Microchip Technology has introduced the ATFCD52 high-speed capacitance digitizer, designed to support advanced tactile sensing in robotic systems. The device converts signals from fine-grid, two-dimensional capacitive sensor arrays into high-sensitivity digital data, enabling robotic grippers and humanoid hands to detect contact, calculate forces and respond to changes in grip in real time.
As robots increasingly handle soft, fragile and irregular objects, tactile sensing is becoming essential alongside vision-based systems. While cameras help identify and locate objects, touch-based feedback enables robots to determine how firmly an object is held and detect the early stages of slipping. Data from the ATFCD52 can be processed by an external processor to calculate normal and shear forces, supporting more precise manipulation.
“Robots have become increasingly capable of seeing and understanding their surroundings, but the ability to feel and respond to physical contact remains a critical challenge,” said Giovanni Fontana, Senior Director, Human Machine Interface Division, Microchip Technology. “The ATFCD52 is designed to deliver the real-time tactile data that serves as a foundation for the development of more dexterous robots and the advancement of physical AI.”
The ATFCD52 supports up to 52 channels, with up to 32 transmit (TX) by 20 receive (RX) lines, allowing dense sensor arrays to capture tactile information across a contact surface. Its 20 parallel on-chip analogue front ends simultaneously acquire all receive lines, enabling frame rates of up to 800 Hz, depending on sensor array size. This high-speed acquisition helps robotic systems identify the onset of slippage and adjust grip before an object is dropped or damaged.
The device can resolve capacitance changes below 1 femtofarad (fF), providing the sensitivity required to detect subtle sensor deformation, including light touch. Frequency hopping and oversampling help mitigate electrical interference from servo motors, power electronics and switching regulators, supporting reliable operation in electrically noisy environments.
For system integration, the ATFCD52 can be paired with Microchip microcontrollers (MCUs), microprocessors (MPUs) or field-programmable gate arrays (FPGAs), depending on application requirements. Beyond robotics, potential applications include augmented reality and gaming accessories, data-collecting gloves, foot mats and wearable sensing technologies such as electronic skin.
The ATFCD52 is supported by the EV-ATFCD52 development board, which enables evaluation of capacitive sensor designs, tactile sensor materials and stack-ups. The ATFCD52 Configurator software provides parameter configuration and real-time data logging to support product evaluation and design-in.
Microchip Technology is widely recognized for its semiconductor, embedded systems, and timing solutions used across automotive, industrial, aerospace, communications, and consumer electronics applications. Through ongoing innovation in frequency control and precision timing technologies, the company aims to support next-generation electronic systems that demand higher performance, lower power consumption, and improved operational resilience.
