A reference design is for a touch-based metallic button which makes use of an inductance-to-digital converter expertise to offer high-precision sense button presses on a metallic floor.
Current-day automobiles have numerous buttons as a result of right this moment’s automobiles come filled with many options together with an infotainment system which requires person feedbacks via contact or mechanical controls. However over time mechanical controls are susceptible to failure and a contact sensor with none sound or vibrational suggestions would possibly lead to flawed or no inputs making it much less interesting.
So, Texas Devices have launched a contact on metallic buttons with an built-in haptic suggestions reference design named TIDA-00314. This reference design makes use of TI’s inductance-to-digital converter expertise to offer a high-precision technique to sense button presses on a metallic floor and the corporate’s haptic drivers present high-quality haptic suggestions to the person. TIDA-00314 demonstrates methods for system design, environmental compensation and electromagnetic interference safety.
These inductance-based contact buttons supply a really high-resolution and have a programmable drive contact button sensitivity. These reference design contact buttons may be positioned underwater and in harsh environments and may work with gloves on. The TIDA-00314 can substitute mechanical buttons with high-resolution inductive-sensing-based touch-on-metal detection and permits for customizable haptic suggestions and waveforms to offer a high-quality person expertise. The reference design doesn’t require any particular form for buttons, so a single steady sheet of metallic is sealed and grounded in opposition to electromagnetic interference (EMI), water, oil, dust and different contaminants. The reference design may also be used for strain and multi-step button press sequences. The reference design is appropriate to be used in cars, properties, and even in harsh environments akin to factories the place excessive temperatures, vibration, dust and dirt can lower the lifetime of mechanical buttons.
The reference design has been examined by TI. To simplify the designing course of, TI has offered the entire set of Design Assets together with schematics, invoice of supplies, PCB structure, and check recordsdata, which may be downloaded from right here.