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| 型號： | TLV2231CDBV |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Advanced LinCMOSE RAIL-TO-RAIL LOW-POWER SINGLE OPERATIONAL AMPLIFIERS |
| 中文描述： | 高級LinCMOSE軌至軌低功率運(yùn)算放大器 |
| 文件頁數(shù)： | 25/27頁 |
| 文件大小： | 585K |
| 代理商： | TLV2231CDBV |
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TLV2231, TLV2231Y
Advanced LinCMOS
RAIL-TO-RAIL
LOW-POWER SINGLE OPERATIONAL AMPLIFIERS
SLOS158C – JUNE 1996 – REVISED SEPTEMBER 1997
25
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
driving large capacitive loads
The TLV2231 is designed to drive larger capacitive loads than most CMOS operational amplifiers. Figure 50
through Figure 55 illustrate its ability to drive loads greater than 100 pF while maintaining good gain and phase
margins (R
null
= 0).
A small series resistor (R
null
) at the output of the device (see Figure 56) improves the gain and phase margins
when driving large capacitive loads. Figure 50 through Figure 53 show the effects of adding series resistances
of 50
, 100
, 500
, and 1000
. The addition of this series resistor has two effects: the first effect is that
it adds a zero to the transfer function and the second effect is that it reduces the frequency of the pole associated
with the output load in the transfer function.
The zero introduced to the transfer function is equal to the series resistance times the load capacitance. To
calculate the approximate improvement in phase margin, equation 1 can be used.
φ
m1
tan
–1
2
×
π
×
UGB
W
×
Rnull
×
CL
φ
m1
UGBW
R
null
improvement in phase margin
unity-gain bandwidth frequency
output series resistance
load capacitance
C
L
(1)
where :
The unity-gain bandwidth (UGBW) frequency decreases as the capacitive load increases (see Figure 54 and
Figure 55). To use equation 1, UGBW must be approximated from Figure 54 and Figure 55.
VDD–/GND
VDD+
Rnull
CL
VI
+
–
RL
Figure 56. Series-Resistance Circuit
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TLV2231CDBVR | 功能描述:運(yùn)算放大器 - 運(yùn)放 Low Power R/R 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 |
| TLV2231CDBVRG4 | 功能描述:運(yùn)算放大器 - 運(yùn)放 Single LinCMOS Rail-To-Rail uPower 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 |
| TLV2231CDBVT | 功能描述:運(yùn)算放大器 - 運(yùn)放 Single LinCMOS R/R 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 |
| TLV2231CDBVTG4 | 功能描述:運(yùn)算放大器 - 運(yùn)放 Single LinCMOS R/R 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 |
| TLV2231IDBV | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Advanced LinCMOSE RAIL-TO-RAIL LOW-POWER SINGLE OPERATIONAL AMPLIFIERS |
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