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| 型號(hào)： | THS4601IDDAG3 |
| 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, SOP-8 |
| 文件頁(yè)數(shù)： | 6/34頁(yè) |
| 文件大小： | 826K |
| 代理商： | THS4601IDDAG3 |
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THS4601
SLOS388B OCTOBER 2001 REVISED JUNE 2002
14
www.ti.com
APPLICATION INFORMATION
designing the transimpedance circuit (continued)
The feedback capacitor provides a pole in the noise gain of the circuit, counteracting the zero in the noise gain
caused by the source capacitance. The pole is set such that the noise gain achieves a 20 dB per decade
rate-of-closure with the open-loop gain response of the amplifier, resulting in a stable circuit. As indicated, the
formula given provides the feedback capacitance for maximally flat bandwidth. Reduction in the value of the
feedback capacitor can increase the signal bandwidth, but this occurs at the expense of peaking in the AC
response.
20 dB/Decade
Rate-of-Closure
GBP
20 dB/
Decade
20 dB/
Decade
AOL
Noise Gain
0
Gain
Zero
Pole
f
Figure 28. Transimpedance Circuit Bode Plot
The performance of the THS4601 has been measured for a variety of transimpedance gains with a variety of
source capacitances. The achievable bandwidths of the various circuit configurations are summarized
numerically in the table. The frequency responses are presented in the Figures 27, 28, and 29.
Note that the feedback capacitances do not correspond exactly with the values predicted by the equation. They
have been tuned to account for the parasitic capacitance of the feedback resistor (typically 0.2 pF for 0805
surface mount devices) as well as the additional capacitance associated with the PC board. The equation
should be used as a starting point for the design, with final values for CF optimized in the laboratory.
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| THS4601IDDAR | 功能描述:高速運(yùn)算放大器 Wideband FET-Input Op Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS4601IDDARG3 | 功能描述:高速運(yùn)算放大器 Wideband FET-Input Op Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS4601IDG4 | 功能描述:高速運(yùn)算放大器 Wideband FET-Input Op Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS4601MUV | 制造商:Texas Instruments 功能描述:EVALUATION PART 10PIN CERAMIC FLATPACK - Rail/Tube |
| THS4631 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:HIGH-VOLTAGE, HIGH SLEW RATE, WIDEBAND FET-INPUT OPERATIONAL AMPLIFIER |
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