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| 型号： | TLV2231(中文) |
| 厂商： | Texas Instruments, Inc. |
| 英文描述： | Single LINCMOS Rail-To-Rail Micropower OP AMP(单路满电源幅度，微功耗运放) |
| 中文描述： | 单LINCMOS轨至轨微功率运算放大器（单路满电源幅度，微功耗运放） |
| 文件页数： | 27/30页 |
| 文件大小： | 833K |
| 代理商： | TLV2231(中文) |
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TLV2231, TLV2231Y
Advanced LinCMOS
RAIL-TO-RAIL
LOW-POWER SINGLE OPERATIONAL AMPLIFIERS
SLOS158 – JUNE 1996
27
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 49
– Figure 54 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 55) improves the gain and phase margins
when driving large capacitive loads. Figure 49 – Figure 52 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 53 and
Figure 54). To use equation (1), UGBW must be approximated from Figure 53 and Figure 54.
VDD–/GND
VDD+
Rnull
CL
VI
+
–
RL
Figure 55. Series-Resistance Circuit
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| TLV2322Y | LinCMOSE LOW-VOLTAGE LOW-POWER OPERATIONAL AMPLIFIERS |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TLV2231_08 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Advanced LinCMOS?￡a RAIL-TO-RAIL LOW-POWER SINGLE OPERATIONAL AMPLIFIERS |
| TLV2231CDBV | 制造商:TI 制造商全称:Texas Instruments 功能描述:Advanced LinCMOSE RAIL-TO-RAIL LOW-POWER SINGLE OPERATIONAL AMPLIFIERS |
| TLV2231CDBVR | 功能描述:运算放大器 - 运放 Low Power R/R RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| TLV2231CDBVRG4 | 功能描述:运算放大器 - 运放 Single LinCMOS Rail-To-Rail uPower RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| TLV2231CDBVT | 功能描述:运算放大器 - 运放 Single LinCMOS R/R RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
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