General Description

The MAX1011 is a 6-bit analog-to-digital converter

(ADC) that combines high-speed, low-power operation

with a user-selectable input range, an internal refer-

ence, and a clock oscillator. The ADC converts analog

signals into binary-coded digital outputs at sampling

rates up to 90Msps. The ability to directly interface with

baseband signals makes the MAX1011 ideal for use in

a wide range of communications and instrumentation

applications.

The MAX1011’s input amplifier features a true differential

input, a -0.5dB analog bandwidth of 55MHz, and a user-

programmable input full-scale range of 125mVp-p,

250mVp-p, or 500mVp-p. With an AC-coupled signal,

input offset is typically less than 1/4LSB. Dynamic per-

formance is 5.85 effective number of bits (ENOB) with a

20MHz analog input signal, or 5.7 ENOB with a 50MHz

signal.

The MAX1011 operates with +5V analog and +3.3V digi-

tal supplies for easy interfacing to +3.3V-logic-compatible

digital signal processors and microprocessors. It comes

in a 24-pin QSOP package.

Applications

IF Sampling Receivers

VSAT Receivers

Wide Local Area Networks (WLANs)

Instrumentation

Features

o High Sampling Rate: 90Msps

o Low Power Dissipation: 215mW

o Excellent Dynamic Performance:

5.85 ENOB with 20MHz Analog Input

5.7 ENOB with 50MHz Analog Input

o ±1/4LSB INL and DNL (typ)

o ±1/4LSB Input Offset (typ)

o Internal Bandgap Voltage Reference

o Internal Oscillator with Overdrive Capability

o 55MHz (-0.5dB) Bandwidth Input Amplifier with

True Differential Input

o User-Selectable Full-Scale Range

(125mVp-p, 250mVp-p, or 500mVp-p)

o Single-Ended or Differential Input Drive

o Flexible, 3.3V, CMOS-Compatible Digital Outputs

Low-Power, 90Msps, 6-Bit ADC

________________________________________________________________

Maxim Integrated Products

1

MAX1011

D0–D5

DCLK

TNK+

TNK-

INPUT

AMP

IN+

IN-

GAIN

DATA

BUFFER

6

ADC

VREF

BANDGAP

REFERENCE

OCC+

OCC-

6

OFFSET

CORREC-

TION

CLOCK

OUT

CLOCK

DRIVER

Functional Diagram

19-1335; Rev 0a; 2/98

PART

MAX1011CEG

0°C to +70°C

TEMP. RANGE

PIN-PACKAGE

24 QSOP

EVALUATION

KIT

AVAILABLE

Pin Configuration appears at end of data sheet.

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

For small orders, phone 408-737-7600 ext. 3468.

Ordering Information