ADS5220

12-Bit, 40MSPS Sampling, +3.3V

ANALOG-TO-DIGITAL CONVERTER

FEATURES

q HIGH SNR: 70dB

q HIGH SFDR: 88dBFS

q LOW POWER: 195mW

q INTERNAL/EXTERNAL REFERENCE OPTION

q SINGLE-ENDED OR

FULLY DIFFERENTIAL ANALOG INPUT

q PROGRAMMABLE INPUT RANGE

q LOW DNL: 0.3LSB

q SINGLE +3.3V SUPPLY OPERATION

q TQFP-48 PACKAGE

APPLICATIONS

q WIRELESS LOCAL LOOP

q COMMUNICATIONS

q MEDICAL IMAGING

q PORTABLE INSTRUMENTATION

DESCRIPTION

The ADS5220 is a pipeline, CMOS Analog-to-Digital Con-

verter (ADC) that operates from a single +3.3V power

supply. This converter can be operated with a single-ended

input or differential input. The ADS5220 includes a 12-bit

quantizer, high bandwidth track-and-hold, and an internal

reference. It also allows the user to disable the internal

reference and utilize external references which provide ex-

cellent gain and offset matching when used in multi-channel

applications or in applications where full-scale range adjust-

ment is required.

The ADS5220 employs digital error correction techniques to

provide excellent differential linearity for demanding imag-

ing applications. Its low distortion and high SNR give the

extra margin needed for medical imaging, communications,

video, and test instrumentation. The ADS5220 offers power

dissipation of 195mW and also provides two power-down

modes.

The ADS5220 is specified at a maximum sampling fre-

quency of 40MSPS and a differential input range of

1V to 2V. The ADS5220 is available in a TQFP-48 package.

ADS5220

SBAS261A – APRIL 2003 – REVISED MARCH 2004

12-Bit

Pipelined

ADC

Internal

Reference

Timing/Duty Cycle

Adjust

Circuitry

Error

Correction

Logic

3-State

Output

S/H

CLK

VDRV

ADS5220

AV

DD

OE

RSEL

REFB

REFT

OVR

QPD

STPD

D0

D11

•

•

•

VREF

IN

V

IN

IN

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Products conform to specifications per the terms of Texas Instruments

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testing of all parameters.

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