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Burr-Brown Corporation
Burr-Brown Corporation

ADS5242 Datasheet Preview

ADS5242 Datasheet

65MSPS Analog-to-Digital Converter

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ADS5242 pdf
BurrĆBrown Products
from Texas Instruments
ADS5242
SBAS330C – OCTOBER 2004 – REVISED OCTOBER 2005
4-Channel, 12-Bit, 65MSPS Analog-to-Digital Converter
with Serial LVDS Interface
FEATURES
Maximum Sample Rate: 65MSPS
12-Bit Resolution
No Missing Codes
Total Power Dissipation
Internal Reference: 660mW
External Reference: 594mW
CMOS Technology
Simultaneous Sample-and-Hold
70.8dBFS SNR at 10MHz IF
3.3V Digital/Analog Supply
Serialized LVDS Outputs
Integrated Frame and Bit Patterns
Option to Double LVDS Clock Output Currents
Four Current Modes for LVDS
Pin- and Format-Compatible Family
HTQFP-64 PowerPAD™ Package
APPLICATIONS
Portable Ultrasound Systems
Tape Drives
Test Equipment
Optical Networking
Communications
DESCRIPTION
The ADS5242 is a high-performance, 65MSPS,
4-channel analog-to-digital converter (ADC). Internal
references are provided, simplifying system design
requirements. Low power consumption allows for the
highest of system integration densities. Serial LVDS
(low-voltage differential signaling) outputs reduce the
number of interface lines and package size.
MODEL
ADS5240
RELATED PRODUCTS
RESOLUTION
(BITS)
12
SAMPLE RATE
(MSPS)
40
CHANNELS
4
An integrated phase lock loop (PLL) multiplies the
incoming ADC sampling clock by a factor of 12. This
high-frequency LVDS clock is used in the data
serialization and transmission process. The word
output of each internal ADC is serialized and
transmitted either MSB or LSB first. In addition to the
four data outputs, a bit clock and a word clock are
also transmitted. The bit clock is at 6x the speed of
the sampling clock, whereas the word clock is at the
same speed of the sampling clock.
The ADS5242 provides internal references, or can
optionally be driven with external references. Best
performance can be achieved through the internal
reference mode.
The device is available in an HTQFP-64 PowerPAD
package and is specified over a –40°C to +85°C
operating range.
ADCLK
6x ADCLK
12x ADCLK
PLL
1x ADCLK
IN1P
IN1N
S/H
IN2P
IN2N
S/H
IN3P
IN3N
S/H
IN4P
IN4N
S/H
12− Bit
ADC
12− Bit
ADC
12− Bit
ADC
12− Bit
ADC
Serializer
Serializer
Serializer
Serializer
R e fe re n c e
Registers
Control
INT/EXT
LCLKP
LCLKN
ADCLKP
ADCLKN
OUT1P
OUT1N
OUT2P
OUT2N
OUT3P
OUT3N
OUT4P
OUT4N
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.
PowerPAD is a trademark of Texas Instruments.
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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004–2005, Texas Instruments Incorporated



Burr-Brown Corporation
Burr-Brown Corporation

ADS5242 Datasheet Preview

ADS5242 Datasheet

65MSPS Analog-to-Digital Converter

No Preview Available !

ADS5242 pdf
ADS5242
SBAS330C – OCTOBER 2004 – REVISED OCTOBER 2005
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments 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.
ORDERING INFORMATION(1)
PACKAGE
PRODUCT PACKAGE-LEAD(2) DESIGNATOR
ADS5242
HTQFP-64
PAP
SPECIFIED
TEMPERATURE
RANGE
–40°C to +85°C
PACKAGE
MARKING
ADS5242IPAP
ORDERING
NUMBER
ADS5242IPAP
ADS5242IPAPT
TRANSPORT
MEDIA, QUANTITY
Tray, 160
Tape and Reel, 250
(1) For the most current package and ordering information, see the Package Option Addendum located at the end of this data sheet.
(2) Thermal pad size: 5.29mm × 5.29mm (min), 6.50mm × 6.50mm (max).
ABSOLUTE MAXIMUM RATINGS(1)
Supply Voltage Range, AVDD
Supply Voltage Range, LVDD
Voltage Between AVSS and LVSS
Voltage Between AVDD and LVDD
Voltage Applied to External REF Pins
All LVDS Data and Clock Outputs
Analog Input Pins(2)
Operating Free-Air Temperature Range, TA
Lead Temperature, 1.6mm (1/16" from case for 10s)
Junction Temperature
Storage Temperature Range
–0.3V to +3.8V
–0.3V to +3.8V
–0.3V to +0.3V
–0.3V to +0.3V
–0.3V to +2.4V
–0.3V to +2.4V
–0.3V to min. [3.3V, (AVDD + 0.3V)]
–40°C to +85°C
+260°C
+105°C
–65°C to +150°C
(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may
degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those specified is not supported.
(2) The DC voltage applied on the input pins should not go below –0.3V. Also, the DC voltage should be limited to the lower of either 3.3V
or (AVDD + 0.3V). If the input can go higher than +3.3V, then a resistor greater than or equal to 25should be added in series with
each of the input pins. Also, the duty cycle of the overshoot beyond +3.3V should be limited. The overshoot duty cycle can be defined
either as a percentage of the time of overshoot over a clock period, or over the entire device lifetime. For a peak voltage between +3.3V
and +3.5V, a duty cycle up to 10% is acceptable. For a peak voltage between +3.5V and +3.7V, the overshoot duty cycle should not
exceed 1%. Any overshoot beyond +3.7V should be restricted to less than 0.1% duty cycle, and never exceed +3.9V.
2


Part Number ADS5242
Description 65MSPS Analog-to-Digital Converter
Maker Burr-Brown Corporation
Total Page 29 Pages
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