參數(shù)資料
型號： LTC2309IUF#PBF
廠商： Linear Technology
文件頁數(shù)： 1/26頁
文件大?。?/td> 0K
描述： IC ADC 12BIT SAR 24-QFN
標準包裝： 91
位數(shù)： 12
采樣率（每秒）： 14k
數(shù)據(jù)接口： I²C，串行
轉(zhuǎn)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 ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 24-WFQFN 裸露焊盤
供應商設備封裝： 24-QFN 裸露焊盤（4x4）
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
產(chǎn)品目錄頁面： 1349 (CN2011-ZH PDF)
配用： DC1337A-ND - BOARD SAR ADC LTC2309
LTC2309
2309fd
BLOCK DIAGRAM
FeAtuRes
AppLICAtIOns
DesCRIptIOn
8-Channel, 12-Bit SAR ADC
with I2C Interface
n
IndustrialProcessControl
n
MotorControl
n
AccelerometerMeasurements
n
Battery-OperatedInstruments
n
Isolatedand/orRemoteDataAcquisition
n
PowerSupplyMonitoring
Integral Nonlinearity
vs Output Code
n
12-Bit Resolution
n
Low Power: 1.5mW at 1ksps, 35W Sleep Mode
n
14ksps Throughput Rate
n
Low Noise: SNR = 73.4dB
n
GuaranteedNoMissingCodes
n
Single5VSupply
n
2-WireI2CCompatibleSerialInterfacewithNine
AddressesPlusOneGlobalforSynchronization
n
FastConversionTime:1.3s
n
InternalReference
n
Internal8-ChannelMultiplexer
n
InternalConversionClock
n
UnipolarorBipolarInputRanges(SoftwareSelectable)
n
GuaranteedOperationfrom–40°Cto125°C
(TSSOPPackage)
n
24-Pin4mm
×4mmQFNand20-PinTSSOPPackages
TheLTC2309isalownoise,lowpower,8-channel,12-bit
successiveapproximationADCwithanI2Ccompatible
serialinterface.ThisADCincludesaninternalreference
andafullydifferentialsample-and-holdcircuittoreduce
common mode noise. The LTC2309 operates from an
internalclocktoachieveafast1.3sconversiontime.
The LTC2309 operates from a single 5V supply and
draws just 300A at a throughput rate of 1ksps. The
ADCentersnapmodewhennotconverting,reducing
thepowerdissipation.
TheLTC2309isavailableinbothasmall24-pin4mm
×
4mmQFNanda20-pinTSSOPpackage.Theinternal2.5V
referenceand8-channelmultiplexerfurtherreducePCB
boardspacerequirements.
The low power consumption and small size make the
LTC2309idealforbattery-operatedandportableapplica-
tions,whilethe2-wireI2Ccompatibleserialinterfacemakes
thisADCagoodmatchforspace-constrainedsystems.
L
,LT,LTC,LTM,LinearTechnologyandtheLinearlogoareregisteredtrademarksand
EasyDriveisatrademarkofLinearTechnologyCorporation.Allothertrademarksarethe
propertyoftheirrespectiveowners.
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
2309 TA01
I2C
PORT
ANALOG
INPUT
MUX
ANALOG INPUTS
0V TO 4.096V UNIPOLAR
±2.048V BIPOLAR
REFCOMP
INTERNAL
2.5V REF
VDD
5V
GND
LTC2309
0.1F
12-BIT
SAR ADC
+
–
2.2F
10F
0.1F
10F
VREF
SDA
SCL
AD1
AD0
OUTPUT CODE
0
INL
(LSB)
0
0.25
0.50
4096
2309 G01
–0.25
–0.50
–1.00
1024
2048
3072
–0.75
1.00
0.75
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