MAX4144, MAX4145, MAX4146,高速、低失真、差分线接收器

  • 文章关键词:
  • 概述

         The MAX4144/MAX4145/MAX4146 differential line receivers offer unparalleled high-speed, low-distortion performance. Using a three op-amp instrumentation amplifier architecture, these ICs have fully symmetrical differential inputs and a single-ended output. They operate from ±5V power supplies and are capable of driving a 150Ω load to ±3.7V. The MAX4144 has an internally set closed-loop gain of +2V/V. The MAX4145 is optimized for gains from +1V/V to +10V/V, while the MAX4146 is optimized for gains from +10V/V to +100V/V. The MAX4145/MAX4146 require a single external resistor to set the closed-loop gain.

    MAX4144、MAX4145、MAX4146:典型工作电路

    典型工作电路

    These amplifiers use laser-trimmed, matched thin-film resistors to deliver a common-mode rejection (CMR) of up to 90dB at 10MHz. Using current-feedback techniques, the MAX4144 achieves a 130MHz bandwidth and a 1000V/µs slew rate. The MAX4145 achieves a bandwidth of 180MHz and a slew rate of 600V/µs while operating with a closed-loop gain of +1V/V, and the MAX4146 features a bandwidth of 70MHz and a slew rate of 800V/µs with a gain of +10V/V. Excellent differential gain/phase and noise specifications make these amplifiers ideal for a wide variety of video and RF signal-processing applications.

    For a complete differential transmission link, use the MAX4144/MAX4145/MAX4146 with the MAX4147 differential line driver (see the MAX4147 data sheet for more information).

    关键特性

    MAX4144:

    +2V/V Internally Fixed Gain
    130MHz Bandwidth
    1000V/µs Slew Rate
    70dB CMR at 10MHz
    -90dBc SFDR (f = 10kHz)
    Low Differential Gain/Phase: 0.03%/0.03°
    800µA Shutdown
    MAX4145:

    External Gain Selection from +1V/V to +10V/V
    180MHz Bandwidth
    90MHz 0.1dB Gain Flatness
    600V/µs Slew Rate
    75dB CMR at 10MHz
    -92dBc SFDR (f = 10kHz)
    Very Low Noise: 3.8nV per root-Hz (G = +10V/V)
    800µA Shutdown
    MAX4146:

    External Gain Selection from +10V/V to +100V/V
    70MHz Bandwidth (AV = +10V/V)
    800V/µs Slew Rate
    90dB CMR at 10MHz
    -82dBc SFDR (f = 10kHz)
    Very Low Noise: 3.45nV per root-Hz (G = +100V/V)
    800µA Shutdown
    应用/使用

    数据采集
    差分至单端转换
    高速差分线接收器
    高速仪表放大器
    医疗仪表
    双绞线至同轴电缆转换器

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