MSA-1105-TR1G – AVAGO

The MSA-1105-TR1G, manufactured by Avago Technologies, is a silicon bipolar monolithic microwave integrated circuit (MMIC) amplifier designed for applications within the 50 MHz to 1.3 GHz frequency range. It is fabricated using a high-frequency process technology enabling broadband performance. The device is housed in a SOT-89 (or similar 05 PLAST) surface-mount plastic package, facilitating automated assembly. The MSA-1105-TR1G is typically used as a gain block in ISM band receivers and transmitters, and other RF front-end circuits. Biasing is achieved through an external resistor network to set the collector current for optimal gain and linearity. The amplifier exhibits a nominal gain of approximately 14 dB at 1 GHz and requires a supply voltage typically between 4.5V and 5.5V. The TR1G suffix denotes tape and reel packaging for automated pick-and-place assembly.