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参数资料
| 型号： | LTC2309IUF#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/26页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT SAR 24-QFN |
| 标准包装： | 91 |
| 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： | -40°C ~ 85°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： | 管件 |
| 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 |
| 产品目录页面： | 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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