ADS
78
ADS7828
®
28
SBAS181B – NOVEMBER 2001 - REVISED SEPTEMBER 2003
12-Bit, 8-Channel Sampling
ANALOG-TO-DIGITAL CONVERTER
with I
2
C
™
Interface
FEATURES
q
8-CHANNEL MULTIPLEXER
q
50kHz SAMPLING RATE
q
NO MISSING CODES
q
2.7V TO 5V OPERATION
q
INTERNAL 2.5V REFERENCE
q
I
2
C INTERFACE SUPPORTS:
Standard, Fast, and High-Speed Modes
q
TSSOP-16 PACKAGE
DESCRIPTION
The ADS7828 is a single-supply, low-power, 12-bit data
acquisition device that features a serial I
2
C interface and an
8-channel multiplexer. The Analog-to-Digital (A/D) converter
features a sample-and-hold amplifier and internal,
asynchronous clock. The combination of an I
2
C serial,
2-wire interface and micropower consumption makes the
ADS7828 ideal for applications requiring the A/D converter to
be close to the input source in remote locations and for
applications requiring isolation. The ADS7828 is available in
a TSSOP-16 package.
APPLICATIONS
q
q
q
q
q
VOLTAGE-SUPPLY MONITORING
ISOLATED DATA ACQUISITION
TRANSDUCER INTERFACE
BATTERY-OPERATED SYSTEMS
REMOTE DATA ACQUISITION
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
S/H Amp
Comparator
CDAC
Serial
Interface
SDA
SCL
A0
A1
8-Channel
MUX
SAR
2.5V V
REF
REF
IN
/REF
OUT
Buffer
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright © 2001-2003, Texas Instruments Incorporated
www.ti.com
TI [ TEXAS INSTRUMENTS ]
