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thermopile infrared sensor TP336 microelectronics dept. 2000.05 1 / 8 features the thermopile sensor consists of a series of 116 thermoelement s, forming a sensitive region size of 545 m (diameter). the sensor is herme tically sealed into a to-5 metal housing, with an optical filter. this standard filter allows measurements to be made in the spectral range above 5 m wavelength. the thermosensor exhibits an almost white noise, comparable to an ohmic resistance. it has a constant signal versus frequency up to its frequency limit, and is directly propor tional to incident radiation. applications * ear thermometers; clinic thermometers * infrared thermometers * consumer applications: hair dryer, micr o-wave oven, air conditioner, refrigerator * continuous temperature control of manufacturing * security system * radiation monitor switch system * absorbing measurement for gas analysis * thermoelectric converter * heat flux flowmeter
thermopile infrared sensor TP336 microelectronics dept. 2000.05 2 / 8 electrical characteristics parameter condition min. typ. max. unit thermopile number of thermojunctions --- 116 --- chip size --- 1740*1740 --- m 2 active region size interference layer --- diameter 545 --- m thickness of substrate silicon- substrate 600 625 650 m resistance of thermopile 25 50 65 80 k ? sensitivity with 5-14 m filter 70 85 100 v/w detecctivity 1.0*10 8 1.3*10 8 1.7*10 8 cm*hz 1/2 /w time constant --- 16 --- ms noise voltage 28 32 36 nv/hz 1/2 nep 0.28 0.36 0.48 nw/hz 1/2 temperature range operation -20 --- 100 measured at 1 hz chopper frequenc y, within spectral range 5-14 m, using a blackbody radiator of 500k temperature. thermopile infrared sensor TP336 microelectronics dept. 2000.05 3 / 8 thermopile voltage vs. blackbody temperature frequency response thermopile infrared sensor TP336 microelectronics dept. 2000.05 4 / 8 field of view 1) window size: 2.57mm (diameter) 2) window size: 3.80mm (diameter) 336a 336e thermopile infrared sensor TP336 microelectronics dept. 2000.05 5 / 8 pin assignment & description 1 thermopile output pin (+) 3 thermopile output pin (-) order information : TP336 : a : standard filter (5-14 m), window size=2.57mm (diameter). b : silicon filter with flat band transmi ssion, window size=2.57mm (diameter). e : standard filter (5-14 m), window size=3.80mm (diameter). f : silicon filter with flat band transmi ssion, window size=3.80mm (diameter). thermopile 2(r) 3(v-) 1(v+) 4(gnd) backside view side view thermopile infrared sensor TP336 microelectronics dept. 2000.05 6 / 8 transmission of filter transmission of optical filter is measured by ftir from 2 m package the sensor is hermetically sealed into a to-5 metal housing, with an optical filter. this standard filter allows measurements to be made in the spectral range above 5 m wavelength. the dimensions of header and cap are shown below. thermopile infrared sensor TP336 microelectronics dept. 2000.05 7 / 8 TP336a TP336e cap header 0.43 2.00 unit: mm 4.6 chip window ir filter 3.80 8.17 unit: mm 2.0 0.43 4.6 chip cap header window ir filter 2.57 5.4 8.15 window ir filter ir filter wiindow thermopile infrared sensor TP336 microelectronics dept. 2000.05 8 / 8 application circuit circuit 1 : circuit 2 : c1 r1 c2 r2 2 4 r4 r3 + - 1 3 c3 c4 r5 r6 + op - c6 c5 vout +5v reference resistor thermopile r2 +5v + a1 - + a3 - + a2 - + - adder vout c3 r9 r8 c2 thermopile (-) thermopile (+) r1 r7 c1 2 4 r13 r10 r11 r12 +5v c4 reference resistor ambient temperature compensation circuit pre-amplification circuit 1 3 |
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