参数资料
型号: 5962-9169301MCA
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 音频/视频放大
英文描述: 4 CHANNEL, VIDEO AMPLIFIER, CDIP14
封装: CERDIP-14
文件页数: 13/14页
文件大小: 353K
代理商: 5962-9169301MCA
Application Division (Continued)
magnitude of this undesirable effect. This effect is measured
by driving one or more channels and observing the output of
the other undriven channel(s). The CLC414 plot page offers
two different graphs detailing the effect of crosstalk over
frequency. One plot entitled “All-Hostile Crosstalk Isolation”
graphs
all-hostile
input-referred
crosstalk.
All-hostile
crosstalk refers to the condition where three channels are
driven simultaneously while observing the output of the un-
driven fourth channel. Input-referred implies that crosstalk is
directly affected by gain and therefore a higher gain in-
creases the crosstalk effect by a factor equal to that gain
setting.
The
plot
entitled
“Most
Susceptible
Channel-to-Channel Pulse Coupling” describes the effect of
crosstalk when one channel is driven with a 2V
PP pulse while
the output of the most effected channel is observed.
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 CLC414 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 730024 for through-hole
and 730031 for SOIC) for the CLC414 are available.
CLC414
www.national.com
8
相关PDF资料
PDF描述
5962-9169401MCA 1 CHANNEL, VIDEO AMPLIFIER, CDIP14
5962-9203101M2A 1.5 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, CQCC20
5962-9203101MEA 1.5 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, CDIP16
5962-9203103Q2A 1.5 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, CQCC20
5962-9203103QEA 1.5 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, CDIP16
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