EXAR XRDAN27

XRDAN27
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Introduction
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Circuit Description and Results
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Conclusion
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OUT2(s )
=
OUT1(s )
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(1 • s • RC) (1 + 1.4 • RC • s )
(1 + s • RC) (1 + 0.25 • RC • s )
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XRDAN27
PSPICE CIRCUIT FILE
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2 <
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1 2 H (s ) =
FS =
1 •
1
TS
1 2 e•
STS
/'
STS
71 @ 1
7* '1 @ 1
6
-
R
50
R
10
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A
RC =
0.25
FS
Figure 3. Compensating for Zero Order Hold
Amplitude Attenuation
XRDAN27
8
OUT2
Group Delay
5
OUT1
<
B
OUT1
OUT2
? 7* ;
7* Amplitude
-5;
-:;
,&
B,&
OUT1
OUT2
9&
B9&
9&
Frequency
Figure 4. Comparison of Hold Response before and after Compensation
B
B9&
XRDAN27
8
Group Delay
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<
7
Hold only
? OUT1
OUT2
Lead without Equilization
8;
Amplitude
;
-8
-;
./'0
Lead
9&
9&
OUT1
OUT2
59&
LEAD
:9&
C9&
7* Figure 5. Comparison of Hold Response before and after Compensation
5
9&