EL4543

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

OVERVIEW

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.

KEY 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)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
EL4543
Basic Information
生产状态
Mass Production
器件/通道数量
3
带宽 (MHz)
350
压摆率 (V/μs)
1200
VS (最小值)
5 V
VS (最大值)
12 V
IS (每放大器)
14.5 mA
噪声VN (nV/√Hz)
27
IBIAS
15 µA
最大失调电压
10 mV
IOUT
60 mA
轨到轨输入
No
轨到轨输出
No
PSRR (dB)
80
CMRR (dB)
80
热关断
No
增益最小值
2
差分增益 (%)
0.01
差分相位 (°)
0.01
启用
Yes
资质级别
Standard
CAN 采样
YES
温度范围
-40 to +85

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