ADS7828-Q1_16 Datasheet, PDF (1/35 Pages) Texas Instruments – 12-Bit 8-Channel Sampling 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
REF_IN/
V_DD
0.1 µF REF_OUT
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.