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LTC2450-1

更新时间： 2024-11-11 04:43:43
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
20页 201K
描述
Easy-to-Use, Ultra-Tiny 16-Bit ADC

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LTC2450-1 数据手册

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LTC2450-1  
Easy-to-Use, Ultra-Tiny  
16-Bit ΔΣ ADC  
FEATURES  
DESCRIPTION  
The LTC®2450-1 is a low power, ultra-tiny 16-bit analog-  
to-digital converter designed for space constrained ap-  
plications requiring 16-bit performance. The LTC2450-1  
uses a single 2.7V to 5.5V supply, accepts a single-ended  
analog input voltage, and communicates through an SPI  
interface. It includes an integrated oscillator that does  
not require any external components. The delta-sigma  
modulator converter core provides single-cycle settling  
time for multiplexed applications. The converter is avail-  
able in a 6-pin, 2mm × 2mm DFN package. The LTC2450-1  
implements a proprietary input sampling scheme that  
reducestheaverageinputsamplingcurrentseveralorders  
of magnitude.  
n
GND to V Single-Ended Input Range  
CC  
n
n
n
n
n
n
60 Conversions Per Second  
0.02LSB RMS Noise  
16-Bits, No Missing Codes  
0.5mV Offset Error  
4LSB Full-Scale Error  
Single Conversion Settling Time for Multiplexed  
Applications  
Single Cycle Operation with Auto Shutdown  
350μA Supply Current  
50nA Sleep Current  
Internal Oscillator—No External Components  
Required  
Single Supply, 2.7V to 5.5V Operation  
SPI Interface  
Ultra-Tiny, 2mm × 2mm DFN Package  
n
n
n
n
n
n
n
The LTC2450-1 is capable of up to 60 conversions per  
second and, due to the very large oversampling ratio, has  
extremelyrelaxedantialiasingrequirements.Theconverter  
uses its power supply voltage as the reference voltage and  
the single-ended, rail-to-rail input voltage range extends  
APPLICATIONS  
n
from GND to V .  
System Monitoring  
Environmental Monitoring  
CC  
n
Following a conversion, the LTC2450-1 can automatically  
enter a sleep mode and reduce its power to less than  
500nA. At an output rate of 1Hz, the LTC2450-1 consumes  
an average of less than 25μW from a 2.7V supply.  
n
Direct Temperature Measurements  
n
Instrumentation  
n
Industrial Process Control  
n
Data Acquisition  
n
Embedded ADC Upgrades  
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Easy Drive  
is a trademark of Linear Technology Corporation. All other trademarks are the property of their  
respective owners. Protected by U.S. Patents including 6208279, 6411242, 7088280, 7164378.  
TYPICAL APPLICATION  
Integral Nonlinearity  
3.0  
2.5  
2.0  
2.7 TO 5.5V  
1.5  
10μF  
0.1μF  
1.0  
0.5  
V
0
CC  
CS  
CLOSE TO  
CHIP  
–0.5  
–1.0  
–1.5  
–2.0  
–2.5  
–3.0  
1k  
SCK  
SDO  
3-WIRE SPI  
INTERFACE  
LTC2450-1  
GND  
V
IN  
SENSE  
0.1μF  
24501 TA01  
0
1.0  
1.5  
2.0  
2.5  
3.0  
0.5  
INPUT VOLTAGE (V)  
24501 G02  
24501fb  
1
1234567...20

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