®
ADS
ADS7811
781
1
16-Bit 250kHz Sampling CMOS
ANALOG-to-DIGITAL CONVERTER
FEATURES
q
250kHz SAMPLING RATE
q
COMPLETE WITH S/H, REF, CLOCK, ETC.
q
96dB min SFDR WITH 100kHz INPUT
q
84dB min SINAD
q
±
2.5V INPUT RANGE
q
28-LEAD SOIC
DESCRIPTION
The ADS7811 is a complete 16-bit sampling analog-
to-digital (A/D) converter featuring excellent AC
performance and a 250kHz throughput rate. The de-
sign includes a 16-bit capacitor-based SAR A/D
converter with an inherent sample and hold (S/H), a
precision reference, and an internal clock. Spurious-
free dynamic range with a 100kHz full-scale sinewave
input is typically greater than 100dB. The
±2.5V
input
range allows development of precision systems using
only
±5V
supplies. The converter is available in a
28-lead SOIC package specified for operation over
the industrial –25°C to +85°C temperature range.
APPLICATIONS
q
WIRELESS BASE STATIONS
q
SPECTRUM ANALYSIS
q
IMAGING SYSTEMS
q
DATA ACQUISITION
Clock
R/C
Successive Approximation Register and Control Logic
CS
BUSY
CDAC
±2.5V Input
Output
Latches
and
Comparator
Three
State
Drivers
Buffer
5kΩ
Internal
+2.5V Ref
Parallel
Data
Bus
REF Out/In
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/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
®
©
1997 Burr-Brown Corporation
PDS-1300A
1
Printed in U.S.A. November, 1997
ADS7811
BURR-BROWN [ BURR-BROWN CORPORATION ]
