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微小电容测量芯片 PCap04数据手册
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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