Overview
The FDC1004DGSR, produced by Texas Instruments, is a high-resolution, 4-channel capacitance-to-digital converter designed for implementing capacitive sensing solutions. This device is particularly suited for low-power, low-cost, and high-resolution contact-less sensing applications. It features a small footprint, making it ideal for space-constrained designs, and is available in 10-pin WSON and VSSOP packages. The FDC1004DGSR supports various sensing techniques, including proximity sensing, gesture recognition, material analysis, and remote liquid level sensing, among others.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Range | ±15 pF | pF |
| Measurement Resolution | 0.5 fF | fF |
| Maximum Offset Capacitance | 100 pF | pF |
| Programmable Output Rates | 100/200/400 S/s | S/s |
| Maximum Shield Load | 400 pF | pF |
| Supply Voltage | 3.3 V | V |
| Temperature Range | –40° to 125°C | °C |
| Current Consumption (Active) | 750 µA | µA |
| Current Consumption (Standby) | 29 µA | µA |
| Interface | I2C | |
| Number of Channels | 4 |
Key Features
- High-resolution capacitance-to-digital conversion with a measurement resolution of 0.5 fF.
- Supports up to 100 pF of sensor offset capacitance, allowing for remote sensor applications.
- Includes shield drivers to reduce EMI interference and focus the sensing direction.
- Low power consumption with active current of 750 µA and standby current of 29 µA.
- I2C interface for easy communication with microcontrollers.
- Compact 10-pin WSON and VSSOP packages suitable for space-constrained designs.
Applications
- Proximity sensing and gesture recognition.
- Automotive door and kick sensors.
- Automotive rain, fog, ice, and snow sensors.
- Remote and direct liquid level sensing.
- High-resolution metal profiling.
- Material size detection and material stack height measurement.
Q & A
- What is the FDC1004DGSR used for? The FDC1004DGSR is used for implementing high-resolution capacitive sensing solutions in various applications such as proximity sensing, gesture recognition, and material analysis.
- What is the measurement resolution of the FDC1004DGSR? The measurement resolution is 0.5 fF.
- What is the maximum offset capacitance the FDC1004DGSR can handle? The maximum offset capacitance is 100 pF.
- What are the programmable output rates of the FDC1004DGSR? The programmable output rates are 100, 200, and 400 samples per second (S/s).
- What is the supply voltage of the FDC1004DGSR? The supply voltage is 3.3 V.
- What is the temperature range of the FDC1004DGSR? The temperature range is –40° to 125°C.
- How many channels does the FDC1004DGSR have? The FDC1004DGSR has 4 channels.
- What interface does the FDC1004DGSR use? The FDC1004DGSR uses an I2C interface.
- What are the typical applications of the FDC1004DGSR? Typical applications include proximity sensing, gesture recognition, automotive sensors, remote liquid level sensing, and material analysis.
- What is the current consumption of the FDC1004DGSR in active and standby modes? The active current consumption is 750 µA, and the standby current consumption is 29 µA.
- In what packages is the FDC1004DGSR available? The FDC1004DGSR is available in 10-pin WSON and VSSOP packages.
