TI Korea (CEO Kent Chon, www.ti.com/kr) April 30, 2015 – TI (CEO Kent Chon) announced the launch of the world's first multi-channel inductance-to-digital converter (LDC). These four new devices in the LDC1614 family, first introduced by TI in 2013, expand the innovative LDC portfolio into the data converter category. These devices are configured with two or four channels and provide up to 28-bit resolution on a single integrated circuit (IC). (For more details on the new LDCs and complete design data, please refer to www.ti.com/kr-sensing)

The combination of precision and multi-channel capabilities enables developers to design systems more easily and design high dynamic range position and motion detection solutions at reduced costs. Unlike other technologies, LDC inductive sensors can be placed away from ICs and utilize low-cost, highly reliable inductors. With the LDC1614 family, which integrates up to four channels into a single IC, developers can deploy sensors throughout the system and control them centrally with significantly fewer printed circuit boards (PCBs). Leveraging these advantages, developers can utilize these new products to precisely detect linear or rotational motion and detect metal in various finished products, including white goods, printers, cameras, and automotive infotainment consoles.

Features and Benefits of the LDC1614 Product Family

· Multi-channel for any use: Differential and ratio measurement methods allow for simple compensation of environmental and aging conditions such as temperature, humidity, and mechanized tunneling.

· Precise measurement function: With up to 28-bit resolution, it can detect changes in sub-micron units from a distance.

· Wide sensor frequency range: Supports frequencies from 1 kHz to 10 MHz, allowing for designs using various types of inductors as sensors. Additionally, due to the wide frequency range, it can be used on very small PCB coils, which can reduce the cost and size of the overall sensor solution.

· Low system power: The LDC1614 family, using a 3.3V supply power, consumes only about 6.9mW of power during standard operation and only 0.12mW when idle.

· High Reliability: Supports non-contact detection capabilities with strong immunity to non-inductive contaminants, such as oil, dirt, and dust, which shorten equipment lifespan.

Tools and support for a quick design start

The LDC1614EVM, which includes the ultra-low power MSP430F5528 microcontroller (MCU), allows you to evaluate the LDC1614 and is currently available for purchase at the TI store for $29. System designers can now build sensors in just minutes using TI's WEBENCH® Inductive Sensing Designer.

This online tool simplifies the design of condition-based sensor coils required by applications and systems. This optimized design can be more easily exported to various CAD (Computer-aided Design) programs, and sensor coils can be quickly integrated into the overall system layout.

The 16-button keypad reference design (TIDA-00509) utilizes the LDC1314 in a composite inductive keypad system and can be easily expanded to a 64-button configuration. This reference design employs stainless steel for the buttons, snap-on dome keys, and low-cost technology options. The contactless solution allows for simultaneous button presses and supports a design that is much more robust and reliable than mechanical keypad solutions. Other inductive sensor reference designs can be found in the TI Designs Reference Design Library.

Package, supply and price

Each device in the LDC1614 family measures in 4mm x 4mm increments and can be easily configured via an I2C interface. The price and package for each device are as follows.

 

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LDC1612

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12bit

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3.5 dollars

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1,000 pieces   quantity   standard   price