ADS5273 Datasheet, PDF (1/16 Pages) Burr-Brown (TI) – 8-Channel, 12-Bit, 70MSPS ADC with Serialized LVDS Interface

ADS5273
SBAS305A − JANUARY 2004 − REVISED FEBRUARY 2004
8-Channel, 12-Bit, 70MSPS ADC
with Serialized LVDS Interface
FEATURES
D Maximum Sample Rate: 70MSPS
D 12-Bit Resolution
D No Missing Codes
D Power Dissipation: 1.1W
D CMOS Technology
D Simultaneous Sample-and-Hold
D 70.5dB SNR at 10MHz IF
D Serialized LVDS Outputs Meet or Exceed the
Requirements of ANSI TIA/EIA-644-A
Standard
D Internal and External References
D 3.3V Digital/Analog Supply
D TQFP-80 PowerPAD Package
APPLICATIONS
D Portable Ultrasound Systems
D Tape Drives
D Test Equipment
DESCRIPTION
The ADS5273 is a high-performance, 70MSPS, 8-channel
parallel analog-to-digital converter (ADC). An internal
reference is provided, simplifying system design
requirements. Low power consumption allows for the
highest of system integration densities. Serial LVDS
outputs reduce the number of interface lines and package
size.
In LVDS (low-voltage differential signaling), an integrated
phase lock loop multiplies the incoming ADC sampling
clock by a factor of 6. This high-frequency LVDS clock is
used in the data serialization and transmission process
and is converted to an LVDS signal for transmission in
parallel with the data. Providing this additional LVDS clock
allows for easy delay matching. The word output of each
internal ADC is serialized and transmitted either MSB or
LSB first. The bit following the rising edge of the ADC clock
output is the first bit of the word.
The ADS5273 provides an internal reference, or can
optionally be driven with an external reference. Best
performance can be achieved through the internal
reference mode.
The device is available in a PowerPAD TQFP-80 package
and is specified over a −40°C to +85°C operating range.
6X ADCLK
ADCLK
PLL
1X ADCLK
IN1_P
S/H
IN1_N
IN2_P
S/H
IN2_N
IN3_P
S/H
IN3_N
IN4_P
S/H
IN4_N
IN5_P
S/H
IN5_N
IN6_P
S/H
IN6_N
IN7_P
S/H
IN7_N
IN8_P
S/H
IN8_N
12−Bit
ADC
12−Bit
ADC
12−Bit
ADC
12−Bit
ADC
12−Bit
ADC
12−Bit
ADC
12−Bit
ADC
12−Bit
ADC
Serializer
Serializer
Serializer
Serializer
Serializer
Serializer
Serializer
Serializer
Reference
Registers
Control
INT/EXT
LCLK_P
LCLK_N
ADCLK_P
ADCLK_N
OUT1_P
OUT1_N
OUT2_P
OUT2_N
OUT3_P
OUT3_N
OUT4_P
OUT4_N
OUT5_P
OUT5_N
OUT6_P
OUT6_N
OUT7_P
OUT7_N
OUT8_P
OUT8_N
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 registered trademark of Texas Instruments. All other trademarks are the property of their respective owners.
PRODUCT PREVIEW information concerns products in the formative or design
phase of development. Characteristic data and other specifications are design
goals. Texas Instruments reserves the right to change or discontinue these
products without notice.
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Copyright  2004, Texas Instruments Incorporated