TSEV0108L39 Thermopile Sensor Module Contact less Temperature Measurement 8 Measurement Pixels Wide Supply Voltage Range Digital Interface Bus (SPI) DESCRIPTION TSEV0108L39 is a contact-less temperature measuring system for OEM use based on the detection of infrared radiation. TSEV0108L39 is equipped with an infrared sensor (Thermopile) in front. In this version a Thermopile Array, including 8 pixels, is used. It has to be pointed at the target object The basic working principle is: Detection of infrared radiation with a Thermopile sensor Determination of sensor temperature using a thermistor Calculation of ambient and object temperature using a processing unit Providing the temperatures at digital output bus (SPI like Interface) FEATURES -20C - +120C Measurement Range 4V - 16V Supply Voltage Range Up to 2C Accuracy TSEV0108L39 Rev E3 APPLICATIONS Contact less Temperature Measurement Microwave Oven Climate Control www.meas-spec.com 1/8 2012-05-29 TSEV0108L39 Thermopile Sensor Module ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings are limiting values of permitted operation and should never be exceeded under the worst possible conditions either initially or consequently. If exceeded by even the smallest amount, instantaneous catastrophic failure can occur. And even if the device continues to operate satisfactorily, its life may be considerably shortened. Parameter Supply Voltage Operating Temperature Storage Temperature Humidity Humidity Symbol Vcc Top Tstor Hum L Hum H Conditions Measured versus GND Min -0.3 -10 -30 Typ Max 16 +85 +85 85 50 -30C - +50C +50C - +85C Unit V C C % % SENSOR CHARACTERISTICS If not otherwise noted, 25C ambient temperature, 5V supply voltage were applied. Parameter Total Field of View Individual Field of View Focal length Symbol T_FOV P_FOV f Conditions Over all 8 Pixels Field of View of one Pixel Min Symbol Vcc Conditions Measured versus GND Full ambient temp. range, no output load -30C - +50C +50C - +85C Min 4 Conditions Min Typ 40 3.5 3.9 Max Unit Typ 5 Max 6 Unit V 10 15 mA 85 50 % % Max Unit kHz mm OPERATING CONDITIONS Parameter Supply voltage Supply Current I Humidity Humidity Hum L Hum H INTERFACE CHARACTERISTICS Parameter Clock Rate (SPI) Data Output Rate (New Measurement Data of all 8 Pixels available) Symbol FSPI Fout Typ 100 1 Hz OPERATIONAL CHARACTERISTICS Parameter Object Temperature Range Ambient Temperature Range Resolution Symbol Tobj Tamb Res Standard Start-Up Time tStart Accuracy tolerance when Tambient = 25C 5C 1) T Conditions Min -20 0 Time from turning on supply to first measurement -5C < Tobject < +5C Outside above range Typ Max +120 +85 0.1 Unit C C C 3 5 s 1) 2 41) C C Valid for a distance of 100mm and black body size of 150mm x 150mm. TSEV0108L39 Rev E3 www.meas-spec.com 2/8 2012-05-29 TSEV0108L39 Thermopile Sensor Module MECHANICAL DIMENSIONS Only use hatched areas for mechanical assembly (screws, nuts, etc). TERMINALS Connector: JST B5B-PH-K-S(LF)(SN) Pin 1 2 3 4 5 Name GND MISO MOSI CLK VDD Desription Supply Ground Data Out Data In Clock Supply Voltage 1 TSEV0108L39 Rev E3 Type Supply Output Input Input Supply 5 www.meas-spec.com 3/8 2012-05-29 TSEV0108L39 Thermopile Sensor Module BLOCK DIAGRAM Thermopile 8 T hermopile Sensors Clk MOSI MISO SPI like Interface Supply MCU FIELD OF VIEW ANGLE OF PIXELS 1 19,03 TSEV0108L39 Rev E3 2 13,84 3 8,41 4 2,82 5 -2,82 6 -8,41 www.meas-spec.com 4/8 7 -13,84 8 -19,03 2012-05-29 TSEV0108L39 Thermopile Sensor Module FUNCTION SPI INTERFACE PHYSICAL INTERFACE PARAMETERS Parameter Symbol Baudrate FSPI Conditions Data Bits Edge Chip Select Input Voltage Low Input Voltage High Output Current High Output Current Low Min 10 Typ Max 200 Unit 0.8 3.6 V V mA mA kHz 8 Rising No 2.8 1 1 @ 2.8V @ 0.8V SPI CONNECTION CLK CLK MOSI MOSI Master TSEV0108L39 MISO MISO GND GND SPI SIGNAL TIMING DESCRIPTION CLK MSB LSB MOSI 7 6 5 4 3 2 1 0 MISO 7 6 5 4 3 2 1 0 MOSI = Master Out Slave In MISO = Master In Slave Out TSEV0108L39 Rev E3 www.meas-spec.com 5/8 2012-05-29 TSEV0108L39 Thermopile Sensor Module INTERNAL RESET The internal SPI status is reset to idle state if one of the following conditions occur: 100ms without receiving data Reset due to cycling of supply voltage FILTER CIRCUITRY Capacitors are added to the following lines in to reduce noise/spikes in order to provide stable SPI transmission even in EMC affected environment: CLK MOSI A 10nF capacitor is added parallel to ground potential. SPI SIGNAL SEQUENCE Reading Temperature of Pixel 1 Nr. MOSI MISO Direction Description 1 0xA1 --- MS Sending Command (See Command Reference) 2 0XFF 0xXX 3 0XFF 0xXX Wait at least 150us to arrange temperature data MS Receiving High Byte (Send 0xFF while receiving) Wait at least 150us to arrange temperature data MS Receiving Low Byte (Send 0xFF while receiving) EXAMPLE FOR 5V SPI INTERFACE LINE