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參數資料
| 型號： | THS4275DGNRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
| 封裝： | POWERPAD, PLASTIC, MSOP-8 |
| 文件頁數： | 18/49頁 |
| 文件大小： | 1515K |
| 代理商： | THS4275DGNRG4 |
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49.9
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VI+
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+
49.9
100
VO
499
249
249
100
VI
_
+
100
VO
VI+
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+
Rg1
Rf1
100
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+
Rf2
49.9
Rf1
Rg2
Rf2
49.9
THS4271
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2
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R
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www.ti.com
SLOS397F – JULY 2002 – REVISED OCTOBER 2009
A Low-Noise Receiver With the THS4271
THEORY AND GUIDELINES
A combination of two THS4271 amplifiers can create
Distortion Performance
a high-speed, low-distortion, low-noise differential
receiver circuit as depicted in Figure 83. With both
The
THS4271
provides
excellent
distortion
amplifiers operating in the noninverting mode of
performance into a 150-
load. Relative to alternative
operation, the circuit presents a high load impedance
solutions, it provides exceptional performance into
to the source. The designer has the option of
lighter loads, as well as exceptional performance on a
controlling
the
impedance
through
termination
single 5-V supply. Generally, until the fundamental
resistors if a matched termination impedance is
signal reaches very high frequency or power levels,
desired.
the second harmonic dominates the total harmonic
distortion with a negligible third harmonic component.
Focusing then on the second harmonic, increasing
the load impedance improves distortion directly. The
total load includes the feedback network; in the
noninverting configuration (Figure 75) this is the sum
of Rf and Rg, while in the inverting configuration
with the actual load.
LINEARITY: DEFINITIONS, TERMINOLOGY,
CIRCUIT TECHNIQUES, AND DESIGN
TRADEOFFS
The
THS4271
features
excellent
distortion
performance for monolithic operational amplifiers.
This
section
focuses
on
the
fundamentals
of
Figure 83. A High Input Impedance, Low-Noise,
distortion, circuit techniques for reducing nonlinearity,
Differential Receiver
and methods for equating distortion of operational
amplifiers to desired linearity specifications in RF
receiver chains.
A modification on this circuit to include a difference
amplifier
turns
this
circuit
into
a
high-speed
Amplifiers are generally thought of as linear devices.
instrumentation amplifier, as shown in Figure 84.
The output of an amplifier is a linearly-scaled version
Equation 1 calculates the output voltage for this
of the input signal applied to it. However, amplifier
circuit.
transfer functions are nonlinear. Minimizing amplifier
nonlinearity is a primary design goal in many
applications.
Figure 84. A High-Speed Instrumentation
Amplifier
(1)
space
Copyright 2002–2009, Texas Instruments Incorporated
25
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相關代理商/技術參數 |
參數描述 |
|---|---|
| THS4275DR | 功能描述:高速運算放大器 Super-Fast Ultra-Low Distortion Hi-Speed RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS4275DRBR | 功能描述:高速運算放大器 Super-Fast Ultra-Low Distortion Hi-Speed RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS4275DRBRG4 | 功能描述:高速運算放大器 Super-Fast Ultra-Low Distortion Hi-Speed RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS4275DRBT | 功能描述:高速運算放大器 Super-Fast Ultra-Low Distortion Hi-Speed RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS4275DRBTG4 | 功能描述:高速運算放大器 Super-Fast Ultra-Low Distortion Hi-Speed RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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