RF3404

Preliminary RF3404 DUAL-BAND/TRI-MODE CDMA LOW NOISE AMPLIFIER/MIXER MODULE 8 Typical Applications CDMA Cellular/PCS Handsets Product Description CDMAIF+ 0.5 VCC1 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. 0.6 22 21 BAND SEL VCC4 15 CDMAIF- 23 FM IF+ 44 IF SEL 43 39 14 38 FM IFIP SET PCS LNA IN 1.0 12 DIV ENABLE CELL LNA IN 11 LO IN VCC3 48 ENABLE TX BUFFER ENABLE LNA GAIN 35 28 PCS LO OUT 29 CELL LO OUT 30 MIXER GAIN 34 9 VCC2 1 8 0.1 8 FRONT-ENDS 8.00 sq. NOTE: Shaded area represents Pin 1. Note orientation of Pin 1. Optimum Technology Matching® Applied Si BJT Si Bi-CMOS Package Style: 8mmx8mm Module üSiGe HBT High Band RF SAW Filter GaAs HBT GaAs MESFET Si CMOS Features Complete Dual-Band Receiver Front End Integrated RF SAW Filters Internal RF Matching and Bias Settings Stepped LNA/Mixer Gain Control 24 FM IF+ 1960 MHz LNA PCS LN...