NE592
2r
e
11
+6
14
V
1
10
V
0
5
7
NOTE:
V 0(s)
1
592
1.4
@
10 4
[
v 1(s)
Z(S)
)
2re
1.4
@
104
[
Z(S)
)
32
4
Z
-6
Basic Configuration
+5
+6
10
1
10
8
7
2
9
4
8
529
+6
0.2mF
14
V
1
Q
11
10
8
592
2KW
V
0
14
11
7
1
4
5
7
0.2mF
592
1
4
5
5
C
Q
2KW
AMPLITUDE: 1-10 mV p-p
FREQUENCY: 1-4 MHz
-6
3
6
-6
NOTE:
For frequency F
1
<< 1/2
π
(32) C
V
]
1.4 x 10 4C
dVi
dT
READ HEAD
DIFFERENTIATOR/AMPLIFIER
ZERO CROSSING DETECTOR
O
Disc/Tape Phase-Modulated Readback Systems
Differentiation with High
Common-Mode Noise Rejection
Figure 25. Typical Applications
Z NETWORK
FILTER
TYPE
V
0
(s) TRANSFER
V
1
(s) FUNCTION
1.4
10 4
1
s
)
R L
R
L
LOW PASS
L
R
C
HIGH PASS
1.4
R
10 4
s
s
)
1 RC
R
L
C
BAND PASS
1.4
L
10 4
s
s 2
)
R Ls
)
1 LC
L
R
C
1.4
10 4
s 2
)
1 LC
2
)
1 LC
)
s RC
s
BAND REJECT
R
NOTES:
In the networks above, the R value used is assumed to include 2r
e
, or approximately 32W.
S = jW
W
= 2πf
Figure 26. Filter Networks
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