MAX4447

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

Industry's Fastest Differential Line Drivers


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.
MAX4447, MAX4448, MAX4449: Typical Operating Circuit MAX4447, MAX4448, MAX4449: Typical Operating Circuit Enlarge+

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
Part Number Functions BW
(MHz)
VSUPPLY
(V)
ICC
(mA)
IOUT
(mA)
Slew Rate
(V/µs)
Diff. Phase/ Gain
(deg/%)
AV
(V/V)
BW
(MHz)
Package/Pins Oper. Temp.
(°C)
Budgetary
Price
@ -3dB typ min 0.1dB min See Notes
MAX4447  Driver 430
-5
5
46 90 5700 0.02/0.01 2 200
SOIC(N)/16
-40 to +85 $2.94 @1k
MAX4448  330 4300 2 40
SOIC(N)/16
$2.94 @1k
MAX4449  400 6500 5 140
SOIC(N)/16
$2.88 @1k
See All Video/Wideband Line Drivers/Receivers (6)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


MAX4447EVKIT: Evaluation Kit for the MAX4447, MAX4448, and MAX4449
MAX4448EVKIT: Evaluation Kit for the MAX4447, MAX4448, and MAX4449
MAX4449EVKIT: Evaluation Kit for the MAX4447, MAX4448, and MAX4449

Quality and Environmental Data

Request Reliability Report for: MAX4447 
Lead-Free Package Tin (Sn) Whisker Reports

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