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EL4543ILZ-T7

Triple Differential Twisted-Pair Driver with Common-Mode Sync Encoding

Renesas Electronics 

DATASHEET

EL4543

Triple Differential Twisted-Pair Driver with Common-Mode Sync Encoding

FN7325

Rev 11.00

September 13, 2007

The EL4543 is a high bandwidth triple differential amplifier

with integrated encoding of video sync signals. The inputs

are suitable for handling high speed video or other

communications signals in either single-ended or differential

form, and the common-mode input range extends all the way

to the negative rail enabling ground-referenced signalling in

single supply applications. The high bandwidth enables

differential signalling onto standard twisted-pair or coax with

very low harmonic distortion, while internal feedback

ensures balanced gain and phase at the outputs reducing

radiated EMI and harmonics.

Embedded logic encodes standard video horizontal and

vertical sync signals onto the common mode of the twisted

pair(s), transmitting this additional information without the

requirement for additional buffers or transmission lines. The

EL4543 enables significant system cost savings when

compared with discrete line driver alternatives.

The EL4543 is available in both a 24 Ld QSOP package and

a 20 Ld QFN package and is specified for operation over the

-40°C to +85°C temperature range.

TABLE 1. SYNC SIGNAL ENCODING

COMMON COMMON COMMON

MODE A

MODE B

MODE C

H

V

(RED)

(GREEN)

(BLUE)

Low

High

3.0

2.0

2.5

Low

Low

2.5

3.0

2.0

High

Low

2.0

3.0

2.5

High

High

2.5

2.0

3.0

TABLE 2. INPUT LOGIC THRESHOLD (+5V SUPPLY)

VLO, max

VHI, min

0.8V

2V

Features

• Fully differential inputs, outputs, and feedback

• 350MHz -3dB bandwidth

• 1200V/µs slew rate

• -75dB distortion at 5MHz

• Single 5V to 12V operation

• 50mA minimum output current

• Low power - 36mA total typical supply current

• Pb-free available (RoHS compliant)

Applications

• Twisted-pair drivers

• Differential line drivers

• VGA over twisted-pair

• Transmission of analog signals in a noisy environment

Ordering Information

PART

NUMBER

PART

MARKING

PACKAGE

PKG.

DWG. #

EL4543IU

EL4543IU 24 Ld QSOP

MDP0040

EL4543IU-T7**

EL4543IU 24 Ld QSOP

MDP0040

EL4543IU-T13**

EL4543IU 24 Ld QSOP

MDP0040

EL4543IUZ

(See Note)

EL4543IUZ 24 Ld QSOP

(Pb-free)

MDP0040

EL4543IUZ-T7**

(See Note)

EL4543IUZ 24 Ld QSOP

(Pb-free)

MDP0040

EL4543IUZ-T13**

(See Note)

EL4543IUZ 24 Ld QSOP

(Pb-free)

MDP0040

EL4543IL

4543IL

20 Ld 4x4 QFN* L20.4x4B

EL4543IL-T7**

4543IL

20 Ld 4x4 QFN* L20.4x4B

EL4543IL-T13**

4543IL

20 Ld 4x4 QFN* L20.4x4B

EL4543ILZ

(See Note)

4543ILZ

20 Ld 4x4 QFN* L20.4x4B

(Pb-free)

EL4543ILZ-T7**

(See Note)

4543ILZ

20 Ld 4x4 QFN* L20.4x4B

(Pb-free)

EL4543ILZ-T13**

(See Note)

4543ILZ

20 Ld 4x4 QFN* L20.4x4B

(Pb-free)

*20 Ld 4x4 QFN, exposed pad 2.7 x 2.7mm is connected to VS-

**Please refer to TB347 for details on reel specifications.

NOTE: These Intersil Pb-free plastic packaged products employ

special Pb-free material sets; molding compounds/die attach

materials and 100% matte tin plate PLUS ANNEAL - e3 termination

finish, which is RoHS compliant and compatible with both SnPb and

Pb-free soldering operations. Intersil Pb-free products are MSL

classified at Pb-free peak reflow temperatures that meet or exceed

the Pb-free requirements of IPC/JEDEC J STD-020.

FN7325 Rev 11.00

September 13, 2007

Page 1 of 18

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