General Description

The MAX1428 is a 5V, high-speed, high-performance

analog-to-digital converter (ADC) featuring a fully differ-

ential wideband track-and-hold (T/H) and a 15-bit con-

verter core. The MAX1428 is optimized for multichannel,

multimode receivers, which require the ADC to meet very

stringent dynamic performance requirements. With a

noise floor of -78.4dBFS, the MAX1428 allows for the

design of receivers with superior sensitivity.

The MAX1428 achieves two-tone, spurious-free dynamic

range (SFDR) of -82dBc for input tones of 69MHz and

71MHz. Its excellent signal-to-noise ratio (SNR) of 73.9dB

and single-tone SFDR performance (SFDR1/SFDR2) of

80Msps make this part ideal for high-performance digital

receivers.

The MAX1428 operates from an analog 5V and a digital

and allows for a sampling speed of up to 80Msps. The

input T/H operates with a -1dB full-power bandwidth of

260MHz.

The MAX1428 features parallel, CMOS-compatible out-

puts in two’s-complement format. To enable the interface

with a wide range of logic devices, this ADC provides a

separate output driver power-supply range of 2.3V to

3.5V. The MAX1428 is manufactured in an 8mm x 8mm,

56-pin thin QFN package with exposed paddle (EP) for

low thermal resistance, and is specified for the extended

industrial (-40°C to +85°C) temperature range.

Note that IF parts MAX1418, MAX1428, and MAX1430

(see Pin-Compatible Higher/Lower Speed Versions

Selection table) are recommended for applications that

require high dynamic performance for input frequen-

part MAX1427, the MAX1428 is optimized for input

Applications

Cellular Base-Station Transceiver Systems (BTS)

Wireless Local Loop (WLL)

Single- and Multicarrier Receivers

Multistandard Receivers

E911 Location Receivers

Power Amplifier Linearity Correction

Antenna Array Processing

Features

♦ 80Msps Minimum Sampling Rate

♦ -78.4dBFS Noise Floor

♦ Excellent Dynamic Performance

83dBc/91dBc Single-Tone SFDR1/SFDR2 at

♦ Less than 0.25ps Sampling Jitter

♦ Fully Differential Analog Input Voltage Range of

♦ CMOS-Compatible Two’s-Complement Data Output

♦ Separate Data Valid Clock and Overrange Outputs

♦ Flexible-Input Clock Buffer

♦ EV Kit Available for MAX1428

(Order MAX1427EVKIT)

15-Bit, 80Msps ADC with -78.4dBFS

Noise Floor for IF Applications

________________________________________________________________ Maxim Integrated Products

1

Ordering Information

19-3433; Rev 0; 10/04

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

EVALUATION

KIT

AVAILABLE

Pin Configuration appears at end of data sheet.

PART

TEMP RANGE

PIN-PACKAGE

MAX1428ETN

-40°C to +85°C

56 Thin QFN-EP*

Pin-Compatible Higher/Lower

Speed Versions Selection

PART

SPEED GRADE

(Msps)

TARGET

APPLICATION

MAX1418

65

IF

MAX1419

65

Baseband

MAX1427

80

Baseband

MAX1428

80

IF

MAX1429

100

Baseband

MAX1430

100

IF

*EP = Exposed paddle.