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參數(shù)資料
| 型號(hào)： | OPA357 |
| 元件分類： | 視頻放大器 |
| 英文描述： | 3V Video Amplifier with 6dB Gain and Filter in SC70 |
| 中文描述： | 3V的視頻放大器采用SC70的6dB增益和濾波器 |
| 文件頁(yè)數(shù)： | 11/15頁(yè) |
| 文件大?。?/td> | 329K |
| 代理商： | OPA357 |
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SB0S294C DECEMBER 2003 REVISED JULY 2004
www.ti.com
11
SUPPLY VOLTAGE vs COUPLING CAPACITOR
The output voltage swing is a function of the coupling
capacitor value. The value of the sag correction capacitor
has only a minor influence. The smaller the coupling
capacitor, the greater the output swing. Therefore, to
accommodate the large signal swing with very small
coupling capacitors (22
μ
F and 33
μ
F), a higher supply
voltage might be needed.
Figure 12. Output Swing with 47 F on 3V Supply
As seen in Figure 7, the output swing with a 33
μ
F coupling
capacitor is already very close to the saturation limit on a
3V supply. Over time and temperature, a capacitor might
change its value slightly, which in turn could force the
output into saturation. Using the 50Hz, 1/2 black
white screen test signal as a worstcase analysis,
Figure 12 and Figure 13 demonstrate that a 3V supply
could be used with a coupling capacitor as low as 47
μ
F.
1/2
Figure 13. Output Swing with 67 F on 3V Supply
C
OUT
47
F
+
R
OUT
75
GND
75
+
OUT
Enable
2Pole
Filter
(1)
SAG
C
SAG
22
F
AC Gain = 2
DC Gain = 2.8
Television
or VCR
OPA360
Video
DAC
NOTE: (1) Optional 200
for use with TI’s Digital Media Processors.
Level
Shifter
V+
V+ = 2.7V to 3.3V
Figure 14. DC-Coupled Input/AC-Coupled Output
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| OPA357AIDBVR | 功能描述:高速運(yùn)算放大器 250MHz R-to-R I/O Single CMOS 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 |
| OPA357AIDBVRG4 | 功能描述:高速運(yùn)算放大器 250MHz R-to-R I/O Single CMOS 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 |
| OPA357AIDBVT | 功能描述:高速運(yùn)算放大器 250MHz R-to-R I/O Single CMOS 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 |
| OPA357AIDBVTG4 | 功能描述:高速運(yùn)算放大器 250MHz R-to-R I/O Single CMOS 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 |
| OPA357AIDDA | 功能描述:高速運(yùn)算放大器 250MHz R-to-R I/O Single CMOS 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 |
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