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6500V/µs, Wideband, High-Output-Current, Single-Ended-to-Differential Line Drivers with Enable

Industry's Fastest Differential Line Drivers

Product Details

Key Features

Parametric specs for Video/Wideband Line Drivers/Receivers
Functions Driver
BW (MHz) (@ -3dB) 400
VSUPPLY (V) -5
5
ICC (mA) (typ) 46
IOUT (mA) (min) 90
Slew Rate (V/µs) 6500
Diff. Phase/ Gain (deg/%) 0.02/0.01
AV (V/V) 5
BW (MHz) (0.1dB min) 140
Package/Pins SOIC (N)/16
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
3.2
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Simplified Block Diagram

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Parameters

Parametric specs for Video/Wideband Line Drivers/Receivers
Functions Driver
BW (MHz) (@ -3dB) 400
VSUPPLY (V) -5
5
ICC (mA) (typ) 46
IOUT (mA) (min) 90
Slew Rate (V/µs) 6500
Diff. Phase/ Gain (deg/%) 0.02/0.01
AV (V/V) 5
BW (MHz) (0.1dB min) 140
Package/Pins SOIC (N)/16
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
3.2

Key Features

  • 6500V/µs Slew Rate (MAX4449)
  • Small-Signal Bandwidth
    • 430MHz (MAX4447)
    • 330MHz (MAX4448)
    • 400MHz (MAX4449)
  • 200MHz 0.1dB Gain Flatness (MAX4447)
  • 130mA Output Drive Current
  • +2V/V Internally Fixed Gain (MAX4447)
  • External Gain Selection
    • >+2V/V (MAX4448)
    • >+5V/V (MAX4449)
  • -78dB SFDR at 100kHz
  • Low Differential Gain/Phase: 0.01%/0.02°
  • Ultra-Low Noise: 23nV per root-Hz at fIN = 1MHz
  • 8ns Settling Time to 0.1%

Applications/Uses

  • Coaxial to Twisted-Pair Converter
  • Differential ADC Driver
  • Differential Line Driver
  • Differential Pulse Amplifier
  • High-Speed Differential Transmitter
  • Single-Ended-to-Differential Conversion
  • Video and RF Signal Processing and Transmission
  • xDSL Applications

Description

The MAX4447/MAX4448/MAX4449 single-ended-to-differential line drivers are designed for high-speed communications. Using current feedback for greater bandwidth, these devices deliver full-power bandwidths up to 405MHz and feature slew rates as high as 6500V/µs. The MAX4447 has a fixed gain of +2V/V and a small-signal bandwidth of 430MHz. The MAX4448/MAX4449 have small-signal bandwidths of 330MHz and 400MHz, respectively, and are internally compensated for minimum gain configurations of +2V/V and +5V/V, respectively. For greater design flexibility, the MAX4448/MAX4449 allow for variable gain selection using external gain-setting resistors. A low-power enable mode reduces current consumption below 5.5mA and places the outputs in a high-impedance state.

The MAX4447/MAX4448/MAX4449 can deliver differential output swings of ±6.2V from ±5V supplies with a 50Ω load. Excellent differential gain/phase and noise specifications make these amplifiers ideal for a wide variety of video and RF signal-processing and transmission applications.

Simplified Block Diagram

MAX4447, MAX4448, MAX4449: Typical Operating Circuit MAX4447, MAX4448, MAX4449: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .