skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 201435b ? skyworks proprietary and confidential information. ? products and product informat ion are subject to change with out notice. ? december 2, 2010 1 product summary SKY77735 power amplifier module for cdma (824 mhzC849 mhz) applications ? cdma handsets features ? low voltage positive bias supply 3.2 v to 4.2 v ? good linearity ? high efficiency - 40% @ 27 dbm ? large dynamic range ? small, low profile package - 3 mm x 3 mm x 0.9 mm - 10-pad configuration ? power down control ? ingap ? supports low collector voltage operation ? digital enable ? no v ref required ? cmos compatible control signals ? integrated directional coupler description the SKY77735 power amplifier module (pam) is a fully matched 10-pad surface mount module developed for code division multiple access (cdma) applications. this small and efficient module packs full coverage of the 824C849 mhz bandwidth into a single compact package. because high efficiencies are attained throughout the entire power range, the SKY77735 delivers unsurpassed talk- time advantages. a directional coupler is integrated into the module to eliminate the need for any external coupler. the single gallium arsenide (gaas) microwave monolithic integrated circuit (mmic) contains all active circuitry in the module. the mmic contains on-board bias circuitry, as well as input and interstage matching circuits. output match into a 50-ohm load is realized off-chip within the module package to optimize efficiency and power performance. the SKY77735 pam is manufactured with skyworks ingap gaas heterojunction bipolar transistor (hbt) bifet process that provides for all positive voltage dc supply operation while maintaining high efficiency and good linearity. primary bias to the SKY77735 is supplied directly from any suitable battery with an output in the 3.2 to 4.2 volt range. no vref voltage is required. power down is accomplished by setting the voltage on venable to zero volts. no external supply side switch is needed as typical off leakage is a few microamperes with full primary voltage supplied from the battery. figure 1 is a functional block diagram of the SKY77735. figure 2 shows the pad layout and pad names. figure 3 is a mechanical diagram of the SKY77735 package dimensions. figure 1. SKY77735 functional block diagram
product summary SKY77735 power amplifier module for cdma (824 mhzC849 mhz) skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@skyworksinc.com ? www.skyworksinc.com 2 december 2, 2010 ? skyworks proprietary and confidential info rmation. ? products and pro duct information are subject to ch ange without notice. ? 201435b figure 2. SKY77735 pad names and configuration (top view) figure 3. dimensional diagram for 3 mm x 3 mm x 0.9 mm package C SKY77735 specific
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