ADS5220
ADS
522
0
SBAS261A – APRIL 2003 – REVISED MARCH 2004
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
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SINGLE +3.3V SUPPLY OPERATION
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TQFP-48 PACKAGE
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.
APPLICATIONS
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WIRELESS LOCAL LOOP
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COMMUNICATIONS
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MEDICAL IMAGING
q
PORTABLE INSTRUMENTATION
AV
DD
ADS5220
CLK
VDRV
Timing/Duty Cycle
Adjust
Circuitry
IN
V
IN
IN
S/H
12-Bit
Pipelined
ADC
Error
Correction
Logic
3-State
Output
D0
•
•
•
D11
OVR
Internal
Reference
STPD QPD
REFT REFB
RSEL VREF
OE
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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.
Copyright © 2003-2004, Texas Instruments Incorporated
www.ti.com
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