PY-ITV-DUAL TO39(3+1) (REV. 9.3) Thin Film Pyroelectric Dual Channel Sensor Introduction Pyreos thin film pyroelectric infrared (IR) sensors for gas detection and other substance concentration measurements offer exceptionally high responsivity, low microphonics and class leading thermal and electrical stability. This high performance current mode sensor achieves a signal to noise of ~10,000 and offers a fast, stable response over a wide operating frequency range. The sensor elements are built into a low noise circuit that has an internal CMOS op amp, with a 10 G feedback resistor outputting a voltage signal centred around half the supply rail. Sensor Characteristics Electrical Characteristics 2 Filter aperture 2.6 mm square Max. Voltage (+V) 8.0 V Element size 1000 m x 1000 m Min. Voltage 2.7 V Package TO39 Output voltage normalised around mid-rail 1 Responsivity 150,000 V/W Microphonics S ~2 V/ g at 10Hz vib 1 8 D* 3.5 x 10 cmHz/ W Time Constant ~12 ms 1 Noise 70 VHz Operating Temperature -40 to +85 C Storage Temperature -40 to +110 C Filters SeeFilters Availabl 1 10 Hz, 500 K, room temperature, without window and optics 2 Absolute maximum operating voltage Frequency Characteristics Please note: the information contained in this document is subject to change without further notification. Pyreos reserves the right to alter the performance and any resulting specification. Pyreos may choose not to supply any engineering sample devices as a commercial product. No responsibility is accepted for any consequential loss incurred. LIM-252 LIM-262 LIM-272 Pyreos Ltd, 14-16 The Curve, 32 Research Avenue North, Heriot Watt Research Park, Edinburgh EH14 4AP, UK. Tel: +44 131 322 0732, www.pyreos.com Copyright Pyreos Ltd 2019 1 PY-ITV-DUAL TO39(3+1) (REV. 9.3) Package Information Filter window size Note: Ensure that the sensor base is not in contact with the PCB in order to avoid shorts. Recommended Circuit Diagram Please note: the information contained in this document is subject to change without further notification. Pyreos reserves the right to alter the performance and any resulting specification. Pyreos may choose not to supply any engineering sample devices as a commercial product. No responsibility is accepted for any consequential loss incurred. LIM-252 LIM-262 LIM-272 Pyreos Ltd, 14-16 The Curve, 32 Research Avenue North, Heriot Watt Research Park, Edinburgh EH14 4AP, UK. Tel: +44 131 322 0732, www.pyreos.com Copyright Pyreos Ltd 2019 2 Package dimensions Top View Internal Schematic Bottom View