- 您现在的位置：买卖IC网 > PDF目录179917 > LTC1403ACMSE-1#TRPBF (LINEAR TECHNOLOGY CORP) Serial 12-Bit, 2.8Msps Sampling ADCs with Shutdown; Package: MSOP; No of Pins: 10; Temperature Range: 0°C to +70°C PDF资料下载
参数资料
| 型号： | LTC1403ACMSE-1#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | ADC |
| 英文描述： | Serial 12-Bit, 2.8Msps Sampling ADCs with Shutdown; Package: MSOP; No of Pins: 10; Temperature Range: 0°C to +70°C |
| 中文描述： | 1-CH 14-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PDSO10 |
| 封装： | LEAD FREE, PLASTIC, MSOP-10 |
| 文件页数： | 4/22页 |
| 文件大小： | 575K |
| 代理商： | LTC1403ACMSE-1#TRPBF |
LTC1403-1/LTC1403A-1
14031fb
applications inFormation
INPUT FILTERING AND SOURCE IMPEDANCE
Thenoiseandthedistortionoftheinputamplifierand
othercircuitrymustbeconsideredsincetheywilladd
totheLTC1403-1/LTC1403A-1noiseanddistortion.The
small-signalbandwidthofthesample-and-holdcircuitis
50MHz.Anynoiseordistortionproductsthatarepres-
entattheanaloginputswillbesummedoverthisentire
bandwidth.Noisyinputcircuitryshouldbefilteredprior
totheanaloginputstominimizenoise.Asimple1-pole
RCfilterissufficientformanyapplications.Forexample,
Figure1showsa47pFcapacitorfromAIN+togroundanda
51Ωsourceresistortolimittheinputbandwidthto47MHz.
The47pFcapacitoralsoactsasachargereservoirforthe
inputsample-and-holdandisolatestheADCinputfrom
sampling-glitchsensitivecircuitry.Highqualitycapacitors
andresistorsshouldbeusedsincethesecomponents
can add distortion. NPO and silvermica type dielectric
capacitorshaveexcellentlinearity.Carbonsurfacemount
resistorscangeneratedistortionfromselfheatingand
fromdamagethatmayoccurduringsoldering.Metalfilm
surfacemountresistorsaremuchlesssusceptibletoboth
problems.Whenhighamplitudeunwantedsignalsareclose
infrequencytothedesiredsignalfrequency,amultiple
polefilterisrequired.Highexternalsourceresistance,
combinedwiththe13pFofinputcapacitance,willreduce
therated50MHzbandwidthandincreaseacquisitiontime
beyond39ns.
Figure 1. RC Input Filter
±1.25VrangeisalsoideallysuitedforAC-coupledsignals
insinglesupplyapplications.Figure2showshowtoAC
couplesignalsinasinglesupplysystemwithoutneeding
amid-supply1.5Vexternalreference.TheDCcommon
modelevelissuppliedbythepreviousstagethatisalready
boundedbythesinglesupplyvoltageofthesystem.The
commonmoderangeoftheinputsextendfromground
tothesupplyvoltageVDD.Ifthedifferencebetweenthe
AIN+andAIN–inputsexceeds1.25V,theoutputcodewill
stayfixedatzeroandallonesandifthisdifferencegoes
below–1.25V,theoutputcodewillstayfixedatoneand
allzeros.
10F
VCM
1.5V DC
11
3
AIN–
LTC1403-1/
LTC1403A-1
AIN+
47pF
2
1
51
GND
VREF
1403A F01
+
AIN+
C4
10F
14031 F02
R2
1.6k
C2
1F
C1
1F
C1, C2: FILM TYPE
C3: COG TYPE
C4: CERAMIC BYPASS
R1
1.6k
1
2
3
LTC1403-1/
LTC1403A-1
AIN–
VREF
R3
51
C3
56pF
VIN
Figure 2. AC Coupling of AC Signals with 1kHz Low Cut
INPUT RANGE
TheanaloginputsoftheLTC1403-1/LTC1403A-1maybe
drivenfullydifferentiallywithasinglesupply.Eachinput
may swing up to 3VP-Pindividually.Intheconversion
range,eachinputisalwaysupto1.25Vmorepositiveor
morenegativethantheinvertinginputofeachchannel.The
INTERNAL REFERENCE
TheLTC1403-1/LTC1403A-1hasanon-chip,temperature
compensated,bandgapreferencethatisfactorytrimmed
near 2.5V to obtain ±1.25V input span. The reference
amplifier output VREF, (Pin 3) must be bypassed with
acapacitortoground.Thereferenceamplifierisstable
withcapacitorsof1Forgreater.Forthebestnoiseper-
formance,a10Fceramicora10Ftantaluminparallel
witha0.1Fceramicisrecommended.TheVREFpincan
be overdriven with an external reference as shown in
Figure3.Thevoltageoftheexternalreferencemustbe
higherthanthe2.5VoftheclassApull-upoutputofthe
Figure 3
GND
LTC1403-1/
LTC1403A-1
VREF
10F
11
3
3VREF
14031 F03
相关PDF资料 |
PDF描述 |
|---|---|
| LTC1403AIMSE-1#PBF | Serial 12-Bit, 2.8Msps Sampling ADCs with Shutdown; Package: MSOP; No of Pins: 10; Temperature Range: -40°C to +85°C |
| LTC1403AIMSE-1#TRPBF | Serial 12-Bit, 2.8Msps Sampling ADCs with Shutdown; Package: MSOP; No of Pins: 10; Temperature Range: -40°C to +85°C |
| LTC1403CMSE-1#PBF | Serial 12-Bit, 2.8Msps Sampling ADCs with Shutdown; Package: MSOP; No of Pins: 10; Temperature Range: 0°C to +70°C |
| LTC1403CMSE-1#TRPBF | Serial 12-Bit, 2.8Msps Sampling ADCs with Shutdown; Package: MSOP; No of Pins: 10; Temperature Range: 0°C to +70°C |
| LTC1403IMSE-1#PBF | Serial 12-Bit, 2.8Msps Sampling ADCs with Shutdown; Package: MSOP; No of Pins: 10; Temperature Range: -40°C to +85°C |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1403ACMSEPBF | 制造商:Linear Technology 功能描述:ADC,LTC1403A 14bit 2.8MSPS SPI MSOP |
| LTC1403AHMSE | 制造商:Linear Technology 功能描述:ADC Single SAR 2.8Msps 14-bit Serial 10-Pin MSOP EP |
| LTC1403AHMSE#PBF | 功能描述:IC ADC 14BIT 2.8MSPS DIFF 10MSOP 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:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 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-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| LTC1403AHMSE#TRPBF | 功能描述:IC ADC 14BIT 2.8MSPS DIFF 10MSOP 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:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 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-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| LTC1403AIMSE | 功能描述:IC ADC 14BIT 2.8MSPS DIFF 10MSOP RoHS:否 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:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 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-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
发布紧急采购，3分钟左右您将得到回复。