Product Description
The RF3404 is a fully-functional, integrated dual-band downconverter module for tri-mode CDMA applications. The module, which uses SiGe technology, features two complete RF downconverters with low noise amplifiers, RF SAW filters, TX LO buffers, and RF matching for PCS and cellular band frequencies. Additionally, a divide-by-2 prescaler is integrated to allow the use of a single-band VCO. Multiple gain control options are available to conserve current and meet IS-98B specifications. The mixer design allows for a common IF filter for CDMA cellular and PCS operation, and a second output for the FM output. IF matching is external to the module.

Features
• Complete Dual-Band Receiver Front End
• Integrated RF SAW Filters
• Internal RF Matching and Bias Settings
• Stepped LNA/Mixer Gain Control
• Adjustable LNA Bias Current and IIP3
• Meets IS-98B Specifications

Typical Applications
• CDMA Cellular/PCS Handsets