參數(shù)資料
型號(hào)： THS4140CDGK
廠(chǎng)商： Texas Instruments, Inc.
英文描述： HIGH SPEED FULLY DIFFERENTIAL I/O AMPLIFIERS
中文描述： 高速全差分的I / O功放
文件頁(yè)數(shù)： 11/24頁(yè)
文件大?。?/td> 523K
代理商： THS4140CDGK
SLOS320E MAY 2000 REVISED JANUARY 2004
11
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
resistor matching
Resistor matching is important in fully differential amplifiers. The balance of the output on the reference voltage
depends on matched ratios of the resistors. CMRR, PSRR, and cancellation of the second harmonic distortion
will diminish if resistor mismatch occurs. Therefore, it is recommended to use 1% tolerance resistors or better
to keep the performance optimized.
V
OCM
sets the dc level of the output signals. If no voltage is applied to the V
OCM
pin, it will be set to the midrail
voltage internally defined as:
VCC
VCC–
2
In the differential mode, the V
OCM
on the two outputs cancel each other. Therefore, the output in the differential
mode is the same as the input in the gain of 1. V
OCM
has a high bandwidth capability up to the typical operation
range of the amplifier. For the prevention of noise going through the device, use a 0.1
μ
F capacitor on the V
OCM
pin as a bypass capacitor. The following graph shows the simplified diagram of the THS414x.
_
+
x1
Output Buffer
Vcm Error
Amplifier
C
R
C
R
x1
Output Buffer
VCC+
VOUT+
VOUT
VCC+
VCC
VIN
VIN+
30 k
30 k
VCC
VOCM
Figure 21. THS414x Simplified Diagram
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參數(shù)描述
THS4140CDGKG4 功能描述:特殊用途放大器 Fully Diff I/O High Slew Rate RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel
THS4140CDGKR 功能描述:特殊用途放大器 Fully Diff I/O High Slew Rate RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel
THS4140CDGKRG4 功能描述:特殊用途放大器 Fully Diff I/O High Slew Rate RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel
THS4140CDGN 功能描述:特殊用途放大器 Fully Diff I/O High Slew Rate RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel
THS4140CDGNG4 功能描述:特殊用途放大器 Fully Diff I/O High Slew Rate RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel
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