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LTC2445CUHF#TRPBF PDF预览

LTC2445CUHF#TRPBF

更新时间： 2024-02-23 12:14:53
品牌 Logo 应用领域
凌特 - Linear 转换器
页数 文件大小 规格书
30页 327K
描述
LTC2445 - 24-Bit High Speed 8-/16-Channel Delta Sigma ADCs with Selectable Speed/Resolution; Package: QFN; Pins: 38; Temperature Range: 0°C to 70°C

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LTC2445CUHF#TRPBF 技术参数

是否Rohs认证： 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：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.09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：170000 µs
转换器类型：ADC, DELTA-SIGMAJESD-30 代码：R-PQCC-N38
JESD-609代码：e3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：70 °C
最低工作温度：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）：260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：COMMERCIAL端子面层：Matte Tin (Sn)
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：30
宽度：5 mmBase Number Matches：1

LTC2445CUHF#TRPBF 数据手册

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LTC2444/LTC2445/  
LTC2448/LTC2449  
24-Bit High Speed  
8-/16-Channel ∆∑ ADCs with  
Selectable Speed/Resolution  
DescripTion  
FeaTures  
The LTC®2444/LTC2445/LTC2448/LTC2449 are 8-/16-  
channel (4-/8-differential) high speed 24-bit No Latency  
n
Up to 8 Differential or 16 Single-Ended Input Channels  
n
Up to 8kHz Output Rate (External f )  
O
™
n
Up to 4kHz Multiplexing Rate (External f )  
∆Σ ADCs. They use a proprietary delta-sigma architec-  
O
n
Selectable Speed/Resolution  
ture enabling variable speed/resolution. Through a simple  
4-wireserialinterface, tenspeed/resolutioncombinations  
n
2µV  
Noise at 1.76kHz Output Rate  
RMS  
RMS  
n
n
200nV  
Noise at 13.8Hz Output Rate with  
6.9Hz/280nV  
to 3.5kHz/25µV  
(4kHz with external  
RMS  
RMS  
Simultaneous 50Hz/60Hz Rejection  
oscillator) can be selected with no latency between con-  
version results or shift in DC accuracy (offset, full-scale,  
linearity, drift). Additionally, a 2X speed mode can be  
selected enabling output rates up to 7kHz (8kHz if an  
external oscillator is used) with one cycle latency.  
Guaranteed Modulator Stability and Lock-Up  
Immunity for any Input and Reference Conditions  
0.0005% INL, No Missing Codes  
n
n
n
n
Autosleep Enables 20µA Operation at 6.9Hz  
<5µV Offset (4.5V < V < 5.5V, –40°C to 85°C)  
CC  
Any combination of single-ended or differential inputs  
can be selected with a common mode input range from  
Differential Input and Differential Reference with  
GND to V Common Mode Range  
CC  
ground to V , independent of V . While operating in  
CC  
REF  
n
No Latency Mode, Each Conversion is Accurate Even  
After a New Channel is Selected  
the 1X speed mode the first conversion following a new  
speed, resolution, or channel selection is valid. Since  
there is no settling time between conversions, all 8 dif-  
ferential channels can be scanned at a rate of 500Hz.  
At the conclusion of each conversion, the converter is  
internally reset eliminating any memory effects between  
successive conversions and assuring stability of the high  
order delta-sigma modulator.  
n
n
Internal Oscillator—No External Components  
LTC2445/LTC2449 Include MUXOUT/ADCIN for  
External Buffering or Gain  
n
Tiny QFN 5mm × 7mm Package  
applicaTions  
n
High Speed Multiplexing  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and  
No Latency ∆∑ and SoftSpan are trademarks of Linear Technology Corporation. All other  
trademarks are the property of their respective owners.  
n
Weight Scales  
n
Auto Ranging 6-Digit DVMs  
n
Direct Temperature Measurement  
n
High Speed Data Acquisition  
Typical applicaTion  
LTC2444/LTC2448  
RMS Noise vs Speed  
Simple 24-Bit Variable Speed Data Acquisition System  
100  
4.5V TO 5.5V  
V
V
V
= 5V  
CC  
= 5V  
IN  
REF  
+
–
= V = 0V  
1µF  
IN  
2X SPEED MODE  
+
REF  
V
CC  
NO LATENCY MODE  
CH0  
CH1  
= EXTERNAL OSCILLATOR  
10  
1
= INTERNAL OSCILLATOR  
F
O
2.8µV AT 880Hz  
(SIMULTANEOUS 50Hz/60Hz  
REJECTION AT 6.9Hz OUTPUT RATE)  
•
•
•
CH7  
CH8  
SDI  
SCK  
SDO  
CS  
280nV AT 6.9Hz  
(50/60Hz REJECTION)  
16-CHANNEL  
MUX  
VARIABLE SPEED/  
RESOLUTION  
+
–
4-WIRE  
SPI INTERFACE  
THERMOCOUPLE  
•
•
•
DIFFERENTIAL  
24-BIT ∆∑ ADC  
CH15  
COM  
0.1  
1
10  
100  
1000  
10000  
–
REF  
CONVERSION RATE (Hz)  
GND  
LTC2448  
2440 TA01b  
2444 TA01a  
2444589fc  
1
For more information www.linear.com/LTC2444  
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中文翻译

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LTC2445CUHF#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC2445IUHF#TR Linear

完全替代

 LTC2445 - 24-Bit High Speed 8-/16-Channel Delta Sigma ADCs with Selectable Speed/Resolutio

与LTC2445CUHF#TRPBF相关器件

型号 品牌 获取价格 描述 数据表
LTC2445I Linear

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 		24-Bit High Speed 8-/16-Channel ADCs with Selectable Speed/Resolution
LTC2445IUHF Linear

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 		24-Bit High Speed 8-/16-Channel ADCs with Selectable Speed/Resolution
LTC2445IUHF#TR Linear

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 		LTC2445 - 24-Bit High Speed 8-/16-Channel Delta Sigma ADCs with Selectable Speed/Resolutio
LTC2445IUHF#TRPBF Linear

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 		LTC2445 - 24-Bit High Speed 8-/16-Channel Delta Sigma ADCs with Selectable Speed/Resolutio
LTC2446 Linear

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 		24-Bit High Speed 8-Channel ΔΣ ADCs with Sele
LTC2446 ADI

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 		具可选多个基准输入的 24 位、高速、8 通道 ΔΣ ADC
LTC2446_15 Linear

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 		24-Bit High Speed 8-Channel ADCs with Selectable Multiple Reference Inputs
LTC2446CUHF Linear

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 		24-Bit High Speed 8-Channel ΔΣ ADCs with Sele
LTC2446CUHF#PBF Linear

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 		LTC2446 - 24-Bit High Speed 8-Channel Delta Sigma ADCs with Selectable Multiple Reference
LTC2446CUHF#TR Linear

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 		LTC2446 - 24-Bit High Speed 8-Channel Delta Sigma ADCs with Selectable Multiple Reference

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