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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。

部分文件列表

文件名 大小
PCap04数据手册.pdf 3M

部分页面预览

(完整内容请下载后查看)
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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