ADS8363
ADS7263
ADS7223
www.ti.com
SBAS523B –OCTOBER 2010–REVISED JANUARY 2011
Dual, 1MSPS, 16-/14-/12-Bit, 4×2 or 2×2 Channel, Simultaneous Sampling
Analog-to-Digital Converter
Check for Samples: ADS8363, ADS7263, ADS7223
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FEATURES
DESCRIPTION
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•
•
•
Eight Pseudo- or Four Fully-Differential Inputs
The ADS8363 is
a
dual, 16-bit, 1MSPS
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 while the ADS7223
is a 12-bit version of the ADS8363.
Simultaneous Sampling of Two Channels
Excellent AC Performance:
–
SNR:
93dB (ADS8363)
85dB (ADS7263)
73dB (ADS7223)
–
THD:
–98dB (ADS8363)
–92dB (ADS7263)
–86dB (ADS7223)
The ADS8363/7263/7223 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.
•
Dual Programmable and Buffered 2.5V
Reference Allows:
–
–
Two Different Input Voltage Range Settings
Two-Level PGA Implementation
All devices are offered in a 5x5mm QFN-32 package.
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•
Programmable Auto-Sequencer
Integrated Data Storage (up to 4 per channel)
for Oversampling Applications
Functional Block Diagram
AVDD
DVDD
•
•
2-Bit Counter for Safety Applications
Fully Specified over the Extended Industrial
Temperature Range
CHA1P/CHA3
CHA1N/CHA2
CHA0P/CHA1
CHA0N/CHA0
CMA
Input
Mux
CS
SAR ADC
CLOCK
BUSY
SDI
Serial
Interface
and
APPLICATIONS
REF1
REF2
•
Motor Control: Current and Position
Measurement including Safety Applications
RD
FIFO
CHB1P/CHB3
CHB1N/CHB2
CHB0P/CHB1
CHB0N/CHB0
CMB
SDOA
SDOB
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•
•
•
•
Power Quality Measurement
Three-Phase Power Control
Programmable Logic Controllers
Industrial Automation
Input
Mux
SAR ADC
REF1
M0
2.5V
REF
Control
Logic
String
DAC
REFIO1
REFIO2
Protection Relays
M1
CONVST
REF2
String
DAC
RGND
AGND
DGND
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010–2011, Texas Instruments Incorporated