ADS7822 Datasheet, PDF (1/20 Pages) Burr-Brown (TI) – 12-Bit High Speed 2.7V microPower Sampling ANALOG-TO-DIGITAL CONVERTER

ADS7822
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ADS7822
SBAS062A – JANUARY 1996 – REVISED MARCH 2005
12-Bit, High-Speed, 2.7V microPower Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q 75kHz SAMPLING RATE
q MICRO POWER:
0.54mW at 75kHz
0.06mW at 7.5kHz
q POWER DOWN: 3µA max
q MINI-DIP-8, SOIC-8, AND MSOP-8
q PSEUDO-DIFFERENTIAL INPUT
q SERIAL INTERFACE
APPLICATIONS
q BATTERY-OPERATED SYSTEMS
q REMOTE DATA ACQUISITION
q ISOLATED DATA ACQUISITION
q SIMULTANEOUS SAMPLING,
MULTI-CHANNEL SYSTEMS
DESCRIPTION
The ADS7822 is a 12-bit sampling analog-to-digital (A/D)
converter with ensured specifications over a 2.7V to 5.25V
supply range. It requires very little power even when oper-
ating at the full 75kHz rate. At lower conversion rates, the
high speed of the device enables it to spend most of its time
in the power-down mode—the power dissipation is less than
60µW at 7.5kHz.
The ADS7822 also features operation from 2.0V to 5V, a
synchronous serial interface, and a pseudo-differential input.
The reference voltage can be set to any level within the
range of 50mV to V_CC.
Ultra low power and small size make the ADS7822 ideal for
battery-operated systems. It is also a perfect fit for remote
data acquisition modules, simultaneous multi-channel sys-
tems, and isolated data acquisition. The ADS7822 is avail-
able in a plastic mini-DIP-8, an SOIC-8, or an MSOP-8
package.
V_REF
+In
–In
S/H Amp
SAR
CDAC
Comparator
Control
Serial
Interface
D_OUT
DCLOCK
CS/SHDN
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PRODUCTION DATA information is current as of publication date.
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standard warranty. Production processing does not necessarily include
testing of all parameters.
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