Texas Instruments ADS7886 Handleiding
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SCLK
+IN
VDD
CDAC
SAR
COMPARATOR
OUTPUT
LATCHES
and
DRIVERS
3−STATE
CONVERSION
and
CONTROL
LOGIC
SDO
CS
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AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,
intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.
ADS7886
SLAS492B–SEPTEMBER2005–REVISEDAUGUST2016
ADS788612-Bit,1-MSPS,Micro-Power,Miniature
SARAnalog-to-DigitalConverters
1
1Features
1
•1-MHzSampleRateSerialDevice
•12-BitResolution
•ZeroLatency
•20-MHzSerialInterface
•SupplyRange:2.35Vto5.25V
•TypicalPowerDissipationat1MSPS:
–3.9mWat3-VV
DD
–7.5mWat5-VV
DD
•INL±1.25LSBMaximum,±0.65LSB(Typical)
•DNL±1LSBMaximum,+0.4/–0.65LSB(Typical)
•TypicalACPerformance:
72.25-dBSINAD,–84-dBTHD
•UnipolarInputRange:0VtoV
DD
•PowerDownCurrent:1µA
•WideInputBandwidth:15MHzat3dB
•6-PinSOT-23andSC70Packages
2Applications
•BaseBandConvertersinRadio
Communication
•MotorCurrentandBusVoltageSensorsinDigital
Drives
•OpticalNetworking(DWDM,MEMSBased
Switching)
•OpticalSensors
•Battery-PoweredSystems
•MedicalInstrumentations
•High-SpeedDataAcquisitionSystems
•High-SpeedClosed-LoopSystems
3Description
TheADS7886isa12-bit,1-MSPSanalog-to-digital
converter(ADC).Thedeviceincludesacapacitor
basedSARA/Dconverterwithinherentsampleand
hold.Theserialinterfaceineachdeviceiscontrolled
bytheCSandSCLKsignalsforgluelessconnections
withmicroprocessorsandDSPs.Theinputsignalis
sampledwiththefallingedgeofCS,andSCLKis
usedforconversionandserialdataoutput.
Thedeviceoperatesfromawidesupplyrangefrom
2.35Vto5.25V.Thelowpowerconsumptionofthe
devicemakesitsuitableforbattery-powered
applications.Thedevicealsoincludesapowerdown
featureforpowersavingatlowerconversionspeeds.
Thehighlevelofthedigitalinputtothedeviceisnot
limitedtodeviceV
DD
.Thismeansthedigitalinputcan
goashighas5.25Vwhendevicesupplyis2.35V.
Thisfeatureisusefulwhendigitalsignalsarecoming
fromothercircuitwithdifferentsupplylevels.Alsothis
relaxesrestrictiononpower-upsequencing.
TheADS7886isavailablein6-pinSOT-23andSC70
packagesandisspecifiedforoperationfrom–40°Cto
125°C.
DeviceInformation
(1)
PARTNUMBERPACKAGEBODYSIZE(NOM)
ADS7886
SOT-23(6)2.90mm×1.60mm
SC70(6)2.00mm×1.25mm
(1)Forallavailablepackages,seetheorderableaddendumat
theendofthedatasheet.
BlockDiagram
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | ADS7886 |
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