EL5177 INTERSIL [Intersil Corporation], EL5177 Datasheet - Page 10

• Manufacturer Part Number: EL5177
• Description: 550MHz Differential Twisted-Pair Driver
• Manufacturer: INTERSIL [Intersil Corporation]

be used. In this case, the V
supply rail.
For good AC performance, parasitic capacitance should be
kept to minimum. Use of wire wound resistors should be
avoided because of their additional series inductance. Use
of sockets should also be avoided if possible. Sockets add
Typical Applications
As the signal is transmitted through a cable, the high
frequency signal will be attenuated. One way to compensate
this loss is to boost the high frequency gain at the receiver
side.
DC Gain
(
R
75
HF
T
)Gain
R
R
GC
C
T
L
=
=
1
1
R
+
R
+
G
G
2R
---------- -
R
--------------------------
R
G
G
F
2R
||
R
F
S
GC
- pin becomes the negative
10
FBP
IN+
IN-
REF
FBN
FBP
I
I
REF
FBN
N
N
+
-
R
R
EL5177
R
R
F
F
F
F
FIGURE 24. TWISTED PAIR CABLE RECEIVER
FIGURE 25. TRANSMIT EQUALIZER
V
V
50
50
O
O
+
-
EL5177
TWISTED PAIR
Z
O
= 100Ω
parasitic inductance and capacitance that can result in
compromised performance. Minimizing parasitic capacitance
at the amplifier's inverting input pin is very important. The
feedback resistor should be placed very close to the
inverting input pin. Strip line design techniques are
recommended for the signal traces.
GAIN
R
(dB)
GR
f
f
L
H
≅
≅
------------------------ -
2πR
---------------------------- -
2πR
1
G
IN+
IN-
REF
GC
1
f
C
L
C
C
C
EL5175
R
FR
f
H
V
O
FREQUENCY
May 10, 2007
FN7344.4