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An audio amplifier providing up to 1 Watt in standard digital 90-nm CMOS

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2 Author(s)
Becker, R. ; Philips Semicond. Zurich ; Groeneweg, W.H.

An audio amplifier in a standard 90-nm dual gate-oxide CMOS technology is designed for direct connection to the battery in a mobile phone. Special techniques have been applied to run it from a supply voltage of up to 5.5 V. The circuit does not require a dedicated supply voltage generator; it can be integrated on the same chip with the digital signal processor, and provides high output power, good power supply rejection, and good efficiency

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:41 ,  Issue: 7 )