MAX1448 Maxim Integrated Products, MAX1448 Datasheet

MAX1448

Manufacturer Part Number

MAX1448

Description

Low-Power ADC

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX1448.pdf (21 pages)

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MAX1448EHJ+

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The MAX1448 3V, 10-bit analog-to-digital converter

(ADC) features a fully differential input, a pipelined 10-

stage ADC architecture with wideband track-and-hold

(T/H), and digital error correction incorporating a fully

differential signal path. The ADC is optimized for low-

power, high dynamic performance in imaging and digi-

tal communications applications. The converter

operates from a single 2.7V to 3.6V supply, consuming

only 120mW while delivering a 59dB (typ) signal-to-

noise ratio (SNR) at a 20MHz input frequency. The fully

differential input stage has a -3dB 400MHz bandwidth

and may be operated with single-ended inputs. In addi-

tion to low operating power, the MAX1448 features a

5µA power-down mode for idle periods.

An internal 2.048V precision bandgap reference is

used to set the ADC full-scale range. A flexible refer-

ence structure allows the user to supply a buffered,

direct, or externally derived reference for applications

requiring increased accuracy or a different input volt-

age range.

Lower speed, pin-compatible versions of the MAX1448

are also available. Refer to the MAX1444 data sheet for

a 40Msps version and to the MAX1446 data sheet for a

60Msps version.

The MAX1448 has parallel, offset binary, CMOS-com-

patible three-state outputs that can be operated from

1.7V to 3.6V to allow flexible interfacing. The device is

available in a 5mm x 5mm 32-pin TQFP package and is

specified over the extended industrial (-40°C to +85°C)

temperature range.

19-5400; Rev 2; 5/04

Pin Configuration appears at end of data sheet.

________________________Applications

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.

Ultrasound Imaging

CCD Imaging

Baseband and IF Digitization

Digital Set-Top Boxes

Video Digitizing Applications

________________________________________________________________ Maxim Integrated Products

10-Bit, 80Msps, Single 3.0V, Low-Power

General Description

ADC with Internal Reference

o Single 3.0V Operation

o Excellent Dynamic Performance

o Low Power

o Fully Differential Analog Input

o Wide 2V

o 400MHz -3dB Input Bandwidth

o On-Chip 2.048V Precision Bandgap Reference

o CMOS-Compatible Three-State Outputs

o 32-Pin TQFP Package

o Evaluation Kit Available (MAX1448 EV Kit)

CLK

MAX1448EHJ

IN+

IN-

PART

59dB SNR at f

74dBc SFDR at f

40mA (Normal Operation)

5µA (Shutdown Mode)

REFOUT

T/H

REF

P-P

REFIN

Differential Input Voltage Range

REFP COM REFN

REF SYSTEM +

PIPELINE ADC

CONTROL

-40°C to +85°C

TEMP RANGE

BIAS

Ordering Information

= 20MHz

Functional Diagram

= 20MHz

MAX1448

PIN-PACKAGE

32 TQFP

DRIVERS

Features

OUTPUT

GND

D9–D0

OGND

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