SKY77175

• No VREF required
• Supports low collector voltage operation
• Good linearity High efficiency
• Separate digital VENABLE pads for PCS and Cellular modes of operation
• VCONT pad controls analog bias current.

Dual-Band Power Amplifier Module for WCDMA / HSDPA Band II (1850-1910 MHz), Band V (824-849 MHz)

SKY77175 PAM is a fully matched, 14-pad, SMT module developed for full WCDMA Band II and Band V applications. The PAM meets the stringent spectral linearity requirements of WCDMA transmission, high power added efficiency for power output to 29 dBm (Band II) and 29 dBm (Band V), and a low current analog pad (VCONT) to improve efficiency for the low RF power range operation. GaAs MMIC SKY77175 contains all active RF circuitry including input and interstage matching circuits; output match into a 50-ohm load is realized off-chip within the module package. Skyworks' GaAs (HBT) process provides for all positive voltage DC supply operation and maintains high efficiency and good linearity. Primary bias of SKY77175 is supplied directly from suitable batteries with 3.1 V to 4.6 V outputs. No external supply side switch is needed. Setting a logic low level on the VEN pad accomplishes power down.