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LTC2414 PDF预览

LTC2414

更新时间： 2023-12-20 18:45:13
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
50页 871K
描述
8 通道、24 位、无延迟增量累加 ΔΣ ADC

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LTC2414 数据手册

 浏览型号LTC2414的Datasheet PDF文件第2页浏览型号LTC2414的Datasheet PDF文件第3页浏览型号LTC2414的Datasheet PDF文件第4页浏览型号LTC2414的Datasheet PDF文件第5页浏览型号LTC2414的Datasheet PDF文件第6页浏览型号LTC2414的Datasheet PDF文件第7页 
LTC2414/LTC2418  
8-/16-Channel  
24-Bit No Latency ∆Σ™ ADCs  
FeaTures  
DescripTion  
The LTC®2414/LTC2418 are 8-/16-channel (4-/8-differen-  
tial) micropower 24-bit ∆∑ analog-to-digital converters.  
They operate from 2.7V to 5.5V and include an integrated  
oscillator, 2ppm INL and 0.2ppm RMS noise. They use  
delta-sigma technology and provide single cycle settling  
time for multiplexed applications. Through a single pin,  
the LTC2414/LTC2418 can be configured for better than  
110dB differential mode rejection at 50Hz or 60Hz 2ꢀ,  
or they can be driven by an external oscillator for a user-  
definedrejectionfrequency.Theinternaloscillatorrequires  
no external frequency setting components.  
n
8-/16-Channel Single-Ended or 4-/8-Channel  
Differential Inputs (LTC2414/LTC2418)  
n
Low Supply Current (200µA, 4µA in Autosleep)  
n
Differential Input and Differential Reference with  
GND to V Common Mode Range  
CC  
n
n
n
n
2ppm INL, No Missing Codes  
2.5ppm Full-Scale Error and 0.5ppm Offset  
0.2ppm Noise  
No Latency: Digital Filter Settles in a Single Cycle  
Each Conversion Is Accurate, Even After a New  
Channel Is Selected  
n
n
Single Supply 2.7V to 5.5V Operation  
Internal Oscillator—No External Components  
Required  
The LTC2414/LTC2418 accept any external differential  
reference voltage from 0.1V to V for flexible ratiomet-  
CC  
ric and remote sensing measurement applications. They  
can be configured to take 4/8 differential channels or  
8/16 single-ended channels. The full-scale bipolar input  
n
110dB Min, 50Hz/60Hz Notch Filter  
applicaTions  
rangeisfrom–0.5V to0.5V .Thereferencecommon  
REF  
REF  
n
Direct Sensor Digitizer  
mode voltage, V  
, and the input common mode volt-  
REFCM  
n
Weight Scales  
age, V  
, may be independently set within GND to V .  
INCM  
CC  
n
Direct Temperature Measurement  
Gas Analyzers  
Strain Gauge Transducers  
Instrumentation  
Data Acquisition  
Industrial Process Control  
TheDCcommonmodeinputrejectionisbetterthan140dB.  
n
The LTC2414/LTC2418 communicate through a flexible  
4-wire digital interface that is compatible with SPI and  
MICROWIRE protocols.  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and  
No Latency �∑ is a trademark of Linear Technology Corporation. All other trademarks are the  
property of their respective owners.  
n
n
n
n
Typical applicaTion  
Total Unadjusted Error  
vs Input Voltage  
2.7V TO 5.5V  
3
V
V
V
F
= 5V  
= 5V  
INCM  
= GND  
CC  
REF  
1µF  
11  
9
2
1
= V  
= 2.5V  
REFCM  
+
V
CC  
REF  
V
CC  
21 CH0  
22 CH1  
O
= 50Hz REJECTION  
19  
F
= EXTERNAL OSCILLATOR  
= 60Hz REJECTION  
O
T
= 25°C  
A
•
•
•
20  
28 CH7  
1
SDI  
SCK  
SDO  
CS  
0
16-CHANNEL  
MUX  
18  
17  
16  
CH8  
+
–
DIFFERENTIAL  
24-BIT ē∑ ADC  
T
= –45°C  
4-WIRE  
SPI INTERFACE  
A
THERMOCOUPLE  
•
•
•
T
A
= 85°C  
–1  
–2  
–3  
8
CH15  
10 COM  
–
12 REF  
–2.5 –2 –1.5 –1 –0.5  
0 0.5 1.0 1.5 2.0 2.5  
15  
INPUT VOLTAGE (V)  
GND  
LTC2418  
2414/18 TA01b  
241418 TA01a  
241418fb  
1
For more information www.linear.com/LTC2414  
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