ADS8321_14 Datasheet, PDF (1/20 Pages) Texas Instruments – 16-Bit, High Speed, MicroPower Sampling ANALOG-TO-DIGITAL CONVERTER

ADS8321
SBAS123B – SEPTEMBER 1999 – REVISED SEPTEMBER 2004
16-Bit, High Speed, MicroPower Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q BIPOLAR INPUT RANGE
q 100kHz SAMPLING RATE
q MICRO POWER:
4.5mW at 100kHz
1mW at 10kHz
q POWER DOWN: 3µA max
q MSOP-8 PACKAGE
q PIN-COMPATIBLE TO ADS7816 AND ADS7822
q SERIAL (SPI/SSI) INTERFACE
APPLICATIONS
q BATTERY OPERATED SYSTEMS
q REMOTE DATA ACQUISITION
q ISOLATED DATA ACQUISITION
q SIMULTANEOUS SAMPLING,
MULTI-CHANNEL SYSTEMS
q INDUSTRIAL CONTROLS
q ROBOTICS
q VIBRATION ANALYSIS
DESCRIPTION
The ADS8321 is a 16-bit sampling analog-to-digital con-
verter (ADC) with tested specifications over a 4.75V to
5.25V supply range. It requires very little power even when
operating at the full 100kHz data rate. At lower data rates,
the high speed of the device enables it to spend most of its
time in the power-down mode—the average power dissipa-
tion is less than 1mW at 10kHz data rate.
The ADS8321 also features a synchronous serial (SPI/SSI
compatible) interface, and a differential input. The refer-
ence voltage can be set to any level within the range of
500mV to V_CC/2.
Ultra-low power and small size make the ADS8321 ideal
for portable and battery-operated systems. It is also a
perfect fit for remote data acquisition modules, simulta-
neous multi-channel systems, and isolated data acquisi-
tion. The ADS8321 is available in an MSOP-8 package.
V_REF
+In
–In
SAR
ADS8321
S/H Amp
CDAC
Comparator
Serial
Interface
D_OUT
DCLOCK
CS/SHDN
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testing of all parameters.
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