參數(shù)資料
型號(hào)： TLC2652AI14D
廠商： Texas Instruments, Inc.
英文描述： Advanced LinCMOSE PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS
中文描述： 高級(jí)LinCMOSE精密斬波穩(wěn)定運(yùn)算放大器
文件頁(yè)數(shù)： 24/31頁(yè)
文件大?。?/td> 453K
代理商： TLC2652AI14D
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS
PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
24
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
theory of operation (continued)
During the amplifying phase, switch B is closed connecting the output of the nulling amplifier to a noninverting
input of the main amplifier. In this configuration, the input offset voltage of the main amplifier is nulled. Also,
external capacitor C
XB
stores the nulling potential to allow the offset voltage of the main amplifier to remain
nulled during the next nulling phase.
This continuous chopping process allows offset voltage nulling during variations in time and temperature over
the common-mode input voltage range and power supply range. In addition, because the low-frequency signal
path is through both the null and main amplifiers, extremely high gain is achieved.
The low-frequency noise of a chopper amplifier depends on the magnitude of the component noise prior to
chopping and the capability of the circuit to reduce this noise while chopping. The use of the Advanced LinCMOS
process, with its low-noise analog MOS transistors and patent-pending input stage design, significantly reduces
the input noise voltage.
The primary source of nonideal operation in chopper-stabilized amplifiers is error charge from the switches. As
charge imbalance accumulates on critical nodes, input offset voltage can increase, especially with increasing
chopping frequency. This problem has been significantly reduced in the TLC2652 by use of a patent-pending
compensation circuit and the Advanced LinCMOS process.
The TLC2652 incorporates a feed-forward design that ensures continuous frequency response. Essentially, the
gain magnitude of the nulling amplifier and compensation network crosses unity at the break frequency of the
main amplifier. As a result, the high-frequency response of the system is the same as the frequency response
of the main amplifier. This approach also ensures that the slewing characteristics remain the same during both
the nulling and amplifying phases.
相關(guān)PDF資料
PDF描述
TLC2652AI8D Advanced LinCMOSE PRECISION CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS
TLC2654(中文) Adanced LinCMOS low-Noise Chopper-Stabilized Operationsl Amplifiers(先進(jìn)的LINCMOS低噪聲斬波穩(wěn)定運(yùn)放)
TLC2654AC14D Advanced LinCMOSE LOW-NOISE CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS
TLC2654AC8D Advanced LinCMOSE LOW-NOISE CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS
TLC2654AI14D Advanced LinCMOSE LOW-NOISE CHOPPER-STABILIZED OPERATIONAL AMPLIFIERS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLC2652AI-14D 功能描述:運(yùn)算放大器 - 運(yùn)放 Adv LinCMOS Prec Chopper-Stabilized 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(bǔ)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
TLC2652AI-14DG4 功能描述:運(yùn)算放大器 - 運(yùn)放 Adv LinCMOS Prec Chopper-Stabilized 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(bǔ)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
TLC2652AI-8D 功能描述:運(yùn)算放大器 - 運(yùn)放 Adv Prec. Chopper 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(bǔ)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
TLC2652AI-8DG4 功能描述:運(yùn)算放大器 - 運(yùn)放 Adv Prec. Chopper 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(bǔ)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
TLC2652AI-8DR 功能描述:運(yùn)算放大器 - 運(yùn)放 Adv LinCMOS Prec Chopper-Stabilized 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(bǔ)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
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