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微小电容测量芯片 PCap04数据手册

更新时间：2019-08-30 08:49:42 大小：3M 上传用户：duyide查看TA发布的资源 标签：pcap04电容测量 下载积分：2分 评价赚积分 （如何评价?） 打赏 收藏 评论(0) 举报

资料介绍

由ACAM公司开发的最新的微小电容测量芯片Pcap04。

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文件名 大小
PCap04数据手册.pdf 3M

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PCap04  
Capacitance-to-Digital Converter  
PCap04 is a capacitance-to-digital converter (CDC) with  
integrated digital signal processor (DSP) for on-chip data  
post-processing. Its front end is based on ams PICOCAP  
principle.  
General Description  
This conversion principle offers outstanding flexibility with  
respect to power consumption, resolution and speed. Further,  
PCap04 covers a wide capacitance input range from a few  
femtofarads up to several hundreds of nanofarads. It is easy to  
configure the PCap04 for different capacitance measurement  
tasks, i.e. single as well as differential sensors in both, grounded  
or floating connection. The on-chip DSP allows to implement  
sensor algorithms like linearization and temperature  
compensation, with data output in a digital (SPI or IIC) or analog  
(PDM/PWM) way.  
Ordering Information and Content Guide appear at end of  
datasheet.  
Key Benefits & Features  
The benefits and features of PCap04, Capacitance-to-Digital  
Converter are listed below:  
Figure 1:  
Added Value of Using PCap04  
Benefits  
Features  
• Up to 6 capacitors grounded, 3 capacitors floating  
• Capacitance range 1pF to 100nF  
• Internal reference 1pF to 31pF  
• Integrated guard driver  
• High flexibility: Easy adaption to various  
applications - ultra low power, high resolution or  
high speed - just by configuration  
• Up to 8aF at 2.5Hz and 10pF base capacitance  
• Up to 50kHz sample rate  
• High resolution or high speed  
• Up to 20-bit resolution  
• 32-bit DSP  
• 3k ROM code, 1k NVRAM  
• 96 x 32 bit RAM  
• SPI / IIC interface  
• On-chip DSP for sensor algorithms, signal  
post-processing including linearization and  
temperature compensation  
• PDM / PWM outputs, GPIO  
• Supply voltage 2.1/3.0V to 3.6V  
• Operating current down to 3μA  
• PCap04-Bxxx -40°C to 85°C  
• PCap04-Axxx -40°C to 125°C  
• QFN24 or die (1.588mm x 1.46mm)  
• On-chip and external temperature measurement  
capability  
ams Datasheet  
[v1-03] 2018-Apr-04  

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