SKY77768中文资料4G/LTE Power Amplifiers数据手册Skyworks规格书

描述 Description

The SKY77768 Power Amplifier Module (PAM) is a fully matched 10-pad surface mount module developed for Wideband Code Division Multiple Access (WCDMA) applications. This small and efficient module packs full 880-915 MHz bandwidth coverage into a single compact package. Because of high efficiencies attained throughout the entire power range, the SKY77768 delivers unsurpassed talk-time advantages. The SKY77768 meets the stringent spectral linearity requirements of High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), and Long Term Evolution (LTE) data transmission with high power added efficiency. An integrated directional coupler eliminates the need for any external coupler.The Gallium Arsenide (GaAs) Microwave Monolithic Integrated Circuit (MMIC) contains all amplifier active circuitry, including input and interstage matching circuits. The silicon CMOS support die, providing precision biasing for the MMIC affords a true CMOS-compatible control interface. Output match into a 50-ohm load, realized off-chip within the module package, optimizes efficiency and power performance.The SKY77768 is manufactured with Skyworks' InGaP GaAs Heterojunction Bipolar Transistor (HBT) process which provides for all positive voltage DC supply operation and maintains high efficiency and good linearity. While primary bias to the SKY77768 can be supplied directly from any suitable battery with an output of 3.2 V to 4.2 V, optimal performance is obtained with VCC2 sourced from a DC-DC power supply adjusted within 0.5 V to 3.4 V based on target output power levels. Power down executes by setting 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.

特性 Features

• Low voltage positive bias supply 3.2 V to 4.2 V
• Good linearity
• High efficiency: 50% at 28.5 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 VREF required
• CMOS compatible control signals
• Integrated Directional Coupler

应用 Application

• Smartphones
• 4G LTE

简介

SKY77768属于RF/IF射频/中频RFID的射频放大器。由制造生产的SKY77768射频放大器在射频应用中，射频放大器产品可用于信号增益和缓冲。这些产品与通用运算放大器的不同之处在于，它们通常适用于更高的频率，更倾向于提供不可调节的固定增益，并且输入或输出阻抗值符合常用传输线特性阻抗。