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Burr-Brown Corporation - ANALOG-TO-DIGITAL CONVERTER

Numéro de référence ADS5221
Description ANALOG-TO-DIGITAL CONVERTER
Fabricant Burr-Brown Corporation 
Logo Burr-Brown Corporation 





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ADS5221 fiche technique
ADS5221
ADS5221
SBAS262A – APRIL 2003 – REVISED DECEMBER 2003
12-Bit, 65MSPS Sampling, +3.3V
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q HIGH SNR: 70dB
q HIGH SFDR: 88dBFS
q LOW POWER: 285mW
q INTERNAL/EXTERNAL REFERENCE OPTION
q SINGLE-ENDED OR
FULLY DIFFERENTIAL ANALOG INPUT
q FLEXIBLE DUTY CYCLE ADJUST CIRCUITRY
q LOW DNL: 0.5LSB
q SINGLE +3.3V SUPPLY OPERATION
q TQFP-48
APPLICATIONS
q WIRELESS LOCAL LOOP
q COMMUNICATIONS
q MEDICAL IMAGING
q PORTABLE INSTRUMENTATION
AVDD
ADS5221
DESCRIPTION
The ADS5221 is a pipeline, CMOS Analog-to-Digital Con-
verter (ADC) that operates from a single +3.3V power
supply. This converter provides excellent performance with a
single-ended input and can be operated with a differential
input for added spurious performance. This high-perfor-
mance converter includes a 12-bit quantizer, high bandwidth
track-and-hold, and a high accuracy internal reference; it
also allows for the user to disable the internal reference and
utilize external references, providing excellent gain and off-
set matching in multi-channel applications or in applications
where full-scale range adjustment is required.
The ADS5221 employs digital error correction techniques to
enable excellent differential linearity for demanding imaging
applications. Its low distortion and high SNR give the extra
margin needed for medical imaging, communications, video,
and test instrumentation. The ADS5221 offers power dissi-
pation of 285mW and also provides two power-down modes.
The ADS5221 is specified at a maximum sampling fre-
quency of 65MHz and a differential input range of 1V to 2V.
The ADS5221 is available in a TQFP-48.
CLK VDRV
Timing/Duty Cycle
Adjust
Circuitry
IN
VIN
IN
S/H
12-Bit
Pipelined
ADC
Error
Correction
Logic
3-State
Output
D0
•••
D11
Internal
Reference
OVR
STPD QPD
REFT REFB
RSEL VREF
OE
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
www.ti.com
Copyright © 2003, Texas Instruments Incorporated

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