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ADC0802 Datasheet Preview

ADC0802 Datasheet

Analog-to-Digital Converter

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ADC0801, ADC0802, ADC0803, ADC0804, ADC0805
SNOSBI1C – NOVEMBER 2009 – REVISED JUNE 2015
ADC080x 8-Bit, µP-Compatible, Analog-to-Digital Converters
1 Features
1 Compatible With 8080-µP Derivatives – No
Interfacing Logic Needed – Access Time 135 ns
• Easy Interface to All Microprocessors, or Operates
as a Stand-Alone Deivce
• Differential Analog Voltage Inputs
• Logic Inputs and Outputs Meet Both MOS and
TTL Voltage-Level Specifications
• Works With 2.5-V (LM336) Voltage Reference
• On-Chip Clock Generator
• 0-V to 5-V Analog Input Voltage Range With
Single 5-V Supply
• No Zero Adjust Required
• 0.3-Inch Standard Width 20-Pin DIP Package
• 20-Pin Molded Chip Carrier or Small Outline
Package
• Operates Ratiometrically or With 5 VDC, 2.5 VDC,
or Analog Span Adjusted Voltage Reference
• Key Specifications
– Resolution: 8 Bits
– Total Error: ±1/4 LSB, ±1/2 LSB and ±1 LSB
– Conversion Time: 100 µs
2 Applications
• Operates With Any 8-Bit µP Processors or as a
Stand-Alone Device
• Interface to Temp Sensors, Voltage Sources, and
Transducers
3 Description
The ADC0801, ADC0802, ADC0803, ADC0804, and
ADC0805 devices are CMOS 8-bit successive
approximation converters (ADC) that use a differential
potentiometric ladder — similar to the 256R products.
These converters are designed to allow operation
with the NSC800 and INS8080A derivative control
bus with Tri-state output latches directly driving the
data bus. These ADCs appear like memory locations
or I/O ports to the microprocessor and no interfacing
logic is needed.
Differential analog voltage inputs allow increasing the
common-mode rejection and offsetting the analog
zero input voltage value. In addition, the voltage
reference input can be adjusted to allow encoding
any smaller analog voltage span to the full 8 bits of
resolution.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ADC0801,
ADC0803
PDIP (20)
26.073 mm × 6.604 mm
ADC0802,
ADC0804
PDIP (20)
SOIC (20)
26.073 mm × 6.604 mm
12.80 mm × 7.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Schematic
ADC0801 Specified With ±¼ LSB Accuracy
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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ADC0802 Datasheet Preview

ADC0802 Datasheet

Analog-to-Digital Converter

No Preview Available !

ADC0801, ADC0802, ADC0803, ADC0804, ADC0805
SNOSBI1C – NOVEMBER 2009 – REVISED JUNE 2015
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 .................................................. 4
6.5 Operating Ratings ..................................................... 5
6.6 Electrical Characteristics........................................... 5
6.7 AC Electrical Characteristics..................................... 5
6.8 Typical Characteristics .............................................. 8
7 Parameter Measurement Information ................ 10
7.1 Tri-State Test Circuits and Waveforms ................... 10
8 Detailed Description ............................................ 11
8.1 Overview ................................................................. 11
8.2 Functional Block Diagram ....................................... 12
8.3 Feature Description................................................. 12
8.4 Device Functional Modes........................................ 14
9 Application and Implementation ........................ 15
9.1 Application Information............................................ 15
9.2 Typical Applications ................................................ 22
9.3 System Examples ................................................... 40
10 Power Supply Recommendations ..................... 48
11 Layout................................................................... 48
11.1 Layout Guidelines ................................................. 48
12 Device and Documentation Support ................. 49
12.1 Related Links ........................................................ 49
12.2 Community Resources.......................................... 49
12.3 Trademarks ........................................................... 49
12.4 Electrostatic Discharge Caution ............................ 49
12.5 Glossary ................................................................ 49
13 Mechanical, Packaging, and Orderable
Information ........................................................... 49
4 Revision History
Changes from Revision B (Feburary 2013) to Revision C
Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
• Removed Ordering Information table .................................................................................................................................... 4
2
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Copyright © 2009–2015, Texas Instruments Incorporated
Product Folder Links: ADC0801 ADC0802 ADC0803 ADC0804 ADC0805


Part Number ADC0802
Description Analog-to-Digital Converter
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