Converter. ADC081S021 Datasheet

ADC081S021 Datasheet PDF


Part

ADC081S021

Description

Single-Channel 50-ksps to 200-ksps 8-Bit A/D Converter

Manufacture

etcTI

Page 30 Pages
Datasheet
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ADC081S021 Datasheet
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ADC081S021
SNAS308G – APRIL 2005 – REVISED MAY 2016
ADC081S021 Single-Channel, 50-ksps to 200-ksps, 8-Bit A/D Converter
1 Features
1 Characterized and Specified Over Multiple
Sample Rates
• 6-Pin WSON and SOT-23 Packages
• Variable Power Management
• Single Power Supply With 2.7-V to 5.25-V Range
• Compatible With SPI™, QSPI™, MICROWIRE™,
and DSP
• DNL: +0.04/–0.03 LSB (Typical)
• INL: +0.04/–0.03 LSB (Typical)
• SNR: 49.6 dB (Typical)
• Power Consumption:
– 3.6-V Supply: 1.3 mW (Typical)
– 5.25-V Supply: 7.7 mW (Typical)
2 Applications
• Portable Systems
• Remote Data Acquisition
• Instrumentation and Control Systems
3 Description
The ADC081S021 device is a low-power, single-
channel CMOS 8-bit analog-to-digital converter with a
high-speed serial interface. Unlike the conventional
practice of specifying performance at a single sample
rate only, the ADC081S021 is fully specified over a
sample rate range of 50 ksps to 200 ksps. The
converter is based upon a successive-approximation
register architecture with an internal track-and-hold
circuit.
The output serial data is straight binary, and is
compatible with several standards, such as SPI,
QSPI, MICROWIRE, and many common DSP serial
interfaces.
The ADC081S021 operates with a single supply that
can range from 2.7 V to 5.25 V. Normal power
consumption using a 3.6-V or 5.25-V supply is
1.3 mW and 7.7 mW, respectively. The power-down
feature reduces the power consumption to as low as
2.6 µW using a 5.25-V supply.
The ADC081S021 is packaged in 6-pin WSON and
SOT-23 packages. Operation over the industrial
temperature range of 40°C to 85°C is ensured.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ADC081S021
SOT-23 (6)
WSON (6)
2.50 mm × 2.20 mm
1.60 mm × 2.90 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Block Diagram
VIN T/H
8-BIT
SUCCESSIVE
APPROXIMATION
ADC
CONTROL
LOGIC
SCLK
CS
SDATA
Copyright © 2016, Texas Instruments Incorporated
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.

ADC081S021 Datasheet
ADC081S021
SNAS308G – APRIL 2005 – REVISED MAY 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4
7.2 ESD Ratings.............................................................. 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 5
7.5 Electrical Characteristics........................................... 5
7.6 Timing Requirements ................................................ 7
7.7 Typical Characteristics .............................................. 9
8 Detailed Description ............................................ 12
8.1 Overview ................................................................. 12
8.2 Functional Block Diagram ....................................... 12
8.3 Feature Description................................................. 12
8.4 Device Functional Modes........................................ 13
9 Application and Implementation ........................ 16
9.1 Application Information............................................ 16
9.2 Typical Application .................................................. 17
10 Power Supply Recommendations ..................... 19
10.1 Noise Considerations ............................................ 19
11 Layout................................................................... 19
11.1 Layout Guidelines ................................................. 19
11.2 Layout Example .................................................... 20
12 Device and Documentation Support ................. 21
12.1 Device Support...................................................... 21
12.2 Documentation Support ........................................ 22
12.3 Community Resources.......................................... 22
12.4 Trademarks ........................................................... 22
12.5 Electrostatic Discharge Caution ............................ 22
12.6 Glossary ................................................................ 22
13 Mechanical, Packaging, and Orderable
Information ........................................................... 22
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision F (November 2013) to Revision G
Page
• Added 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
• Changed table title Pin-Compatible Alternatives by Resolution and Speed to Device Comparison Table ............................ 3
Changes from Revision E (March 2013) to Revision F
Page
• Changed sentence in the "Using the ADC081S021" section ............................................................................................... 12
Changes from Revision D (March 2013) to Revision E
Page
• Changed layout of National Data Sheet to TI format ............................................................................................................. 1
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Copyright © 2005–2016, Texas Instruments Incorporated
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Features Datasheet pdf Product Folder Sample & Buy Technical Documents Tools & Software Support & Community ADC081S021 SNAS308G – APRI L 2005 – REVISED MAY 2016 ADC081S021 Single-Channel, 50-ksps to 200-ksps, 8- Bit A/D Converter 1 Features •1 Char acterized and Specified Over Multiple S ample Rates • 6-Pin WSON and SOT-23 P ackages • Variable Power Management Single Power Supply With 2.7-V to 5. 25-V Range • Compatible With SPI™, QSPI™, MICROWIRE™, and DSP • DNL: +0.04/–0.03 LSB (Typical) • INL: + 0.04/–0.03 LSB (Typical) • SNR: 49. 6 dB (Typical) • Power Consumption: 3.6-V Supply: 1.3 mW (Typical) – 5 .25-V Supply: 7.7 mW (Typical) 2 Applic ations • Portable Systems • Remote Data Acquisition • Instrumentation an d Control Systems 3 Description The AD C081S021 device is a low-power, singlec hannel CMOS 8-bit analog-to-digital con verter with a high-speed serial interfa ce. Unlike the conventional practice of specifying performance at a single sample rate only, the ADC081S021 is fully specified over a sample rat.
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