Analog-to-Digital Converter. ADS7828 Datasheet

ADS7828 Converter. Datasheet pdf. Equivalent

Part ADS7828
Description Analog-to-Digital Converter
Feature ADS7828 ADS7828 ® SBAS181C – NOVEMBER 2001 - REVISED MARCH 2005 12-Bit, 8-Channel Sampling ANALOG-T.
Manufacture Burr-Brown
Datasheet
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ADS7828 ADS7828 ® SBAS181C – NOVEMBER 2001 - REVISED MARCH ADS7828 Datasheet
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ADS7828
ADS7828
ADS7828 ®
SBAS181C – NOVEMBER 2001 - REVISED MARCH 2005
12-Bit, 8-Channel Sampling
ANALOG-TO-DIGITAL CONVERTER
with I2CInterface
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 I2C INTERFACE SUPPORTS:
Standard, Fast, and High-Speed Modes
q TSSOP-16 PACKAGE
APPLICATIONS
q VOLTAGE-SUPPLY MONITORING
q ISOLATED DATA ACQUISITION
q TRANSDUCER INTERFACES
q BATTERY-OPERATED SYSTEMS
q REMOTE DATA ACQUISITION
DESCRIPTION
The ADS7828 is a single-supply, low-power, 12-bit data
acquisition device that features a serial I2C 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 I2C 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.
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
8-Channel
MUX
S/H Amp
SAR
CDAC
Comparator
Serial
Interface
SDA
SCL
A0
A1
REFIN/REFOUT
Buffer
2.5V VREF
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.
I2C is a trademark of Koninklijke Philps Electronics N.V. All other 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.
www.ti.com
Copyright © 2001-2005, Texas Instruments Incorporated



ADS7828
ABSOLUTE MAXIMUM RATINGS(1)
+VDD to GND ........................................................................ 0.3V to +6V
Digital Input Voltage to GND ................................. 0.3V to +VDD + 0.3V
Operating Temperature Range ...................................... 40°C to +105°C
Storage Temperature Range ......................................... 65°C to +150°C
Junction Temperature (TJ max) .................................................... +150°C
TSSOP Package
Power Dissipation .................................................... (TJ max TA)/θJA
θJA Thermal Impedance ........................................................ 240°C/W
Lead Temperature, Soldering
Vapor Phase (60s) ............................................................ +215°C
Infrared (15s) ..................................................................... +220°C
NOTE: (1) Stresses above those listed under Absolute Maximum Ratings may
cause permanent damage to the device. Exposure to absolute maximum
conditions for extended periods may affect device reliability.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas
Instruments recommends that all integrated circuits be handled
with appropriate precautions. Failure to observe proper han-
dling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
PACKAGE/ORDERING INFORMATION(1)
PRODUCT
MAXIMUM
INTEGRAL
LINEARITY
ERROR (LSB)
PACKAGE-LEAD
PACKAGE
DESIGNATOR
SPECIFIED
TEMPERATURE
RANGE
ORDERING
NUMBER
TRANSPORT
MEDIA, QUANTITY
ADS7828E
"
ADS7828EB
"
±2
TSSOP-16
PW
40°C to +85°C
ADS7828E/250
Tape and Reel, 250
"
"
"
"
ADS7828E/2K5 Tape and Reel, 2500
±1
TSSOP-16
PW
40°C to +85°C ADS7828EB/250 Tape and Reel, 250
"
"
"
"
ADS7828EB/2K5 Tape and Reel, 2500
NOTE: (1) For the most current package and ordering information, see the Package Option Addendum at the end of this data sheet, or see the TI web site at www.ti.com.
PIN CONFIGURATION
Top View
CH0 1
CH1 2
CH2 3
CH3 4
CH4 5
CH5 6
CH6 7
CH7 8
ADS7828
TSSOP
16 +VDD
15 SDA
14 SCL
13 A1
12 A0
11 COM
10 REFIN / REFOUT
9 GND
PIN DESCRIPTIONS
PIN
NAME
DESCRIPTION
1
CH0
Analog Input Channel 0
2
CH1
Analog Input Channel 1
3
CH2
Analog Input Channel 2
4
CH3
Analog Input Channel 3
5
CH4
Analog Input Channel 4
6
CH5
Analog Input Channel 5
7
CH6
Analog Input Channel 6
8
CH7
Analog Input Channel 7
9
GND
Analog Ground
10 REFIN / REFOUT Internal +2.5V Reference, External Reference Input
11
COM
Common to Analog Input Channel
12
A0
Slave Address Bit 0
13
A1
Slave Address Bit 1
14
SCL
Serial Clock
15
SDA
Serial Data
16
+VDD
Power Supply, 3.3V Nominal
2
ADS7828
www.ti.com
SBAS181C





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