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ADS7263 Datasheet Preview

ADS7263 Datasheet

Analog-to-Digital Converter

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ADS8363, ADS7263, ADS7223
SBAS523D – OCTOBER 2010 – REVISED SEPTEMBER 2017
ADSxxx3 Dual, 1-MSPS, 16-, 14-, and 12-Bit, 4×2 or 2×2 Channel, Simultaneous Sampling
Analog-to-Digital Converter
1 Features
1 Eight Pseudo- or Four Fully-Differential Inputs
• Simultaneous Sampling of Two Channels
• Excellent AC Performance:
– SNR:
93 dB (ADS8363)
85 dB (ADS7263)
73 dB (ADS7223)
– THD:
–98 dB (ADS8363)
–92 dB (ADS7263)
–86 dB (ADS7223)
• Dual Programmable and Buffered 2.5-V
Reference Allows:
– Two Different Input Voltage Range Settings
– Two-Level PGA Implementation
• Programmable Auto-Sequencer
• Integrated Data Storage (up to 4 per channel) for
Oversampling Applications
• 2-Bit Counter for Safety Applications
• Fully Specified Over the Extended Industrial
Temperature Range: –40°C to +125°C
2 Applications
• Motor Control: Current and Position Measurement
including Safety Applications
• Power Quality Measurement
• Three-Phase Power Control
• Programmable Logic Controllers
• Industrial Automation
• Protection Relays
3 Description
The ADS8363 is a dual, 16-bit, 1-MSPS analog-to-
digital converter (ADC) with eight pseudo- or four
fully-differential input channels grouped into two pairs
for simultaneous signal acquisition. The analog inputs
are maintained differentially to the input of the ADC.
The input multiplexer can be used in either pseudo-
differential mode, supporting up to four channels per
ADC (4x2), or in fully-differential mode that allows to
convert up to two inputs per ADC (2x2). The
ADS7263 is a 14-bit version and the ADS7223 is a
12-bit version of the ADS8363.
The ADS8363, ADS7263, and ADS7223 offer two
programmable reference outputs, flexible supply
voltage ranges, a programmable auto-sequencer,
data storage of up to four conversion results per
channel, and several power-down features.
All devices are offered in a 5-mm x 5-mm, 32-pin
VQFN package.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ADSxxx3
VQFN (32)
5.00 mm x 5.00 mm
(1) For all available packages, see the package option addendum
at the end of the data sheet.
Functional Block Diagram
AVDD
DVDD
CHA1P/CHA3
CHA1N/CHA2
CHA0P/CHA1
CHA0N/CHA0
CMA
CHB1P/CHB3
CHB1N/CHB2
CHB0P/CHB1
CHB0N/CHB0
CMB
Input
Mux
Input
Mux
SAR ADC
REF1
REF2
SAR ADC
REF1
REFIO1
REF2
REFIO2
String
DAC
String
DAC
2.5V
REF
Serial
Interface
and
FIFO
CS
CLOCK
BUSY
SDI
RD
SDOA
SDOB
Control
Logic
M0
M1
CONVST
RGND
AGND
DGND
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.




etcTI

ADS7263 Datasheet Preview

ADS7263 Datasheet

Analog-to-Digital Converter

No Preview Available !

ADS8363, ADS7263, ADS7223
SBAS523D – OCTOBER 2010 – REVISED SEPTEMBER 2017
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 4
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 6
7.1 Absolute Maximum Ratings ...................................... 6
7.2 ESD Ratings.............................................................. 6
7.3 Recommended Operating Conditions....................... 6
7.4 Thermal Information .................................................. 6
7.5 Electrical Characteristics: General ............................ 7
7.6 Electrical Characteristics: ADS8363 ......................... 9
7.7 Electrical Characteristics: ADS7263 ......................... 9
7.8 Electrical Characteristics: ADS7223 ....................... 10
7.9 Switching Characteristics ........................................ 11
7.10 Typical Characteristics .......................................... 14
8 Detailed Description ............................................ 18
8.1 Overview ................................................................. 18
8.2 Functional Block Diagram ....................................... 18
8.3 Feature Description................................................. 19
8.4 Device Functional Modes........................................ 24
8.5 Programming........................................................... 26
8.6 Register Maps ......................................................... 34
9 Application and Implementation ........................ 42
9.1 Application Information............................................ 42
10 Power Supply Recommendations ..................... 45
11 Layout................................................................... 46
11.1 Layout Guidelines ................................................. 46
11.2 Layout Example .................................................... 47
12 Device and Documentation Support ................. 48
12.1 Documentation Support ........................................ 48
12.2 Related Links ........................................................ 48
12.3 Receiving Notification of Documentation Updates 48
12.4 Community Resources.......................................... 48
12.5 Trademarks ........................................................... 48
12.6 Electrostatic Discharge Caution ............................ 48
12.7 Glossary ................................................................ 48
13 Mechanical, Packaging, and Orderable
Information ........................................................... 49
4 Revision History
Changes from Revision C (January 2017) to Revision D
Page
• Changed operating temperature from 85°C to 125°C in Recommended Operating Conditions table ................................... 6
Changes from Revision B (January 2011) to Revision C
Page
• Added Device Information table, ESD Ratings table, Recommended Operating Conditions table, Feature
Description section, Device Functional Modes section, Application and Implementation section, Power Supply
Recommendations section, Layout section, Device and Documentation Support section, and Mechanical,
Packaging, and Orderable Information section ...................................................................................................................... 1
• Changed ADS8363/7263/7223 to ADS8363, ADS7263, and ADS7223 throughout document ............................................. 1
• Changed Description section: changed last sentence of first paragraph and last paragraph ............................................... 1
• Changed Device Comparison Table title ................................................................................................................................ 4
• Changed Pin Configuration and Functions section title.......................................................................................................... 4
• Changed footnote of Figure 1 and for clarity ........................................................................................................................ 12
• Changed second and third columns of Midscale – 1 LSB row in Output Data Format table: changed –VREF to –2VREF
in column 2, changed last two voltage values in column 3 .................................................................................................. 26
• Changed footnote of Figure 31 ............................................................................................................................................ 27
• Changed footnote of Figure 32 ............................................................................................................................................ 28
• Changed footnote of Figure 33 ............................................................................................................................................ 29
• Changed footnote of Figure 34 ............................................................................................................................................ 30
• Changed footnote of Figure 35 ............................................................................................................................................ 31
• Changed footnote of Figure 36 ............................................................................................................................................ 32
• Changed footnote of Figure 38 ............................................................................................................................................ 34
• Changed footnote of Figure 40 ............................................................................................................................................ 36
• Changed 1FFh to 3FFh in bits 9-0 description of REFDAC1 Control Register and REFDAC2 Control Register................ 37
2
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Copyright © 2010–2017, Texas Instruments Incorporated
Product Folder Links: ADS8363 ADS7263 ADS7223



Part Number ADS7263
Description Analog-to-Digital Converter
Maker etcTI
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