What to use to build a transistor driver to BLF647
时间：04-09
整理：3721RD
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I want to make to transistor driver to BLF647 in <100MHz-500MHz>.
What I should use ?
What I should use ?
You need approximately 3W to drive BLF647 to full power (120W)
You can use BLF404 (12V) or BLF542 (28V)
The amplifier will be use with 16-QAM modulation (require high performance -IMD)
transistors BLF542 or BLF404 ?
Do you have vfone some measurements data IMD ?
In this case use BLF542 which allows you to back-off the output power, to avoid the high peaks of the modulation.
IMD3 at maximum output power (5W) is approximately -30dBc, and better than this at 3W.
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