- 您现在的位置：买卖IC网 > PDF目录98226 > THS4222DGK (TEXAS INSTRUMENTS INC) 1 CHANNEL, VIDEO PREAMPLIFIER, PDSO8 PDF资料下载
参数资料
| 型号： | THS4222DGK |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1 CHANNEL, VIDEO PREAMPLIFIER, PDSO8 |
| 封装： | GREEN, PLASTIC, MSOP-8 |
| 文件页数： | 9/38页 |
| 文件大小： | 1219K |
| 代理商： | THS4222DGK |
第1页第2页第3页第4页第5页第6页第7页第8页当前第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页
THS4221, THS4225
THS4222, THS4226
SLOS399G AUGUST 2002 REVISED JANUARY 2004
www.ti.com
17
APPLICATION CIRCUITS
Driving an Analog-to-Digital Converter With the
THS4222
The THS4222 can be used to drive high-performance
analog-to-digital converters. Two example circuits are
presented below.
The first circuit 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
THS4222
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 25 MHz. For applications without
signal content at dc, this method of driving ADCs can be
very useful. Where dc information content is required, the
THS4500 family of fully differential amplifiers may be
applicable.
_
+
THS4222
50
Source
1.3 k
_
+
THS4222
5 V
649
4.7 pF
1.3 k
649
24.9
4.7 pF
12-Bit, 53 Msps
ADS807
(1:4 )
1:2
5 V
24.9
237
Figure 32. A Linear, Low Noise, High Gain ADC
Preamplifier
The second circuit depicts single-ended ADC drive. While
not recommended for optimum performance using
converters
with
differential
inputs,
satisfactory
performance
can
sometimes
be
achieved
with
single-ended input drive. An example circuit is shown here
for reference.
_
+
THS4222
1.3 k
ADS807
12-Bit,
53 Msps
Rf
+5 V
1.3 k
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.
Figure 33. Driving an ADC With a
Single-Ended Input
Active Filtering With the THS4222
High-frequency active filtering with the THS4222 is
achievable due to the amplifier’s high slew rate, wide
bandwidth, and voltage feedback architecture. Several
options are available for high-pass, low-pass, bandpass,
and bandstop filters of varying orders. A simple two-pole
low pass filter is presented here as an example, with two
poles at about 25 MHz.
_
+
THS4222
49.9
50 Source
1.3 k
4.7 pF
5 V
120 pF
VO
1.3 k
52.3
VI
Figure 34. A Two-Pole Active Filter With Two
Poles at about 25 MHz
相关PDF资料 |
PDF描述 |
|---|---|
| THS4222DGKR | 1 CHANNEL, VIDEO PREAMPLIFIER, PDSO8 |
| THS4222D | 1 CHANNEL, VIDEO PREAMPLIFIER, PDSO8 |
| THS4222DR | 1 CHANNEL, VIDEO PREAMPLIFIER, PDSO8 |
| THS4222DGN | 1 CHANNEL, VIDEO PREAMPLIFIER, PDSO8 |
| THS4222DGNR | 1 CHANNEL, VIDEO PREAMPLIFIER, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| THS4222DGKG4 | 功能描述:高速运算放大器 Low-Distortion High- Speed R-to-R Output RoHS:否 制造商:Texas Instruments 通道数量:1 电压增益 dB:116 dB 输入补偿电压:0.5 mV 转换速度:55 V/us 工作电源电压:36 V 电源电流:7.5 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| THS4222DGKR | 功能描述:高速运算放大器 Low-Distortion High- Speed R-to-R Output RoHS:否 制造商:Texas Instruments 通道数量:1 电压增益 dB:116 dB 输入补偿电压:0.5 mV 转换速度:55 V/us 工作电源电压:36 V 电源电流:7.5 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| THS4222DGKRG4 | 功能描述:高速运算放大器 Low-Distortion High- Speed R-to-R Output RoHS:否 制造商:Texas Instruments 通道数量:1 电压增益 dB:116 dB 输入补偿电压:0.5 mV 转换速度:55 V/us 工作电源电压:36 V 电源电流:7.5 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| THS4222DGN | 功能描述:高速运算放大器 Low-Distortion High- Speed R-to-R Output RoHS:否 制造商:Texas Instruments 通道数量:1 电压增益 dB:116 dB 输入补偿电压:0.5 mV 转换速度:55 V/us 工作电源电压:36 V 电源电流:7.5 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| THS4222DGN | 制造商:Texas Instruments 功能描述:OP AMP DUAL LOW DIST RRO/P 8MSOP |
发布紧急采购，3分钟左右您将得到回复。