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

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ADS7822
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ADS7822
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 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
converter (A/D) with guaranteed specifications over a
2.7V to 3.6V supply range. It requires very little power
even when operating 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 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 systems, and isolated data acquisition.
The ADS7822 is available 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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©_{1996 Burr-Brown Corporation}
PDS-1358C
Printed in U.S.A., May, 2000