Key facts
- Brand
- NXP
- Model
- PCF8885
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2014-05-28
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NXP PCF8885 Capacitive 8-Channel Touch and Proximity Sensor Datasheet
The NXP PCF8885 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 PCF8885 specifications
| Number of sensor channels | 8 |
|---|---|
| Operating voltage range | 2.5 V to 5.5 V |
| Supply current (sleep mode) | < 100 nA |
| Operating temperature range | -40 °C to +85 °C |
| Package types | TSSOP28 and SOIC28 |
Source: NXP PCF8885 Capacitive 8-Channel Touch and Proximity Sensor Datasheet
All NXP PCF8885 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 main function of the PCF8885?
It is a capacitive 8-channel touch and proximity sensor that detects changes in capacitance on remote sensing plates.
From: NXP PCF8885 Capacitive 8-Channel Touch and Proximity Sensor Datasheet
Does the PCF8885 support matrix arrangements?
Yes, it supports a matrix arrangement where interrupt generation occurs only when two channels are activated simultaneously.
From: NXP PCF8885 Capacitive 8-Channel 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