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參數(shù)資料
| 型號： | CLC409 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Very Wideband, Low Distortion Monolithic Op Amp |
| 中文描述： | 非常寬帶，低失真單片運算放大器 |
| 文件頁數(shù)： | 7/10頁 |
| 文件大?。?/td> | 329K |
| 代理商： | CLC409 |
Application Division
Feedback Resistor
The CLC409 achieves its excellent pulse and distortion per-
formance by using the current feedback topology pioneered
by Comlinear Corporation. The loop gain for a current feed-
back op amp, and hence the frequency response, is pre-
dominantly set by the feedback resistor value. The CLC409
is optimized for use with a 250
feedback resistor. Using
lower values can lead to excessive ringing in the pulse
response while a higher value will limit the bandwidth. Appli-
cation Note OA-13 discusses this in detail along with the
occasions where a different R
f
might be advantageous.
Harmonic Distortion
The CLC409 has been optimized for exceptionally low har-
monic distortion while driving very demanding resistive or
capacitive loads. Generally, when used as the input amplifier
to very high speed flash ADCs, the distortions introduced by
the converter will dominate over the low CLC409 distortions
shown on the plots on the previous page. The 0.01μF ca-
pacitor (C
) shown across the supplies in
Figure 1
and
Figure 2
is critical to achieving the lowest 2nd harmonic
distortion.
The 2-tone, 3rd order spurious plot shows a relatively con-
stant difference between the test power level and the spuri-
ous level with that difference depending on frequency. The
01274812
FIGURE 1. Recommended Non-Inverting Gain Circuit
01274813
FIGURE 2. Recommended Inverting Gain Circuit
C
www.national.com
7
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相關代理商/技術參數(shù) |
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| CLC409 WAF | 制造商:Texas Instruments 功能描述: |
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| CLC409AJM5 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Very Wideband, Low Distortion Monolithic Op Amp |
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