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 PackagesApplicationHigh-Speed ADC Drivers
Communications Equipment
Instrumentation
CCD Imaging Systems
UltrasoundPinout
SpecificationsSupply Voltage (VCC - VEE)...................................-0.3V to +7.5V
Input Voltage Range (IN+, IN-)...........(VEE- 0.3V) to (VCC+ 0.3V)
Differential Input Voltage.....................................-0.3V to +7.5V
DISABLE..............................................(VEE- 0.3V) to (VCC+ 0.3V)
Current into IN+, IN-, DISABLE.........................................±20mA
Output Short-Circuit Duration.......................................Indefinite
Continuous Power Dissipation (A= +70°C)
6-Pin SOT23 (derate 7.1mW/°C above +70°C)...............571mW
8-Pin µMAX (derate 4.1mW/°C above +70°C).................330mW
10-Pin µMAX (derate 5.6mW/°C above +70°C)...............444mW
8-Pin SO (derate 5.88mW/°C above +70°C)...................471mW
14-Pin SO (derate 8.3mW/°C above +70°C)...................667mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature.....................................................+150°C
Storage Temperature Range............................-65°C to +150°C
Lead Temperature (soldering, 10s)................................+300°C
DescriptionThe 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 sixdevices 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).
The MAX4285 requires 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 the MAX4285 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.
MAX4285 Data Sheet
