RF transceiver IC for automotive key fob and body control

NXP Semiconductors has designed a MCU integrated RF transceiver IC to receive free UHF signals in parallel at once. This IC is designed for use in automotive use as key fob and body control module type applications which includes keyless entry, Remote Start, Tire Pressure Monitoring Systems (TPMS) and Wireless Diagnostics (WD). The chip NCK2983 can poll for signals in one go rather than doing it sequentially. This results in saving of power consumption and make it robust. The chip need to be awake for quite a shorter time compared to other chips which polls for signal sequentially. The NCK2983 uses software defined radio concept based wideband digital IF approach. The low-noise RF front end feeds mixed signal data to high-speed Sigma-Delta ADC which are connected to receive channels of DSP . Each channel can be configured independently, mixing down the signal to baseband according to the specific channel frequency, and applying relevant channel filter, demodulation and clock recovery settings. The fractional N-based frequency synthesiser in NCK2983 supports the chip to operate in ISM bands and supports carrier frequency hopping at each of the three baseband channels. The NCK2983 also includes an embedded microcontroller system with 32 kB EROM (FLASH) allowing complete applications to be implemented as single-chip solutions. The transceiver supports special power mo...