Texas Instruments ADS131A04 Bedienungsanleitung
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SCLK
DOUT
DIN
Control and
Serial Interface
GND
AVSS
DRDY
AVDD
VNCP
XTAL1/CLKIN
CS
Negative
Charge
Pump
Voltage
Reference
ADS131A04 Only
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
REFNREFP
Out-of-Range
Detect
Data Integrity
Watchdog
Timer
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AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,
intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.
ADS131A02
,
ADS131A04
SBAS590E–MARCH2016–REVISEDJUNE2020
ADS131A0x2-or4-Channel,24-Bit,128-kSPS,Simultaneous-Sampling,Delta-SigmaADC
1
1Features
1
•2or4simultaneous-samplingdifferentialinputs
•Dataratesupto128kSPS
•Highperformance:
–Single-channelaccuracy:betterthan0.1%at
10,000:1dynamicrange
–Effectiveresolution:20.6bitsat8kSPS
–THD:–100dBat50Hzand60Hz
•Integratednegativechargepumpallowsabsolute
inputvoltagesbelowground
•Flexibleanalogpower-supplyoperation:
–Usingnegativechargepump:3.0Vto3.45V
–Unipolarsupply:3.3Vto5.5V
–Bipolarsupply:±2.5V
•Digitalsupply:1.65Vto3.6V
•Low-driftinternalvoltagereference:6ppm/°C
•ADCselfchecks
•Cyclicredundancycheck(CRC)andhamming
codeerrorcorrectiononcommunications
•MultipleSPIdatainterfacemodes:
–Asynchronousinterrupt
–Synchronousmasterandslave
•Package:32-pinTQFP
•Operatingtemperaturerange:
–40°Cto+125°C
2Applications
•Electricitymeters:commercialandresidential
•Circuitbreakers
•Batterytestequipment
•Batterymanagementsystems
•Dataacquisitionsystems
3Description
TheADS131A02andADS131A04devicesaretwo-
andfour-channel,simultaneous-sampling,24-bit,
delta-sigma(ΔΣ),analog-to-digitalconverters(ADCs).
Thewidedynamicrange,withscalabledataratesup
to128kSPS,andinternalfaultmonitorsmakethe
ADS131A02orADS131A04agoodchoicewhen
designingforenergymonitoring,gridprotection,and
controlapplications.TheADCinputscanbe
independentlyanddirectlyinterfacedtoaresistor-
dividernetwork,acurrenttransformer,oraRogowski
coiltomeasurevoltageorcurrent.Flexiblepower-
supplyoptions,includinganinternalnegativecharge
pump,areavailabletomaximizetheeffective
resolutionforhighdynamicrangeapplications.
Asynchronousandsynchronousmasterandslave
interfaceoptionsareavailable,providingADC
configurationflexibilitywhenchainingmultipledevices
inasinglesystem.Severalinterfacechecks,ADC
startupchecks,anddataintegritycheckscanbe
enabledontheinterfacetoreporterrorsintheADC
andduringdatatransfer.
Thecompleteanalogfront-end(AFE)solutionsare
packagedina32-pinTQFPpackageandare
specifiedovertheindustrialtemperaturerangeof
–40°Cto+125°C.
DeviceInformation
(1)
PARTNUMBERPACKAGEBODYSIZE(NOM)
ADS131A0xTQFP(32)5.00mm×5.00mm
(1)Forallavailablepackages,seetheorderableaddendumat
theendofthedatasheet.
SimplifiedBlockDiagram
Produktspezifikationen
| Marke: | Texas Instruments |
| Kategorie: | Nicht kategorisiert |
| Modell: | ADS131A04 |
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