Abstract
Stanford Microdevices’ SGA-9289 is a high performance SiGe amplifier designed for operation from DC to 3500 MHz. The amplifier is manufactured using the latest Silicon Germanium Heterostructure Bipolar Transistor (SiGe HBT) process. The process has a VBCEO=8V and an fT=25 GHz. The SiGe HBT process makes the SGA-9289 a very cost-effective solution for applications requiring high linearity at moderate biasing levels. This application note illustrates several application circuits for key frequency bands in the 800-2500 MHz spectrum.

Product Features
• DC-3500 MHz Operation
• High Output IP3, +41.5 dBm Typical at 1.96 GHz
• 11.0 dB Gain Typical at 1.96 GHz
• 28.6 dBm P1dB Typical at 1.96 GHz
• Cost Effective

Applications
• Wireless Infrastructure Driver Amplifiers
• CATV Amplifiers
• Wireless Data, WLL Amplifiers