The sensor can not be connected directly to a SPI interface with 5V levels. Therefore the following circuitry is suggested. The Baudrate should be limited to 20kHz. CLK MOSI 1kOhm MOSI Master MISO 2kOhm 1kOhm 2kOhm CLK GND GND TSEV0108L39 Rev E3 TSEV0108 MISO www.meas-spec.com 6/8 2012-05-29 TSEV0108L39 Thermopile Sensor Module AMBIENT AND OBJECT MEASUREMENT Please refer following table for SPI commands to read object temperature and ambient temperature. Both values are transmitted in tenth of degrees. All temperature read outs are to be interpreted as twos complement. Com Description Reply Bytes 0xA0 Sensor Temperature Sensor temperature in hundredth of degrees Celsius 2 0xA1 Temperature Pixel 1 Temp. at pixel position 1 in tenth of degree Celsius 2 0xA2 Temperature Pixel 2 Temp. at pixel position 2 in tenth of degree Celsius 2 0xA3 Temperature Pixel 3 Temp. at pixel position 3 in tenth of degree Celsius 2 0xA4 Temperature Pixel 4 Temp. at pixel position 4 in tenth of degree Celsius 2 0xA5 Temperature Pixel 5 Temp. at pixel position 5 in tenth of degree Celsius 2 0xA6 Temperature Pixel 6 Temp. at pixel position 6 in tenth of degree Celsius 2 0xA7 Temperature Pixel 7 Temp. at pixel position 7 in tenth of degree Celsius 2 0xA8 Temperature Pixel 8 Temp. at pixel position 8 in tenth of degree Celsius 2 EXAMPLE OF TEMPERATURE CALCULATION For reading object temperature of pixel 3 send: 0xA3 Return values i.e.: Byte(0) = 0x02 Byte(1) = 0xB0 Temperature Tobj = (256 * Byte(0) + Byte(1)) / 10 = (256 * 2 + 11) / 10 = 52,3C OUT OF TEMPERATURE RANGE INDICATION Com Description Reply Bytes 0xA0 Sensor Temperature < 0C 0x8001 2 0xA0 Sensor Temperature > 85C 0x8002 2 0xA1 - 0xA8 Pixel Temperature < -20C 0x8003 2 0xA1 - 0xA8 Pixel Temperature > +120C 0x8004 2 ORDER INFORMATION Please order this product using following: Part Number G-TPMO-014 TSEV0108L39 Rev E3 Part Description TSEV0108L39 www.meas-spec.com 7/8 2012-05-29 TSEV0108L39 Thermopile Sensor Module EMC Due to the use of these modules for OEM application no CE declaration is done. Especially line coupled disturbances like surge, burst, HF etc. cannot be removed by the module due to the small board area and low price feature. There is no protection circuit against reverse polarity or over voltage implemented. The module will be designed using capacitors for blocking and ground plane areas in order to prevent wireless coupled disturbances as good as possible. DEFINITIONS AND DISCLAIMERS Application information - Applications that are described herein for any of these products are for illustrative purpose only. MEAS Deutschland GmbH makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Life support applications - These products are not designed for use in life support appliances, devices, or systems where malfunctions of these products can reasonably be expected to result in personal injury. MEAS Deutschland GmbH customers using or selling this product for use in such applications do so at their own risk and agree to fully indemnify MEAS Deutschland GmbH for any damages resulting from such improper use or sale. TECHNICAL CONTACT INFORMATION NORTH AMERICA EUROPE ASIA Measurement Specialties, Inc. 1000 Lucas Way Hampton, VA 23666 United States Phone: +1-800-745-8008 Fax: +1-757-766-4297 Email: sales@meas-spec.com Web: www.meas-spec.com MEAS Deutschland GmbH Hauert 13 D-44227 Dortmund Germany Phone: +49-(0)231-9740-0 Fax: +49-(0)231-9740-20 Email: info.de@meas-spec.com Web: www.meas-spec.com Measurement Specialties China Ltd. No. 26, Langshan Road High-tech Park (North) Nanshan District, Shenzhen 518057 China Phone: +86-755-33305088 Fax: +86-755-33305099 Email: info.cn@meas-spec.com Web: www.meas-spec.com The information in this sheet has been carefully reviewed and is believed to be accurate; however, no responsibility is assumed for inaccuracies. Furthermore, this information does not convey to the purchaser of such devices any license under the patent rights to the manufacturer. Measurement Specialties, Inc. reserves the right to make changes without further notice to any product herein. Measurement Specialties, Inc. makes no warranty, representation or guarantee regarding the suitability of its product for any particular purpose, nor does Measurement Specialties, Inc. assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability, including without limitation consequential or incidental damages. Typical parameters can and do vary in different applications. All operating parameters must be validated for each customer application by customer's technical experts. Measurement Specialties, Inc. does not convey any license under its patent rights nor the rights of others. TSEV0108L39 Rev E3 www.meas-spec.com 8/8 2012-05-29 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: TE Connectivity: G-TPMO-014 (TSEV0108L39)