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| 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： | 8/22页 |
| 文件大小： | 575K |
| 代理商： | LTC1403ACMSE-1#TRPBF |
LTC1403-1/LTC1403A-1
14031fb
applications inFormation
theclocktolatchdatafromtheSerialDataOutput(SDO)
into your processor serial port. The 14-bit Serial Data
willbereceivedrightjustified,ina16-bitwordwith16or
moreclocksperframesync.Itisgoodpracticetodrive
theLTC1403-1/LTC1403A-1SCKinputfirsttoavoiddigi-
talnoiseinterferenceduringtheinternalbitcomparison
decisionbytheinternalhighspeedcomparator.Unlikethe
CONVinput,theSCKinputisnotsensitivetojitterbecause
theinputsignalisalreadysampledandheldconstant.
Serial Data Output (SDO)
Uponpower-up,theSDOoutputisautomaticallyresetto
thehighimpedancestate.TheSDOoutputremainsinhigh
impedanceuntilanewconversionisstarted.SDOsends
out12/14bitsin2’scomplementformatintheoutputdata
streambeginningatthethirdrisingedgeofSCKafterthe
risingedgeofCONV.SDOisalwaysinhighimpedance
modewhenitisnotsendingoutdatabits.Pleasenote
thedelayspecificationfromSCKtoavalidSDO.SDOis
alwaysguaranteedtobevalidbythenextrisingedgeof
SCK.The16-bitoutputdatastreamiscompatiblewiththe
16-bitor32-bitserialportofmostprocessors.
HARDWARE INTERFACE TO TMS320C54x
TheLTC1403-1/LTC1403A-1isaserialoutputADCwhose
interface has been designed for high speed buffered
serial ports in fast digital signal processors (DSPs).
Figure 8 shows an example of this interface using a
TMS320C54X.
ThebufferedserialportintheTMS320C54xhasdirect
accesstoa2kBsegmentofmemory.TheADC’sserial
datacanbecollectedintwoalternating1kBsegments,
inrealtime,atthefull2.8Mspsconversionrateofthe
LTC1403-1/LTC1403A-1. The DSP assembly code sets
framesyncmodeattheBFSRpintoacceptanexternal
positivegoingpulseandtheserialclockattheBCLKRpin
toacceptanexternalpositiveedgeclock.Buffersnear
theLTC1403-1/LTC1403A-1maybeaddedtodrivelong
trackstotheDSPtopreventcorruptionofthesignalto
LTC1403-1/LTC1403A-1.Thisconfigurationisadequateto
traverseatypicalsystemboard,butsourceresistorsatthe
bufferoutputsandterminationresistorsattheDSP,may
beneededtomatchthecharacteristicimpedanceofvery
longtransmissionlines.IfyouneedtoterminatetheSDO
transmissionline,bufferitfirstwithoneortwo74ACTxx
gates.TheTTLthresholdinputsoftheDSPportrespond
properlytothe3VswingfromtheSDOpin.
Figure 8. DSP Serial Interface to TMS320C54x
14031 F08
7
10
9
8
6
3-WIRE SERIAL
INTERFACELINK
VDD
CONV
SCK
LTC1403-1/
LTC1403A-1
SDO
VCC
BFSR
BCLKR
TMS320C54x
BDR
GND
CONV
0V TO 3V LOGIC SWING
CLK
3V
5V
B13
B12
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 |
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