Product Description
The RF2668 is an integrated complete quadrature modulator, IF AGC amplifier, upconverter, and PLL, designed for the transmit section of dual-mode CDMA/FM cellular, PCS, and tri-mode CDMA applications. It is designed to modulate baseband I and Q signals, amplify the resulting IF signals while providing 95dB of gain control range, and perform the final upconversion to UHF. Noise Figure, IP3, and other specifications are designed to be compatible with the IS-98 Interim Standard.

Features
• Supports Tri-Mode Operation
• Digitally Controlled Power Down Modes
• 2.7V to 3.3V Operation
• Digital First LO Quadrature Divider
• Double-Balanced UHF Upconvert Mixer
• IF AGC Amp with 95dB Gain Control

Typical Applications
• CDMA/FM Cellular and PCS Systems
• Tri-Mode/Dual-Band CDMA Applications
• W-CDMA Systems
• Wireless Local Loop Systems
• Spread-Spectrum Cordless Phones
• High Speed Data Modems