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MAX4285 Dataheets PDF



Part Number MAX4285
Manufacturers Maxim
Logo Maxim
Description +3V/+5V / 250MHz / SOT23 ADC Buffer Amplifiers with High-Speed Disable
Datasheet MAX4285 DatasheetMAX4285 Datasheet (PDF)

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 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.

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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 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 commonmode input voltage range extends to the negative powersupply 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 highspeed 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. 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 VEE 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 MAX4285–MAX4288/MAX4387/MAX4388 Applications High-Speed ADC Drivers Communications Equipment Instrumentation CCD Imaging Systems Ultrasound PART Ordering Information TEMP. RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C PINPACKAGE 6 SOT23-6 8 SO 6 SOT23-6 8 SO 8 µMAX 8 SO SOT TOP MARK AABQ — AABR — — — MAX4285EUT-T -40°C to +85°C MAX4285ESA MAX4286ESA MAX4287EUA MAX4287ESA MAX4286EUT-T -40°C to +85°C 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 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 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 ________________________________________________________________ Maxim Integrated Products 1 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 with High-Speed Disable MAX4285–MAX.


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