General Description

The MAX12559 is a dual, 3.3V, 14-bit analog-to-digital

converter (ADC) featuring fully differential wideband

track-and-hold (T/H) inputs, driving internal quantizers.

The MAX12559 is optimized for low power, small size,

and high dynamic performance in intermediate frequen-

cy (IF) and baseband sampling applications. This dual

ADC operates from a single 3.3V supply, consuming

only 980mW while delivering a typical 72.2dB signal-to-

noise ratio (SNR) performance at a 175MHz input fre-

quency. The T/H input stages accept single-ended or

differential inputs up to 350MHz. In addition to low oper-

ating power, the MAX12559 features a 0.5mW power-

down mode to conserve power during idle periods.

A flexible reference structure allows the MAX12559 to

use the internal 2.048V bandgap reference or accept

an externally applied reference and allows the refer-

ence to be shared between the two ADCs. The refer-

ence structure allows the full-scale analog input range

to be adjusted from ±0.35V to ±1.15V. The MAX12559

provides a common-mode reference to simplify design

and reduce external component count in differential

analog input circuits.

The MAX12559 supports either a single-ended or differ-

ential input clock. User-selectable divide-by-two (DIV2)

and divide-by-four (DIV4) modes allow for design flexibil-

ity and help to reduce the negative effects of clock jitter.

Wide variations in the clock duty cycle are compensated

with the ADC’s internal duty-cycle equalizer (DCE).

The MAX12559 features two parallel, 14-bit-wide,

CMOS-compatible outputs. The digital output format is

pin-selectable to be either two’s complement or Gray

code. A separate power-supply input for the digital out-

puts accepts a 1.7V to 3.6V voltage for flexible interfac-

ing with various logic levels. The MAX12559 is available

in a 10mm x 10mm x 0.8mm, 68-pin thin QFN package

with exposed paddle (EP), and is specified for the

extended (-40

°C to +85°C) temperature range.

For a 12-bit, pin-compatible version of this ADC, refer to

the MAX12529 data sheet. See the Selector Guide for

more selections.

Applications

IF and Baseband Communication Receivers

Cellular, LMDS, Point-to-Point Microwave,

MMDS, HFC, WLAN

I/Q Receivers

Medical Imaging

Portable Instrumentation

Digital Set-Top Boxes

Low-Power Data Acquisition

Features

♦ Direct IF Sampling Up to 350MHz

♦ Excellent Dynamic Performance

♦ 3.3V Low-Power Operation

980mW (Differential Clock Mode)

952mW (Single-Ended Clock Mode)

♦ Fully Differential or Single-Ended Analog Input

♦ Adjustable Differential Analog Input Voltage

♦ 750MHz Input Bandwidth

♦ Adjustable, Internal or External, Shared Reference

♦ Differential or Single-Ended Clock

♦ Accepts 25% to 75% Clock Duty Cycle

♦ User-Selectable DIV2 and DIV4 Clock Modes

♦ Power-Down Mode

♦ CMOS Outputs in Two’s Complement or Gray

Code

♦ Out-of-Range and Data-Valid Indicators

♦ Small, 68-Pin Thin QFN Package

(10mm x 10mm x 0.8mm)

♦ 12-Bit, Pin-Compatible Version Available

(MAX12529)

♦ Evaluation Kit Available (Order MAX12559EVKIT)

Dual, 96Msps, 14-Bit, IF/Baseband ADC

________________________________________________________________ Maxim Integrated Products

1

Ordering Information

19-3925; Rev 1; 4/07

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

EVALUATION

KIT

AVAILABLE

PART

TEMP RANGE PIN-PACKAGE

PKG

CODE

MAX12559ETK-D

-40

°C to +85°C 68 Thin QFN-EP* T6800-4

MAX12559ETK+D -40

°C to +85°C 68 Thin QFN-EP* T6800-4

*EP = Exposed paddle.

+Denotes lead-free package.

D = Dry pack.

PART

SAMPLING RATE

(Msps)

RESOLUTION

(Bits)

MAX12559

96

14

MAX12558

80

14

MAX12557

65

14

MAX12529

96

12

MAX12528

80

12

MAX12527

65

12

Selector Guide

Pin Configuration appears at end of data sheet.