G-TPMO-103

te.com TSD305 DIGITAL TEMPERATURE SENSORS Product Description The TSD Series are digital thermopile sensors in a TO5 package. The TSD sensors include an infrared sensor (thermopile) and a sensor signal conditioner. The TSD sensors can be interfaced to any microcontroller by an I2C interface. This microcontroller has to calculate the temperature results based on the ADC values and the calibration parameters Features        0°C … up to +300°C measurement ranges Small size Small field of view available Up to ±1°C accuracy I2C Interface Low current consumption Operating Temperature Range: -10°C … +85°C Applications     Contactless temperature measurement Climate control Industrial process control Household applications CLICK HERE › CONNECT WITH A SPECIALIST TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 1 TSD305 SERIES Digital Thermopile Sensor 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. Even if the device continues to operate satisfactorily, its life may be considerably shortened. Parameter Symbol Condition Min Typ Max Unit Supply voltage VDD --- -0.3 --- +3.63 V Storage temperature Tstor dry -20 --- +85 °C VDD VIO --- -0.5 --- VDD +0.5 V IIN --- -100 --- 100 mA ESD rating ESD Human Body Model -2 --- +2 kV Humidity Hum --- Voltage at supply and IO pins Current into supply and IO pins Non condensing --- Operating Conditions If not otherwise noted, 3.3V supply voltage is applied. Parameter Symbol Condition Min Typ Max Unit Operating supply voltage VDD stabilized, 100nF 1.68 --- 3.6 V VDD rise time tVDD --- --- --- 200 µs Operating temperature Top --- -20 --- +85 °C Resolution RES --- --- --- 0.1 °C Supply Current IVDD Active state, average --- 1050 1500 µA Sleep state, idle current --- 20 25 nA Serial data clock I2C FSCL --- 10 100 400 kHz Self-heating SH 1 sample/s, still air, 60s --- --- +0.2 °C CVDD Place close to the sensor --- 100 --- nF Min Typ Max VDD capacitor Thermopile Component If not otherwise noted, 3.3V supply voltage is applied. Parameter Absorber area Symbol Condition Sensor A --- --- At 50% of maximum signal Field of view Filter transmission range FOV --- 0.8 x 0.8 Unit mm TSD305-1C55 TSD305-2C55 TSD305-3C55 --- 88 --- deg TSD305-1SL10 --- 10 --- deg Long wave pass TSD305-1C55 TSD305-2C55 TSD305-3C55 >5.5 µm Silicon lens, no coating TSD305-1SL10 ≥1.1 µm TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 2 TSD305 SERIES Digital Thermopile Sensor Analogue to Digital Converter Parameter Symbol Condition Min Typ Max Unit Resolution ADCRES --- --- 16 --- bit tCONV --- --- 44.8 59.2 ms t63 Including rise time of sensor element --- --- 44.8 ms ITSRES --- --- 0.003 --- K/LSB Symbol Sensor Min Typ Max Unit TSD305-1C55 TSD305-3C55 0 --- +100 °C TSD305-2C55 TSD305-1SL10 0 --- +300 °C Conversion time Rise time Resolution internal temperature sensor Object temperature range Parameter Object temperature range 1) 1) TOBJ Other temperatures on request Tolerances If not otherwise noted, 3.3V supply voltage is applied. Parameter Accuracy Standard Temp 1) Symbol Tsen = sensor temperature, Tobj = object temperature Sensor Temperature ACCS +15°C < Tsen < +35°C Sensor Object Temperature TSD305-1C55 TSD305-3C55 +40°C < Tobj < +80°C TSD305-2C55 TSD305-1SL10 +170°C < Tobj < +190° Complete range Accuracy Extended Temp. 1 2) TSD305-1C55 TSD305-3C55 +15°C < Tsen < +35°C ACCE1 Complete range TSD305-2C55 TSD305-1SL10 +15°C < Tsen < +35°C Accuracy Extended Temp. 2 2) ACCE3 Unit ±1 %FS ±2 %FS ±3 %FS +40°C < Tobj < +80°C Complete range +170°C < Tobj < +190° Complete range TSD305-1C55 TSD305-2C55 TSD305-3C55 TSD305-1SL10 Complete range Max Complete range Other temperature ranges and accuracies are available on request. 