Capacitive sensing
PE 5004:
- Sensing of up to 100 capacitive touch sensors
- Controllable stimulation for wide spread of suitable sensor capacitance, layout and material
- Highly sensitive, coatings of over 30mm possible
- Very low acquisition time of 10ms for 100 sensors in a matrix
- High resolution of 10bit for each sensor capacitive changes of less than 5fF detectable
- Standby mode with programmable wake up intervals
- Low operating current
- Low-Power Mode for large Sensor shapes
- Very low current during deep sleep (1μA)
- No need for grounding of scanned object
- No need for sampling capacitors or external resistors
- High sensitivity to large parasitic capacitances
- Very robust against noise
- Temperature drift compensation
- Multiple sensor arrays and PE5004 chips controllable with one μC
Download link: DS_PE5004.pdf
PE 5010:
- 12Bit sigma delta converter
- Two channels
- Each channel has the possibility for differential or singled-ended measurements
- Implemented calibration routine for both channels
- Internal offset capacitance
- SPI slave
- Low conversation time
- Possibility for external excitation frequency input
- TSSOP16 package
Download link: DS_PE5010.pdf