Overview
The Texas Instruments FDC2212DNTT is a 2-channel, high-resolution capacitance-to-digital converter designed for implementing advanced capacitive sensing solutions. This device is part of the FDC2x1x family, which employs an innovative narrow-band architecture to offer high rejection of out-of-band noise and provide high resolution at high speeds. The FDC2212DNTT is optimized for high resolution, reaching up to 28 bits, making it suitable for applications requiring precise capacitance measurements.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 2 | |
| Resolution | Up to 28 bits | |
| Maximum Output Rate (one active channel) | 4.08 kSPS | |
| Maximum Input Capacitance | 250 nF (at 10 kHz with 1 mH inductor) | |
| Sensor Excitation Frequency | 10 kHz to 10 MHz | |
| Supply Voltage | 2.7 V to 3.6 V | V |
| Active Power Consumption | 2.1 mA | mA |
| Sleep Mode Power Consumption | 35 µA | µA |
| Shutdown Power Consumption | 200 nA | nA |
| Interface | I2C | |
| Temperature Range | –40°C to +125°C | °C |
Key Features
- High Resolution: Up to 28 bits, providing precise capacitance measurements.
- EMI-Resistant Architecture: Offers high rejection of out-of-band noise, ensuring reliable operation in noisy environments.
- Wide Excitation Frequency Range: Supports frequencies from 10 kHz to 10 MHz, offering flexibility in system design.
- Low Power Consumption: Active mode: 2.1 mA, Sleep mode: 35 µA, Shutdown mode: 200 nA.
- I2C Interface: Facilitates easy communication and integration with other components.
- High Maximum Input Capacitance: 250 nF, allowing for the use of remote sensors and tracking environmental changes.
Applications
- Proximity Sensing: Ideal for detecting the presence or absence of objects.
- Liquid Level Sensing: Suitable for sensing levels of various liquids, including conductive and non-conductive liquids.
- Environmental Monitoring: Can track changes in temperature and humidity over time.
- Automotive Applications: AEC-Q100 qualified, making it suitable for use in automotive systems.
Q & A
- What is the resolution of the FDC2212DNTT?
The FDC2212DNTT has a resolution of up to 28 bits.
- What is the maximum output rate of the FDC2212DNTT?
The maximum output rate for one active channel is 4.08 kSPS.
- What is the maximum input capacitance supported by the FDC2212DNTT?
The maximum input capacitance is 250 nF at 10 kHz with a 1 mH inductor.
- What is the operating temperature range of the FDC2212DNTT?
The operating temperature range is –40°C to +125°C.
- What interface does the FDC2212DNTT use for communication?
The device uses an I2C interface for communication.
- What are the power consumption modes of the FDC2212DNTT?
The device has active mode (2.1 mA), sleep mode (35 µA), and shutdown mode (200 nA).
- Is the FDC2212DNTT suitable for automotive applications?
Yes, it is AEC-Q100 qualified, making it suitable for automotive applications.
- What is the sensor excitation frequency range of the FDC2212DNTT?
The sensor excitation frequency range is from 10 kHz to 10 MHz.
- How many channels does the FDC2212DNTT have?
The FDC2212DNTT has 2 channels.
- What is the supply voltage range for the FDC2212DNTT?
The supply voltage range is from 2.7 V to 3.6 V.
