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參數資料
| 型號： | THS4271DGKRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 CHANNEL, VIDEO PREAMPLIFIER, PDSO8 |
| 封裝： | GREEN, PLASTIC, MSOP-8 |
| 文件頁數： | 17/48頁 |
| 文件大小： | 1227K |
| 代理商： | THS4271DGKRG4 |
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+
THS4271
249
ADS807
12-Bit,
53 Msps
Rf
+5 V
249
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
249
_
+
49.9
100
100
14-Bit,
400 MSps
DAC5675
3.3 V
CF
1 nF
249
49.9
1 nF
CF
249
249
_
+
THS4271
RF(out)
IF+
IF-
100
1 nF
249
_
+
THS4271
49.9
100
249
100
+5 V
-5 V
14-Bit,
400 MSps
DAC5675
RF
LO
124
249
249
3.3 V
_
+
THS4271
49.9
50
Source
249
6.8
pF
5 V
33 pF
VO
249
61.9
VI
SLOS397F – JULY 2002 – REVISED OCTOBER 2009
www.ti.com
For best performance, high-speed ADCs should be driven
differentially. See the THS4500 family of devices for more
information.
Figure 79. Driving an ADC With a
Single-Ended Input
Figure 81. Differential Mixer Drive Circuit
Using the DAC5675 and the THS4271
Using the THS4271 as a DAC Output Buffer
Two example circuits are presented here showing the
Active Filtering With the THS4271
THS4271 buffering the output of a digital-to-analog
converter. The first circuit performs a differential to
High-frequency active filtering with the THS4271 is
single-ended
conversion
with
the
THS4271
achievable due to the amplifier high slew-rate, wide
configured as a difference amplifier. The difference
bandwidth,
and
voltage-feedback
architecture.
amplifier can double as the termination mechanism
Several options are available for high-pass, low-pass,
for the DAC outputs as well.
bandpass, and bandstop filters of varying orders. A
simple two-pole low pass filter is presented here as
an example, with two poles at 100 MHz.
Figure 80. Differential to Single-Ended
Conversion of a High-Speed DAC Output
Figure 82. A Two-Pole Active Filter With Two
Poles Between 90 MHz and 100 MHz
For cases where a differential signaling path is
desirable, a pair of THS4271 amplifiers can be used
as output buffers. The circuit depicts differential drive
into a mixer IF inputs, coupled with additional signal
gain and filtering.
24
Copyright 2002–2009, Texas Instruments Incorporated
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相關代理商/技術參數 |
參數描述 |
|---|---|
| THS4271DGN | 功能描述:高速運算放大器 Super-Fast Ultra-Low Distortion 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 |
| THS4271DGN | 制造商:Texas Instruments 功能描述:IC SM OP-AMP HI-SPEED VFB |
| THS4271DGN | 制造商:Texas Instruments 功能描述:OP AMP HIGH SPEED VFB HTSSOP 427 |
| THS4271DGNG4 | 功能描述:高速運算放大器 Super-Fast Ultra-Low Distortion 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 |
| THS4271DGNR | 功能描述:高速運算放大器 Super-Fast Ultra-Low Distortion 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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