| darkfenriz |
Hi
Recently my dad bought himself a car stereo by sony marked with "s-mosfet"
What does it stand for?
I listened to it and it sounds some kind of bad, especially at low levels, like a wideband crossover distortion.
My two guesses about power amp are:
1. no feedback PWM design( does 's' mean switchng?)
2. common source class B design with low feedback
Anyone knows? |
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| Perry Babin |
From Google:
DRIVE-S head-unit have a high powered S-MOSFET amplifier, capable of delivering 208 Watts (MAX). S-MOSFET features a unique technology called SOI (silicon on insulator) and it's primary function is to reduce noise and cross talk that normally occur between audio channels. This technology delivers power and reduced distortion. |
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| jacco vermeulen |
Normal CMOS have much more silicon, which increases parasitic capacitance.
The soi technology leads to lower capacitance=>higher speed |
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