ADS
834
¤
ADS8344
4
ADS
834
¤
4
SBAS139E – SEPTEMBER 2000 – REVISED SEPTEMBER 2006
16-Bit, 8-Channel Serial Output Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q
PIN FOR PIN WITH ADS7844
q
SINGLE SUPPLY: 2.7V to 5V
q
8-CHANNEL SINGLE-ENDED OR
4-CHANNEL DIFFERENTIAL INPUT
q
UP TO 100kHz CONVERSION RATE
q
84dB SINAD
q
SERIAL INTERFACE
q
QSOP-20 AND SSOP-20 PACKAGES
DESCRIPTION
The ADS8344 is an 8-channel, 16-bit, sampling
Analog-to-Digital (A/D) converter with a synchronous serial
interface. Typical power dissipation is 10mW at a 100kHz
throughput rate and a +5V supply. The reference voltage
(V
REF
) can be varied between 500mV and V
CC
, providing a
corresponding input voltage range of 0V to V
REF
. The
device includes a shutdown mode that reduces power dissi-
pation to under 15µW. The ADS8344 is tested down to 2.7V
operation.
Low power, high speed, and an on-board multiplexer make
the ADS8344 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
ADS8344 is available in a QSOP-20 or SSOP-20 package
and is ensured over the –40°C to +85°C temperature range.
APPLICATIONS
q
q
q
q
q
DATA ACQUISITION
TEST AND MEASUREMENT EQUIPMENT
INDUSTRIAL PROCESS CONTROL
PERSONAL DIGITAL ASSISTANTS
BATTERY-POWERED SYSTEMS
ADS8341
ADS8343
CH0
CH1
CH2
CH3
COM
4-Channel
Multiplexer
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
V
REF
ADS8344
ADS8345
SAR
DCLK
8-Channel
Multiplexer
CDAC
CS
Comparator
Serial
Interface
and
Control
SHDN
D
IN
D
OUT
BUSY
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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 © 2000-2006, Texas Instruments Incorporated
www.ti.com
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