Texas Instruments introduce the industry’s first inductance-to-digital converter, the LDC1000. Inductance-to-digital conversion is a new data converter category that uses coils and springs as inductive sensors to deliver higher resolution, increased reliability, and greater flexibility than existing sensing solutions at a lower system cost.
Inductive sensing is a contactless sensing technology that can be used to measure the position, motion, or composition of a metal or conductive target, as well as detect the compression, extension or twist of a spring.
Applications for inductive sensing range from simple push buttons, knobs, and on/off switches to high-resolution heart rate monitors,turbine flow meters, and high-speed motor/gear controllers. Given their versatility, LDCs can be used in many different markets, including automotive, white goods, consumer electronics, mobile devices, computing, industrial, and medical.
Dave Heacock, senior vice president of TI Silicon Valley Analog, commented: “LDC technology enables engineers to create sensors using low-cost and readily available PCB traces or metal springs. LDCs provide high-resolution sensing of any metal or conductor – including the human body. LDCs provide system designers with a new platform for developing breakthrough solutions to difficult system problems. We can’t wait to see what they come up with.”
Key benefits of LDC technology:
Tools and support
The LDC1000EVM, which includes an MSP430F5528 microcontroller, is available to evaluate the device and can be purchased today for US$29.00. System designers can create a custom sensor coil and configure the LDC in seconds with TI’s new WEBENCH Inductive Sensing Designer. The online tool simplifies the sensor coil design process and provides configuration settings for the LDC based on the coil’s characteristics, application requirements and system performance needs. The optimized design can be easily exported to a variety of popular CAD programs, to quickly incorporate the sensor coil into the overall system design.
Package, availability and pricing
The LDC1000 is available to order today in a 16-pin, 4-mm by 5-mm SON package for US$2.95 in 1,000-unit quantities. An automotive-qualified version will be available the first half of 2014.