MAX4388 Maxim, MAX4388 Datasheet

MAX4388

Manufacturer Part Number

MAX4388

Description

The MAX4285/MAX4286 single and MAX4287/MAX4288/MAX4387/MAX4388 dual ADC buffer amplifiers feature high-speed performance and single +3V supply operation

Manufacturer

Maxim

Datasheet

1.MAX4285.pdf (16 pages)

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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.

Typical Operating Circuit appears at end of data sheet.

Pin Configurations appear at end of data sheet.

19-1500; Rev 0; 4/00

For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769

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

MAX4285

MAX4286

MAX4287

MAX4288

MAX4387

MAX4388

PART

High-Speed ADC Drivers

Communications Equipment

Instrumentation

CCD Imaging Systems

Ultrasound

________________________________________________________________ Maxim Integrated Products

OP AMPS

PER PKG

General Description

MIN GAIN

Applications

-3dB BANDWIDTH

(AT MIN GAIN)

250MHz

150MHz

250MHz

150MHz

with High-Speed Disable

o High Speed at 3V

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

o Input Common-Mode Range Extends to V

o Low Distortion at 5MHz

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

o 6ns Settling Time to 0.1%

o High-Speed Enable/Disable

o Space-Saving SOT23 and µMAX Packages

Ordering Information continued at end of data sheet.

MAX4285EUT-T -40°C to +85°C

MAX4285ESA

MAX4286EUT-T -40°C to +85°C

MAX4286ESA

MAX4287EUA

MAX4287ESA

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

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

350V/µs Slew Rate

-88dBc SFDR

40ns Enable Time

50ns Disable Time

High Output Impedance

PART

HIGH-SPEED

DISABLE

-40°C to +85°C

Yes

RANGE

TEMP.

Ordering Information

10-pin µMAX/14-pin SO

10-pin µMAX, 14-pin SO

6-pin SOT23, 8-pin SO

8-pin µMAX/SO

Selector Guide

PIN-

PACKAGE

6 SOT23-6

8 SO

6 SOT23-6

8 SO

8 µMAX

8 SO

PIN-PACKAGE

Features

SOT TOP

MARK

AABQ

AABR

—

Related parts for MAX4388

MAX4388 Summary of contents

Page 1

... 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. High-Speed ADC Drivers Communications Equipment Instrumentation ...

Page 2

... SOT23 (derate 7.1mW/°C above +70°C)............571mW Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability ...

Page 3

SOT23 ADC Buffer Amplifiers DC ELECTRICAL CHARACTERISTICS (continued +3V DISABLE_ = 3V +25°C.) (Note 1) A PARAMETER SYMBOL Output Current Drive I OUT Power-Supply Rejection Ratio PSRR Disabled ...

Page 4

... SOT23 ADC Buffer Amplifiers with High-Speed Disable AC ELECTRICAL CHARACTERISTICS (V = +3V DISABLE_ = 3V +5V/V for MAX4286 and MAX4387/MAX4388, T PARAMETER SYMBOL Small-Signal -3dB Bandwidth BW Large-Signal -3dB Bandwidth BW Bandwidth for 0.1dB Flatness BW 0.1dB Slew Rate SR Rise Time t R Fall Time t F Settling Time (0.1 ...

Page 5

... SOT23 ADC Buffer Amplifiers AC ELECTRICAL CHARACTERISTICS (continued +5V DISABLE_ = 5V +5V/V for MAX4286 and MAX4387/MAX4388, T PARAMETER SYMBOL Small-Signal -3dB Bandwidth BW Large-Signal -3dB Bandwidth BW Bandwidth for 0.1dB Flatness BW Slew Rate Rise Time Fall Time Settling Time (0.1 0.1% Spurious-Free Dynamic Range ...

