Conexant Delivers RF Chipsets for 2G and 3G CDMA Applications

The CX74004 is a tri-mode, dual-band LNA/downconverter designed in Conexant’s advanced SiGe process. The device meets and exceeds cdmaOne, cdma2000, and AMPS requirements for U.S. and Korean cellular, Japan cellular, U.S. PCS and Korean PCS markets. The CX74004 can also be optimized for dual-mode GSM/wideband CDMA (WCDMA) applications in the GSM and IMT-2000 bands.

Distinguishing Features
• Tri-mode, dual-band functionality
• Battery-cell operation
   (2.7V < VCC < 3.6V)
• PCS bypass LNA NF=1.9 dB typical
• Three-step cellular LNA NF=1.8 dB typical
• 5mm x 5mm land grid array (LGA) chipscale package

Product Features
• Three-step gain LNA designed to meet intermodulation distortion specifications for CDMA applications
• Three independent mixers, one for the PCS band and two for the cellular band, designed to operate with very low LO power of -10dBm

APPLICATIONs
• Cellular– and PCS–band phones
• cdmaOne, cdma2000 and AMPS modes in the following bands:
   — U.S. cellular
   — Japan cellular
   — U.S. PCS
   — Korea PCS
• GSM/WCDMA dual-mode applications