The BLF548 is a balanced N-channel enhancement mode vertical D-MOS transistor in a SOT262 package, especially designed for use in wideband amplifiers up to 500 MHz. The transistor is capable to deliver 150 W nominal output power at a supply voltage of 28 Volts. Due to the low output capacitance the attainable bandwidth will exceed 300 MHz.
A balanced transistor was chosen in order to reduce the second harmonic from transmitter (due to the push-pull effect) and to reduce the number of required components.
A balanced transistor was chosen in order to reduce the second harmonic from transmitter (due to the push-pull effect) and to reduce the number of required components.
The criteria for chosen MOSFETs over bipolar transistors are; high power gain, high load mismatch capabilities, low noise and easy biasing.
Schematic Circuit
Printed Circuit Board (PCB) and Layout
Download BLF548 Application Note
Schematic Circuit
Printed Circuit Board (PCB) and Layout
Download BLF548 Application Note
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