Page 6

... MAX4286/MAX4387/MAX4388 GAIN FLATNESS vs. FREQUENCY 0 +5V/V V 0.3 0 100Ω LOAD 0 300Ω LOAD 0 -0 1kΩ -0.2 LOAD -0.3 -0.4 -0.5 -0.6 1G 100k 1M 10M 100M FREQUENCY (Hz) MAX4286/MAX4387/MAX4388 DISTORTION vs. FREQUENCY - 300Ω 0.5Vp-p OUT - +5V/V V -60 -70 -80 2ND HARMONIC -90 3RD HARMONIC -100 100 0 FREQUENCY (MHz 100 ...

Page 7

... 20MHz - +1V/V V 2ND HARMONIC -60 -70 -80 -90 -100 -110 3RD HARMONIC -120 0 0.25 0.50 0.75 VOLTAGE (Vp-p) MAX4287/MAX4288/MAX4387/MAX4388 CROSSTALK vs. FREQUENCY -20 -40 -60 -80 -100 -120 1G 0 FREQUENCY (MHz) MAX4286/MAX4387/MAX4388 LARGE-SIGNAL PULSE RESPONSE (A = +5V/V) V INPUT 100mV/ div OUTPUT 500mV/ div TIME (5ns/div) 1.00 1.25 100 1000 7 ...

Page 8

... +1.0V, T =+25°C, unless otherwise noted MAX4286/MAX4387/MAX4388 SMALL-SIGNAL PULSE RESPONSE (A = +5V/V) V INPUT 10mV/ div OUTPUT 50mV/ div TIME (5ns/div) ISOLATION RESISTANCE vs. LOAD CAPACITANCE MAX4286/MAX4387/MAX4388 +5V MAX4285/87/ +1V 100 130 160 190 220 C (pF) LOAD COMMON-MODE REJECTION vs ...

Page 9

SOT23 ADC Buffer Amplifiers = 0, DISABLE_ ≥ 2V +3V VOLTAGE NOISE DENSITY vs. FREQUENCY 100 100 1k 10k 100k 1M FREQUENCY (Hz) INPUT OFFSET CURRENT vs. TEMPERATURE 0.5 ...

Page 10

SOT23 ADC Buffer Amplifiers with High-Speed Disable = 0, DISABLE_ ≥ 2V +3V MAX4286 SMALL-SIGNAL GAIN vs. FREQUENCY 37pF) LOAD ISO LOAD 2 +5V/V ...

Page 11

... INB INB OUTB MAX4388 have dual disable pins (DISABLEA, DISA- BLEB). The MAX4285/MAX4287/MAX4288 are internally com- pensated for unity-gain stability. The MAX4286/ MAX4387/MAX4388 are compensated for gains of +5V/V or greater. Applications Information Inverting and Noninverting Configurations Select the gain-setting feedback (R ...

Page 12

... Use a constant-impedance board design if possi- ble. High-Speed Disable The MAX4285/MAX4286/MAX4288 and MAX4388 fea- ture a disable (DISABLE_) input that places the amplifi low-power, high-output-impedance state. When DISABLE_ is asserted, the amplifier’s output impedance is typically 35kΩ. This high output impedance, com- ...

Page 13

... MAX4387EUA -40°C to +85°C 8 µMAX MAX4387ESA -40°C to +85° MAX4388EUB -40°C to +85°C 10 µMAX MAX4388ESD -40°C to +85° Chip Information TRANSISTOR COUNT: MAX4285/MAX4286 : 114 MA4287/MAX4288/ MAX4387/MAX4388 : 227 TOP VIEW MAX4285 MAX4286 OUT VEE IN+ IN 6-PIN SOT23 ...

Page 14

SOT23 ADC Buffer Amplifiers with High-Speed Disable 14 ______________________________________________________________________________________ Package Information ...

Page 15

SOT23 ADC Buffer Amplifiers ______________________________________________________________________________________ with High-Speed Disable Package Information (continued) 15 ...

Page 16

... SOT23 ADC Buffer Amplifiers with High-Speed Disable Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. ...

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