Key facts
- Brand
- NXP
- Model
- PCA8885
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2014-05-28
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NXP PCA8885 Capacitive Touch and Proximity Sensor Datasheet
The NXP PCA8885 is an integrated circuit designed as a capacitive 8-channel touch and proximity sensor. It utilizes a patented EDISEN method to detect changes in capacitance on remote sensing plates, such as conductive foils connected via coaxial cable. The device features continuous auto-calibration to compensate for static capacitance changes and supports both direct and latching switch modes.
Read onlineNXP PCA8885 specifications
| Number of channels | 8 |
|---|---|
| Operating voltage range | 2.5V to 5.5V |
| Operating temperature range | -40°C to +85°C |
| Interface | I2C Fast-mode Plus (Fm+) |
| Sleep mode current | < 100 nA |
| Low-power battery current | ~10 µA |
| Compliance standard | AEC-Q100 |
Source: NXP PCA8885 Capacitive Touch and Proximity Sensor Datasheet
All NXP PCA8885 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the PCA8885?
The PCA8885 is a capacitive 8-channel touch and proximity sensor that uses a patented EDISEN method to detect capacitance changes.
From: NXP PCA8885 Capacitive Touch and Proximity Sensor Datasheet
Can the sensing plates be connected remotely?
Yes, remote sensing plates can be connected to the IC using coaxial cable.
From: NXP PCA8885 Capacitive Touch and Proximity Sensor Datasheet
How does the auto-calibration feature protect against environmental changes?
The devices digitally filter out very slow and very quick changes in capacitance at the input, making performance less affected by dirt, humidity, or freezing temperatures.
From: NXP AN11122 Water and Condensation Safe Touch Sensing Application Note
What is the recommended gap between the sensor plate and ground ring?
It is recommended that the gap be kept larger than the overlay thickness, though a 2.2 mm gap is sufficient even if the overlay is thicker than 2 mm.
From: NXP AN11122 Water and Condensation Safe Touch Sensing Application Note