MAXIM MAX1002 Low-Power, 60Msps, Dual, 6-Bit ADC Data Sheet User Manual

19-1270; Rev 0; 7/97

EVALUATION KIT AVAILABLE

Low-Power, 60Msps, Dual, 6-Bit ADC

_______________General Description ____________________________Features The MAX1002 is a dual, 6-bit analog-to-digital converter ±1/4LSB INL and DNL, Typical (ADC) that combines high-speed, low-power operation

1/4LSB (typ) Channel-to-Channel Offset Matching

with a user-selectable input range, an internal refer- ence, and a clock oscillator. The dual, parallel ADCs 0.1d B Gain and 0.5° Phase Matching, Typical are designed to convert in-phase (I) and quadrature

Internal Bandgap Voltage Reference

(Q) analog signals into two 6-bit offset-binary-coded

digital outputs at sampling rates up to 60Msps while Two Matched 6-Bit, 60Msps ADCs

achieving typical integral nonlinearity (INL) and differ-

Excellent Dynamic Performance:

ential nonlinearity (DNL) of ±1/4LSB. The ability to

5.85 ENOB with 20MHz Analog Input

interface directly with baseband I and Q signals makes

5.7 ENOB with 50MHz Analog Input

the MAX1002 ideal for use in direct-broadcast satellite,

VSAT, and QAM16 demodulation applications. Internal Oscillator with Overdrive Capability The MAX1002 input amplifiers feature true differential 55MHz (-0.5d B) Bandwidth Input Amplifiers

inputs, a 55MHz -0.5d B analog bandwidth, and user- with True Differential Inputs programmable input full-scale ranges of 125m Vp-p,

User-Selectable Input Full-Scale Range

250m Vp-p, or 500m Vp-p. With an AC-coupled input

(125m Vp-p, 250m Vp-p, or 500m Vp-p)

signal, matching performance between input channels

is typically 0.1d B gain, 1/4LSB offset, and 0.5° phase. Single-Ended or Differential Input Drive

Dynamic performance is 5.85 effective number of bits

+5V Single Supply

(ENOB) with a 20MHz analog input signal, or 5.78

TTL Outputs

ENOB with a 50MHz input signal.

The MAX1002 operates with a single +5V power supply 90Msps Upgrade with +3.3V CMOS-Compatible

and provides TTL-compatible digital outputs. The device Output Available (MAX1003) is available in the commercial temperature range (0°C to +70°C) and comes in a 36-pin SSOP package.

________________________Applications ______________Ordering Information Direct Broadcast Satellite (DBS) Receivers PART TEMP. RANGE PIN-PACKAGE

VSAT Receivers MAX1002CAX 0°C to +70°C 36 SSOP

Wide Local Area Networks (WLAN)

Pin Configuration appears at end of data sheet.

Cable Television Set-Top Boxes

_________________________________________________________Functional Diagram

IOCC+ IOCC-

INPUT 6ADC DATA D0I–D5I AMP BUFFER

IIN- VREF

OFFSET

CLOCK DCLK

CORREC-

TION I OUT

GAIN TNK+

BANDGAP CLOCK REFERENCE DRIVER

OFFSET CORREC-

MAX1002

QIN+ TION Q

INPUT DATA DQ0–DQ5

AMP BUFFER

QOCC+ QOCC-

Maxim Integrated Products

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.