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Microchip Technology Inc. announces a stand-alone, analog front end (AFE) for smart, low frequency (125 kHz typical) wireless authentication applications. The MCP2030 device is a 3-channel transponder AFE that provides programmable antenna tuning and adjustable modulation depth that runs as low as 8%. The MCP2030 AFE is appropriate for passive-keyless-entry, tire pressure monitoring systems (TPMS), data acquisition and other wireless authentication applications. In addition to its good modulation depth, the MCP2030 AFE offers adjustable, high input sensitivity of 3 mVpp typical. Its 3-input channel architecture enables 3-axis reception for improved performance independent of range, antenna orientation and environmental noise. Each channel is equipped with selectable tuning capacitors up to 63 pF in 1 pF steps to allow firmware-driven antenna tuning that improves signal matching without expensive hand tuning. With these features, the device enables designers to create highly intelligent transponders. The MCP2030 AFE communicates with a microcontroller over an SPI bus, and its features are controllable by the external microcontroller, depending upon field application.

Microchip Technology Inc.