1) Ideal, proved by production 2) Ideal case by design Power & Reset Parameter Symbol Condition Min Typ Max Unit tSTA1 VDD ramp up to interface communication --- --- 1 ms tSTA2 VDD ramp to first ADC measurement --- --- 2.5 ms tWUP1 Sleep to active state interface communication --- --- 0.5 ms tWUP2 Sleep to first ADC measurement --- --- 2 ms tRESET VDDlow 3 --- --- µs VDD low level VDDlow --- 0 --- 0.2 V VDD rising slope SRVDD --- 10 --- --- V/ms Start-up time Wake up time Power down time for reset TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 3 TSD305 SERIES Digital Thermopile Sensor Dimensions If not specified, all tolerances according DIN ISO 2768-m. TSD305-1C55 TSD305-2C55 TSD305-3C55 TSD305-1SL10 Pin Function Table Pin Name Type Function 1 SCL DI I2C Clock 2 SDA DIO I2C Data 3 VDD P Supply Voltage 4 VSS P Ground I²C Interface An I2C communication message starts with a start condition and it is ended by a stop condition. Most commands consist of two bytes: the address byte and command byte. I²C ADRESS The standard I2C address is Sensor I2C Address Hex I2C Address Bin TSD305-1C55 TSD305-2C55 TSD305-1SL10 0x00 0b0000000X TSD305-3C55 0x1E 0b0011110X   X = 0: I2C Write X = 1: I2C Read TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 4 TSD305 SERIES Digital Thermopile Sensor Status Byte Each return starts with a status byte followed by the requested data word. Bit 7 6 5 4 3 2 1 0 Meaning --- --- Busy --- --- Memory Error --- ---   Busy: 1 = Sensor is busy. The requested data is not available yet. Memory Error: 1 = Memory integrity check failed. Memory was changed after factory calibration. COMMANDS Note: Each return starts with a status byte followed by the requested data word. Please take care to wait a certain time after write command before read data. Command Return Description Typical update rate 16 bit EEPROM data Read data from EEPROM address (0x00 … 0x39) matching the command --- 0xAF 24 bit object temperature ADC, 24 bit sensor temperature ADC Measure object temperature and sensor temperature ADC 16 times and calculates mean value. Store data in output buffer. 45 ms 0xAE 24 bit object temperature ADC, 24 bit sensor temperature ADC Measure object temperature and sensor temperature ADC 8 times and calculates mean value. Store data in output buffer. 20 ms 0xAD 24 bit object temperature ADC, 24 bit sensor temperature ADC Measure object temperature and sensor temperature ADC 4 times and calculates mean value. Store data in output buffer. 15 ms 0xAC 24 bit object temperature ADC, 24 bit sensor temperature ADC Measure object temperature and sensor temperature ADC 2 times and calculates mean value. Store data in output buffer. 10 ms 0xAA 24 bit object temperature ADC, 24 bit sensor temperature ADC Measure object temperature and sensor temperature ADC 1 times and calculates mean value. Store data in output buffer. 5 ms 0x00 … 0x39 Best signal to noise ratio will be achieved using command “0xAF” since this uses the maximum oversampling rate of 16 measurements. TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 5 TSD305 SERIES Digital Thermopile Sensor Read EEPROM Write Command: Read EEPROM Data: Perform Measurement and Read ADC Data Write Command: Read ADC Data: TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 6 TSD305 SERIES Digital Thermopile Sensor EEPROM Content Address / hex Address / dec Description Name Format 0x00 0x01 0 1 ----- 0X02 2 Lot Nr. Serial Number I2C Address 0x03 ... 0x19 0x1A 0x1B 0x1C 0x1D 0x1E 0x1F 0x20 0x21 0x22 0x23 0x24 0x25 0x26 0x27 0x28 0x29 0x2A 0x2B 0x2C 0x2D 0x2E 0x2F 0x30 0x31 0x32 0x33 0x34 0x35 0x36 0x37 2 ... 