Firmware
Data sheet
LDC1614
- Easy-to-Use – Minimal Configuration Required
- Up to 4 Channels With Matched Sensor Drive
- Multiple Channels Support Environmental and Aging Compensation
- Remote Sensor Position of >20 cm Supports Operation In Harsh Environments
- Pin-Compatible Medium and High-Resolution Options:
- LDC1312/4: 2/4-ch 12-Bit LDC
- LDC1612/4: 2/4-ch 28-Bit LDC
- Sensing Range Beyond Two Coil Diameters
- Supports Wide Sensor Frequency Range of 1 kHz to 10 MHz
- Power Consumption:
- 35 µA Low Power Sleep Mode
- 200 nA Shutdown Mode
- 2.7 V to 3.6 V Operation
- Multiple Reference Clocking Options:
- Included Internal Clock For Lower System Cost
- Support for 40 MHz External Clock For Higher System performance
- Immunity to DC Magnetic Fields and Magnets
The LDC1612 and LDC1614 are 2- and 4-channel, 28-bit inductance to digital converters (LDCs) for inductive sensing solutions. With multiple channels and support for remote sensing, the LDC1612 and LDC1614 enable the performance and reliability benefits of inductive sensing to be realized at minimal cost and power. The products are easy to use, only requiring that the sensor frequency be within 1 kHz and 10 MHz to begin sensing. The wide 1 kHz to 10 MHz sensor frequency range also enables use of very small PCB coils, further reducing sensing solution cost and size.
The high resolution channels allow for a much larger sensing range, maintaining good performance beyond two coil diameters. Well-matched channels allow for differential and ratiometric measurements, which enable designers to use one channel to compensate their sensing for environmental and aging conditions such as temperature, humidity, and mechanical drift.
Given their ease of use, low power, and low system cost these products enable designers to greatly improve performance, reliability, and flexibility over existing sensing solutions and to introduce brand new sensing capabilities to products in all markets, especially consumer and industrial applications.
These devices are easily configured via an I2C interface. The two-channel LDC1612 is available in a WSON-12 package and the four-channel LDC1614 is available in a WQFN-16 package.
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Technical documentation
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View all 29 Design & development
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Evaluation board
LDC1614EVM — LDC1614 Evaluation Module for Inductance to Digital Converter with Sample PCB Coils
The LDC1614 evaluation module demonstrates inductive sensing technology for sensing and measuring the presence of a conductive target. The evaluation module includes two example PCB sensor coils that connect to the four channels of the LDC1614, and an MSP430 microcontroller is used to interface the (...)
User guide: PDF
Evaluation board
LDCCOILEVM — Reference Coil Board Evaluation Module
The LDCCOILEVM is designed to provide maximum flexibility for system prototyping and allow for experimentation with different coil sizes. It includes 19 unique types of PCB coils that range from long rectangular asymmetric coils to small circular coils 3mm in diameter. Every coil is separated by (...)
User guide: PDF
GUI for evaluation module (EVM)
SNOC028 — Sensing Solutions EVM GUI Tool v1.10.0
Supported products & hardware
Products
Humidity sensors
- HDC1000 — Low Power, 3% Accuracy Digital Humidity Sensor with Integrated Temperature Sensor
- HDC1050 — ±3% low-power, digital humidity sensor with temperature sensor
- HDC2010 — 2% RH ultra-small, low-power digital relative humidity sensor
- HDC2080 — 2% RH ultra-low-power digital relative humidity sensor, interrupt/DRDY
Inductive sensor AFEs
- LDC1001-Q1 — Automotive, 5V, grade-0, Inductance to Digital Converter
- LDC1041 — 1-Ch, 5V, 24-bit L, 8-bit Rp, inductance to digital converter
- LDC1051 — 1-Ch, 5V, 8-bit Rp, inductance to digital converter
- LDC1101 — 1-Ch, 1.8V, 24-bit L, 16-bit Rp, inductance to digital converter for high speed applications
- LDC1312 — 2-Ch, 12-bit, general purpose inductance to digital converter
- LDC1312-Q1 — 2-Ch, 12-bit, general purpose automotive inductance to digital converter
- LDC1314 — 4-Ch, 12-bit, general purpose inductance to digital converter
- LDC1314-Q1 — 4-Ch, 12-bit, general purpose automotive inductance to digital converter
- LDC1612 — 2-Ch, 28-bit, high-resolution Inductance to digital converter
- LDC1612-Q1 — 2-Ch, 28-bit, high-resolution automotive inductance to digital converter
- LDC1614 — 4-Ch, 28-bit, high-resolution Inductance to digital converter
- LDC1614-Q1 — 4-Ch, 28-bit, high-resolution automotive inductance to digital converter
- LDC2112 — 2-Ch inductance to digital converter with baseline tracking for low power touch buttons
- LDC2114 — 4-Ch inductance to digital converter with baseline tracking for low power touch buttons
Signal conditioners
- FDC1004 — 4-channel 16-bit capacitance-to-digital converter with active shield driver for EMC protection
- FDC1004-Q1 — Automotive, 4-channel 16-bit capacitance-to-digital converter with active shield driver for EMC
- FDC2112 — 2-Ch, 12-bit, capacitance to digital converter
- FDC2112-Q1 — 2-Ch, 12-bit, automotive capacitance to digital converter
