Texas Instruments has introduced a capacitive sensing IC family that is immune to environmental noise from sources such as radios, power supplies, lights and motors. The FDC2214 family offers 60 times better performance in the presence of noise than existing capacitive-sensing solutions, enabling low-cost capacitive-based human body and object sensing in any environment.
The new devices bring the benefits of capacitive sensing to applications that previously relied on other sensing technologies, enabling engineers to deliver noise-immune solutions that offer improved aesthetics, lower system cost and better reliability in automotive, consumer and industrial applications.
The FDC2214 family's unique narrow-band architecture eliminates unwanted noise and common environmental interferences, bringing the benefits of capacitive sensing to today's real-world sensing applications, including display wakeup on devices such as appliances, automotive displays, thermostats and consumer electronics to reduce power consumption. The FDC2214 ICs also enable capacitive sensing for automatic doors or gates that avoid collisions by sensing nearby objects or humans. In addition, designers can use the FDC2214 ICs to detect the wave of a hand to activate a soap dispenser, change a car radio station for safer driving and more.
Key features and benefits of the FDC2214 capacitive-sensing family:
The FDC2214 family offers a broad range of tools to ease design, including a TI Designs reference design for a noise-immune capacitive proximity sensor system.The FDC2214EVM and FDC2114EVM evaluation modules enable designers to quickly and easily evaluate the device's accuracy. Each is available for a suggested retail price of $29.
Each device in the FDC2214 family measures 4x4mm and is easily configured via its I2C interface. Available in QFN-16 and WSON-12 packages, pricing in 1,000 unit quantities starts at $2.38.