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Analog-to-Digital Converter. ADC0802 Datasheet

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Analog-to-Digital Converter. ADC0802 Datasheet






ADC0802 Converter. Datasheet pdf. Equivalent




ADC0802 Converter. Datasheet pdf. Equivalent





Part

ADC0802

Description

Analog-to-Digital Converter



Feature


Product Folder Sample & Buy Technical Documents Tools & Software Support & Community ADC0801, ADC0802, ADC0803, A DC0804, ADC0805 SNOSBI1C – NOVEMBER 2 009 – REVISED JUNE 2015 ADC080x 8-Bit , µP-Compatible, Analog-to-Digital Con verters 1 Features •1 Compatible Wit h 8080-µP Derivatives – No Interfaci ng Logic Needed – Access Time 135 ns • Easy Interface to All Microp.
Manufacture

Texas Instruments

Datasheet
Download ADC0802 Datasheet


Texas Instruments ADC0802

ADC0802; rocessors, or Operates as a Stand-Alone Deivce • Differential Analog Voltage Inputs • Logic Inputs and Outputs Mee t Both MOS and TTL Voltage-Level Specif ications • Works With 2.5-V (LM336) V oltage Reference • On-Chip Clock Gene rator • 0-V to 5-V Analog Input Volta ge Range With Single 5-V Supply • No Zero Adjust Required • 0.3-Inch Stand ard Width 20-Pin DIP Package • 2.


Texas Instruments ADC0802

0-Pin Molded Chip Carrier or Small Outli ne Package • Operates Ratiometrically or With 5 VDC, 2.5 VDC, or Analog Span Adjusted Voltage Reference • Key Spe cifications – Resolution: 8 Bits – Total Error: ±1/4 LSB, ±1/2 LSB and 1 LSB – Conversion Time: 100 µs 2 A pplications • Operates With Any 8-Bit µP Processors or as a Stand-Alone Dev ice • Interface to Temp Sensors, Vo.


Texas Instruments ADC0802

ltage Sources, and Transducers 3 Descri ption The ADC0801, ADC0802, ADC0803, AD C0804, and ADC0805 devices are CMOS 8-b it successive approximation converters (ADC) that use a differential potentiom etric ladder — similar to the 256R pr oducts. These converters are designed t o allow operation with the NSC800 and I NS8080A derivative control bus with Tri -state output latche.

Part

ADC0802

Description

Analog-to-Digital Converter



Feature


Product Folder Sample & Buy Technical Documents Tools & Software Support & Community ADC0801, ADC0802, ADC0803, A DC0804, ADC0805 SNOSBI1C – NOVEMBER 2 009 – REVISED JUNE 2015 ADC080x 8-Bit , µP-Compatible, Analog-to-Digital Con verters 1 Features •1 Compatible Wit h 8080-µP Derivatives – No Interfaci ng Logic Needed – Access Time 135 ns • Easy Interface to All Microp.
Manufacture

Texas Instruments

Datasheet
Download ADC0802 Datasheet




 ADC0802
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
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.




 ADC0802
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




 ADC0802
www.ti.com
5 Pin Configuration and Functions
ADC0801, ADC0802, ADC0803, ADC0804, ADC0805
SNOSBI1C – NOVEMBER 2009 – REVISED JUNE 2015
NFH and DW Package
20-Pin PDIP and SOIC
Top View
Pin Functions
PIN
I/O
NO.
NAME
DESCRIPTION
1
CS
I
Chip Select
2
RD
I
Read
3
WR
I
Write
4
CLK IN
I
External Clock input or use internal clock gen with external RC elements
5
INTR
O
Interrupt request
6
VIN(+)
I
Differential analog input+
7
VIN(–)
I
Differential analog input–
8
A GND
I
Analog ground pin
9
VREF/2
I
Reference voltage input for adjustment to correct full scale reading
10
D GND
I
Digital ground pin
11
DB7
O
Data bit 7
12
DB6
O
Data bit 6
13
DB5
O
Data bit 5
14
DB4
O
Data bit 4
15
DB3
O
Data bit 3
16
DB2
O
Data bit 2
17
DB1
O
Data bit 1
18
DB0 (LSB)
O
Data bit 0
19
CLK R
I
RC timing resistor input pin for internal clock gen
20
VCC (or VREF)
I
+5V supply voltage, also upper reference input to the ladder
Copyright © 2009–2015, Texas Instruments Incorporated
Submit Documentation Feedback
3
Product Folder Links: ADC0801 ADC0802 ADC0803 ADC0804 ADC0805



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