Texas Instruments ADS8556 Handleiding
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SARADC
String
DAC
2.5V/3V
REF
BUSY/INT
RANGE/XCLK
HW/SW
REF/WR
RESET
EN
STBY
CS
RD
/
DB[15:0]
WORD/BYTE
PAR/SER
FS
CH_A0
CONVST_A
AGND
REFC_A
REF_IO
AVDDBVDD
BGND
AGND
HVDDHVSS
Control
Logic
Config
Register
I/O
SARADC
CH_A1
AGND
SARADC
CH_B0
CONVST_B
AGND
REFC_B
SARADC
CH_B1
AGND
SARADC
CH_C0
CONVST_C
AGND
REFC_C
SARADC
CH_C1
AGND
Clock
Generator
94
92
90
88
86
84
82
80
78
76
74
72
70
Signal-to-Noise Ratio (dB)
-40-25-1052035
50
65125
Temperature (°C)
8095110
ADS8556
ADS8558
ADS8557
Product
Folder
Sample &
Buy
Technical
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Tools &
Software
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Community
AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,
intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.
ADS8556
,
ADS8557
,
ADS8558
SBAS404D–OCTOBER2006–REVISEDFEBRUARY2016
ADS855x
16-,14-,12-Bit,Six-Channel,SimultaneousSamplingAnalog-to-DigitalConverters
1
1Features
1
•Familyof16-,14-,12-Bit,Pin-and
Software-CompatibleADCs
•SixSARADCsGroupedinThreePairs
•MaximumDataRatePerChannelwithInternal
ConversionClockandReference:
ADS8556:630kSPS(PAR)or450kSPS(SER)
ADS8557:670kSPS(PAR)or470kSPS(SER)
ADS8558:730kSPS(PAR)or500kSPS(SER)
•MaximumDataRatewithExternalConversion
ClockandReference:
800kSPS(PAR)or530kSPS(SER)
•Pin-SelectableorProgrammableInputVoltage
Ranges:Upto±12V
•ExcellentSignal-to-NoisePerformance:
ADS8556:91.5dB,ADS8667:85dB,
ADS8668:73.9dB
•ProgrammableandBufferedInternalReference:
0.5Vto2.5Vand0.5Vto3.0V
•ComprehensivePower-DownModes:
–DeepPower-Down(StandbyMode)
–PartialPower-Down
–Auto-NapPower-Down
•SelectableParallelorSerialInterface
•OperatingTemperatureRange:–40°Cto125°C
BlockDiagram
2Applications
•PowerQualityMeasurement
•ProtectionRelays
•Multi-AxisMotorControl
•ProgrammableLogicControllers
•IndustrialDataAcquisition
3Description
TheADS855xcontainssixlow-power,16-,14-,or12-
bit,successiveapproximationregister(SAR)based
analog-to-digitalconverters(ADCs)withtruebipolar
inputs.Eachchannelcontainsasample-and-hold
circuitthatallowssimultaneoushigh-speedmulti-
channelsignalacquisition.
TheADS855xsupportsdataratesofupto730kSPS
inparallelinterfacemodeorupto500kSPSifthe
serialinterfaceisused.Thebuswidthoftheparallel
interfacecanbesettoeightor16bits.Inserial
mode,uptothreeoutputchannelscanbeactivated.
TheADS855xisspecifiedoverthefullindustrial
temperaturerangeof–40°Cto125°Candisavailable
inanLQFP-64package.
DeviceInformation
(1)
PARTNUMBERPACKAGEBODYSIZE(NOM)
ADS8556
LQFP(64)10.00mm×10.00mmADS8557
ADS8558
(1)Forallavailablepackages,seetheorderableaddendumat
theendofthedatasheet.
