MAX4285MAX4288/MAX4387/MAX4388 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/ High Speed at 3V MAX4387/MAX4388 dual ADC buffer amplifiers feature 250MHz -3dB Bandwidth (MAX4285/87/88) high-speed performance and single +3V supply opera- 150MHz -3dB Bandwidth (MAX4286, MAX4387/88) tion. The MAX4285/MAX4286/MAX4288 and MAX4388 350V/s Slew Rate offer a disable feature that reduces power-supply current +2.85V to +6.5V Single-Supply Operation and places the outputs in a high-impedance state. All six devices operate from a +2.85V to +6.5V single supply or Input Common-Mode Range Extends to V EE from 1.425V to 3.25V dual supplies. The common- mode input voltage range extends to the negative power- Low Distortion at 5MHz supply rail (ground in single-supply applications). -88dBc SFDR These devices require 20mA of quiescent supply current High Output Current Drive: -106mA to +77mA per amplifier while achieving a 250MHz -3dB bandwidth 6ns Settling Time to 0.1% and a 350V/s slew rate. The combination of an 8ns (to 0.1%) settling time, 88dBc (f = 5MHz) of SFDR, and up to High-Speed Enable/Disable 100mA output drive makes these amplifiers ideal for high- 40ns Enable Time speed ADC drivers for communications and instrumenta- 50ns Disable Time tion applications. In addition, when disabled, their high High Output Impedance output impedance makes them ideal for multiplexing applications. Space-Saving SOT23 and MAX Packages The MAX4285/MAX4286 are available in space-saving 6-pin SOT23 and 8-pin SO packages. The MAX4287/ MAX4387 come in 8-pin MAX and 8-pin SO packages, while the MAX4288/MAX4388 come in 10-pin MAX and 14-pin SO packages. Applications Ordering Information High-Speed ADC Drivers TEMP. PIN- SOT TOP PART RANGE PACKAGE MARK Communications Equipment MAX4285EUT-T -40C to +85C 6 SOT23-6 AABQ Instrumentation MAX4285ESA -40C to +85C 8 SO CCD Imaging Systems MAX4286EUT-T -40C to +85C 6 SOT23-6 AABR Ultrasound MAX4286ESA -40C to +85C 8 SO MAX4287EUA -40C to +85C 8 MAX MAX4287ESA -40C to +85C 8 SO Typical Operating Circuit appears at end of data sheet. Ordering Information continued at end of data sheet. Pin Configurations appear at end of data sheet. Selector Guide OP AMPS -3dB BANDWIDTH HIGH-SPEED PART MIN GAIN PIN-PACKAGE PER PKG (AT MIN GAIN) DISABLE MAX4285 1 1 250MHz Yes 6-pin SOT23, 8-pin SO MAX4286 1 5 150MHz Yes 6-pin SOT23, 8-pin SO MAX4287 2 1 250MHz No 8-pin MAX/SO MAX4288 2 1 250MHz Yes 10-pin MAX/14-pin SO MAX4387 2 5 150MHz No 8-pin MAX/SO MAX4388 2 5 150MHz Yes 10-pin MAX, 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 ABSOLUTE MAXIMUM RATINGS Supply Voltage (V - V ) ...................................-0.3V to +7.5V 8-Pin MAX (derate 4.1mW/C above +70C) .............330mW CC EE Input Voltage Range (IN+, IN-)........(V - 0.3V) to (V + 0.3V) 10-Pin MAX (derate 5.6mW/C above +70C) ...........444mW EE CC Differential Input Voltage.......................................-0.3V to +7.5V 8-Pin SO (derate 5.88mW/C above +70C)................471mW 14-Pin SO (derate 8.3mW/C above +70C)................667mW Voltage at DISABLE .........................(V - 0.3V) to (V + 0.3V) EE CC Operating Temperature Range ...........................-40C to +85C Current into IN+, IN-, DISABLE ........................................20mA Junction Temperature......................................................+150C Output Short-Circuit Duration ........................................Indefinite Storage Temperature Range .............................-65C to +150C Continuous Power Dissipation (T = +70C) A Lead Temperature (soldering, 10s) .................................+300C 6-Pin SOT23 (derate 7.1mW/C above +70C)............571mW Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC ELECTRICAL CHARACTERISTICS (V = +3V, V = 0, DISABLE = 3V, R = , V = 1V, and T = T to T , unless otherwise noted. Typical values are at CC EE L CM A MIN MAX T = +25C.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating Supply Voltage Guaranteed by PSRR test 2.85 6.5 V Range V V Input Common-Mode Voltage EE CC - V Guaranteed by CMRR test V CM Range 1.25 MAX4 87EU /MAX4 88EU /MAX4 8 ES 0.1 8 Input Offset Voltage V mV OS MAX4285EUT-T/MAX4286EUT-T 1.5 12 Input Offset-Voltage TC 26 V/C VOS Temperature Coefficient Input Offset-Voltage Matching V MAX4287/88 and MAX4387/88 0.2 mV OS Input Bias Current I 13 35 A B Input Offset Current I 0.2 8 A OS Differential (-10mV V +10mV) 38 IN Input Resistance R k IN Common mode (V V V - 1.25V) 600 EE CM CC MAX4 87EU / MAX4 88EU / 50 73 MAX4 8 ES V V EE CM Common-Mode Rejection Ratio CMRR dB V - 1.25V CC MAX4285EUT-T/ 45 68 MAX4286EUT-T R = 2k 75 94 L VEE + 0.4V Open-Loop Gain A R = 300 65 94 dB VOL L V V - 0.4V OUT CC R = 100 60 85 L 2 MAX4285MAX4288/MAX4387/MAX4388