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. 2 The TSD sensors can be interfaced to any microcontroller by an I C interface. This microcontroller has to calculate the temperature results based on the ADC values and the calibration parameters Features 0C up to +300C measurement ranges Small size Small field of view available Up to 1C accuracy 2 I C Interface Low current consumption Operating Temperature Range: -10C +85C Applications Contactless temperature measurement Climate control Industrial process control Household applications SENSOR SOLUTIONS /// DATASHEET TSD305 SERIES 05/2020 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 V --- -0.3 --- +3.63 V DD Storage temperature Tstor dry -20 --- +85 C Voltage at supply and IO pins V V --- -0.5 --- V +0.5 V DD IO DD Current into supply and IO pins I --- -100 --- 100 mA IN ESD rating ESD Human Body Model -2 --- +2 kV Humidity Hum --- Non condensing --- OPERATING CONDITIONS If not otherwise noted, 3.3V supply voltage is applied. Parameter Symbol Condition Min Typ Max Unit Operating supply voltage V stabilized, 100nF 1.68 --- 3.6 V DD VDD rise time t --- --- --- 200 s VDD Operating temperature T --- -20 --- +85 C op Resolution RES --- --- --- 0.1 C Active state, average --- 1050 1500 A Supply Current I VDD Sleep state, idle current --- 20 25 nA Serial data clock I2C F --- 10 100 400 kHz SCL Self-heating SH 1 sample/s, still air, 60s --- --- +0.2 C VDD capacitor C Place close to the sensor --- 100 --- nF VDD THERMOPILE COMPONENT If not otherwise noted, 3.3V supply voltage is applied. Parameter Symbol Condition Sensor Min Typ Max Unit --- Absorber area A --- 0.8 x 0.8 mm TSD305-1C55 At 50% of maximum signal TSD305-2C55 --- 88 --- deg TSD305-3C55 Field of view FOV TSD305-1SL10 --- 10 --- deg TSD305-1C55 Long wave pass TSD305-2C55 >5.5 m TSD305-3C55 Filter transmission range --- Silicon lens, no coating TSD305-1SL10 1.1 m SENSOR SOLUTIONS /// DATASHEET TSD305 SERIES 05/2020 Page 2