- FDC2114 — 4-Ch, 12-bit, capacitance to digital converter
- FDC2114-Q1 — 4-Ch, 12-bit, automotive capacitance to digital converter
- FDC2212 — 2-Ch, 28-bit, capacitance to digital converter
- FDC2212-Q1 — 2-Ch, 28-bit, automotive capacitance to digital converter
- FDC2214 — 4-Ch, 28-bit, capacitance to digital converter
- FDC2214-Q1 — 4-Ch, 28-bit, automotive capacitance to digital converter
Hardware development
Evaluation board
- FDC1004EVM — FDC1004EVM - 4 Channel Capacitive to Digital Converter Evaluation Module
- FDC1004QEVM — Automotive 4-Channel Capacitive to Digital Converter Evaluation Module
- FDC2114EVM — FDC2114 with Two Capacitive Sensors Evaluation Module
- FDC2214EVM — FDC2214 with Two Capacitive Sensors Evaluation Module
- HDC1010EVM — HDC1010 Low Power Humidity and Temperature Sensor Evaluation Module
- HDC1080EVM — HDC1080 low-power humidity and temperature sensor evaluation module
- HDC2010EVM — HDC2010 Low Power Humidity and Temperature Sensor Evaluation Module
- HDC2080EVM — HDC2080 Low Power Humidity and Temperature Sensor Evaluation Module
- LDC1000EVM — LDC1000EVM - Evaluation Module for Inductance to Digital Converter with Sample PCB Coil
- LDC1312EVM — LDC1312 Evaluation Module for Inductance to Digital Converter with Sample PCB Coils
- LDC1314EVM — LDC1314 Evaluation Module for Inductance to Digital Converter with Sample PCB Coils
- LDC1612EVM — LDC1612 Evaluation Module for Inductance to Digital Converter with Sample PCB Coils
- LDC1614EVM — LDC1614 Evaluation Module for Inductance to Digital Converter with Sample PCB Coils
- LDC2114EVM — LDC2114 1.8V 4-Channel Inductive Touch Evaluation Module
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
- LDC0851 — Differential inductive switch for MCU-less applications
- LDC1041 — 1-Ch, 5V, 24-bit L, 8-bit Rp, inductance to digital converter
- LDC1051 — 1-Ch, 5V, 8-bit Rp, inductance to digital converter
- LDC1101 — 1-Ch, 1.8V, 24-bit L, 16-bit Rp, inductance to digital converter for high speed applications
- LDC1312 — 2-Ch, 12-bit, general purpose inductance to digital converter
- LDC1312-Q1 — 2-Ch, 12-bit, general purpose automotive inductance to digital converter
- LDC1314 — 4-Ch, 12-bit, general purpose inductance to digital converter
- LDC1314-Q1 — 4-Ch, 12-bit, general purpose automotive inductance to digital converter
- LDC1612 — 2-Ch, 28-bit, high-resolution Inductance to digital converter
- LDC1612-Q1 — 2-Ch, 28-bit, high-resolution automotive inductance to digital converter
- LDC1614 — 4-Ch, 28-bit, high-resolution Inductance to digital converter
- LDC1614-Q1 — 4-Ch, 28-bit, high-resolution automotive inductance to digital converter
- LDC2112 — 2-Ch inductance to digital converter with baseline tracking for low power touch buttons
- LDC2114 — 4-Ch inductance to digital converter with baseline tracking for low power touch buttons
- LDC3114 — 4-channel inductance-to-digital converter for low-power proximity and touch-button sensing
- LDC3114-Q1 — Automotive 4-channel inductance-to-digital converter for low-power proximity & touch-button sensing
Hardware development
Evaluation board
- LDC0851EVM — LDC0851EVM - High Accuracy Inductive Switch with Stacked Coils Evaluation Module
- LDC1614EVM — LDC1614 Evaluation Module for Inductance to Digital Converter with Sample PCB Coils
Reference designs
TIDA-00508 — 1-Degree Dial Reference Design Using the LDC1314 Inductance-to-Digital Converter
The LDC1314's unique inductive sensing capability is used to implement a contactless rotational position sensing solution that is accurate to 1 degree. It uses standard PCB technology and easily manufactured components to implement a low cost solution.
This reference design uses the LDC1314. (...)
Reference designs
TIDA-00314 — Touch on Metal Buttons With Integrated Haptic Feedback Reference Design
This reference design uses our inductance-to-digital converter technology to provide a high-precision method to sense button presses on a metal surface and our haptic drivers provide high-quality haptics feedback to the user. TIDA-00314 demonstrates techniques for system design, environmental (...)
Reference designs
TIDA-00509 — 16-button Inductive Keypad Reference Design Using the LDC1314 Inductance-to-Digital Converter
The LDC1314's unique inductive sensing capability is used to implement a contactless, 16 button, multi-function keypad. It uses standard PCB technology and easily manufactured components to implement a low cost solution.
This reference design uses the LDC1314. This reference design can also be (...)
Reference designs
TIDA-01102 — Inductive Touch Stainless Steel Keypad Reference Design for Waterproof/Noise Immune HMI Applications
This 16-button stainless steel keypad, which utilizes TI's inductive touch technology, demonstrates highly sensitive buttons on a single piece of 0.6mm thick stainless steel metal. The design utilizes a MUXed approach to implement many buttons with a single LDC1614. The design is (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| WQFN (RGH) | 16 | Ultra Librarian |
Ordering & quality
Information included:
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- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Information included:
- Fab location
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