®
1 ADS8344
ADS8344
16-Bit, 8-Channel Serial Output Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
l PIN FOR PIN WITH ADS7844
l SINGLE SUPPLY: 2.7V to 5V
l 8-CHANNEL SINGLE-ENDED OR
4-CHANNEL DIFFERENTIAL INPUT
l UP TO 100kHz CONVERSION RATE
l 84dB SINAD
l SERIAL INTERFACE
l QSOP-20 AND SSOP-20 PACKAGES
®
DESCRIPTION
The ADS8344 is an 8-channel, 16-bit sampling ana-
log-to-digital converter (ADC) 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 which reduces power dissipation to under 15µW.
The ADS8344 is guaranteed down to 2.7V operation.
Low power, high speed, and on-board multiplexer
make the ADS8344 ideal for battery operated systems
such as personal digital assistants, portable multi-
channel data loggers, and measurement equipment.
The serial interface also provides low-cost isolation
for remote data acquisition. The ADS8344 is available
in a QSOP-20 or a SSOP-20 package and is guaran-
teed over the –40°C to +85°C temperature range.
©
2000 Burr-Brown Corporation PDS-1571A Printed in U.S.A. April, 2000
APPLICATIONS
l DATA ACQUISITION
l TEST AND MEASUREMENT
l INDUSTRIAL PROCESS CONTROL
l PERSONAL DIGITAL ASSISTANTS
l BATTERY-POWERED SYSTEMS
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Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
For most current data sheet and other product
information, visit www.burr-brown.com
CDAC
SAR
Comparator
Eight
Channel
Multiplexer
Serial
Interface
and
Control
CH4
CH5
CH6
CH7
COM
V
REF
CS
SHDN
DIN
DOUT
BUSY
DCLK
CH0
CH1
CH2
CH3
¤ADS8344
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ADS8344