ADS7811_15 Datasheet, PDF (1/15 Pages) Texas Instruments – 16-Bit 250kHz Sampling CMOS ANALOG-to-DIGITAL CONVERTER

ADS7811
ADS7811
SBAS041A – NOVEMBER 1997 – REVISED NOVEMBER 2006
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
APPLICATIONS
q WIRELESS BASE STATIONS
q SPECTRUM ANALYSIS
q IMAGING SYSTEMS
q DATA ACQUISITION
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 design
includes a 16-bit capacitor-based SAR A/D
converter with an inherent sample and hold (S/H), a preci-
sion 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 develop-
ment 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 tempera-
ture range.
±2.5V Input
REF Out/In
Clock
Successive Approximation Register and Control Logic
CDAC
Buffer
5kΩ
Internal
+2.5V Ref
Comparator
Output
Latches
and
Three
State
Drivers
R/C
CS
BUSY
Parallel
Data
Bus
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PRODUCTION DATA information is current as of publication date.
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testing of all parameters.
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