The RF2938 is a monolithic integrated circuit specifically designed for direct-sequence spread-spectrum systems operating in the 2.4GHz ISM band. The part includes a direct conversion from IF receiver, quadrature demodulator, I/Q baseband amplifiers with gain control and RSSI, on-chip programmable baseband filters, dual data comparators. For the transmit side, a QPSK modulator and upconverter |