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ADS831
8-Bit, 80MHz Sampling
ANALOG-TO-DIGITAL CONVERTER
TM
FEATURES
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HIGH SNR: 49dB
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INTERNAL / EXTERNAL REFERENCE
OPTION
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SINGLE-ENDED OR
DIFFERENTIAL ANALOG INPUT
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PROGRAMMABLE INPUT RANGE:
1Vp-p /2Vp-p
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LOW POWER: 275mW
LOW DNL: 0.35LSB
SINGLE +5V SUPPLY OPERATION
20-PIN SSOP PACKAGE
DESCRIPTION
The ADS831 is a pipeline, CMOS analog-to-digital con-
verter 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 im-
aging applications. Its low distortion and high SNR give
the extra margin needed for medical imaging, communica-
tions, video, and test instrumentation.
The ADS831 is specified at a maximum sampling fre-
quency of 80MHz and a single-ended input range of 1.5V
to 3.5V. The ADS831 is available in a 20-lead SSOP
package and is pin-for-pin compatible with the 8-bit, 60MHz
ADS830.
APPLICATIONS
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MEDICAL IMAGING
VIDEO DIGITIZING
COMPUTER SCANNERS
COMMUNICATIONS
DISK-DRIVE CONTROL
+V
S
ADS831
CLK
VDRV
Timing
Circuitry
V
IN
IN
T/H
IN
(Opt)
8-Bit
Pipelined
A/D Core
Error
Correction
Logic
3-State
Outputs
D0
•
•
•
D7
Internal
Reference
Optional External
Reference
Int/Ext
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111
Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©
1998 Burr-Brown Corporation
PDS-1430B
Printed in U.S.A. October, 1998
BURR-BROWN [ BURR-BROWN CORPORATION ]
