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參數(shù)資料
| 型號： | THS4211DRB |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | LOW-DISTORTION HIGH-SPEED VOLTAGE FEEDBACK AMPLIFIER |
| 中文描述： | 低失真高速電壓反饋型放大器 |
| 文件頁數(shù)： | 19/41頁 |
| 文件大小： | 1591K |
| 代理商： | THS4211DRB |
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APPLICATION INFORMATION
HIGH-SPEED OPERATIONAL AMPLIFIERS
The THS4211 and the THS4215 operational ampli-
fiers set new performance levels, combining low
distortion, high slew rates, low noise, and a unity-gain
bandwidth in excess of 1 GHz. To achieve the full
performance of the amplifier, careful attention must
be paid to printed-circuit board layout and component
selection.
Applications Section Contents
Wideband, Noninverting Operation
Wideband, Inverting Gain Operation
Single Supply Operation
Saving Power With Power-Down Functionality
and Setting Threshold Levels With the Reference
Pin
Power
Supply
Decoupling
Recommendations
Using the THS4211 as a DAC Output Buffer
Driving an ADC With the THS4211
Active Filtering With the THS4211
Building a Low-Noise Receiver With the THS4211
Linearity:
Definitions,
Techniques and Design Tradeoffs
An Abbreviated Analysis of Noise in Amplifiers
Driving Capacitive Loads
Printed-Circuit
Board
Optimal Performance
Power Dissipation and Thermal Considerations
Performance vs Package Options
Evaluation
Fixtures,
Applications Support
Additional Reference Material
Mechanical Package Drawings
+
THS4211
R
f
392
49.9
100 pF
0.1
μ
F
6.8
μ
F
+
-V
S
-5 V
R
g
50
Source
V
I
100 pF
0.1
μ
F
6.8
μ
F
+
+V
S
5 V
V
O
499
392
WIDEBAND, INVERTING GAIN OPERATION
Since
the
THS4211
eral-purpose, wideband voltage-feedback amplifiers,
several familiar operational-amplifier applications cir-
cuits are available to the designer. Figure 76 shows a
typical inverting configuration where the input and
output impedances and noise gain from Figure 75 are
retained in an inverting circuit configuration. Inverting
operation is a common requirement and offers sev-
eral performance benefits. The inverting configuration
shows improved slew rates and distortion due to the
pseudo-static voltage maintained on the inverting
input.
WIDEBAND, NONINVERTING OPERATION
The THS4211 and the THS4215 are unity-gain,
stable 1-GHz voltage-feedback operational amplifiers,
with and without power-down capability, designed to
operate from a single 5-V to 15-V power supply.
THS4211
THS4215
SLOS400D–SEPTEMBER 2002–REVISED NOVEMBER 2004
with measurement equipment presenting a 50-
load
impedance. In Figure 75, the 49.9-
shunt resistor at
the V
IN
terminal matches the source impedance of the
test generator. The total 499-
load at the output,
combined with the 784-
total feedback-network
load, presents the THS4211 and THS4215 with an
effective output load of 305
for the circuit shown in
Figure 75.
Voltage-feedback amplifiers, unlike current-feedback
designs, can use a wide range of resistors values to
set their gain with minimal impact on their stability
and frequency response. Larger-valued resistors de-
crease the loading effect of the feedback network on
the output of the amplifier, but this enhancement
comes at the expense of additional noise and poten-
tially lower bandwidth. Feedback-resistor values be-
tween 392
and 1 k
are recommended for most
applications.
The THS4215 provides a power-down mode, provid-
ing the ability to save power when the amplifier is
inactive. A reference pin is provided to allow the user
the flexibility to control the threshold levels of the
Techniques
and
Terminology,
Circuit
Figure 75. Wideband, Noninverting Gain
Configuration
Layout
Techniques
for
and
THS4215
are
gen-
Spice
Models,
and
Figure 75 shows the noninverting-gain configuration
of 2 V/V used to demonstrate the typical performance
curves. Most of the curves were characterized using
signal sources with 50-
source impedances, and
19
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| THS4211DRBR | 功能描述:高速運算放大器 Super-Fast Ultr-Lo- Distortion Hi-Speed RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉(zhuǎn)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 |
| THS4211DRBRG4 | 功能描述:高速運算放大器 Super-Fast Ultr-Lo- Distortion Hi-Speed RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉(zhuǎn)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 |
| THS4211DRBT | 功能描述:高速運算放大器 Super-Fast Ultr-Lo- Distortion Hi-Speed RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉(zhuǎn)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 |
| THS4211DRBTG4 | 功能描述:高速運算放大器 Super-Fast Ultr-Lo- Distortion Hi-Speed RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉(zhuǎn)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 |
| THS4211DRG4 | 功能描述:高速運算放大器 Super-Fast Ultr-Lo- Distortion Hi-Speed RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉(zhuǎn)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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