MAX4285

+3V/+5V, 250MHz, SOT23 ADC Buffer Amplifiers with High-Speed Disable

Achieves -88dBc SFDR at 5MHz


Please check latest availability status for a specific part variant.

Description

The MAX4285/MAX4286 single and MAX4287/MAX4288/MAX4387/MAX4388 dual ADC buffer amplifiers feature high-speed performance and single +3V supply operation. 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 instrumentation 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.
MAX4285, MAX4286, MAX4287, MAX4288, MAX4387, MAX4388: Typical Operating Circuit MAX4285, MAX4286, MAX4287, MAX4288, MAX4387, MAX4388: Typical Operating Circuit Enlarge+

Key Features

  • 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 VEE
  • Low Distortion at 5MHz
    • -88dBc SFDR
  • 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

Applications/Uses

  • CCD Imaging
  • Communication Systems
  • High-Speed ADC Drivers
  • Instrumentation
  • Ultrasound

See parametric specs for Video/Wideband Amplifiers (63)


Part NumberAmps.Single SupplyBW
(MHz)
ISUPPLY
(mA)
IOUT
(mA)
Slew Rate
(V/µs)
en
(nV/√Hz)
AVVSUPPLY
(V)
VSUPPLY
(V)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
@ -3dBtypmin<minminmaxSee Notes
MAX4285 1Yes25020773501012.856.5-40 to +85
SOIC (N)/8
SOT23/6
$1.95 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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