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 Valid range: 0x00 … 0x7F, 0x04 … 0x07 are reserved 0x38 56 Example Content Value UINT16 UINT16 15001 12345 YY WWW Number I2CAdd UINT16 0x00 0 Factory Calibration Data Min. Sensor Temp. / °C Max. Sensor Temp. / °C Min. Object Temp. / °C Max. Object Temp. / °C --TSenMin TSenMax TObjMin TObjMax TC Reference Temperature TREF --0xFFEC 0x0055 0x0000 0x0064 0xBB96 0xBB99 0x41D7 0x70A4 0x3A07 0x4C8C 0x3F10 0x5CEC 0x4367 0x0D1F 0x4724 0x5A6F 0xC9A0 0x254D ----0x944B 0xD24F 0x2052 0xF1C2 0xABE5 0x991B 0x3797 0x2BBF 0x41D7 0x6DBA ---20°C +85°C 0°C 100°C Temperature Coefficient --SINT16 SINT16 SINT16 SINT16 IEEE 754 H-Word IEEE 754 L-Word IEEE 754 H-Word IEEE 754 L-Word IEEE 754 H-Word IEEE 754 L-Word IEEE 754 H-Word IEEE 754 L-Word IEEE 754 H-Word IEEE 754 L-Word IEEE 754 H-Word IEEE 754 L-Word IEEE 754 H-Word IEEE 754 L-Word ----IEEE 754 H-Word IEEE 754 L-Word IEEE 754 H-Word IEEE 754 L-Word IEEE 754 H-Word IEEE 754 L-Word IEEE 754 H-Word IEEE 754 L-Word IEEE 754 H-Word IEEE 754 L-Word UINT16 TBD Compensation Coefficient k4 Compensation Coefficient k3 Compensation Coefficient k2 Compensation Coefficient k1 Compensation Coefficient k0 Not used ADC  T Coefficient k4 ADC  T Coefficient k3 ADC  T Coefficient k2 ADC  T Coefficient k1 ADC  T Coefficient k0 Factory calibration status – internal usage only k4comp k3comp k2comp k1comp k0comp --k4Obj k3Obj k2Obj k1Obj k0Obj --- -0.0046 26.93 5.161E-04 5.639E-01 2.311E+02 4.207E+04 -1.312E+06 ---1.029E-26 1.787E-19 -1.631E-12 1.802E-05 2.693E+01 --- Change of I²C Address The I2C address of each TSD can be modified to use multiple TSDs on one I2C bus. The used I2C address is configured via an EEPROM address. Power needs to be cycled to active an updated I 2C address. Command Return Description 0x00 … 0x39 16 bit EEPROM data Read data from EEPROM address (0x00 … 0x39) matching the command 0x40 … 0x79 --- Write data from EEPROM address (0x00 … 0x39). 0x90 --- Calculate and write memory checksum (CRC). If the CRC is valid, then the “Memory Error” status bit is set to 0. TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 7 TSD305 SERIES Digital Thermopile Sensor The commands to read and write the EEPROM are shown below. After changing the I2C address, the checksum needs to be recalculated to reset the Memory Error bit. Number Format UINT16   Description: Unsigned integer Bits 16  Min (dec/hec/bin) 0 Max (dec/hec/bin) 65,535 / 0xFFFF / 0b1111 1111 1111 1111  / 0x0000 / 0b0000 0000 0000 0000 SINT16   Description: Signed integer Bits 16  Min (dec/hec/bin) - 32,768 / 0x8000 / 0b1000 0000 0000 0000 Max (dec/hec/bin) 32,767 / 0x7FFF / 0b0111 1111 1111 1111  FLOAT IEEE 754   Description: Float Bits 32  Min (dec/hec/bin) -1.4E-45 / 0x80000001 / 0b1000 0000 0000 0000 0000 0000 0000 0001 Max (dec/hec/bin) 3.403E38 / 0x7f800000 / 0b0111 1111 1000 0000 0000 0000 0000 0000 Example: H-Word 0x3DCC L-Word 0xCCCD  0b0011 1101 1100 1100 1100 1100 1100 1101  0.1   FLOAT IEEE 754 Conversions The two integer words can easily be converted to a floating-point number by using a union consisting of an integer array and a float. void main(void) { union { unsigned int iValue[2]; float fValue; } MyUnion; // 16bit unsigned integer // float IEEE 754 while(1) { MyUnion.iValue[1] = 0x3dcc; MyUnion.iValue[0] = 0xcccd; //MyUnion.fValue = 0.1; } } TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 8 TSD305 SERIES Digital Thermopile Sensor Temperature Calculation Sensor Temperature The sensor temperature TSen is calculated from the corresponding 24 bit ADC value ADCsen. Name Description ADCsen ADC Sensor Temperature Format Range INT24 Min Max 0 16,777,216 ADCsen is scaled to cover the complete sensor temperature range from TSenMin to TSenMax. Adress / hex Adress / dec Description Name Format Example Value Max 0x1A 26 Min. Sensor Temp. / °C TSenMin SINT16 0xFFEC -20°C 0x1B 27 Max. Sensor Temp. / °C TSenMax SINT16 0x0055 +85°C Formula: Tsen = ADCsen / 