MAX4448ESE中文資料美信數(shù)據(jù)手冊PDF規(guī)格書

General 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 50? 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.

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/√Hz at fIN = 1MHz

? 8ns Settling Time to 0.1

Applications

? Differential Line Driver

? Single-Ended-to-Differential Conversion

? High-Speed Differential Transmitter

? Coaxial to Twisted-Pair Converter

? Differential Pulse Amplifier

? Differential ADC Driver

? xDSL Applications

? Video and RF Signal Processing and Transmission

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