參數(shù)資料
型號： TL052AMP
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(yīng)低失調(diào)運算放大器
文件頁數(shù)： 58/65頁
文件大小： 1022K
代理商： TL052AMP
TL05x, TL05xA, TL05xY
ENHANCED-JFET LOW-OFFSET
OPERATIONAL AMPLIFIERS
SLOS178 – FEBRUARY 1997
58
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
instrumentation amplifier with adjustable gain/null
The instrumentation amplifier in Figure 86 benefits greatly from the high input impedance and stable input offset
voltage of the TL05xA. Amplifiers U1A, U1B, and U2A form the actual instrumentation amplifier, while U2B
provides offset null. Potentiometer R1 provides gain adjust. With R1 = 2 k
, the circuit gain equals 100, while
with R1 = 200 k
, the circuit gain equals two. The following equation shows the instrumentation amplifier gain
as a function of R1:
R2
R3
R1
A
V
1
Readjusting the offset null is necessary whenever the circuit gain is changed. If U2B is needed for another
application, R7 can be terminated at ground. The low input offset voltage of the TL05xA minimizes the dc error
of the circuit. For best matching, all resistors should be one percent tolerance. The matching between R4, R5,
R6, and R7 controls the CMRR of this application.
The following equation shows the output voltages when the input voltage equals zero. This dc error can be
nulled by adjusting the offset null potentiometer; however, any change in offset voltage over time or temperature
also creates an error. To calculate the error from changes in offset, consider the three offset components in the
equation as delta offsets rather than initial offsets. The improved stability of Texas Instruments enhanced JFETs
minimizes the error resulting from change in input offset voltage with time. Assuming V
I
equals zero, V
O
can
be shown as a function of the offset voltage:
–VIO1
R3
R1
R7
R5
R7
1
R6
R4
R6
R4
1
R2
R1
VIO3
1
R6
R4
VO
VIO2
1
R3
R1
R7
R5
R7
1
R6
R4
R2
R1
R6
R4
NOTE A: U1 and U2 = TL05xA; VCC
±
=
±
15 V.
100 k
U2A
+
+
–
+
–
+
–
–
VI–
U1A
R4
10 k
R6
10 k
200 k
10 turn
R2
10 M
100 k
AV = 2 to 100
2 k
R1
U1B
VI+
R5
R7
U2B
0.1
μ
F
Offset Null
VCC–
82 k
82 k
VCC+
R3
VO
10 k
10 k
10 M
1 k
Figure 86. Instrumentation Amplifier
相關(guān)PDF資料
PDF描述
TL052MD ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS
TL052MFK ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS
TL054AMD ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS
TL054AMJ ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS
TL054AMN ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TL052C 制造商:TI 制造商全稱:Texas Instruments 功能描述:ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS
TL052CD 功能描述:運算放大器 - 運放 Enhanced Prec D RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
TL052CDE4 功能描述:運算放大器 - 運放 Dual Enhanced JFET Precision RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
TL052CDG4 功能描述:運算放大器 - 運放 Dual Enh JFET Prec Op Amp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
TL052CDR 功能描述:運算放大器 - 運放 Dual Enhanced JFET Precision RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*