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LTC2401CMS

更新时间： 2024-01-16 12:58:28
品牌 Logo 应用领域
凌特 - Linear 转换器光电二极管
页数 文件大小 规格书
12页 175K
描述
1-/2-Channel 24-Bit uPower No Latency ADC in MSOP-10

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LTC2401CMS 数据手册

 浏览型号LTC2401CMS的Datasheet PDF文件第2页浏览型号LTC2401CMS的Datasheet PDF文件第3页浏览型号LTC2401CMS的Datasheet PDF文件第4页浏览型号LTC2401CMS的Datasheet PDF文件第5页浏览型号LTC2401CMS的Datasheet PDF文件第6页浏览型号LTC2401CMS的Datasheet PDF文件第7页 
Final Electrical Specifications  
LTC2401/LTC2402  
1-/2-Channel 24-Bit µPower  
No Latency ∆ΣTMADC in MSOP-10  
January 2000  
U
FEATURES  
DESCRIPTIO  
■
24-Bit ADC in Tiny MSOP-10 Package  
The LTC®2401/LTC2402 are 1- and 2-channel 2.7V to  
5.5Vmicropower24-bitanalog-to-digitalconverterswith  
an integrated oscillator, 4ppm INL and 0.6ppm RMS  
noise. These ultrasmall devices use delta-sigma technol-  
ogy and a new digital filter architecture that settles in a  
single cycle. This eliminates the latency found in conven-  
tional ∆Σ converters and simplifies multiplexed applica-  
tions.  
■
1- or 2-Channel Inputs  
■
Automatic Channel Selection (Ping-Pong) (LTC2402)  
Zero Scale and Full Scale Set for Reference  
and Ground Sensing  
4ppm INL, No Missing Codes  
4ppm Full-Scale Error  
0.5ppm Offset  
0.6ppm Noise  
Internal Oscillator—No External Components Required  
110dB Min, 50Hz/60Hz Notch Filter  
Single Conversion Settling Time for  
Multiplexed Applications  
Reference Input Voltage: 0.1V to VCC  
Live Zero—Extended Input Range Accommodates  
12.5% Overrange and Underrange  
Single Supply 2.7V to 5.5V Operation  
Low Supply Current (200µA) and Auto Shutdown  
■
■
■
■
■
■
■
■
Through a single pin, the LTC2401/LTC2402 can be  
configured for better than 110dB rejection at 50Hz or  
60Hz ±2%, or can be driven by an external oscillator for  
a user defined rejection frequency in the range 1Hz to  
120Hz. The internal oscillator requires no external fre-  
quency setting components.  
■
■
These converters accept an external reference voltage  
from 0.1V to VCC. With an extended input conversion  
■
■
range of –12.5% VREF to 112.5% VREF (VREF = FSSET  
–
ZSSET), the LTC2401/LTC2402 smoothly resolve the off-  
set and overrange problems of preceding sensors or  
signal conditioning circuits.  
U
APPLICATIO S  
■
Weight Scales  
The LTC2401/LTC2402 communicate through a 2- or  
3-wire digital interface that is compatible with SPI and  
MICROWIRETM protocols.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
No Latency ∆Σ is a trademark of Linear Technology Corporation.  
MICROWIRE is a trademark of National Semiconductor Corporation.  
■
Direct Temperature Measurement  
■
Gas Analyzers  
Strain-Gage Transducers  
Instrumentation  
Data Acquisition  
Industrial Process Control  
■
■
■
■
U
TYPICAL APPLICATIO  
Pseudo Differential Bridge Digitizer  
2.7V TO 5.5V  
2.7V TO 5.5V  
V
CC  
1µF  
1
2
4
3
5
= INTERNAL OSC/50Hz REJECTION  
V
1
10  
CC  
= EXTERNAL CLOCK SOURCE  
= INTERNAL OSC/60Hz REJECTION  
V
F
O
CC  
LTC2402  
LTC2402  
SET  
FS  
9
SCK  
SDO  
CS  
2
3
4
5
9
8
7
6
REFERENCE VOLTAGE  
ZS + 0.1V TO V  
FS  
SET  
SCK  
SDO  
CS  
SET  
CC  
ANALOG  
INPUT RANGE  
TO 1.12V  
8
3-WIRE  
SPI INTERFACE  
CH0  
CH1  
ZS  
3-WIRE  
SPI INTERFACE  
CH1  
CH0  
ZS  
7
–0.12V  
REF  
REF  
(V  
REF  
= FS  
– ZS  
)
SET  
SET  
10  
F
O
SET  
INTERNAL OSCILLATOR  
60Hz REJECTION  
0V TO FS  
– 100mV  
GND  
SET  
SET  
GND  
6
24012 TA01  
24012TA02  
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.  
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-  
tation that the interconnection ofits circuits as described herein willnotinfringe on existing patentrights.  
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