参数资料
型号: THS4601CDDAR
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: GREEN, PLASTIC, SOP-8
文件页数: 9/34页
文件大小: 826K
代理商: THS4601CDDAR
THS4601
SLOS388B OCTOBER 2001 REVISED JUNE 2002
17
www.ti.com
APPLICATION INFORMATION
alternative transimpedance configurations
Other transimpedance configurations are possible. Three possibilities are shown below.
The first configuration is a slight modification of the basic transimpedance circuit. By splitting the feedback
resistor, the feedback capacitor value becomes more manageable and easier to control. This type of
compensation scheme is useful when the feedback capacitor required in the basic configuration becomes so
small that the parasitic effects of the board and components begin to dominate the total feedback capacitance.
By reducing the resistance across the capacitor, the capacitor value can be increased. This mitigates the
dominance of the parasitic effects.
_
+
CF
RF2
RL
RF1
VBias
λ
NOTE: Splitting the feedback resistor enables use of a larger, more manageable feedback
capacitor.
Figure 33. Alternative Transimpedance Configuration #1
The second configuration uses a resistive T-network to achieve very high transimpedance gains using relatively
small resistor values. This topology can be very useful when the desired transimpedance gain exceeds the
value of available resistors. The transimpedance gain is given by equation 3.
R
EQ +
R
F1 1 )
R
F2
R
F3
_
+
CF
RF2
RL
RF1
VBias
RF3
λ
NOTE: A resistive T-network enables high transimpedance gain with reasonable resistor values.
Figure 34. Alternative Transimpedance Configuration #2
(3)
相关PDF资料
PDF描述
THS4601CDDA 1 CHANNEL, VIDEO AMPLIFIER, PDSO8
THS4601CDR 1 CHANNEL, VIDEO AMPLIFIER, PDSO8
THS4601CD 1 CHANNEL, VIDEO AMPLIFIER, PDSO8
THS4601IDDAR 1 CHANNEL, VIDEO AMPLIFIER, PDSO8
THS4601IDDA 1 CHANNEL, VIDEO AMPLIFIER, PDSO8
相关代理商/技术参数
参数描述
THS4601CDDARG3 功能描述:高速运算放大器 Wideband FET-Input Op Amp 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
THS4601CDG4 功能描述:高速运算放大器 Wideband FET-Input Op Amp 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
THS4601EVM 功能描述:放大器 IC 开发工具 THS4601 Eval Mod RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V
THS4601ID 功能描述:高速运算放大器 Wideband FET-Input Op Amp 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
THS4601IDDA 功能描述:高速运算放大器 Wideband FET In 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