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Burr-Brown Corporation
Burr-Brown Corporation

ADS5221 Datasheet Preview

ADS5221 Datasheet

ANALOG-TO-DIGITAL CONVERTER

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ADS5221 pdf
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



Burr-Brown Corporation
Burr-Brown Corporation

ADS5221 Datasheet Preview

ADS5221 Datasheet

ANALOG-TO-DIGITAL CONVERTER

No Preview Available !

ADS5221 pdf
ABSOLUTE MAXIMUM RATINGS(1)
AVDD, DVDD, VDRV .......................................................................... +3.8V
Analog Input ........................................................... 0.3V to (AVDD + 0.3V)
Logic Input ............................................................. 0.3V to (AVDD + 0.3V)
Case Temperature ......................................................................... +100°C
Junction Temperature .................................................................... +150°C
Storage Temperature ..................................................................... +150°C
NOTE: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade
device reliability.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instru-
ments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
PACKAGE/ORDERING INFORMATION(1)
PRODUCT
ADS5221
"
ADS5221
"
PACKAGE-LEAD
TQFP-48
"
QFN-48(2)
"
PACKAGE
DESIGNATOR
PFB
"
RGZ
"
SPECIFIED
TEMPERATURE
RANGE
40°C to +85°C
"
40°C to +85°C
"
PACKAGE
MARKING
ADS5221PFB
"
ADS5221RGZ
"
ORDERING
NUMBER
ADS5221PFBT
ADS5221PFBR
ADS5221RGZ
ADS5221RGZR
TRANSPORT
MEDIA, QUANTITY
Tape and Reel, 250
Tape and Reel, 2000
Rails, 52
Tape and Reel, 1000
NOTE: (1) For the most current package and ordering information, see the Package Option Addendum located at the end of this data sheet.
(2) This package available beginning Q1 2004.
ELECTRICAL CHARACTERISTICS: AVDD = 3.3V
TMIN = 40°C, TMAX = +85°C, typical values are at TA = +25°C, sampling rate = 65MSPS, 50% clock duty cycle, AVDD = 3.3V, VDRV = 2.5V, 1dBFS, internal reference
voltage, and 2VPP differential input, unless otherwise noted.
ADS5221
PARAMETER
RESOLUTION
SPECIFIED TEMPERATURE RANGE
ANALOG INPUT
Single-Ended Input Range
Optional Single-Ended Input Range
Differential Input Range
Analog Input Bias Current
Input Impedance
Analog Input Bandwidth
CONVERSION CHARACTERISTICS
Sample Rate
Data Latency
DYNAMIC CHARACTERISTICS
Differential Linearity Error (largest code error)
f = 2.4MHz
f = 9.7MHz
No Missing Codes
Integral Nonlinearity Error, f = 2.4MHz
Spurious-Free Dynamic Range(1)
f = 2.4MHz
f = 9.7MHz
f = 32.5MHz
2-Tone Intermodulation Distortion(3)
f = 9.5MHz and 10.5MHz (7dB each tone)
Signal-to-Noise Ratio (SNR)
f = 2.4MHz
f = 9.7MHz
f = 32.5MHz
Signal-to-(Noise + Distortion) (SINAD)
f = 2.4MHz
f = 9.7MHz
f = 32.5MHz
Effective Number of Bits(4), f = 2.4MHz
Output Noise
Aperture Delay Time
Aperture Jitter
Over-Voltage Recovery Time
Full-Scale Step Acquisition Time
CONDITIONS
Ambient Air
2VPP
1VPP
2VPP
Static, No Clock
3dBFS Input
Referred to Full-Scale
at 25°C
Referred to Full-Scale
at 25°C
Referred to Full-Scale
at 25°C
Input Tied to Common-Mode
MIN
TYP
MAX
12 Tested
40 to +85
UNITS
Bits
°C
0.5 2.5 V
1 2V
1 2V
1 µA
1.25 || 5
M|| pF
300 MHz
1M
65M
Samples/s
5 Clock Cycle
±0.3
±0.5
Tested
±0.5
±0.75
±1.75
LSB
LSB
LSBs
90
78 88
85
dBFS(2)
dBFS
dBFS
92 dBFS
70
68 70
69
dB
dB
dB
70
67 70
68
11.2
0.2
3.0
1.2
1.0
5
dB
dB
dB
Bits
LSBs rms
ns
ps rms
Clock Cycle
ns
2 ADS5221
www.ti.com
SBAS262A


Part Number ADS5221
Description ANALOG-TO-DIGITAL CONVERTER
Maker Burr-Brown Corporation
Total Page 19 Pages
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