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參數資料
| 型號： | OPA3682E |
| 英文描述： | Triple, Wideband, Fixed Gain BUFFER AMPLIFIER With Disable |
| 中文描述： | 三，寬帶，固定增益緩沖放大器具有禁用 |
| 文件頁數： | 14/19頁 |
| 文件大小： | 234K |
| 代理商： | OPA3682E |
14
OPA3682
This triple op amp could also be used to drive triple video
ADCs to digitize component video.
HIGH SPEED INSTRUMENTATION AMPLIFIER
Figure 3 shows an instrumentation amplifier based on the
OPA3682. The offset matching between inputs makes this an
attractive input stage for this application. The differential-to-
single-ended gain for this circuit is 2.0V/V. The inputs are
high impedance, with only 1pF to ground at each input. The
loads on the OPA3682 outputs are equal for the best harmonic
distortion possible.
MULTIPLEXED CONVERTER DRIVER
The converter driver in Figure 4 multiplexes among the
three input signals. The OPA3682s enable and disable times
support multiplexing among video signals. The “make-
before-break” disable characteristic of the OPA3682 ensures
that the output is always under control. To avoid large
switching glitches, switch during the sync or retrace por-
tions of the video signal—the two inputs should be almost
equal at these times. Because the output is always under
control, the switching glitches for two 0V inputs are
< 20mV. With standard video signals levels at the inputs,
the
maximum differential voltage across the disabled inputs will
not exceed the
±
1.2V maximum rating.
FIGURE 3. High-Speed Instrumentation Amplifier.
1/3
OPA3682
1/3
OPA3682
1/3
OPA3682
400
400
400
400
400
200
200
400
V
2
V
OUT
V
1
FIGURE 4. Multiplexed Converter Driver.
1/3
OPA3682
400
400
100
V
1
1/3
OPA3682
400
400
100
V
2
1/3
OPA3682
400
400
100
V
3
Selection
Logic
ADS823
10-Bit
60MSPS
0.1
μ
F
0.1
μ
F
4.99k
0.1
μ
F
4.99k
0.1
μ
F
100pF
REFT
+3.5V
REFB
+1.5V
+In
–In
CM
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相關代理商/技術參數 |
參數描述 |
|---|---|
| OPA3682E/250 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Buffer/Voltage Follower |
| OPA3682E/2K5 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Buffer/Voltage Follower |
| OPA3682U | 功能描述:高速運算放大器 SOIC-16 Triple Wide RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度: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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| OPA3682U/2K5 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Buffer/Voltage Follower |
| OPA3684 | 制造商:BB 制造商全稱:BB 功能描述:Quad, Low-Power, Current-Feedback OPERATIONAL AMPLIFIER |
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