An integrated silicon bipolar receiver subsystem for 900 MHz ISM band applications

A wide band dual conversion receiver subsystem is presented which is suitable for 900 MHz portable wireless applications including cordless telephone. The circuit features 118 dB of dynamic range and is operable from 6.5 V down through 2.7 V while consuming 28 mA. The receiver utilizes the MOSAIC/sup TM/ V RF silicon bipolar process and features an LNA, two mixers, two oscillators, second LO amplifier, dual modulus prescaler, IF amplifier, RSSI, coilless demodulator and power down control.