224  (TSenMax - TSenMin) + TSenMin Example: ADCsen = 6,364,157 Tsen = 6,364,157 / 224  [+85°C – (-20°C)] + (-20°C) = 19.83°C TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 9 TSD305 SERIES Digital Thermopile Sensor Object Temperature The object temperature Tobj is calculated in dependence of the sensor temperature Tsen and ADCObj. ADCobj is shifted by 223 in order to provide unsigned integer values for positive and negative measurement values. Name Description ADC Object Temperature Shifted by 223 (0 is represented by 8,388,608) ADCobj Range Format INT24 Min Max 0 16,777,216 The process consists of three successive steps. TC Correction Factor Adress / hex Adress / dec 0x1E 30 0x1F 31 0x20 32 0x21 33 Description Name Temperature Coefficient TC Reference Temperature TREF Formula: TCF = Example Format Content IEEE 754 H-Word 0xBB96 IEEE 754 L-Word 0xBB99 IEEE 754 H-Word 0x41D7 IEEE 754 L-Word 0x70A4 Value -0.0046 +26.93 Example: 1 + [(Tsen – Tref)  TC] Tsen = +19.83°C Tref = +26.93°C TC = -0.0046 TCF = 1 + [(19.83 – 26.93)  -0.0046] = 1.0327 TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 10 TSD305 SERIES Digital Thermopile Sensor Temperature Compensation Adress / hex Adress / dec 0x22 34 0x23 35 0x24 36 0x25 37 0x26 38 0x27 39 0x28 40 0x29 41 0x2A 0x2B Description Name Compensation Coefficient k4 k4comp Compensation Coefficient k3 k3comp Compensation Coefficient k2 k2comp Compensation Coefficient k1 k1comp Compensation Coefficient k0 k0comp Formula: Offset = Format Example Content IEEE 754 H-Word 0x3A07 IEEE 754 L-Word 0x4C8C IEEE 754 H-Word 0x3F10 IEEE 754 L-Word 0x5CEC IEEE 754 H-Word 0x4367 IEEE 754 L-Word 0x0D1F IEEE 754 H-Word 0x4724 IEEE 754 L-Word 0x5A6F IEEE 754 H-Word 0xC9A0 IEEE 754 L-Word 0x254D Value 5.161E-04 5.639E-01 2.311E+02 4.207E+04 -1.312E+06 Example: k4comp  Tsen4 + k3comp  Tsen3 + k2comp  Tsen2 + k1comp  Tsen + k0comp Tsen = +19.83°C k4comp ... k0comp See table above Offset = = 5.161·10-4  19.834 + 5.639·10-1  19.833 + 2.311·102  19.832 + 4.207·104  19.83 + -1.312·106 = -382,399 OffsetTC= Offset  TCF OffsetTC = = -382,399  1.0327 = -394,904 TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 11 TSD305 SERIES Digital Thermopile Sensor Object Temperature Determination Adress / hex Adress / dec Description Name 0x2E 46 0x2F 47 ADC  T Coefficient k4 k4Obj 0x30 48 0x31 49 ADC  T Coefficient k3 k3Obj 0x32 50 0x33 51 ADC  T Coefficient k2 k2Obj 0x34 52 0x35 53 ADC  T Coefficient k1 k1Obj 0x36 54 0x37 55 ADC  T Coefficient k0 k0Obj Formula: ADCComp = Format Example Content IEEE 754 H-Word 0x944B IEEE 754 L-Word 0xD24F IEEE 754 H-Word 0x2052 IEEE 754 L-Word 0xF1C2 IEEE 754 H-Word 0xABE5 IEEE 754 L-Word 0x991B IEEE 754 H-Word 0x3797 IEEE 754 L-Word 0x2BBF IEEE 754 H-Word 0x41D7 IEEE 754 L-Word 0x6DBA Value -1.029E-26 1.787E-19 -1.631E-12 1.802E-05 2.693E+01 Example: OffsetTC + (ADCObj - 223)1 ADCObj = 10,738,758 k4Obj ... k0Obj See table above ADCComp = = -394,904 + 10,738,758 – 8,388,608 = 1,955,246 ADCCompTC = ADCComp / TCF ADCCompTC = = 1,955,246 / 1.0327 = 1,893,334 TObj = k4Obj  ADCCompTC4 + k3Obj  ADCCompTC3 + k2Obj  ADCCompTC2 + k1Obj  ADCCompTC + k0Obj TObj = = -1.029·10-26  1,893,3344 + 1.787·10-19  1,893,3343 + -1.631·10-12  1,893,3342 + 1.802·10-5  1,893,334 + 2.693·10 = 56.28°C Valid if emissivity is 1 (100%). Otherwise the formula in brackets must be replaced by (ADCObj - 223) /  See chapter “Emissivity” on page 13 for details. 