SNRvsTemperature
2
ADS8556
,
ADS8557
,
ADS8558
SBAS404D–OCTOBER2006–REVISEDFEBRUARY2016
www.ti.com
ProductFolderLinks:ADS8556ADS8557ADS8558
SubmitDocumentationFeedbackCopyright©2006–2016,TexasInstrumentsIncorporated
TableofContents
1Features..................................................................1
2Applications...........................................................1
3Description.............................................................1
4RevisionHistory.....................................................2
5PinConfigurationandFunctions.........................3
6Specifications.........................................................7
6.1AbsoluteMaximumRatings.....................................7
6.2ESDRatings..............................................................7
6.3RecommendedOperatingConditions.......................8
6.4ThermalInformation..................................................8
6.5ElectricalCharacteristics:General............................8
6.6ElectricalCharacteristics:ADS8556.......................11
6.7ElectricalCharacteristics:ADS8557.......................12
6.8ElectricalCharacteristics:ADS8558.......................13
6.9PowerDissipationCharacteristics..........................13
6.10SerialInterfaceTimingRequirements..................14
6.11ParallelInterfaceTimingRequirements(Read
Access)...................................................................14
6.12ParallelInterfaceTimingRequirements(Write
Access)...................................................................15
6.13TypicalCharacteristics..........................................17
7DetailedDescription............................................23
7.1Overview.................................................................23
7.2FunctionalBlockDiagram.......................................23
7.3FeatureDescription.................................................24
7.4DeviceFunctionalModes........................................28
7.5RegisterMaps.........................................................32
8ApplicationandImplementation........................35
8.1ApplicationInformation............................................35
8.2TypicalApplication..................................................35
9PowerSupplyRecommendations......................39
10Layout...................................................................39
10.1LayoutGuidelines.................................................39
10.2LayoutExample....................................................40
11DeviceandDocumentationSupport.................41
11.1DocumentationSupport.......................................41
11.2RelatedLinks........................................................41
11.3CommunityResources..........................................41
11.4Trademarks...........................................................41
11.5ElectrostaticDischargeCaution............................41
11.6Glossary................................................................41
12Mechanical,Packaging,andOrderable
Information...........................................................41
4RevisionHistory
NOTE:Pagenumbersforpreviousrevisionsmaydifferfrompagenumbersinthecurrentversion.
ChangesfromRevisionC(November2015)toRevisionDPage
•MovedElectricalCharacteristics:GeneraltabletobeforeotherElectricalCharacteristicstables.........................................8
•AddedtextreferenceforFigure42......................................................................................................................................32
•ChangedFigure43:changedcapacitorvaluesfrom820nFto820pF...............................................................................36
ChangesfromRevisionB(January2012)toRevisionCPage
•AddedESDRatingstable,FeatureDescriptionsection,DeviceFunctionalModes,ApplicationandImplementation
section,PowerSupplyRecommendationssection,Layoutsection,DeviceandDocumentationSupportsection,and
Mechanical,Packaging,andOrderableInformationsection.................................................................................................1
ChangesfromRevisionA(August2009)toRevisionBPage
•Changedunitcolumnforallt
CONV
rowsintheSerialInterfaceTimingRequirementstable.................................................14
•Addedt
S3
rowtoSerialInterfaceTimingRequirementstable..............................................................................................14
•Changedunitcolumnforallt
CONV
rowsinParallelInterfaceTimingRequirements(ReadAccess)table...........................14
•UpdatedFigure2..................................................................................................................................................................15
•UpdatedFigure3..................................................................................................................................................................16
•ChangedsecondparagraphofCONVST_xsection.............................................................................................................25
•ChangedminimumbandwidthvalueinlastsentenceofReferencesection........................................................................26
•UpdatedFigure38................................................................................................................................................................29
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
CH_C1
AVDD
AVDD
CH_C0
AGND
AGND
CH_B1
AVDD
AVDD
CH_B0
AGND
AGND
CH_A1
AVDD
AVDD
CH_A0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
DB14/REFBUF
EN
DB13/SDI
DB12
DB11
DB10/SDO_C
DB9/SDO_B
DB8/SDO_A
BGND
BVDD
DB7/HB/DC
ENEN
DB6/SCLK
DB5/DCIN_A
DB4/DCIN_B
DB3/DCIN_C
DB2/SEL_C
DB1/SEL_B
DB15
DB0/SEL_A
REF/WR
EN
BUSY/INT
HW/SW
CSFS/
PAR/SER
RD
AVDD
CONVST_C
AGND
CONVST_B
REFC_C
CONVST_A
AGND
STBY
REFC_B
AGND
AGND
AVDD
REFC_A
RANGE/XCLK
AGND
RESET
AGND
WORD/BYTE
REFIO
HVSS
AVDD
HVDD
AGND
AGND
64636261605958
57
56
5554
17
181920
2122
23
24
2526
27
5352515049
2829303132
ADS8556
ADS8557
ADS8558
3
ADS8556
,
ADS8557
,
ADS8558
www.ti.com
SBAS404D–OCTOBER2006–REVISEDFEBRUARY2016
ProductFolderLinks:ADS8556ADS8557ADS8558
SubmitDocumentationFeedbackCopyright©2006–2016,TexasInstrumentsIncorporated
5PinConfigurationandFunctions
PMPackage
64-PinLQFP
TopView
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | ADS8556 |
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