el5175 Intersil Corporation, el5175 Datasheet - Page 13

• Manufacturer Part Number: el5175
• Description: 550mhz Differential Line Receivers
• Manufacturer: Intersil Corporation

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.
Level Shifter and Signal Summer
The EL5175 and EL5375 contains two pairs of differential
pair input stages. It makes the inputs are all high impedance
inputs. To take advantage of the two high impedance inputs,
the EL5175 and EL5375 can be used as a signal summer to
add two signals together. Like, one signal can be applied to
V
ground. The output is equal to:
V
Also, the EL5175 and EL5375 can be used as a level shifter
by applying a level control signal to the REF input.
O
IN
+, the second signal can be applied to REF and V
=
(
V
Z
O
IN
= 100Ω
+
+
V
REF
)
R
×
3
Gain
50Ω
50Ω
C
1
EL5173/
EL5373
13
R
1
V
V
V
V
FB
IN
INB
REF
EL5175/
EL5375
FIGURE 25. TWISTED PAIR CABLE RECEIVER
FIGURE 26. COMPENSATED LINE RECEIVER
R
50
50
2
IN
EL5175, EL5375
Z
- is
O
= 100Ω
V
OUT
50Ω
50Ω
Gain
(dB)
1 + R
V
V
V
V
FB
IN
INB
REF
2
/ (R
f
A
EL5175/
EL5375
1
0Ω
+ R
3
)
f
C
1 + R
2
V
/ R
OUT
1
f
FN7306.6