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參數資料
| 型號： | THS4211DGK |
| 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： | GREEN, PLASTIC, MSOP-8 |
| 文件頁數： | 15/47頁 |
| 文件大小： | 1197K |
| 代理商： | THS4211DGK |
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_
+
THS4211
50
Source
392
_
+
-5 V
196
15 pF
392
196
24.9
15 pF
14-Bit, 62 Msps
ADS5422
(1:4
)
1:2
5 V
24.9
THS4211
VCM
_
+
THS4211
392
ADS807
12-Bit,
53 Msps
Rf
+5 V
392
49.9
VI
Rg
-5 V
50
Source
RISO
0.1
F
16.5
68 pf
0.1
F
IN
CM
1.82 k
RT
NOTE: For best performance, high-speed ADCs should be driven
differentially. See the THS4500 family of devices for more
information.
SLOS400E – SEPTEMBER 2002 – REVISED SEPTEMBER 2009 ................................................................................................................................... www.ti.com
Power-Supply Decoupling Techniques and
Recommendations
Power-supply decoupling is a critical aspect of any
high-performance amplifier design process. Careful
decoupling provides higher quality ac performance
(most notably, improved distortion performance). The
following guidelines ensure the highest level of
performance.
1. Place decoupling capacitors as close to the
power-supply inputs as possible, with the goal of
minimizing the inductance of the path from
ground to the power supply.
2. Placement priority should put the smallest valued
capacitors closest to the device.
3. Use of solid power and ground planes is
recommended to reduce the inductance along
power-supply return current paths, with the
exception of the areas underneath the input and
output pins.
Figure 78. A Linear, Low-Noise, High-Gain
4. Recommended
values
for
power-supply
ADC Preamplifier
decoupling include a bulk decoupling capacitor
(6.8 F to 22 F), a mid-range decoupling
The second circuit depicts single-ended ADC drive.
capacitor
(0.1
F)
and
a
high-frequency
While not recommended for optimum performance
decoupling capacitor (1000 pF) for each supply.
using converters with differential inputs, satisfactory
A 100-pF capacitor can be used across the
performance
can
sometimes
be
achieved
with
supplies as well for extremely high-frequency
single-ended input drive. An example circuit is shown
return currents, but often is not required.
in Figure 79 for reference.
APPLICATION CIRCUITS
Driving an Analog-to-Digital Converter with the
THS4211
The THS4211 can be used to drive high-performance
analog-to-digital converters. Two example circuits are
presented below.
The first circuit (in Figure 78) uses a wideband
transformer to convert a single-ended input signal into
a differential signal. The differential signal is then
amplified and filtered by two THS4211 amplifiers.
This circuit provides low intermodulation distortion,
suppressed even-order distortion, 14 dB of voltage
gain, a 50-
input impedance, and a single-pole filter
at 100 MHz. For applications without signal content at
dc, this method of driving ADCs can be very useful.
Figure 79. Driving an ADC With a
Where
dc
information
content
is
required,
the
Single-Ended Input
THS4500 family of fully differential amplifiers may be
applicable.
22
Copyright 2002–2009, Texas Instruments Incorporated
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相關代理商/技術參數 |
參數描述 |
|---|---|
| THS4211DGKG4 | 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 |
| THS4211DGKR | 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 |
| THS4211DGKRG4 | 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 |
| THS4211DGN | 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 |
| THS4211DGNG4 | 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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