1 TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 12 TSD305 SERIES Digital Thermopile Sensor Example Code This example code is meant to illustrate the basic procedure to determinate the measured sensor and object temperatures with respect to TSD digital thermopile sensors. This code needs to be modified with respect to the compiler used. //******************************************************************************************// // File: TSD_Temperature_Determination_Example.c // // Date: 01.11.2016 // // Description: This example code is meant to illustrate the basical procedure // // to determinat the measured sensor and object temperatures with // // respect to TSD digital thermopile sensors. // // This code is not meant to work or to be compiled. // //******************************************************************************************// void TSD_Determinate_Temperature(void) { signed int siMinObjTemp, siMaxObjTemp, siMinSenTemp, siMaxSenTemp; float fTC, fTref, fK4com, fK3com, fK2com, fK1com, fK0com, fK4obj, fK3obj, fK2obj, fK1obj, fK0obj; float fTsen, fTobj; float fTCF, fOffset, fADCcomp; signed long slADC_Object, slADC_Sensor; // Read Temperature Range Minimum & Maximum siMinSenTemp = (signed int)Read_EE_UInt(26); siMaxSenTemp = (signed int)Read_EE_UInt(27); siMinObjTemp = (signed int)Read_EE_UInt(28); siMaxObjTemp = (signed int)Read_EE_UInt(29); // Read all necessary coefficients from the memory, float tye fTref = Read_EE_Float(32); fTC = Read_EE_Float(30); fTref = Read_EE_Float(32); fK4com = Read_EE_Float(34); fK3com = Read_EE_Float(36); fK2com = Read_EE_Float(38); fK1com = Read_EE_Float(40); fK0com = Read_EE_Float(42); fK4obj = Read_EE_Float(46); fK3obj = Read_EE_Float(48); fK2obj = Read_EE_Float(50); fK1obj = Read_EE_Float(52); fK0obj = Read_EE_Float(54); // Read ADC Values for Object Temp. & Sensor Temp. Read_ADC_Values(&slADC_Object, &slADC_Sensor); // Calculate Sensor Temp. (slADC_Sensor, Minimum & Maximum Sensor Temp.), Page 8 fTsen = (float)slADC_Sensor / 16777216.0 * (siMaxSenTemp - siMinSenTemp) + siMinSenTemp; // Calculate TC Correction Factor (Temp. Coefficient & Reference Temp.), Page 9fTCF = 1.0 + ((fTsen - fTref) * fTC); // Calculate Offset fOffset = fOffset + fOffset = fOffset + fOffset = fOffset + fOffset = fOffset + fOffset = fOffset + fOffset = fOffset * Value, Page 10 fK4com * fTsen * fTsen * fTsen * fTsen; fK3com * fTsen * fTsen * fTsen; fK2com * fTsen * fTsen; fK1com * fTsen; fK0com; fTCF; // Align ADC Value for Object Temperature, Page 11 slADC_Object = slADC_Object - 8388608; } // Calculate Object Temperature, Page 11 fADCcomp = (float)slADC_Object + fOffset; fADCcomp = fADCcomp / fTCF; fTobj = fTobj + fK4obj * fADCcomp * fADCcomp * fADCcomp * fADCcomp; fTobj = fTobj + fK3obj * fADCcomp * fADCcomp * fADCcomp; fTobj = fTobj + fK2obj * fADCcomp * fADCcomp; fTobj = fTobj + fK1obj * fADCcomp; fTobj = fTobj + fK0obj; // Resulting Sensor Temperature = fTsen // Resulting Object Temperature = fTobj TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 13 TSD305 SERIES Digital Thermopile Sensor Application notes field of view The thermopile’s field of view must be directed to the object surface of interest. The distance to the surface or the surface diameter must be adjusted to ensure that the complete sensors field of view is covered by the object, see example on the left in the picture below. TSD3051C55 TSD3052C55 TSD3051SL10 TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES Distance / mm Min. Diameter / mm 10 24 20 43 30 62 40 82 50 101 100 198 200 391 300 584 400 777 500 970 Distance / mm Min. Diameter / mm 10 6 20 8 30 10 40 11 50 13 100 22 200 39 300 57 400 74 500 92 10/2021 Page 14 TSD305 SERIES Digital Thermopile Sensor Direct Sunlight Sun light radiation which is transmitted through a glass window may influence the measurement accuracy. To avoid this, the thermopile sensor is equipped with a long wavelength filter. Due to not ideal filter characteristics a small portion of radiation will be added to the radiation of the object. In case of direct sunlight exposure this error can