Rainbow-electronics MAX1449 Bedienungsanleitung PDF herunterladen

General Description

The MAX1449 +3.3V, 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, consum-

ing only 186mW while delivering a 58.5dB (typ) signal-

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

fully differential input stage has a -3dB 400MHz band-

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

addition to low operating power, the MAX1449 features

a 5µA power-down mode for idle periods.

An internal +2.048V precision bandgap reference is

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

ence structure allow’s 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 MAX1449

are also available. Refer to the MAX1444 data sheet for

a 40Msps version, the MAX1446 data sheet for a

60Msps version, and the MAX1448 data sheet for 80Msps.

The MAX1449 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.

________________________Applications

Ultrasound Imaging

CCD Imaging

Baseband and IF Digitization

Digital Set-Top Boxes

Video Digitizing Applications

Features

♦ Single +3.3V Operation

♦ Excellent Dynamic Performance

58.5dB SNR at f

= 20MHz

72dBc SFDR at f

= 20MHz

♦ Low Power

62mA (Normal Operation)

5µA (Shutdown Mode)

♦ Fully Differential Analog Input

♦ Wide 2Vp-p Differential Input Voltage Range

♦ 400MHz -3dB Input Bandwidth

♦ On-Chip +2.048V Precision Bandgap Reference

♦ CMOS-Compatible Three-State Outputs

♦ 32-Pin TQFP Package

♦ Evaluation Kit Available

MAX1449

10-Bit, 105Msps, Single +3.3V, Low-Power

ADC with Internal Reference

________________________________________________________________ Maxim Integrated Products 1

CLK

IN+

CONTROL

PIPELINE ADC

REF SYSTEM +

BIAS

OUTPUT

DRIVERS

REF

REFINREFOUT REFP COM REFN OE

GND

OGND

D9–D0

IN-

T/H

MAX1449

Functional Diagram

19-4802; Rev 0; 10/00

EVALUATION KIT AVAILABLE

Ordering Information

Pin Configuration appears at end of data sheet.

PART TEMP. RANGE PIN-PACKAGE

MAX1449EHJ -40°C to +85°C 32 TQFP

PART NUMBER SAMPLING SPEED

MAX1444 40Msps

MAX1446 60Msps

MAX1448 80Msps

Pin-Compatible, Lower Speed

Selection Table

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,

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

1 2 3 4 5 6 ... 17 18

ADC with Internal Reference 1

Inhaltsverzeichnis

Seite 1 - ADC with Internal Reference

General DescriptionThe MAX1449 +3.3V, 10-bit analog-to-digital converter(ADC) features a fully differential input, a pipelined 10-stage ADC architectu

Seite 2

MAX144910-Bit, 105Msps, Single +3.3V, Low-PowerADC with Internal Reference10 _________________________________________________________________________

Seite 3