FEATURES
HIGH SNR: 60dB
HIGH SFDR: 72dBFS
LOW POWER: 190mW
INTERNAL/EXTERNAL REFERENCE OPTION
SINGLE-ENDED OR
FULLY DIFFERENTIAL ANALOG INPUT
PROGRAMMABLE INPUT RANGE
LOW DNL: 0.5LSB
SINGLE +5V SUPPLY OPERATION
+3V OR +5V LOGIC I/O COMPATIBLE (ADS825)
POWER DOWN: 20mW
SSOP-28 PACKAGE

APPLICATIONS
MEDICAL IMAGING
TEST EQUIPMENT
COMPUTER SCANNERS
COMMUNICATIONS
VIDEO DIGITIZING

DESCRIPTION
The ADS822 and ADS825 are pipeline, CMOS Analog-to-Digital
Converters (ADC) that operate from a single +5V power supply.
These converters provide excellent performance with a single-ended
input and can be operated with a differential input for added spurious
performance. These high-performance converters include a 10-bit
quantizer, high-bandwidth track-and-hold, and a high-accuracy internal
reference. They also allow for the user to disable the internal
reference and utilize external references. This external reference
option provides excellent gain and offset matching when used in
multichannel applications, or in applications where full-scale range
adjustment is required.
The ADS822 and ADS825 employ digital error correction techniques
to provide 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 ADS822 and ADS825 offer power dissipation of 190mW and also
provide a power-down mode, thus reducing power dissipation to only
20mW. The ADS825 is +3V or +5V logic I/O compatible.
The ADS822 and ADS825 are specified at a maximum sampling
frequency of 40MSPS and a single-ended input range of 1.5V to 3.5V.
The ADS822 and ADS825 are available in an SSOP-28 package and
are pin-for-pin compatible with the 10-bit, 60MSPS ADS823 and
ADS826, and the 10-bit, 75MSPS ADS828, providing an upgrade
path to higher sampling frequencies.