be up to +0.2°C. Touching the Sensors Cap User should avoid touching the sensors cap. There will still be a measurement deviation after changing the sensors temperature rapidly. Emissivity Every object is transmitting infrared energy in dependence to its temperature. The emissivity is the ratio of the radiated power by an object to the radiation of an ideal black body. Common materials like liquids, clothes, human skin, foods have emissivity factors >0.90 and therefore they can be measured very accurately without adopting the sensors specification. To compensate the measurement for an object with significant low emissivity, ADCobj needs to be adjusted. Name Description ADCobj ADC Object Temperature Shifted by 223 (0 is represented by 8,388,608) Emissivity  Formula: Min Max INT24 0 16,777,216 100% 0 1 Example: ADCObj = 10,738,758 = ADCCorr = Range Format (ADCObj - 223) /  Material Emissivity 0.9 (90%) ADCCorr = = 2,611,278 Material Aluminum Emissivity Human Skin 0.99 Polished 0.10 – 0.05 Oxidized 0.10 – 0.40 Polished 0.20 Rough 0.10 – 0.30 Oxidized 0.50 - 0.95 Anodized 0.60 – 0.95 Rusted Asphalt Iron 0.50 – 0.70 0.90 – 1.00 Paint Brass Aluminum paint Polished 0.05 Oxidized 0.50 - 0.60 Burnished 0.30 Ceramic 0.90 – 0.95 Copper 0.60 – 0.90 On plastic, wood 0.80 – 0.95 Paper 0.85 – 1.00 Plastic 0.95 – 1.00 0.10 Oxidized 0.20 – 0.80 Polished 0.85 – 1.00 Oxidized Gold Stainless Steel 0.05 Glass Plate Fused quartz 0.90 – 0.95 0.75 TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 0.80 On metal Polished Foods 0.50 Bronze paint 0.10 – 0.15 0.45 - 0.95 Water Liquid 0.90 – 0.95 Ice 0.95 – 1.00 Snow 0.80 – 1.00 10/2021 Page 15 TSD305 SERIES Digital Thermopile Sensor Evaluation Kit General description For easy usage and first trials an evaluation kit is available. It consists of an evaluation board and the “DTS-Viewer”-Software. The eval-board provides an USB to I²C interface and can be used on Windows PCs and Android Smartphones with an OTG capable USB port. That means that for example USB flash drives can be connected by an OTG cable to the phone. The “DTS-Viewer”-Software enables easy measurements and datalogging. This software is available for Windows and Android and supports a wide range of digital temperature sensors provided by TE. Evaluation Board Hardware description The following pictures are showing the top and the bottom side of the eval board PCBA. It is equipped with the Microchip™ MPC2221 USB to I²C transceiver, a voltage regulator and some passive components. A status LED (red circle) on the bottom of the PCBA indicates power supply and data transmission. The TSD must be plugged into the white TO socket; the indicator flag of the TSD has to be matched with notch at the socket. The connection to the PC has to be done by a USB cable with Mini-USB-B-plug on the module’s side. For connecting to a smartphone an OTG cable is required. This type of cable is used to connect a slave USB device to the USB connector of the smartphone. LED Function Table On state Function On Power on Flashing Access / data transmission DTS-Viewer description (PC version V1.X) Overview The software read out suitable temperature sensors that communicate with an MCP2221 via USB. The software can display the temperatures measured by the respective sensor and at the same time display the time course of the last 50 measured values in a graph. In addition, the measured temperatures can be recorded in a text file via the logging function. During the measurement it is possible to put a filter over the measured values and to vary the measuring speed in given intervals. To use the software no special installation process is required. Just start the executable file on the USB flash drive that is provided with the evaluation kit. The