ADS8383
SLAS005B – DECEMBER 2002 – REVISED MAY 2003
18-BIT, 500-kHz, UNIPOLAR INPUT, MICROPOWER SAMPLING
ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE

FEATURES
C0068 500-kHz Sample Rate
C0068 18-Bit NMC Ensured Over Temperature
C0068 Zero Latency
C0068 Low Power: 110 mW at 500 kHz
C0068 Unipolar Input Range
C0068 Onboard Reference Buffer
C0068 High-Speed Parallel Interface
C0068 Wide Digital Supply
C0068 8-/16-/18-Bit Bus Transfer
C0068 48-Pin TQFP Package
APPLICATIONS
C0068 Medical Instruments
C0068 Optical Networking
C0068 Transducer Interface
C0068 High Accuracy Data Acquisition Systems
C0068 Magnetometers
DESCRIPTION
The ADS8383 is an 18-bit, 500 kHz A/D converter. The
device includes a 18-bit capacitor-based SAR A/D
converter with inherent sample and hold. The ADS8383
offers a full 18-bit interface, a 16-bit option where data is
read using two read cycles or an 8-bit bus option using
three read cycles.
The ADS8383 is available in a 48-lead TQFP package and
is characterized over the industrial –40°C to 85°C
temperature range.
CDAC
_
+
Output
Latches
and
3-State
Drivers
BUS 18/16
BYTE
18-/16-/8-Bit
Parallel DATA
Output Bus
SAR
Conversion
and
Control Logic
Comparator
Clock
+IN
–IN
REFIN
CONVST
BUSY
CS
RD
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.
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.
Copyright  2002–2003, Texas Instruments Incorporated