C0065C0068C0083C0053C0050C0048C0052
SBAS268A – JUNE 2002 – REVISED JULY 2002
C0068C0117C0097C0108C0032C0049C0048C0262C0066C0105C0116C0032C0052C0048C0077C0083C0080C0083C0032C0076C0111C0119C0262C0080C0111C0119C0101C0114
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FEATURES
C0068 3.3V Single-Supply Operation
C0068 Dual Simultaneous Sample-and-Hold Inputs
C0068 Differential or Single-Ended Analog Inputs
C0068 Programmable Gain Amplifier: 0dB to 18dB
C0068 Separate Serial Control Interface
C0068 Single or Dual Parallel Bus Output
C0068 60dB SNR at f
IN
= 10.5MHz
C0068 73dB SFDR at f
IN
= 10.5MHz
C0068 Low Power: 275mW
C0068 300MHz Analog Input Bandwidth
C0068 3.3V TTL/CMOS-Compatible Digital I/O
C0068 Internal or External Reference
C0068 Adjustable Reference Input Range
C0068 Power-Down (Standby) Mode
C0068 TQFP-48 Package
APPLICATIONS
C0068 Digital Communications (Baseband Sampling)
C0068 Portable Instrumentation
C0068 Video Processing
DESCRIPTION
The ADS5204 is a dual 10-bit, 40MSPS Analog-to-Digital
Converter (ADC). It simultaneously converts each analog
input signal into a 10-bit, binary coded digital word up to
a maximum sampling rate of 40MSPS per channel. All
digital inputs and outputs are 3.3VTTL/CMOS compat-
ible.
An innovative dual pipeline architecture implemented in
a CMOS process and the 3.3V supply results in very low
power dissipation. In order to provide maximum flexibil-
ity, both top and bottom voltage references can be set
from user-supplied voltages. Alternatively, if no external
references are available, the on-chip internal refer-
ences can be used. Both ADCs share a common refer-
ence to improve offset and gain matching. If external
reference voltage levels are available, the internal refer-
ences can be powered down independently from the
rest of the chip, resulting in even greater power savings.
The ADS5204 also features dual, onboard Programmable
Gain Amplifiers (PGAs) that allow a setting of 0dB to 18dB
to adjust the gain of each set of inputs in order to match
the amplitude of the incoming signal.
The ADS5204 is characterized for operation from –40°C
to +85°C and is available in a TQFP-48 package.
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.
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Copyright  2002, Texas Instruments Incorporated