Texas Instruments ADS7949 Handleiding
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MUX
AIN0P
AIN0N
AIN1P
AIN1N
ADC
CH SELAVDDREF
GNDREFGND
DVDD
CS
SCLK
SDO
PDEN
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AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,
intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.
ADS7947
,
ADS7948
,
ADS7949
SLAS708A–SEPTEMBER2010–REVISEDSEPTEMBER2019
ADS794xUltra-LowPower,12-,10-,and8-Bit,Dual-Channel,SARADCs
1
1Features
1
•Samplerate:2MSPS
•Pin-compatiblefamily:12-,10-,8-bit
•Highresolution,highthroughput:
–ADS7947:12bit,2.1MSPS
–ADS7948:10bit,2.57MSPS
–ADS7949:8bit,3MSPS
•Excellentperformance:
–Nomissingcodes
–INL:1LSB(max)
–SNR:72dB(min)
•Lowpower:
–7.5mWat2-MSPSoperation
–Autopower-downatlowerspeeds:
–3.8mWat500kSPS
–0.8mWat100kSPS
–0.16mWat20kSPS
•Widesupplyrange:
–Analog:2.7Vto5.5V
–Digital:1.65VtoAVDD
•SPI-compatibleserialinterface
•Extendedtemperaturerange:–40°Cto+125°C
•Tinyfootprint:3-mm×3-mmWQFN
2Applications
•Communicationsystems
•Opticalnetworking
•Medicalinstrumentation
•Battery-poweredequipment
•Dataacquisitionsystems
3Description
TheADS7947,ADS7948,andADS7949arepin-
compatible12-bit,10-bit,and8-bit,2-MSPS,analog-
to-digitalconverters(ADCs),respectively.The
devicesoperateata2-MSPSsampleratewitha
standard16clockdataframe.Inaddition,the
ADS7947(12-bit)canbeoperatedat2.1MSPS,the
ADS7948(10-bit)at2.57MSPS,andtheADS7949
(8-bit)at3MSPSwithashortdataframeoptimized
forthenumberofclockssufficientforconversionwith
nodropinperformance.Thedevicesfeatureboth
outstandingdcprecisionandexcellentdynamic
performance.Thisfamilyofpin-compatibledevices
includesatwo-channelinputmultiplexerandalow-
powersuccessiveapproximationregister(SAR)ADC.
TheADS7947,ADS7948,andADS7949supporta
wideanalogsupplyrangethatsupportsthefull-scale
inputrangeupto5V.AsimpleSPIdigitalinterface,
withadigitalsupplythatcanoperateaslowas1.65
V,allowsforeasyinterfacingtoawidevarietyof
digitalcontrollers.Automaticpower-downcanbe
enabledwhenoperatingatslowerspeedsto
dramaticallyreducepowerconsumption.
Offeredinatiny3-mm×3-mmWQFNpackage,the
ADS7947,ADS7948,andADS7949arefully
specifiedovertheextendedtemperaturerangeof
–40°Cto+125°Candaresuitableforawidevariety
ofdataacquisitionapplicationswherehigh
performance,lowpower,andsmallsizearekey.
DeviceInformation
(1)
PARTNUMBERPACKAGEBODYSIZE(NOM)
ADS794xWQFN(16)3.00mm×3.00mm
(1)Forallavailablepackages,seetheorderableaddendumat
theendofthedatasheet.
ADS794xBlockDiagram
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | ADS7949 |
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