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參數(shù)資料
| 型號： | 5962-9305501MCA |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 CHANNEL, VIDEO AMPLIFIER, CDIP14 |
| 封裝： | CERDIP-14 |
| 文件頁數(shù)： | 15/15頁 |
| 文件大小： | 342K |
| 代理商： | 5962-9305501MCA |
Application Division (Continued)
Unused Amplifiers
It is recommended that any unused amplifiers in the quad
package be connected as unity gain followers (R
f=500)
with the non-inverting input tied to ground through a 50
resistor.
Slew Rate and Harmonic Distortion
Please see the application information for the CLC406.
Differential Gain and Phase
Differential gain and phase performance specifications are
common to composite video distribution applications. These
specifications refer to the change in small signal gain and
phase of the color subcarrier frequency (4.43MHz for PAL
composite video) as the amplifier output is swept over a
range of DC voltages. Application Note OA-08 provides an
additional discussion of differential gain and phase measure-
ments.
Printed Circuit Layout
As with any high speed component, a careful attention to the
board layout is necessary for optimum performance. Of par-
ticular importance is the careful control of parasitic capaci-
tances on the output pin. As the output impedance plot
shows, the closed loop output for the CLC415 eventually
becomes inductive as the loop gain rolls off with increasing
frequency. Direct capacitive loading on the output pin can
quickly lead to peaking in the frequency response, overshoot
in the pulse response, ringing or even sustained oscillations.
The “Settling Time vs. Capacitive Load” plot should be used
as a starting point for the selection of a series output resistor
when a capacitive load must be driven. A quad amplifier will
require careful attention to signal routing in order to minimize
the effects of crosstalk. Signal coupling through the power
supplies can be reduced with bypass capacitors placed
close to the device supply pins.
Evaluation Board
Evaluation PC boards (part number CLC730024 for
through-hole and 730031 for SOIC) for the CLC415 are
available.
CLC415
www.national.com
9
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