following picture shows the main window that appears after starting the executable file. TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 16 TSD305 SERIES Digital Thermopile Sensor Measurement First, the evaluation board equipped with a TSD must be connected to the PC. By pressing the START-button the measurement of both temperatures, sensor package and object temperature is started. Pressing the STOP-button stops the measurement. Disconnecting the sensor board from the PC has the same effect. Please note that the DTSViewer V1.X only uses the command “0xAF” with 16 times oversampling. To perform faster measurements the Beta-version of DTSViewer V2.X must be used. See Chapter “Changes in DTSViewer V2.X beta” for details. Switching the temperature Unit The temperature unit can be changed only when the measurement is running. This is done by clicking on the “Measurement Unit”-Symbol on the lower left area. °C and °F can be selected. Measurement Speed In the drop-down menu "Measurements/s" the measurement speed can be selected, both before and during a running measurement. You can select from a predefined selection of measurement speeds. The minimum measurement interval is limited by the internal measurement speed of the sensor. TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 17 TSD305 SERIES Digital Thermopile Sensor Filter The "Filter" button enables or disables a filter to smooth the measured values. It can be pressed before or during measurement. The filter used is a very simple implementation of a moving average filter, which is only intended to provide smoothing for unstable measured values. In this implementation the filter considers the last 5 measured values. Note: If the measured values must be as accurate as possible or if a fast reaction time is required, the filter should be switched off. Logging The software can record the measurement data in a text file. The "Enable Logging" button toggles between recording on and off. If the logging is set to "ON" the user is prompted to select or create a text file which is then used to save the measurement data each time he starts the measurement. The text file begins with the time and date information and a description of the format used. Then follows the listing of the measured values, together with sensor type and an individual time stamp. It should be noted that the measured values are always stored in °C and unfiltered, regardless of what the user has previously set in the program. Only the measuring speed has an influence on the stored data. Note: The measurement data are stored as tabulator delimited values, so each value is written into a new cell if the measured values are copied into an Excel worksheet. Configuring a new Sensorboard – internal usage only To use this function, the user must right-click on the "START" button and then click on the button that appears. This function is for internal usage only and could lead to malfunction of the evaluation board. If the user activates the function by accident he should leave everything as it is and skip it. TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 18 TSD305 SERIES Digital Thermopile Sensor Changes in DTSViewer V2.X beta Overview The following changes taken place in the DTSViewer V2.X:    Main screen with slightly different menu bar at the bottom Measurement speed adjustable by slider. Limitation of 20 measurements per second can be overridden to achieve faster measurement with lower oversampling. New advanced menu to o Configure TSD oversampling rate “TSD Speed” by using different commands – will be reset to 16 measurements after program restart o Configure TSD I²C address and set the software to different I²C address than 0x00. o Configure the eval boards for different