поискавой системы для электроныых деталей |
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TMP35 датащи(PDF) 9 Page - Analog Devices |
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TMP35 датащи(HTML) 9 Page - Analog Devices |
9 / 16 page REV. C TMP35/TMP36/TMP37 –9– The circuit in Figure 6b illustrates how a pair of TMP3x sensors can be used with an OP193 configured as a difference amplifier to read the difference in temperature between two locations. In these applications, it is always possible that one temperature sensor would be reading a temperature below that of the other sensor. To accommodate this condition, the output of the OP193 is offset to a voltage at one-half the supply via R5 and R6. Thus, the output voltage of the circuit is measured relative to this point, OP193 0.1 F 2 3 4 1 7 VTEMP(AVG) @ 10mV/ C FOR TMP35/36 @ 20mV/ C FOR TMP35/36 2.7V < +VS < 5.5V FOR R1 = R2 = R3 = R; VTEMP(AVG) = 1 (TMP3x1 + TMP3x2 + TMP3x3) 3 R1 300k R2 300k R3 300k TMP3x TMP3x TMP3x R4 7.5k R1 3 R4 = R6 R6 7.5k R5 100k R5 = Figure 6a. Configuring Multiple Sensors for Average Temperature Measurements ELEMENT R2 R4 R5 R6 TMP36 VOUT R1 50k VS ADM660 TMP36 OP193 R2 50k R3 R4 +3V C1 10 F R5 0.1 F 10 F –3V 10 F/0.1 F GND NC 10 F NC R6 1 2 3 4 5 6 7 2 3 4 6 8 8 VOUT @ 1mV/ F –40 F TA +257 F 258.6k 10k 47.7k 10k Figure 5c. TMP36 Fahrenheit Thermometer Version 2 as shown in the figure. Using the TMP36, the output voltage of the circuit is scaled by 10 mV/ °C. To minimize error in the differ- ence between the two measured temperatures, a common, readily available thin-film resistor network is used for R1–R4. TMP36 @ T1 0.1 F 0.1 F 2 3 4 6 7 OP193 1 F VOUT R3* R4* R2* R1* 2.7V < VS < 5.5V TMP36 @ T2 R5 100k R6 100k VOUT = T2 – T1 @ 10mV/ C VS 2 *R1–R4, CADDOCK T914–100k–100, OR EQUIVALENT 0.1 F R7 100k R8 25k R9 25k 0 TA 125 C CENTERED AT CENTERED AT Figure 6b. Configuring Multiple Sensors for Differential Temperature Measurements |
Аналогичный номер детали - TMP35 |
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Аналогичное описание - TMP35 |
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