Microchip Technology introduced the MCP2036 Analog Front End (AFE) for inductive touch-sensing applications. The MCP2036 AFE works with most 8-, 16- or 32-bit PIC microcontroller (MCU) or dsPIC Digital Signal Controller (DSC), making it even easier and more cost effective for designers to enhance user interfaces with inductive touch-sensing technology. The inductive-touch AFE features a multiplexer, a frequency mixer, an amplifier, a driver, and a voltage reference, which drastically lowers component count, and reduces design size and cost.
The MCP2036 AFE is ideal for applications in the appliance, industrial, and automotive markets. The MCP2036 is available in a 16-pin, 4 mm x 4 mm QFN package, as well as 14-pin PDIP and SOIC packages. The device is priced starting at $0.33 each, in 10,000-unit quantities.
Microchip MCP2036 Analog Front End
- Complete Inductance Measurement System:
- Low-Impedance Current Driver
- Sensor/Reference Coil Multiplexer
- High-Frequency Detector
- Operating Voltage: 2.7 to 5.5V
- Low-Power Standby Mode
- Gain and Frequency set by external passive components
- Available in 14-pin PDIP, SOIC and 16-pin QFN packages
- High-frequency, current-mode coil driver for exciting the sensor coil
- Synchronous detector for converting AC sense voltages into DC levels
- Output amplifier/filter to improve resolution and limit noise
- Virtual ground reference generator for single supply operation
More info: Microchip MCP2036 AFE (pdf)