 |
Moteur de recherche de fiches techniques de composants électroniques |
|
|
Moteur de recherche de fiches techniques de composants électroniques |
|
TL052AIDR Fiches technique(PDF) 45 Page - Texas Instruments |
|
|
||||||||||||||||||||||||||||||
TL052AIDR Fiches technique(HTML) 45 Page - Texas Instruments |
|
|
45 / 68 page  TL05x, TL05xA ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS SLOS178A – FEBRUARY 1997 - REVISED FEBRUARY 2003 45 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 APPLICATION INFORMATION analog thermometer By combining a current source that does not vary over temperature with an instrumentation amplifier, a precise analog thermometer can be built (see Figure 89). Amplifier U1A and IC1 establish a constant current through the temperature-sensing diode D1. For this section of the circuit to operate correctly, the TL05x must use split supplies, and R3 must be a metal-film resistor with a low temperature coefficient. The temperature-sensitive voltage from the diode is compared to a temperature-stable voltage reference set by IC2. R4 should be adjusted to provide the correct output voltage when the diode is at a known temperature. Although this potentiometer resistance varies with temperature, the divider ratio of the potentiometer remains constant. Amplifiers U1B, U2A, and U2B form the instrumentation amplifier that converts the difference between the diode and reference voltage to a voltage proportional to the temperature. With switch S1 closed, the amplifier gain equals 5 and the output voltage is proportional to temperature in degrees Celsius. With S1 open, the amplifier gain is 9 and the output is proportional to temperature in degrees Fahrenheit. Every time S1 is changed, R4 must be recalibrated. By setting S1 correctly, the output voltage equals 10 mV per degree (C or F). + – IC1 C1 150 pF R1 100 k Ω U1A R3 10 k Ω (see Note B) D1 (see Note A) +15 V R2 100 k Ω IC2 R4 50 k Ω U1B R6 10 k Ω R5 5 k Ω R7 5 k Ω S1 (see Note C) R8 10 k Ω U2A R10 10 k Ω R11 R9 R12 10 k Ω 10 k Ω +15 V –15 V 10 k Ω VO (see Note D) U2B NOTES: A. Temperature-sensing diode ≈ (–2 mV/°C) B. Metal-film resistor (low temperature coefficient) C. Switch open for °F and closed for °C D. VO α temperature; 10 mV/°C or 10 mV/°F E. U1, U2 = TL05x. IC1, IC2 = LM385, LT1004, or LT1009 voltage reference Figure 89. Analog Thermometer |
Numéro de pièce similaire - TL052AIDR |
|
Description similaire - TL052AIDR |
|
|
Lien URL |
| Politique de confidentialité |
| ALLDATASHEET.FR |
| ALLDATASHEET vous a-t-il été utile ? [ DONATE ] |
À propos de Alldatasheet | Publicité | Contactez-nous | Politique de confidentialité | Echange de liens | Fabricants All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
French ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
