Efficient analog front end for a read/write channel of a hard disk drive running from a highly regulated power supply

A read/write channel for a hard disk drive comprising:

• an analog portion;
• a clock synthesizer, wherein the analog portion and the clock synthesizer both comprise high voltage transistors which operate in a first voltage range and low voltage transistors which operate in a second voltage range, and wherein the first voltage range is within the second voltage range;
• and
• a highly regulated power supply connected to the analog portion and the clock synthesizer, wherein the highly regulated power supply supplies power that is within the first voltage range to the analog portion and the clock synthesizer.

A method for operating a read/write channel for a hard disk drive, the method comprising:

• providing an analog portion and a clock synthesizer of the read/write channel, wherein the analog portion and the clock synthesizer both comprise high voltage transistors which operate in a first voltage range and low voltage transistors which operate in a second voltage range;
• insuring that the first voltage range is within the second voltage range;
• generating power that is within the first voltage range using a highly regulated power supply;
• supplying the power to the analog portion and the clock synthesizer.