DESCRIPTION

The SA9500 integrates all the front end receive mixers necessary for use in dual-band, triple-mode CDMA/AMPS cellular phone handsets. There are three individual mixer blocks, each optimised for high linearity with low power consumption for operation in one of the following modes: High-band 1900MHz PCS CDMA, low-band 800MHz cellular CDMA or analog FM AMPS/TACS modes.

FEATURES

• PCS and cellular downconverter mixers typical performance:

– PCS: Gain=11.3dB, NF=8.3dB, IIP3= +1.4dBm

– CDMA: Gain=10.7dB, NF=9.6dB, IIP3= +6.3dBm

– FM: Gain= 7.2dB, NF=10.2dB, IIP3= +5.9dBm

• Separate, selectable IF outputs to suit FM and CDMA bandwiths

• Integrated frequency doubler for PCS mixer LO

• Programmable wideband LO output buffer

• Low voltage operation down to 2.7V

• Low current consumption in “idle”/receive modes:

– PCS : 20.0mA @ 2.7V

– CDMA: 20.2mA @ 2.7V

– FM: 7.7mA @ 2.7V

• Low standby current in sleep mode <20µA

• TSSOP20 package

APPLICATIONS

• 800MHz analog FM and CDMA digital receivers

• 1900MHz PCS band CDMA digital recievers

• Supports dual-mode and triple-mode operation

• Digital mobile communications equipment

• Portable, low power radio equipment