ADS5220
12-Bit, 40MSPS Sampling, +3.3V
ANALOG-TO-DIGITAL CONVERTER
FEATURES
a71 HIGH SNR: 70dB
a71 HIGH SFDR: 88dBFS
a71 LOW POWER: 195mW
a71 INTERNAL/EXTERNAL REFERENCE OPTION
a71 SINGLE-ENDED OR
FULLY DIFFERENTIAL ANALOG INPUT
a71 PROGRAMMABLE INPUT RANGE
a71 LOW DNL: 0.3LSB
a71 SINGLE +3.3V SUPPLY OPERATION
a71 TQFP-48 PACKAGE
APPLICATIONS
a71 WIRELESS LOCAL LOOP
a71 COMMUNICATIONS
a71 MEDICAL IMAGING
a71 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
OERSELREFBREFT
OVR
QPDSTPD
D0
D11
•
•
•
VREF
IN
V
IN
IN
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