ADS7822 Datasheet, PDF (1/28 Pages) Burr-Brown (TI) – 12-Bit High Speed 2.7V microPower Sampling ANALOG-TO-DIGITAL CONVERTER

BurrĆBrown Products
from Texas Instruments
ADS7822
ADS7822
ADS7822
SBAS062C – JANUARY 1996 – REVISED AUGUST 2007
12-Bit, 200kHz, microPower Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
1
•2 200kHz Sampling Rate
• microPower:
1.6mW at 200kHz
0.54mW at 75kHz
0.06mW at 7.5kHz
• Power Down: 3μA max
• Mini-DIP-8, SO-8, and MSOP-8 Packages
• Pseudo-Differential Input
• Serial Interface
APPLICATIONS
• Battery-Operated Systems
• Remote Data Acquisition
• Isolated Data Acquisition
• Simultaneous Sampling, Multichannel 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 operating at the full 200kHz 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
multichannel systems, and isolated data acquisition.
The ADS7822 is available in a plastic mini-DIP-8, an
SO-8, or an MSOP-8 package.
V_REF
+In
-In
S/H Amp
SAR
CDAC
Comparator
Control
Serial
Interface
D_OUT
DCLOCK
CS/SHDN
1
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1996–2007, Texas Instruments Incorporated