The HFA3767 is a monolithic bipolar quadrature modulator with gain control for CDMA/AMPS cellular applications. An upconverter quadrature mixer and an output gain control stage with better than 70dB of dynamic range are integrated in the design. A local oscillator input requires low drive levels and a divide by two phase shifter with duty cycle compensation achieves excellent phase and amplitude balance properties. The HFA3767 is one of the four chips in the PRISM™ chip set and is housed in a 20 lead SSOP package ideally suited to cellular handset applications.

FEATUREs
• I/Q Amplitude and Phase Balance . . . . . . . . . . . 0.5dB, 2°
• 130MHz AGC Amplifier/Attenuator range . . . . . . . .>70dB
• Low LO Drive Level . . . . . . . . . . . . . . . . . . . . . . . .-10dBm
• Power Enable/Disable Control
• Single Supply Battery Operation . . . . . . . . . . . 2.7 to 3.3V

APPLICATIONs
• IS95A CDMA/AMPS Dual Mode Handsets
• Wideband CDMA Handsets
• Full Duplex Transceivers
• CDMA/TDMA Packet Protocol Radios
• Portable Battery Powered Equipment