12-Bit, 40MHz Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
a71 LOW POWER: 390mW
a71 INTERNAL REFERENCE
a71 WIDEBAND TRACK-AND-HOLD: 65MHz
a71 SINGLE +5V SUPPLY
DESCRIPTION
The ADS800 is a low-power, monolithic 12-bit, 40MHz Ana-
log-to-Digital (A/D) converter utilizing a small geometry CMOS
process. This complete converter includes a 12-bit quantizer,
wideband track-and-hold, reference, and three-state outputs.
It operates from a single +5V power supply and can be
configured to accept either differential or single-ended input
signals.
The ADS800 employs digital error correction to provide
excellent Nyquist differential linearity performance for de-
manding imaging applications. Its low distortion, high SNR,
and high oversampling capability give it the extra margin
needed for telecommunications, test instrumentation, and
video applications.
This high-performance A/D converter is specified over tem-
perature for AC and DC performance at a 40MHz sampling
rate. The ADS800 is available in an SO-28 package.
Pipeline
A/D
Converter
Timing
Circuitry
Error
Correction
Logic
3-State
Outputs
T/H
12-Bit
Digital
Data
CLK
+1.25V
+3.25V
MSBI OE
IN
IN
REFT
CM
REFB
APPLICATIONS
a71 IF AND BASEBAND DIGITIZATION
a71 DIGITAL COMMUNICATIONS
a71 ULTRASOUND IMAGING
a71 GAMMA CAMERAS
a71 TEST INSTRUMENTATION
a71 CCD IMAGING
Copiers
Scanners
Cameras
a71 VIDEO DIGITIZING
ADS800
SBAS035B – FEBRUARY 1995 – REVISED FEBRUARY 2005
www.ti.com
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright © 1995-2005, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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