- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384001 > TL054AMD (Texas Instruments, Inc.) ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS PDF資料下載
參數(shù)資料
| 型號： | TL054AMD |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS |
| 中文描述： | 增強型場效應低失調(diào)運算放大器 |
| 文件頁數(shù)： | 60/65頁 |
| 文件大小： | 1022K |
| 代理商： | TL054AMD |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁當前第60頁第61頁第62頁第63頁第64頁第65頁
TL05x, TL05xA, TL05xY
ENHANCED-JFET LOW-OFFSET
OPERATIONAL AMPLIFIERS
SLOS178 – FEBRUARY 1997
60
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 that S1 is changed,
R4 must be recalibrated. By setting S1 correctly, the output voltage equals 10 mV per degree (C or F).
+
–
U1A
+
–
+
–
IC1
C1
150 pF
R1
100 k
R3
10 k
(see Note B)
D1
(see Note A)
+15 V
R2
100 k
IC2
R4
50 k
U1B
R6
10 k
R5
5 k
R7
5 k
S1
(see Note C)
R8
10 k
U2A
R10
10 k
R11
10 k
R9
R12
10 k
10 k
+15 V
+
–
U2B
–15 V
VO
(see Note D)
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
相關PDF資料 |
PDF描述 |
|---|---|
| TL054AMJ | ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS |
| TL054AMN | ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS |
| TL051AMD | ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS |
| TL052MP | ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS |
| TL052Y | ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TL054AMFK | 制造商:TI 制造商全稱:Texas Instruments 功能描述:ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS |
| TL054AMFKB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS |
| TL054AMJ | 制造商:TI 制造商全稱:Texas Instruments 功能描述:ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS |
| TL054AMJB | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TL054AMN | 制造商:TI 制造商全稱:Texas Instruments 功能描述:ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS |
發(fā)布緊急采購，3分鐘左右您將得到回復。