EL5172(2010) View Datasheet(PDF) - Intersil

Part Name

Description

Manufacturer

EL5172
(Rev.:2010)

250MHz Differential Line Receivers

Intersil 

Typical Applications

EL5173,

EL5373

OR

EL5172,

EL5372

EL5172, EL5372

50

50Ω

50

ZO = 100Ω

50Ω

0Ω

VFB

VIN

EL5172,

EL5372

VINB

VREF

FIGURE 25. TWISTED PAIR CABLE RECEIVER

VOUT

R3

R1

R2

C1

50Ω

ZO = 100Ω

50Ω

VFB

VIN

EL5172,

EL5372

VINB

VREF

GAIN

(dB)

VOUT

1 + R2/(R1 + R3)

fA

FIGURE 26. COMPENSATED LINE RECEIVER

As the signal is transmitted through a cable, the high

frequency signal will be attenuated. One way to compensate

for this loss is to boost the high frequency gain at the

receiver side.

Level Shifter and Signal Summer

The EL5172 and EL5372 contains two pairs of differential

pair input stages, which make sure that the inputs are all

high impedance inputs. To take advantage of the two high

impedance inputs, the EL5172 and EL5372 can be used as

a signal summer to add two signals together. One signal can

be applied to VIN+, the second signal can be applied to REF

and VIN- is ground. The output is equal to Equation 6:

VO = (VIN + + VREF ) × Gain

(EQ. 6)

Also, the EL5172 and EL5372 can be used as a level shifter

by applying a level control signal to the REF input.

1 + R2/R1

fC

f

12

FN7311.9

September 14, 2010

Share Link: