參數(shù)資料
型號: LTC2309HF#TRPBF
廠商: Linear Technology
文件頁數(shù): 25/26頁
文件大?。?/td> 0K
描述: IC ADC 12BIT SAR 20-TSSOP
標準包裝: 2,500
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 ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 20-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 20-TSSOP
包裝: 帶卷 (TR)
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
pIn FunCtIOns
REFCOMP (Pin 1):ReferenceBufferOutput.Bypass
to GND with 10F and 0.1F ceramic capacitors in
parallel.Nominaloutputvoltageis4.096V.Theinternal
referencebufferdrivingthispinisdisabledbyground-
ingVREF,allowingREFCOMPtobeoverdrivenbyan
externalsource.
GND (Pins 2, 8 , 9):Ground.AllGNDpinsmustbe
connectedtoasolidgroundplane.
VDD (Pins 3, 10):5VSupply.TherangeofVDDis4.75V
to5.25V.BypassVDDtoGNDwitha10Fceramicca-
pacitorinparallelwithtwo0.1Fceramiccapacitors,
onelocatedascloseaspossibletoeachpin.
AD0 (Pin 4):ChipAddressControlPin.Thispiniscon-
figuredasathree-state(LOW,HIGH,floating)address
controlbitforthedeviceI2Caddress.SeeTable2for
addressselection.
AD1 (Pin 5): Chip Address Control Pin. This pin is
configured as a three-state (LOW, HIGH, floating)
address control bit for the device I2C address. See
Table2foraddressselection.
SCL (Pin 6):SerialClockPinoftheI2CInterface.The
LTC2309canonlyactasaslaveandtheSCLpinonly
acceptsanexternalserialclock.Dataisshiftedinto
theSDApinontherisingedgesoftheSCLclockand
outputthroughtheSDApinonthefallingedgesofthe
SCLclock.
SDA (Pin 7):BidirectionalSerialDataLineoftheI2C
Interface.Intransmittermode(read),theconversion
resultisoutputattheSDApin,whileinreceivermode
(write),theDINwordisinputattheSDApintocon-
figuretheADC.Thepinishighimpedanceduringthe
datainputmodeandisanopen-drainoutput(requires
anappropriatepull-updevicetoVDD)duringthedata
outputmode.
CH0-CH7 (Pins 11-18):Channel0toChannel7Analog
Inputs.CH0-CH7canbeconfiguredassingle-ended
or differential input channels. See the Analog Input
Multiplexersection.
COM (Pin 19):CommonInput.Thisisthereference
point for all single-ended inputs. It must be free of
noiseandshouldbeconnectedtogroundforunipolar
conversionsandmidwaybetweenGNDandREFCOMP
forbipolarconversions.
VREF (Pin 20):2.5VReferenceOutput.BypasstoGND
withaminimum2.2Fceramiccapacitor.Theinternal
referencemaybeoverdrivenbyanexternal2.5Vrefer-
enceatthispin.
(TSSOP)
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