Firmware
LDC3114-Q1
Automotive 4-channel inductance-to-digital converter for low-power proximity & touch-button sensing
Data sheet
LDC3114-Q1
- AEC-Q100 qualified with the following results:
- Device temperature grade 1: –40°C to +125°C ambient operating temperature
- Device HBM ESD classification level 2
- Device CDM ESD classification level C4B
- Functional Safety-Capable
- Multiple modes of operation:
- Raw data mode: access pre-processed inductance measurement data to enable advanced algorithms on MCU for linear sensing
- Button mode: button press detection with baseline tracking and advanced on-chip post processing
- Force level measurement of touch buttons
- Pin and register compatible to LDC2114
- Robust EMI performance allows for CISPR 22 and CISPR 24 compliance
- Four independent channel operation
- Configurable scan rates:
- 0.625 SPS to 160 SPS
- Continuous scanning option
- Advanced button press detection algorithms:
- Adjustable force threshold per button
- Environmental shift compensation
- Simultaneous button press detection
- Low current consumption:
- One button: 6 µA at 0.625 SPS
- Two buttons: 72 µA at 20 SPS
- Interface:
- 1.8-V and 3.3-V compliant I2C and INTB
- 1.8-V logic output per channel for buttons
The LDC3114-Q1 is an inductive sensing device that enables touch button design for human machine interface (HMI) on a wide variety of materials by measuring small deflections of conductive targets using a coil that can be implemented on a small printed circuit board (PCB) located behind the panel. This technology can be used for precise linear position sensing of metal targets for automotive, consumer and industrial applications by allowing access to the raw data representing the inductance value. Inductive sensing solution is insensitive to humidity or non-conductive contaminants such as oil and dirt.
The button mode of LDC3114-Q1 is able to automatically correct for any deformation in the conductive targets. The LDC3114-Q1 offers well-matched channels, which allow for differential and ratiometric measurements which enable compensation of environmental and aging conditions such as temperature and mechanical drift. The LDC3114-Q1 includes an ultra-low power mode intended for power on/off buttons or position sensors in battery powered applications.
The LDC3114-Q1 is easily configured through an I2C interface. The LDC3114-Q1 is available in a 16-pin TSSOP package.
Technical documentation
No results found. Please clear your search and try again.
View all 24 Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
BOOST-LDC3114EVM — LDC3114 evaluation module for inductive sensing
This EVM (evaluation module) is an easy-to-use platform for evaluating the main features and performance of the LDC3114. The EVM includes a graphical user interface (GUI) used to read and write registers as well as view and save measurement results. Also included is an integrated coil that can (...)
Evaluation board
LDC-HALL-HMI-EVM — Evaluation module for inductive touch and magnetic dial contactless user-interface design
This evaluation module (EVM) uses inductive and Hall-effect sensing technologies to provide a human-machine interface. The inductive sensing devices create eight different touch buttons on a seamless surface while the Hall-effect sensor is used to create a magnetic dial that can rotate and be used (...)
Firmware
LDC3114-MSPM0L1306-CODE-EXAMPLE — Example code for the BOOST-LDC3114EVM connected to the LP-MSPM0L1306
Example code for using the BOOST-LDC3114EVM with the LP-MSPM0L1306
Supported products & hardware
Products
Inductive sensor AFEs
Arm Cortex-M0+ MCUs
Hardware development
Evaluation board
Calculation tool
LDC-CALCULATOR-TOOLS — Inductive Sensing Design Calculator Tool
The inductive sensing calculator tools provide two Excel spreadsheets to assist in the design process for inductive-to-digital converter (LDC) devices. These tools provide coil design assistance as well as some device-specific configurations.
Supported products & hardware
Products
Inductive sensor AFEs
Hardware development
Evaluation board
Reference designs
TIDA-060039 — Inductive touch and magnetic dial contactless user-interface reference design
This reference design uses inductive and Hall-effect sensing technologies to provide a human-machine interface. The inductive sensing devices create eight different touch buttons on a seamless surface while the Hall-effect sensor is used to create a magnetic dial that can rotate and be used as an (...)
Design guide: PDF
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| TSSOP (PW) | 16 | Ultra Librarian |
Ordering & quality
Information included:
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Information included:
- Fab location
- Assembly location
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.