SKY77174 Datasheet | Skyworks Solutions

.. PRODUCT SUMMARY SKY77174 Power Amplifier Module for WCDMA / HSDPA (1920- 1980 MHz) Applications - WCDMA Handsets - HSDPA Handsets - Personal munications Services (PCS) - Wireless local loop (WLL) Description The SKY77174 Power Amplifier module is a fully matched 10-pad surface mount module developed for Wideband Code Division Multiple Access (WCDMA) applications. This small and efficient power amplifier packs full coverage of the 1920- 1980 MHz bandwidth into a single pact package. The SKY77174 meets the stringent spectral linearity requirements of HSDPA (High Speed Downlink Packet Access) data transmission with high power added efficiency for power output of up to 28 d Bm. Because of high efficiencies attained throughout the entire power range, the SKY77174 delivers unsurpassed talk-time advantages. The single Gallium Arsenide (Ga As) Microwave Monolithic Integrated Circuit (MMIC) contains all active circuitry in the module. The MMIC includes on-board bias circuitry, as well as input and interstage matching circuits. The output match is realized off-chip within the module package to optimize efficiency and power performance into a 50 Ω load. This device is manufactured with Skyworks’ In Ga P Ga As Heterojunction Bipolar Transistor (HBT) process that provides for all positive voltage DC supply operation while maintaining high efficiency and good linearity. Primary bias to the SKY77174 is supplied directly from a three-cell Ni-Cd, a single-cell Li-Ion, or other suitable battery with an output in the 3.1 to 4.6 volt range. No VREF voltage is required. Power down is acplished by setting the voltage on VENABLE to zero volts. Digital bias control can be used to optimize efficiency at high and low power or analog bias control can be used to optimize efficiency over the entire power range. No external supply side switch is needed as typical “off” leakage is a few microamperes with full primary voltage supplied from the battery. Features - No...