The CM6012ff is a touch sensor implemented in Silterra D18V technology, using 5V devices for the analog section and 1.8V devices for the digital section.
It is based on an RC oscillator, in which the oscillation frequency is altered by the added capacitance when the user touches the capacitive button.
The IP is able to deal with 4 buttons in time multiplexed fashion. It consumes 200um x 127um in silicon.
The IP is easily portable to other technologies that include high resistivity poly resistors.
400kHz Touch Sensor Silterra 0.18 um
Overview
Key Features
- Capacitive sensing oscillator
- 2pF sensibility
- 400kHz output frequency
- Supply voltage: 3V to 5.5V
- Process trimming
- 4 channels
- Area: 0.025mm²
Block Diagram
Applications
- Touch sensing
- Button replacement
Deliverables
- Datasheet and integration guide
- HDL model
- Flat GDSII database/LVS netlist
- Customer support
Technical Specifications
Foundry, Node
Silterra 0.18 um
Maturity
Silicon Proven
Silterra
Silicon Proven:
180nm
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