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General Description

The MAX4285/MAX4286 single and MAX4287/MAX4288/

MAX4387/MAX4388 dual ADC buffer amplifiers feature

high-speed performance and single +3V supply opera-

tion. The MAX4285/MAX4286/MAX4288 and MAX4388

offer a disable feature that reduces power-supply current

and places the outputs in a high-impedance state. All six

devices operate from a +2.85V to +6.5V single supply or

from ±1.425V to ±3.25V dual supplies. The common-

mode input voltage range extends to the negative power-

supply rail (ground in single-supply applications).

These devices require 20mA of quiescent supply current

per amplifier while achieving a 250MHz -3dB bandwidth

and a 350V/µs slew rate. The combination of an 8ns (to

0.1%) settling time, 88dBc (f = 5MHz) of SFDR, and up to

100mA output drive makes these amplifiers ideal for high-

speed ADC drivers for communications and instrumenta-

tion applications. In addition, when disabled, their high

output impedance makes them ideal for multiplexing

applications.

The MAX4285/MAX4286 are available in space-saving

6-pin SOT23 and 8-pin SO packages. The MAX4287/

MAX4387 come in 8-pin µMAX and 8-pin SO packages,

while the MAX4288/MAX4388 come in 10-pin µMAX and

14-pin SO packages.

Applications

High-Speed ADC Drivers

Communications Equipment

Instrumentation

CCD Imaging Systems

Ultrasound

Features

o High Speed at 3V

250MHz -3dB Bandwidth (MAX4285/87/88)

150MHz -3dB Bandwidth (MAX4286, MAX4387/88)

350V/µs Slew Rate

o +2.85V to +6.5V Single-Supply Operation

o Low Distortion at 5MHz

-88dBc SFDR

o High Output Current Drive: -106mA to +77mA

o 6ns Settling Time to 0.1%

o High-Speed Enable/Disable

40ns Enable Time

50ns Disable Time

High Output Impedance

o Space-Saving SOT23 and µMAX Packages

+3V/+5V, 250MHz, SOT23 ADC Buffer Amplifiers

with High-Speed Disable

________________________________________________________________ Maxim Integrated Products

1

19-1500; Rev 0; 4/00

Ordering Information continued at end of data sheet.

Typical Operating Circuit appears at end of data sheet.

Ordering Information

Selector Guide

MAX4285EUT-T -40°C to +85°C

6 SOT23-6

AABQ

SOT TOP

MARK

PIN-

PACKAGE

TEMP.

RANGE

PART

MAX4285ESA

-40°C to +85°C

8 SO

—

MAX4286EUT-T -40°C to +85°C

6 SOT23-6

AABR

MAX4286ESA

-40°C to +85°C

8 SO

—

MAX4287EUA

-40°C to +85°C

8 µMAX

—

MAX4287ESA

-40°C to +85°C

8 SO

—

PART

OP AMPS

PER PKG

MIN GAIN

-3dB BANDWIDTH

(AT MIN GAIN)

HIGH-SPEED

DISABLE

PIN-PACKAGE

MAX4285

1

1

250MHz

Yes

6-pin SOT23, 8-pin SO

MAX4286

1

5

150MHz

Yes

6-pin SOT23, 8-pin SO

MAX4287

2

1

250MHz

No

8-pin

µMAX/SO

MAX4288

2

1

250MHz

Yes

10-pin

µMAX/14-pin SO

MAX4387

2

5

150MHz

No

8-pin

µMAX/SO

MAX4388

2

5

150MHz

Yes

10-pin

µMAX, 14-pin SO

Pin Configurations appear at end of data sheet.