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参数资料
| 型号： | THS4211DRB |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
| 封装： | PLASTIC, MSOP-8 |
| 文件页数： | 14/40页 |
| 文件大小： | 1013K |
| 代理商： | THS4211DRB |
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THS4211
THS4215
SLOS400C SEPTEMBER 2002 REVISED JANUARY 2004
www.ti.com
21
_
+
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
Figure 78. 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 perfor-
mance can sometimes be achieved with single-ended
input drive. An example circuit is shown here for reference.
_
+
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.
Figure 79. Driving an ADC With a
Single-Ended Input
Using the THS4211 as a DAC Output Buffer
Two example circuits are presented here showing the
THS4211 buffering the output of a digital-to-analog
converter. The first circuit performs a differential to
single-ended conversion with the THS4211 configured as
a difference amplifier. The difference amplifier can double
as the termination mechanism for the DAC outputs as well.
392
_
+
THS4211
49.9
100
392
100
+5 V
5 V
14-Bit,
400 MSps
DAC5675
RF
LO
196
392
392
3.3 V
Figure 80. Differential to Single-Ended
Conversion of a High-Speed DAC Output
For cases where a differential signaling path is desirable,
a pair of THS4211 amplifiers can be used as output
buffers. The circuit depicts differential drive into a mixer’s
IF inputs, coupled with additional signal gain and filtering.
392
_
+
49.9
100
100
14-Bit,
400 MSps
DAC5675
3.3 V
CF
1 nF
392
49.9
1 nF
CF
392
392
_
+
THS4211
RF(out)
IF+
IF
100
1 nF
Figure 81. Differential Mixer Drive Circuit Using
the DAC5675 and the THS4211
Active Filtering With the THS4211
High-frequency active filtering with the THS4211 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 100 MHz.
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| THS4215DGNR | 1 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| THS4211DRBR | 功能描述:高速运算放大器 Super-Fast Ultr-Lo- Distortion Hi-Speed 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 |
| THS4211DRBRG4 | 功能描述:高速运算放大器 Super-Fast Ultr-Lo- Distortion Hi-Speed 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 |
| THS4211DRBT | 功能描述:高速运算放大器 Super-Fast Ultr-Lo- Distortion Hi-Speed 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 |
| THS4211DRBTG4 | 功能描述:高速运算放大器 Super-Fast Ultr-Lo- Distortion Hi-Speed 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 |
| THS4211DRG4 | 功能描述:高速运算放大器 Super-Fast Ultr-Lo- Distortion Hi-Speed 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 |
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