AD9244-EVAL Analog Devices, AD9244-EVAL Datasheet

AD9244-EVAL

Manufacturer Part Number

AD9244-EVAL

Description

14-Bit/ 40/65 MSPS Monolithic A/D Converter

Manufacturer

Analog Devices

Datasheet

1.AD9244-EVAL.pdf (17 pages)

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REV. PrD 01/22/02

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

PRODUCT DESCRIPTION

The AD9244 is a monolithic, single 5V supply, 14-bit,

65MSPS Analog to Digital Converter with an on-chip,

high performance sample and hold amplifier and voltage

reference. The AD9244 uses a multi-stage differential

pipelined architecture with output error correction logic to

provide 14-bit accuracy at 65MSPS data rates and

guarantees no missing codes over the full operating

temperature range.

The AD9244 has an on-board, programmable voltage

reference. An external reference can also be chosen to suit

the DC accuracy and temperature drift requirements of the

application.

A differential clock input is used to control all internal

conversion cycles. The digital output data can be pre-

sented in straight binary or in two’s complement format.

An out of range (OTR) signal indicates an overflow condi-

tion, which can be used with the most significant bit to

determine low or high overflow.

Fabricated on an advanced CMOS process, the AD9244 is

available in a 48 pin surface mount plastic package (48

LQFP) and is specified for operation over the industrial

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

Preliminary Technical Data

FEATURES

14-Bit, 65MSPS ADC

Low Power:

On-Chip Reference and Sample/Hold

750MHz Analog Input Bandwidth

SNR = 74dB up to Nyquist

SFDR = 83dB up to Nyquist

Differential Non Linearity Error = ±0.6LSB

Guaranteed No Missing Codes Over Full Temp range

1V to 2V p-p Differential Full Scale Analog Input Range

Single +5.0V Analog Supply, 3/5V Driver Supply

Out-of-Range Indicator

Straight Binary or Two’s Complement Output Data

48-Lead LQFP Package

APPLICATIONS

Communications Subsystems (Microcell, Picocell)

Medical and High End Imaging Equipment

Ultrasound Equipment

590mW at 65MSPS with Fin to Nyquist

340mW at 40MSPS with Fin to Nyquist

PRELIMINARY TECHNICAL DATA

DUTY

CLK+

CLK-

VIN+

VIN-

AGND

PRODUCT HIGHLIGHTS

Low Power—The AD9244 at 590mW consumes a fraction

of the power of presently available in existing, high speed

monolithic solutions.

On-Board Sample-and-Hold (SHA)—The versatile SHA

input can be configured for either single-ended or differen-

tial inputs.

Out of Range (OTR)—The OTR output bit indicates when

the input signal is beyond the AD9244’s input range.

Single Supply—The AD9244 uses a single +5V power sup-

ply simplifying system power supply design. It also features

a separate digital output driver supply line to accommodate

3V and 5V logic families.

IF Sampling—The AD9244 delivers outstanding perfor-

mance at input frequencies beyond the first Nyquist zone.

Sampling at 65MSPS, with an input frequency of 100MHz,

the AD9244 delivers 70dB SNR and SFDR of 82dB.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-

9106,

Tel: 781/329-4700

Fax: 781/326-8703

CML

TIMING

AD9244

AVDD

SHA

FUNCTIONAL BLOCK DIAGRAM

Monolithic A/D Converter

VREF REF

REFERENCE

REFT REFB

PIPELINE

STAGE

EIGHT

SENSE

ADC

14-Bit, 40/65 MSPS

GND

REF

DRGND

DRVDD

AD9244

www.analog.com

DFS

OTR

DB13-DB0

OEB

U.S.A.

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