19-1500; Rev 0; 4/00
+3V/+5V, 250MHz, SOT23 ADC Buffer Amplifiers
with High-Speed Disable
General Description
Features
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 ±±.425V to ±3.25V dual supplies. The common-
mode input voltage range extends to the negative power-
supply rail (ground in single-supply applications).
ꢀ High Speed at 3V
250MHz -3dB Bandwidth (MAX4285/87/88)
150MHz -3dB Bandwidth (MAX4286, MAX4387/88)
350V/µs Slew Rate
ꢀ +2.85V to +6.5V Single-Supply Operation
ꢀ Input Common-Mode Range Extends to V
EE
ꢀ Low Distortion at 5MHz
-88dBc SFDR
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.±%) settling time, 88dBc (f = 5MHz) of SFDR, and up to
±00mA 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.
ꢀ High Output Current Drive: -106mA to +77mA
ꢀ 6ns Settling Time to 0.1%
ꢀ High-Speed Enable/Disable
40ns Enable Time
50ns Disable Time
High Output Impedance
ꢀ Space-Saving SOT23 and µMAX Packages
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 ±0-pin µMAX and
±4-pin SO packages.
Applications
Ordering Information
High-Speed ADC Drivers
Communications Equipment
Instrumentation
TEMP.
RANGE
PIN-
PACKAGE
SOT TOP
MARK
PART
MAX4285EUT-T -40°C to +85°C 6 SOT23-6
MAX4285ESA -40°C to +85°C 8 SO
MAX4286EUT-T -40°C to +85°C 6 SOT23-6
AABQ
—
CCD Imaging Systems
Ultrasound
AABR
—
MAX4286ESA
MAX4287EUA
MAX4287ESA
-40°C to +85°C 8 SO
-40°C to +85°C 8 µMAX
-40°C to +85°C 8 SO
—
—
Typical Operating Circuit appears at end of data sheet.
Pin Configurations appear at end of data sheet.
Ordering Information continued at end of data sheet.
Selector Guide
OP AMPS
PER PKG
-3dB BANDWIDTH
(AT MIN GAIN)
HIGH-SPEED
DISABLE
PART
MIN GAIN
PIN-PACKAGE
MAX4285
MAX4286
MAX4287
MAX4288
MAX4387
MAX4388
1
1
2
2
2
2
1
5
1
1
5
5
250MHz
Yes
Yes
No
6-pin SOT23, 8-pin SO
6-pin SOT23, 8-pin SO
8-pin µMAX/SO
150MHz
250MHz
250MHz
Yes
No
10-pin µMAX/14-pin SO
8-pin µMAX/SO
150MHz
150MHz
Yes
10-pin µMAX, 14-pin SO
________________________________________________________________ Maxim Integrated Products
1
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