achieveatypicalconversiontime(t<" />
參數(shù)資料
型號: LTC2309HF#PBF
廠商: Linear Technology
文件頁數(shù): 6/26頁
文件大小: 0K
描述: IC ADC 12BIT SAR 20-TSSOP
標準包裝: 74
位數(shù): 12
采樣率(每秒): 14k
數(shù)據(jù)接口: I²C,串行
轉換器數(shù)目: 1
功率耗散(最大): 15mW
電壓電源: 單電源
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 20-TSSOP(0.173",4.40mm 寬)
供應商設備封裝: 20-TSSOP
包裝: 管件
輸入數(shù)目和類型: 8 個單端,單極;8 個單端,雙極;4 個差分,單極;4 個差分,雙極
配用: DC1337A-ND - BOARD SAR ADC LTC2309
LTC2309
2309fd
Internal Conversion Clock
The internal conversion clock is factory trimmed to
achieveatypicalconversiontime(tCONV)of1.3μsand
a maximum conversion time of 1.8μs over the full
operatingtemperaturerange.
I2C Interface
TheLTC2309communicatesthroughanI2Cinterface.
TheI2Cinterfaceisa2-wireopen-draininterfacesup-
porting multiple devices and multiple masters on a
singlebus.Theconnecteddevicescanonlypullthe
serialdataline(SDA)LOWandcanneverdriveitHIGH.
SDAisrequiredtobeexternallyconnectedtothesup-
plythroughapull-upresistor.Whenthedatalineisnot
beingdrivenLOW,itisHIGH.DataontheI2Cbuscan
betransferredatratesupto100kbits/sinthestandard
modeandupto400kbits/sinthefastmode.TheVDD
powershouldnotberemovedfromtheLTC2309when
theI2CbusisactivetoavoidloadingtheI2Cbuslines
throughtheinternalESDprotectiondiodes.
EachdeviceontheI2Cbusisrecognizedbyaunique
addressstoredinthedeviceandcanonlyoperateeither
asatransmitterorreceiver,dependingonthefunction
ofthedevice.Adevicecanalsobeconsideredasa
masteroraslavewhenperformingdatatransfers.A
masteristhedevicewhichinitiatesadatatransferon
thebusandgeneratestheclocksignalstopermitthe
transfer.Devicesaddressedbythemasterareconsid-
eredslaves.
TheLTC2309canonlybeaddressedasaslave(see
Table2).Onceaddressed,itcanreceiveconfiguration
bits(DINword)ortransmitthelastconversionresult.The
serialclockline(SCL)isalwaysaninputtotheLTC2309
andtheserialdataline(SDA)isbidirectional.Thedevice
supportsthestandardmodeandthefastmodefordata
transferspeedsupto400kbits/s(seetheTimingDiagram
sectionfordefinitionoftheI2Ctiming).
The START and STOP Conditions
ReferringtoFigure7,aSTART(S)conditionisgener-
atedbytransitioningSDAfromHIGHtoLOWwhile
SCLisHIGH.Thebusisconsideredtobebusyafterthe
STARTcondition.Whenthedatatransferisfinished,a
STOP(P)conditionisgeneratedbytransitioningSDA
fromLOWtoHIGHwhileSCLisHIGH.Thebusisfree
afteraSTOPconditionisgenerated.STARTandSTOP
conditionsarealwaysgeneratedbythemaster.
When the bus is in use, it stays busy if a repeated
START(Sr)isgeneratedinsteadofaSTOPcondition.
TherepeatedSTARTtimingisfunctionallyidenticalto
theSTARTandisusedforwritingandreadingfromthe
devicebeforetheinitiationofanewconversion.
AppLICAtIOns InFORMAtIOn
S
START Condition
STOP Condition
P
2309 F07
SDA
SCL
SDA
SCL
Figure 7. Timing Diagrams of START and STOP Conditions
Data Transferring
AftertheSTARTcondition,theI2Cbusisbusyand
datatransfercanbeginbetweenthemasterandthe
addressedslave.Dataistransferredoverthebusin
groups of nine bits, one byte followed by one ac-
knowledge(ACK)bit.ThemasterreleasestheSDA
lineduringtheninthSCLclockcycle.Theslavedevice
canissueanACKbypullingSDALOWorissueaNot
Acknowledge (NACK) by leaving the SDA line high
impedance(theexternalpull-upresistorwillholdthe
linehigh).ChangeofdataonlyoccurswhiletheSCL
lineisLOW.
Data Format
After a START condition, the master sends a 7-bit
addressfollowedbyaread/write(R/W)bit.TheR/W
bitis1forareadrequestand0forawriterequest.
If the 7-bit address matches one of the LTC2309’s
9pin-selectableaddresses,theADCisselected.When
相關PDF資料
PDF描述
VI-2WB-MY-B1 CONVERTER MOD DC/DC 95V 50W
VE-JWH-MY-F1 CONVERTER MOD DC/DC 52V 50W
AD7708BRZ IC ADC 16BIT R-R 8/10CH 28SOIC
VE-JWL-MY-F4 CONVERTER MOD DC/DC 28V 50W
LT1721CS IC COMP R-RINOUT QUAD 16-SOIC
相關代理商/技術參數(shù)
參數(shù)描述
LTC2309IF#PBF 功能描述:IC ADC 12BIT SAR 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率(每秒):45k 數(shù)據(jù)接口:串行 轉換器數(shù)目:2 功率耗散(最大):315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC(0.295",7.50mm 寬) 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端,單極
LTC2309IF#TRPBF 功能描述:IC ADC 12BIT SAR 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率(每秒):45k 數(shù)據(jù)接口:串行 轉換器數(shù)目:2 功率耗散(最大):315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC(0.295",7.50mm 寬) 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端,單極
LTC2309IUF#PBF 功能描述:IC ADC 12BIT SAR 24-QFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝:1 系列:microPOWER™ 位數(shù):8 采樣率(每秒):1M 數(shù)據(jù)接口:串行,SPI? 轉換器數(shù)目:1 功率耗散(最大):- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應商設備封裝:24-VQFN 裸露焊盤(4x4) 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個單端,單極 產(chǎn)品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6
LTC2309IUF#TRPBF 功能描述:IC ADC 12BIT SAR 24-QFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率(每秒):45k 數(shù)據(jù)接口:串行 轉換器數(shù)目:2 功率耗散(最大):315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC(0.295",7.50mm 寬) 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端,單極
LTC2312CTS8-12#TRMPBF 制造商:Linear Technology 功能描述:IC ADC 12BIT 1MSPS TSOT23-8 制造商:Linear Technology 功能描述:ADC, 12BIT, 500KSPS, SPI, TSOT-23-8, Resolution (Bits):12bit, Sampling Rate:500k