Key facts
- Brand
- NXP
- Model
- PCF8883
- Category
- sensor
- Industry
- Industrial
- Documents
- 4
- Languages
- EN
- Last added
- 2014-05-28
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NXP UM10370 User Manual for the PCF8883 Evaluation Kit OM11055 Manual
The PCF8883 Evaluation Kit OM11055 is a development board for the single‑channel PCF8883 capacitive proximity switch. It can be powered via a mini‑USB cable or a 9 V battery and includes four built‑in sensor plates plus connectors for external sensors.
The manual explains how to select operation modes with jumper J9, configure sensor plates, adjust sensitivity by swapping through‑hole components, and use the optional high‑impedance op‑amp for voltage monitoring.
NXP PCF8883 specifications
| Input capacitance range | 10 pF to 60 pF |
|---|---|
| Operating voltage | 3 V to 9 V |
| Operating temperature | -40 °C to +85 °C |
| Typical supply current | 3 µA |
Source: NXP PCF8883 Capacitive Touch and Proximity Switch Datasheet
All NXP PCF8883 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
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 operating voltage range for the PCF8883?
The device operates with a supply voltage between 3 V and 9 V.
From: NXP PCF8883 Capacitive Touch and Proximity Switch Datasheet
What is the typical current consumption of this sensor?
The chip draws 3 mA when powered by a battery.
From: NXP PCF8883 Capacitive Touch and Proximity Switch 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
What is the maximum total capacitance allowed on the sensor input for reliable operation?
The total capacitance on the input must be lower than 60 pF to ensure the control loop works correctly.
What is the lowest resistance value allowed for the Rg component?
The lowest value allowed for the Rg resistance is 20 kOhm.