Converter. ADC084S021 Datasheet

ADC084S021 Datasheet PDF


Part

ADC084S021

Description

4-Channel 50Ksps to 200Ksps 8-Bit A/D Converter

Manufacture

etcTI

Page 30 Pages
Datasheet
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ADC084S021 Datasheet
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ADC084S021
SNAS279F – APRIL 2005 – REVISED JULY 2016
ADC084S021 4-Channel, 50 Ksps to 200 Ksps, 8-Bit A/D Converter
1 Features
1 Specified Over a Range of Sample Rates
• Four Input Channels
• Variable Power Management
• Single Power Supply With 2.7 V to 5.25 V Range
• DNL: ±0.04 LSB (Typical)
• INL: ±0.04 LSB (Typical)
• SNR: 49.6 dB (Typical)
• Power Consumption:
– 3-V Supply: 1.6 mW (Typical)
– 5-V Supply: 5.8 mW (Typical)
2 Applications
• Portable Systems
• Remote Data Acquisition
• Instrumentation and Control Systems
3 Description
The ADC084S021 is a low-power, four-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 ADC084S021 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. It can be configured to accept up to four input
signals at inputs IN1 through IN4.
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 ADC084S021 operates with a single supply that
can range from 2.7 V to 5.25 V. Normal power
consumption using a 3-V or 5-V supply is 1.6 mW
and 5.8 mW (respectively). The power-down feature
reduces the power consumption to just 0.12 µW using
a 3-V supply or 0.35 µW using a 5-V supply.
The ADC084S021 comes in a 10-pin VSSOP
package. Operation over the industrial temperature
range of –40°C to 85°C is ensured.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ADC084S021
VSSOP (10)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Block Diagram
IN1
MUX
IN4
T/H
GND
8-Bit
SUCCESSIVE
APPROXIMATION
ADC
VA
GND
CONTROL
LOGIC
SCLK
CS
DIN
DOUT
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.

ADC084S021 Datasheet
ADC084S021
SNAS279F – APRIL 2005 – REVISED JULY 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 ............................................ 16
8.1 Overview ................................................................. 16
8.2 Functional Block Diagram ....................................... 16
8.3 Feature Description................................................. 16
8.4 Device Functional Modes ....................................... 18
8.5 Register Maps ......................................................... 19
9 Application and Implementation ........................ 20
9.1 Application Information............................................ 20
9.2 Typical Application .................................................. 20
10 Power Supply Recommendations ..................... 21
10.1 Power Management .............................................. 21
10.2 Noise Considerations ............................................ 21
11 Layout................................................................... 22
11.1 Layout Guidelines ................................................. 22
11.2 Layout Example .................................................... 22
12 Device and Documentation Support ................. 23
12.1 Device Support...................................................... 23
12.2 Receiving Notification of Documentation Updates 24
12.3 Community Resources.......................................... 24
12.4 Trademarks ........................................................... 24
12.5 Electrostatic Discharge Caution ............................ 24
12.6 Glossary ................................................................ 24
13 Mechanical, Packaging, and Orderable
Information ........................................................... 25
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision E (March 2013) to Revision F
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
• Added Updated values in Thermal Information table ............................................................................................................. 5
Changes from Revision D (March 2013) to Revision E
Page
• Changed layout of National Semiconductor Data Sheet to TI format .................................................................................... 1
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Copyright © 2005–2016, Texas Instruments Incorporated
Product Folder Links: ADC084S021


Features Datasheet pdf Product Folder Sample & Buy Technical Documents Tools & Software Support & Community ADC084S021 SNAS279F – APRI L 2005 – REVISED JULY 2016 ADC084S021 4-Channel, 50 Ksps to 200 Ksps, 8-Bit A/D Converter 1 Features •1 Specifie d Over a Range of Sample Rates • Four Input Channels • Variable Power Mana gement • Single Power Supply With 2.7 V to 5.25 V Range • DNL: ±0.04 LSB (Typical) • INL: ±0.04 LSB (Typical) • SNR: 49.6 dB (Typical) • Power C onsumption: – 3-V Supply: 1.6 mW (Typ ical) – 5-V Supply: 5.8 mW (Typical) 2 Applications • Portable Systems • Remote Data Acquisition • Instrument ation and Control Systems 3 Descriptio n The ADC084S021 is a low-power, four-c hannel CMOS 8-bit analog-to-digital con verter with a highspeed serial interfac e. Unlike the conventional practice of specifying performance at a single samp le rate only, the ADC084S021 is fully s pecified over a sample rate range of 50 ksps to 200 ksps. The converter is based upon a successive-approximation register architecture.
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