Technical Insight
Integrated CDMA module from RFMD (New Devices)
Greensboro, NC. RFMD s new RF3404 product is a fully integrated, dual-band tri-mode receive module incorporating LNAs, SAW filters and mixers for CDMA handset and PDA applications. The device is based on SiGe and employs two RF SAW filters and integrated passive components. This reduces the component count in the dual-band receive portion from 25 external components to just three. RFMD s module contains the receive chains for both the cellular and PCS bands. Each chain contains an LNA, RF image SAW filter, mixer preamplifier, mixer, LO input amplifiers and LO transmit VCO buffer amplifier, integrated into a land grid array laminate module package measuring 8 8 mm. The cellular band exhibits a gain of 25 dB, with a typical noise figure of 2.0 dB, and the PCS band gain is typically 25 dB with a noise figure of 2.2 dB. At both frequencies, the IP3 point is 9 dBm. Both components and fully assembled engineering evaluation boards are currently available from the company (see ). www.rfmd.com
