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ADS7828-Q1 Datasheet Preview

ADS7828-Q1 Datasheet

Analog-to-Digital Converter

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ADS7828-Q1
SBAS456B – DECEMBER 2008 – REVISED JANUARY 2016
ADS7828-Q1 12-Bit 8-Channel Sampling Analog-to-Digital Converter
With I2C Interface
1 Features
1 Qualified for Automotive Applications
• 8-Channel Multiplexer
• 50-kHz Sampling Rate
• No Missing Codes
• 2.7 V to 5 V Operation
• Internal 2.5-V Reference
• I2C Interface Supports Standard, Fast, and High-
Speed Modes
2 Applications
• Automotive Head Units
• Heads-Up Display (HUD)
• Automotive Battery Management Systems
• Automotive On-Board Chargers
• Voltage-Supply Monitoring
• Isolated Data Acquisition
• Transducer Interfaces
• Battery-Operated Systems
• Remote Data Acquisition
• NOx Sensors
• Ssot and Particulate Matter (PM) Sensors
• Oxygen (O2, Lambda, A/F) Sensors
• Ammonia (NH3) Sensors
• Other Emissions and Gas Sensors
3 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 converter (ADC) 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 ADC to be close to the
input source in remote locations and for applications
requiring isolation. The ADS7828 is available in a
TSSOP-16 package.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ADS7828-Q1
TSSOP (16)
6.40 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
2.7 V to 3.6 V
5W
ADS7828
REFIN/
VDD
0.1 µF REFOUT
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
SDA
SCL
A0
A1
GND
+ 1 µF to
10 µF
2 kW 2 kW
+ 1 µF to
10 µF
Microcontroller
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




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ADS7828-Q1 Datasheet Preview

ADS7828-Q1 Datasheet

Analog-to-Digital Converter

No Preview Available !

ADS7828-Q1
SBAS456B – DECEMBER 2008 – REVISED JANUARY 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics for ADS7828E................... 5
6.6 Electrical Characteristics for ADS7828EB ................ 6
6.7 Electrical Characteristics for ADS7828E................... 8
6.8 Electrical Characteristics for ADS7828EB ................ 9
6.9 Switching Characteristics ........................................ 10
6.10 Typical Characteristics .......................................... 13
7 Detailed Description ............................................ 15
7.1 Overview ................................................................. 15
7.2 Functional Block Diagram ....................................... 15
7.3 Feature Description................................................. 15
7.4 Device Functional Modes........................................ 17
8 Application and Implementation ........................ 22
8.1 Application Information............................................ 22
8.2 Typical Applications ............................................... 25
9 Power Supply Recommendations...................... 27
10 Layout................................................................... 27
10.1 Layout Guidelines ................................................. 27
10.2 Layout Example .................................................... 27
11 Device and Documentation Support ................. 28
11.1 Documentation Support ........................................ 28
11.2 Community Resources.......................................... 28
11.3 Trademarks ........................................................... 28
11.4 Electrostatic Discharge Caution ............................ 28
11.5 Glossary ................................................................ 28
12 Mechanical, Packaging, and Orderable
Information ........................................................... 28
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (October 2009) to Revision B
Page
• Added Device Information table, Thermal Information table, Detailed Description section, Application and
Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation
Support section, and Mechanical, Packaging, and Orderable Information section................................................................ 1
2
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Copyright © 2008–2016, Texas Instruments Incorporated
Product Folder Links: ADS7828-Q1



Part Number ADS7828-Q1
Description Analog-to-Digital Converter
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