4-Ch, 12-bit, general purpose inductance to digital converter
Product details
Parameters
Package | Pins | Size
Features
- 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
- 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
All trademarks are the property of their respective owners.
Description
The LDC1312 and LDC1314 are 2- and 4-channel, 12-bit inductance to digital converters (LDCs) for inductive sensing solutions. With multiple channels and support for remote sensing, the LDC1312 and LDC1314 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 LDC1312 and LDC1314 offer well-matched channels, which allow for differential and ratiometric measurements. This enables 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 on existing sensing solutions and to introduce brand new sensing capabilities to products in all markets, especially consumer and industrial applications. Inductive sensing offers better performance, reliability, and flexibility than competitive sensing technologies at lower system cost and power.
The LDC1312 and LDC1314 are easily configured via an I2C interface. The two-channel LDC1312 is available in a WSON-12 package and the four-channel LDC1314 is available in a WQFN-16 package.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- Absolute angle sensing with 1 degree accuracy with 0.1 degree resolution
- No magnets used and not affected by DC magnetic fields
- Maximum speed of 200 RPM
Description
Features
- Multiple board perforations provide maximum evaluation and system design flexibility
- Includes example sensor coils for the different channels
- Accompanying GUI for quick concept demonstration and data capture
- EVM does not require additional components for operation, enabling rapid device evaluation
Description
Features
- Contactless buttons, with superior reliability over electrical/mechanical contact solutions
- Can be easily used to implement ruggedized, environmentally sealed keypad and keyboard solutions for harsh environments
- Supports simultaneous button presses
- Temperature stable
- Easily scalable to larger key arrays (...)
Description
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 (...)
Features
- 19 different types of coils
- Perforated edges to separate and use remotely
- Smaller coils have extra pads for a series inductor
Software development
Design tools & simulation
Reference designs
Design files
This reference design uses the LDC1314. This reference design can also be (...)
Design files
-
download TIDA-00509 BOM (Keypad).pdf (31KB) -
download TIDA-00509 BOM (MCU).pdf (207KB) -
download TIDA-00509 Assembly Drawing (Keypad).pdf (74KB) -
download TIDA-00509 Assembly Drawing (MCU).pdf (293KB) -
download TIDA-00509 PCB (Keypad).pdf (326KB) -
download TIDA-00509 PCB (MCU).pdf (275KB) -
download TIDA-00509 CAD Files (Keypad).zip (220KB) -
download TIDA-00509 CAD Files (MCU).zip (138KB) -
download TIDA-00509 Gerber (Keypad).zip (77KB) -
download TIDA-00509 Gerber (MCU).zip (109KB)
Design files
-
download TIDA-00615 BOM.pdf (214KB) -
download TIDA-00615 Assembly Drawing.pdf (175KB) -
download TIDA-00615 PCB.pdf (1406KB) -
download TIDA-00615 CAD Files.zip (867KB) -
download TIDA-00615 Gerber.zip (3208KB)
This reference design uses the LDC1314. (...)
Design files
-
download TIDA-00508 BOM (Coil).pdf (41KB) -
download TIDA-00508 BOM (MCU).pdf (43KB) -
download TIDA-00508 Assembly Drawing (Coil).pdf (128KB) -
download TIDA-00508 Assembly Drawing (Disc).pdf (299KB) -
download TIDA-00508 Assembly Drawing (MCU).pdf (295KB) -
download TIDA-00508 PCB (Coil).pdf (280KB) -
download TIDA-00508 PCB (Disc).pdf (287KB) -
download TIDA-00508 PCB (MCU).pdf (275KB) -
download TIDA-00508 Target Shape Calculator.zip (26KB) -
download TIDA-00508 CAD Files (Coil).zip (160KB) -
download TIDA-00508 CAD Files (Disc).zip (74KB) -
download TIDA-00508 CAD Files (MCU).zip (138KB) -
download TIDA-00508 Gerber (Coil).zip (114KB) -
download TIDA-00508 Gerber (Disc).zip (511KB) -
download TIDA-00508 Gerber (MCU).zip (109KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
WQFN (RGH) | 16 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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.