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ADS131A02 Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza ADS131A02
Descripción Electrónicos  2- or 4-Channel, 24-Bit, Analog Front-Ends for Power Monitoring, Control, and Protection
Download  85 Pages
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

ADS131A02 Datasheet(HTML) 1 Page - Texas Instruments

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SCLK
DOUT
DIN
Control and
Serial Interface
GND
AVSS
DRDY
AVDD
VNCP
XTAL1/CLKIN
CS
Negative
Charge
Pump
Voltage
Reference
Reference
Mux
REFEXT
IOVDD
CLK/XTAL
XTAL2
M[2:0]
RESET
DONE
'6 ADC
'6 ADC
'6 ADC
'6 ADC
AIN4N
AIN4P
AIN3N
AIN3P
AIN2N
AIN2P
AIN1N
AIN1P
REFN
REFP
Out-of-Range
Detect
Data Integrity
Watchdog
Timer
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
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.
ADS131A02, ADS131A04
SBAS590A – MARCH 2016 – REVISED MARCH 2016
ADS131A0x 2- or 4-Channel, 24-Bit, Analog Front-Ends for
Power Monitoring, Control, and Protection
1
1 Features
1
2 or 4 Simultaneously-Sampling Differential Inputs
Data Rates Up to 128 kSPS
Noise Performance:
Single-Channel Accuracy: Better Than 0.1% at
10,000:1 Dynamic Range
ENOB: 19.1 Bits at 8 kSPS
THD: –100 dB at 50 Hz and 60 Hz
Integrated Negative Charge Pump
Flexible Analog Power-Supply Operation:
Using Negative Charge Pump: 3.0 V to 3.45 V
Unipolar Supply: 3.3 V to 5.5 V
Bipolar Supply: ±2.5 V
Digital Supply: 1.65 V to 3.6 V
Low-Drift Internal Voltage Reference: 4 ppm/°C
ADC Self Checks
Cyclic Redundancy Check (CRC) and Hamming
Code Error Correction on Communications
Multiple SPI™ Data Interface Modes:
Asynchronous Interrupt
Synchronous Master and Slave
Package: 32-Pin TQFP
Operating Temperature Range:
–40°C to +125°C
2 Applications
Industrial Power Applications
Single-Phase and Polyphase Energy Monitoring
Protection Relays, Circuit Breakers
Power Quality Meters
Data Acquisition Systems
3 Description
The ADS131A02 and ADS131A04 are two- and four-
channel, simultaneously-sampling, 24-bit, delta-sigma
(
ΔΣ), analog-to-digital converters (ADCs). The wide
dynamic range, scalable data rates, and internal fault
monitors make the ADS131A02 and ADS131A04
ideally-suited for energy monitoring, protection, and
control
applications.
The
ADC
inputs
can
be
independently and directly interfaced to a resistor-
divider network, a transformer to measure voltage or
current, or a Rogowski coil to measure current.
Flexible power-supply options, including an internal
negative charge pump, are available to maximize the
effective number of bits (ENOB) for high dynamic
range applications.
Asynchronous and synchronous master and slave
interface
options
are
available,
providing
ADC
configuration flexibility when chaining multiple devices
in a single system. Several interface checks, ADC
startup checks, and data integrity checks can be
enabled on the interface to report errors in the ADC
and during data transfer.
The ADS131A02 and ADS131A04 support data rates
up to 128 kSPS. The complete analog front-end
(AFE) solutions are packaged in a 32-pin TQFP
package
and
are
specified
over
the
industrial
temperature range of –40°C to +125°C.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ADS131A0x
TQFP (32)
5.00 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Block Diagram


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