MAX4285 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – +3V/+5V, 250MHz, SOT23 ADC Buffer Amplifiers with High-Speed Disable

19-1500; Rev 0; 4/00
+3V/+5V, 250MHz, SOT23 ADC Buffer Amplifiers
with High-Speed Disable
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
Typical Operating Circuit appears at end of data sheet.
Pin Configurations appear at end of data sheet.
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 Input Common-Mode Range Extends to V_EE
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
Ordering Information
PART
TEMP.
RANGE
PIN-
PACKAGE
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
MAX4286ESA -40°C to +85°C 8 SO
MAX4287EUA -40°C to +85°C 8 µMAX
MAX4287ESA -40°C to +85°C 8 SO
SOT TOP
MARK
AABQ
—
AABR
—
—
—
Ordering Information continued at end of data sheet.
PART
MAX4285
MAX4286
MAX4287
MAX4288
MAX4387
MAX4388
OP AMPS
PER PKG
1
1
2
2
2
2
MIN GAIN
1
5
1
1
5
5
-3dB BANDWIDTH
(AT MIN GAIN)
250MHz
150MHz
250MHz
250MHz
150MHz
150MHz
HIGH-SPEED
DISABLE
Yes
Yes
No
Yes
No
Yes
Selector Guide
PIN-PACKAGE
6-pin SOT23, 8-pin SO
6-pin SOT23, 8-pin SO
8-pin µMAX/SO
10-pin µMAX/14-pin SO
8-pin µMAX/SO
10-pin µMAX, 14-pin SO
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