ADS8343
16-Bit, 4-Channel Serial Output Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
a71 BIPOLAR INPUT RANGE
a71 PIN-FOR-PIN COMPATIBLE WITH THE
ADS7841 AND ADS8341
a71 SINGLE SUPPLY: 2.7V to 5V
a71 4-CHANNEL SINGLE-ENDED OR
2-CHANNEL DIFFERENTIAL INPUT
a71 UP TO 100kHz CONVERSION RATE
a71 86dB SINAD
a71 SERIAL INTERFACE
a71 SSOP-16 PACKAGE
DESCRIPTION
The ADS8343 is a 4-channel, 16-bit sampling Analog-to-
Digital (A/D) converter with a synchronous serial interface.
Typical power dissipation is 8mW at a 100kHz throughput
rate and a +5V supply. The reference voltage (V
REF
) can be
varied between 500mV and V
CC
/2, providing a corresponding
input voltage range of ±V
REF
. The device includes a shut-
down mode which reduces power dissipation to under 15µW.
The ADS8343 is ensured down to 2.7V operation.
Low power, high speed, and an onboard multiplexer make
the ADS8343 ideal for battery-operated systems such as
personal digital assistants, portable multi-channel data log-
gers, and measurement equipment. The serial interface also
provides low-cost isolation for remote data acquisition. The
ADS8343 is available in an SSOP-16 package and is en-
sured over the –40°C to +85°C temperature range.
APPLICATIONS
a71 DATA ACQUISITION
a71 TEST AND MEASUREMENT
a71 INDUSTRIAL PROCESS CONTROL
a71 PERSONAL DIGITAL ASSISTANTS
a71 BATTERY-POWERED SYSTEMS
CDAC
SAR
Comparator
Four
Channel
Multiplexer
Serial
Interface
and
Control
CH0
CH1
CH2
CH3
COM
V
REF
CS
SHDN
DIN
DOUT
BUSY
DCLK
AD
S83
43
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Copyright © 2001, 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.
SBAS183A – JANUARY 2001 – REVISED OCTOBER 2002
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.