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LTC2447IUHF PDF预览

LTC2447IUHF

更新时间： 2024-11-11 05:43:47
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
28页 303K
描述
24-Bit High Speed 8-Channel ΔΣ ADCs with Selectable Multiple Reference Inputs

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中文翻译

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LTC2447IUHF 技术参数

是否Rohs认证： 不符合生命周期：Transferred
零件包装代码：QFN包装说明：HVQCCN, LCC38,.2X.28,20
针数：38Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.1最大模拟输入电压：2.75 V
最小模拟输入电压：-0.05 V最长转换时间：0.17 µs
转换器类型：ADC, DELTA-SIGMAJESD-30 代码：R-PQCC-N38
JESD-609代码：e0长度：7 mm
湿度敏感等级：1模拟输入通道数量：8
位数：24功能数量：1
端子数量：38最高工作温度：85 °C
最低工作温度：-40 °C输出位码：BINARY
输出格式：SERIAL封装主体材料：PLASTIC/EPOXY
封装代码：HVQCCN封装等效代码：LCC38,.2X.28,20
封装形状：RECTANGULAR封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：235电源：5 V
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：Analog to Digital Converters标称供电电压：5 V
表面贴装：YES技术：CMOS
温度等级：INDUSTRIAL端子面层：Tin/Lead (Sn/Pb)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：20
宽度：5 mmBase Number Matches：1

LTC2447IUHF 数据手册

 浏览型号LTC2447IUHF的Datasheet PDF文件第2页浏览型号LTC2447IUHF的Datasheet PDF文件第3页浏览型号LTC2447IUHF的Datasheet PDF文件第4页浏览型号LTC2447IUHF的Datasheet PDF文件第5页浏览型号LTC2447IUHF的Datasheet PDF文件第6页浏览型号LTC2447IUHF的Datasheet PDF文件第7页 
LTC2446/LTC2447  
24-Bit High Speed  
8-Channel ∆Σ ADCs with  
Selectable Multiple Reference Inputs  
U
FEATURES  
DESCRIPTIO  
The LTC®2446/LTC2447 4-terminal switching enables  
■
Five Selectable Differential Reference Inputs  
Four Differential/Eight Single-Ended Inputs  
4-Way MUX for Multiple Ratiometric  
Measurements  
■
■
multiplexed ratiometric measurements. Four sets of se-  
lectable differential inputs coupled with four sets of differ-  
ential reference inputs allow multiple RTDs, bridges and  
other sensors to be digitized by a single converter. A fifth  
differential reference input can be selected for any input  
channel not requiring ratiometric measurements (ther-  
mocouples, voltages, current sense, etc.). The flexible  
input multiplexer allows single-ended or differential in-  
puts coupled with a slaved reference input or a universal  
reference input.  
■
■
■
Up to 8kHz Output Rate  
Up to 4kHz Multiplexing Rate  
Selectable Speed/Resolution:  
2µVRMS Noise at 1.76kHz Output Rate  
200nVRMS Noise at 13.8Hz Output Rate with  
Simultaneous 50/60Hz Rejection  
■
Guaranteed Modulator Stability and Lock-Up  
Immunity for any Input and Reference Conditions  
0.0005% INL, No Missing Codes  
Autosleep Enables 20µA Operation at 6.9Hz  
<5µV Offset (4.5V < VCC < 5.5V, –40°C to 85°C)  
Differential Input and Differential Reference with  
GND to VCC Common Mode Range  
No Latency Mode, Each Conversion is Accurate Even  
After a New Channel is Selected  
■
■
■
■
A proprietary delta-sigma architecture results in absolute  
accuracy (offset, full-scale, linearity) of 15ppm, noise as  
low as 200nVRMS and speeds as high as 8kHz. Through a  
simple 4-wire interface, ten speed/resolution combina-  
tions can be selected. The first conversion following a  
speed, resolution, channel change or reference change is  
valid since there is no settling time between conversions,  
enabling scan rates of up to 4kHz. Additionally, a 2x mode  
can be selected for any speed-enabling output rates up to  
8kHz with one cycle of latency.  
■
■
■
Internal Oscillator—No External Components  
LTC2447 Includes MUXOUT/ADCIN for External  
Buffering or Gain  
■
Tiny QFN 5mm xU7mm Package  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Protected by U.S. Patents, including 6140950, 6169506, 6208279, 6411242, 6639526  
APPLICATIO S  
■
Flow  
■
Weight Scales  
■
Pressure  
■
Direct Temperature Measurement  
■
Gas Chromatography  
U
TYPICAL APPLICATIO  
LTC2446 Speed vs RMS Noise  
100  
Multiple Ratiometric Measurement System  
V
V
V
= 5V  
CC  
= 5V  
REF  
+
–
= V = 0V  
IN  
IN  
2x SPEED MODE  
V
LTC2446  
CC  
NO LATENCY MODE  
+
10  
1
REF  
2.8µV AT 880Hz  
CS  
+
IN  
280nV AT 6.9Hz  
(50/60Hz REJECTION)  
+
–
•
•
•
19-INPUT  
4-OUTPUT  
MUX  
SDI  
SDO  
SCK  
VARIABLE SPEED/  
RESOLUTION 24-BIT  
–
∆Σ ADC  
IN  
–
REF  
0.1  
1
10  
100  
1000  
10000  
CONVERSION RATE (Hz)  
24467 TA01  
24467 TA02  
24467fa  
1
1234567...28

中文翻译

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