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參數(shù)資料
| 型號： | THS4130EVM |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | HIGH SPEED LOW NOISE, FULLY DIFFERENTIAL I/O AMPLIFIERS |
| 中文描述： | 高速低噪音，完全不同的I / O功放 |
| 文件頁數(shù)： | 16/27頁 |
| 文件大?。?/td> | 569K |
| 代理商： | THS4130EVM |
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SLOS318E MAY 2000 REVISED JANUARY 2004
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
data converters (continued)
Some single supply applications may require the input voltage to exceed the common-mode input voltage
range. In such cases, the following circuit configuration is suggested to bring the common-mode input voltage
within the specifications of the amplifier.
VIN
+
+
DVDD
VOCM
AVSS
AVDD
AIN2
AIN1
VDD
Vref
5 V
VCC
0.1
μ
F
RPU
RPU
VCC
THS1206
VCC
Rf
Rg
Rf
Rg
VP
VOUT
VOUT
Figure 32. Circuit With Improved Common-Mode Input Voltage
The following equation is used to calculate R
PU
:
RPU
VP– VCC
1
RG
VIN– VP
VOUT– VP
1
RF
driving a capacitive load
Driving capacitive loads with high performance amplifiers is not a problem as long as certain precautions are
taken. The first is to realize that the THS413x has been internally compensated to maximize its bandwidth and
slew rate performance. When the amplifier is compensated in this manner, capacitive loading directly on the
output will decrease the device’s phase margin leading to high frequency ringing or oscillations. Therefore, for
capacitive loads of greater than 10 pF, it is recommended that a resistor be placed in series with the output of
the amplifier, as shown in Figure 33. A minimum value of 20
should work well for most applications. For
example, in 50-
transmission systems, setting the series resistor value to 50
both isolates any capacitance
loading and provides the proper line impedance matching at the source end.
THS413x
Output
Output
20
20
390
390
390
390
Figure 33. Driving a Capacitive Load
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| THS4130ID | 功能描述:差分放大器 Ln Diff. In/Out RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 Channel 帶寬:2.4 GHz 可用增益調(diào)整:6 dB to 26 dB 輸入補償電壓: 共模抑制比（最小值）:- 40 dB 工作電源電壓:4.75 V to 5.25 V 電源電流:100 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:WQFN-24 封裝:Reel |
| THS4130ID | 制造商:Texas Instruments 功能描述:IC AMP DIFF SMD 4130 SOIC8 |
| THS4130IDG4 | 功能描述:差分放大器 Fully Differential I/O Low Noise RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 Channel 帶寬:2.4 GHz 可用增益調(diào)整:6 dB to 26 dB 輸入補償電壓: 共模抑制比（最小值）:- 40 dB 工作電源電壓:4.75 V to 5.25 V 電源電流:100 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:WQFN-24 封裝:Reel |
| THS4130IDGK | 功能描述:差分放大器 Fully Differential I/O Low Noise RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 Channel 帶寬:2.4 GHz 可用增益調(diào)整:6 dB to 26 dB 輸入補償電壓: 共模抑制比（最小值）:- 40 dB 工作電源電壓:4.75 V to 5.25 V 電源電流:100 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:WQFN-24 封裝:Reel |
| THS4130IDGKG4 | 功能描述:差分放大器 Fully Differential I/O Low Noise RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 Channel 帶寬:2.4 GHz 可用增益調(diào)整:6 dB to 26 dB 輸入補償電壓: 共模抑制比（最小值）:- 40 dB 工作電源電壓:4.75 V to 5.25 V 電源電流:100 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:WQFN-24 封裝:Reel |
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