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LTC2453_1

更新时间： 2024-01-31 01:52:05
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
18页 194K
描述
Ultra-Tiny, Differential, 16-Bit ΔΣ ADC With I2C Interface

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LTC2453_1 数据手册

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LTC2453  
Ultra-Tiny, Differential,  
16-Bit ΔΣ ADC With  
2
I C Interface  
FEATURES  
DESCRIPTION  
The LTC®2453 is an ultra-tiny, fully differential, 16-bit,  
analog-to-digital converter. The LTC2453 uses a single  
2.7V to 5.5V supply and communicates through an I2C  
interface.TheADCisavailableinan8-pin,3mm×2mmDFN  
package or 8-pin, 3mm × 3mm TSOT package. It includes  
an integrated oscillator that does not require any external  
components.Itusesadelta-sigmamodulatorasaconverter  
core and has no latency for multiplexed applications. The  
LTC2453 includes a proprietary input sampling scheme  
that reduces the average input sampling current several  
orders of magnitude lower than conventional delta-sigma  
converters. Additionally, due to its architecture, there is  
negligible current leakage between the input pins.  
■
±± Differential Input Range  
CC  
■
16-Bit Resolution (Including Sign), No Missing Codes  
■
2LSB Offset Error  
4LSB Full-Scale Error  
60 Conversions Per Second  
■
■
■
Single Conversion Settling Time for Multiplexed  
Applications  
■
Single-Cycle Operation with Auto Shutdown  
■
800μA Supply Current  
0.2μA Sleep Current  
■
■
Internal Oscillator—No External Components Required  
2
■
2-Wire I C Interface  
■
Ultra-Tiny 8-Pin 3mm × 2mm DFN  
and TSOT23 Packages  
The LTC2453 can sample at 60 conversions per second,  
andduetotheverylargeoversamplingratio,hasex-tremely  
relaxed antialiasing requirements. The LTC2453 includes  
continuous internal offset and full-scale calibration algo-  
rithms which are transparent to the user, ensuring accuracy  
over time and over the operating temperature range. The  
APPLICATIONS  
■
System Monitoring  
■
Environmental Monitoring  
■
Direct Temperature Measurements  
+
–
■
Instrumentation  
converterhasexternalREF andREF pinsandthedifferential  
+
–
■
Industrial Process Control  
input voltage range can extend up to (V  
– V  
).  
REF  
REF  
■
Data Acquisition  
Followingasingleconversion,theLTC2453canauto-matically  
enterasleepmodeandreduceitspowertolessthan0.2μA.If  
theuserreadstheADConceasecond,theLTC2453consumes  
an average of less than 50μW from a 2.7V supply.  
■
Embedded ADC Upgrades  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. No Latency ΔΣ 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.  
Integral Nonlinearity, ±CC = 3±  
TYPICAL APPLICATION  
2.0  
V
V
V
= 3V  
CC  
+
= 3V  
= 0V  
REF  
REF  
1.5  
1.0  
0.5  
–
2.7V TO 5.5V  
0.1μF  
10μF  
T
= –45°C, 25°C, 90°C  
+
A
0.1μF  
0.1μF  
REF  
REF  
V
CC  
+
–
IN  
IN  
0
SCL  
SDA  
10k  
10k  
10k  
R
2
2-WIRE I C  
–0.5  
LTC2453  
GND  
INTERFACE  
–1.0  
–1.5  
–2.0  
–
2453 TA01  
–2  
–1  
1
–3  
2
3
0
DIFFERENTIAL INPUT VOLTAGE (V)  
2453 TA01b  
2453fb  
1
1234567...18

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