FEATURES

HIGH SNR: 49dB

INTERNAL OR EXTERNAL REFERENCE

OPTION

SINGLE-ENDED OR

DIFFERENTIAL ANALOG INPUT

PROGRAMMABLE INPUT RANGE:

1Vp-p /2Vp-p

LOW POWER: 275mW

LOW DNL: 0.35LSB

SINGLE +5V SUPPLY OPERATION

SSOP-20 PACKAGE

APPLICATIONS

MEDICAL IMAGING

VIDEO DIGITIZING

COMPUTER SCANNERS

COMMUNICATIONS

DISK-DRIVE CONTROL

DESCRIPTION

The ADS831 is a pipeline, CMOS Analog-to-Digital (A/D) converter

that operates from a single +5V 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 performance converter

includes an 8-bit quantizer, high bandwidth

track/hold, and a high accuracy internal reference. It also allows 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 multi-channel applications or in

applications where DC full scale range adjustment is required.

The ADS831 employs 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 ADS831 is specified at a maximum sampling frequency of

80MHz and a single-ended input range of 1.5V to 3.5V. The

ADS831 is available in an SSOP-20 package and is pin-for-pin

compatible with the 8-bit, 60MHz ADS830.