参数资料
型号: LTC2309CUF#TRPBF
厂商: Linear Technology
文件页数: 6/26页
文件大小: 0K
描述: IC ADC 12BIT SAR 24-QFN
标准包装: 2,500
位数: 12
采样率(每秒): 14k
数据接口: I²C,串行
转换器数目: 1
功率耗散(最大): 15mW
电压电源: 单电源
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 24-WFQFN 裸露焊盘
供应商设备封装: 24-QFN 裸露焊盘(4x4)
包装: 带卷 (TR)
输入数目和类型: 8 个单端,单极;8 个单端,双极;4 个差分,单极;4 个差分,双极
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
相关PDF资料
PDF描述
D38999/20FC98SALC CONN HSG RCPT 10POS WALL MT SCKT
LTC2308CUF#TRPBF IC ADC 12BIT 500KSPS 24-QFN
D38999/20FC98BA CONN HSG RCPT 10POS WALL MT SCKT
MS27468T17F99SLC CONN HSG RCPT 23POS JAMNUT SCKT
D38999/20JG41SNLC CONN HSG RCPT 41POS WALL MT SCKT
相关代理商/技术参数
参数描述
LTC2309HF#PBF 功能描述:IC ADC 12BIT SAR 20-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率(每秒):1M 数据接口:串行,SPI? 转换器数目:1 功率耗散(最大):- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘(4x4) 包装:Digi-Reel® 输入数目和类型:8 个单端,单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6
LTC2309HF#TRPBF 功能描述:IC ADC 12BIT SAR 20-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率(每秒):45k 数据接口:串行 转换器数目:2 功率耗散(最大):315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC(0.295",7.50mm 宽) 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端,单极
LTC2309IF#PBF 功能描述:IC ADC 12BIT SAR 20-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率(每秒):45k 数据接口:串行 转换器数目:2 功率耗散(最大):315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC(0.295",7.50mm 宽) 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端,单极
LTC2309IF#TRPBF 功能描述:IC ADC 12BIT SAR 20-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率(每秒):45k 数据接口:串行 转换器数目:2 功率耗散(最大):315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC(0.295",7.50mm 宽) 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端,单极
LTC2309IUF#PBF 功能描述:IC ADC 12BIT SAR 24-QFN RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率(每秒):1M 数据接口:串行,SPI? 转换器数目:1 功率耗散(最大):- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘(4x4) 包装:Digi-Reel® 输入数目和类型:8 个单端,单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6