TE digital sensors – internal usage only. Currently, there is no possibility to measure the temperatures in °F. This will maybe back in the official released version. Main Screen The main screen of DTSViewer V2.X looks like follows Measurement speed The following pictures show the new design of the measurement/s menu. The left picture shows the slider. When enabling faster speeds by clicking the checkbox the right menu appears. Since this is only the request frequency of the display and logging but not the sensor update rate the user has to take care to set the sensor speed accordingly. See “TSD Speed Config” below. Otherwise the program could crash. TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 19 TSD305 SERIES Digital Thermopile Sensor Advanced Menu By clicking the “Advanced” button the following menu appears: Change TSD Speed The “Change TSD Speed” menu enables the user to temporary change the oversampling rate of the sensor. As mentioned in the datasheet there are 5 different commands initiate a measurement cycle at the TSD. Per default the command “0xAF” is used where 16 measurements are taken and are internally processed to an average value. To accelerate sensor data output this oversampling rate can be modified using a different measurement command. The pictures below show the process how to change the measurement command used by the software. This will not be stored in a config file therefore the setting after program start is always “0xAF”. By clicking “Get current Setting” the current command the software uses is read. In the pull-down menu the user can now change the command to the one he would like to use. By clicking “Set new Measurement Speed” the value is taken and the software will use the new command now. Change TSD Address To change the I²C address of the TSD the user must search for a TSD first by clicking “Search for TSD”. Then the I²C bus is scanned for a TSD. If one is found the software shows the address at “Current address”. IN the field “New address” the new address can be selected. “Set new Address” writes the value to the TSDs EEPROM. Then a message appears to perform one power cycle to make the change active. Per default DTSViewer uses I²C address 0x00. If there is no TSD with this address a message appears if the user wants to scan the bus. By clicking “Yes” the bus is scanned and the Software uses now the I²C address of the connected sensor. TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 20 TSD305 SERIES Digital Thermopile Sensor Sensorboard Config This function is for internal usage only. TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 21 TSD305 SERIES Digital Thermopile Sensor Order Information Further customer specific adaptations are available on request. Please refer to the table below for part name, description and order information. Part Number Part Desription Comment G-TPMO-101 TSD305-1C55 Digital Thermopile Sensor TO5, I2C Interface, 0°C … +100°C 10205977-00 TSD305-2C55 Digital Thermopile Sensor TO5, I2C Interface, 0°C … +300°C 10207697-00 TSD305-3C55 Digital Thermopile Sensor TO5, I2C Interface Add=0x1E, 0°C … +100°C 10213286-00 TSD305-1SL10 Digital Thermopile Sensor TO5, FOV=10°, I2C Interface, 0°C … +300°C 20006766-00 TSD305-Series Evaluation Kit Contains evaluation board, one piece G-TPMO-101 and 104 and the DTS-Viewer software on USB drive 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. 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Users of TE Connectivity products should make their own evaluation to determine the suitability of each such product for the specific application. © 2021 TE Connectivity Corporation. All Rights Reserved. Version 2 05/2021 TE CONNECTIVITY SENSORS /// DATASHEET TSD305 SERIES 10/2021 Page 22