal is connected to an internal FET in source follower configuration. For better EMI immunity an internal filtering circuit is implemented. The LHI 878 is a cost effective detector in traditional security applications. • Horizontal mounting applications • Optimal for cost effective designs • Long distance human motion detection (with lens) • Energy saving applications • Intrusion alarms Issued: 31/07/2018 / Revised: 17/04/2019 Contents 1 Physical Characteristics 1.1 Pyro-Electric Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 Optical Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 Filter Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 4 5 6 2 Electrical Characteristics 2.1 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 7 7 3 Handling, Operation and Precautions 3.1 Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 8 8 4 Quality and Statements 9 5 Packaging 10 LHI 878 / 3901 Physical Characteristics Table 1: Summary of physical characteristics. Parameters and data refer to an ambient temperature of 25 ± 3 ◦C. Parameter Symbol Min Housing Field of View Spacing Match Max Unit TO-5 FOV Element Size Responsivity Typ R (R A − R B )/R A 3.3 95 2×1 1 4.2 Noise 20 IR-Filter Standard Remarks/Conditions see fig. 1 ◦ 10 50 see sec. 1.2 mm see fig. 1 mm see fig. 1 kV W−1 see sec. 1.1 % see sec. 1.1 µVpp see sec. 1.1 see sec. 1.3 Figure 1: Dimensions and Connections. Explanations follow in this document. 3 Excelitas Technologies GmbH & Co. KG Wenzel-Jaksch-Str. 31 65199 Wiesbaden Germany Tel.: +49 (0)611 492 0 Fax.: +49 (0) 611 492 177 www.excelitas.com Product Specification 1 Issued: 31/07/2018 / Revised: 17/04/2019 LHI 878 / 3901 Pyro-Electric Elements The element configuration is shown in figure 1. It features a dual element configuration in a serial opposed format. Its typical application is long distance, wall mounted, motion detection . Figure 2: Test set up for the measurement of responsivity and match. 1 2 3 4 6 5 DSP Display Figure 3: Masking of elements to test the electrical parameters. Responsivity A Responsivity B Match Noise Cover Plate The typical set-up for the measurement of responsivity and match is illustrated in figure 2. The black body (BB) radiator (1) is set to 373 K (100 ◦C). The signal is modulated by a rotating chopper (2). An aperture (3) is used to adjust the radiation flux. The cover plate (4) is masking the elements as shown in figure 3. The sensor (5) is interfaced to a signal processing chain (6). To measure noise, a bandpass filter in the range of 0.4 Hz to 10 Hz is applied. Responsivity (R ) and match are measured at a modulation frequency of 1 Hz. The match is defined by Match R × 100 (1) Noise is measured shut from infra-red energy. The measurement is performed after a settling time of 10 min at an ambient temperature of 25 ◦C ± 3 ◦C. Noise is monitored for the duration of 600 s . 4 Excelitas Technologies GmbH & Co. KG Wenzel-Jaksch-Str. 31 65199 Wiesbaden Germany Tel.: +49 (0)611 492 0 Fax.: +49 (0) 611 492 177 www.excelitas.com Product Specification 1.1 Issued: 31/07/2018 / Revised: 17/04/2019 LHI 878 / 3901 Product Specification 1.2 Issued: 31/07/2018 / Revised: 17/04/2019 Optical Properties Figure 4: Illustration for the definition of the horizontal field of view (FOV). FOV The horizontal field of view (FOV) as drawn to figure 4 is given as the geometrically unobstructed light path to both elements. The FOV of 95◦ is given for the optical light acceptance with the full so-called common mode suppression. The optical distance as it is given in figure 1 represents the effective focal plane for the application specific optics. The optical distance is shorter than the geometrical due to refraction of light in the filter. 5 Excelitas Technologies GmbH & Co. KG Wenzel-Jaksch-Str. 31 65199 Wiesbaden Germany Tel.: +49 (0)611 492 0 Fax.: +49 (0) 611 492 177 www.excelitas.com LHI 878 / 3901 Product Specification 1.3 Issued: 31/07/2018 / Revised: 17/04/2019 Filter Properties Table 2: Filter properties Parameter Symbol Min Average Filter Transmittance TA 77 Average Filter Transmittance TA Cut-on Wavelength λ(5 %) Typ 5.2 Max 5.5 Unit Remarks/Conditions % 7.5 µm < λ < 13.5 µm λ < 5 µm at 25 ◦C 0.5 % 5.8 µm Figure 5: Filter transmittance, typical curve 100 90 80 Transmittance [%] 70 60 50 40 30 20 10 0 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Wavelength [µm] 6 Excelitas Technologies GmbH & Co. KG Wenzel-Jaksch-Str. 31 65199 Wiesbaden Germany Tel.: +49 (0)611 492 0 Fax.: +49 (0) 611 492 177 www.excelitas.com LHI 878 / 3901 Electrical Characteristics 2.1 Absolute Maximum Ratings Table 3: Absolute Maxiumum Ratings. Data applicable to operation at free-air temperature range. Parameter Symbol Operating Voltage VDD Min Typ −40 −40 Storage Temperature Operating Temperature Max Unit 12 85 70 V ◦C Remarks/Conditions < 60 % r.H. ◦C Stresses beyond the limits listed in table 3 may cause permanent damage to the device. Exposure to absolute maximum ratings for long time may affect the device reliability and may lead to deterioration of any parameter. 2.2 Electrical Data Table 4: Operating Voltages at the connections to the internal FET. Parameter Symbol Min 2 0.2 0.5 Operating Voltage VDD Source/Offset Voltage Vs Drain-Source Voltage VDS Typ Max Unit 12 1.55 V Remarks/Conditions V V The sensing elements are connected to a build-in FET in source follower circuit (see figure 1 ). It is recommended to use a load resistor of 47 k Ω . Unless specified differently all data and specifications refer to 25 ◦C ± 3 ◦C and VDD = 11 V. Parameters will vary when operating at different temperatures. 7 Excelitas Technologies GmbH & Co. KG Wenzel-Jaksch-Str. 31 65199 Wiesbaden Germany Tel.: +49 (0)611 492 0 Fax.: +49 (0) 611 492 177 www.excelitas.com Product Specification 2 Issued: 31/07/2018 / Revised: 17/04/2019 LHI 878 / 3901 3.1 Handling, Operation and Precautions Handling Shelf Life The product can be stored for 12 months before usage at −10 ◦C to 40 ◦C (