Abstract
This paper presents a class-AB driver for high-fidelity audio. It attains high-linearity at low-power by using an improved output stage biasing technique and a new frequency compensation scheme. Designed in standard 65nm CMOS, the driver delivers 5I.2mW peak power to 16Ω 0.33nF load, while consuming 0.97mW. It achieves -101.4dB THD+N over full audio band, the lowest ever reported linearity among sub-milliwatt CMOS class-AB drivers. Compared to prior works, it has >12dB better linearity and >7x higher unity-gain bandwidth, resulting in 2.5x improvement in linearity FOM (=Peak Load Power/ (Quiescent Power × THD+N[%])).
Original language | English |
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Title of host publication | 2018 Symposium on VLSI Circuits Digest of Technical Papers |
Place of Publication | Piscataway, NJ |
Publisher | IEEE |
Pages | 235-236 |
Number of pages | 2 |
Volume | 2018-June |
ISBN (Electronic) | 978-1-5386-4214-6 |
DOIs | |
Publication status | Published - 2018 |
Event | 2018 Symposia on VLSI Technology and Circuits: 2018 VLSI Technology Symposium - 2018 VLSI Circuits - Hilton Hawaiian Village, Honolulu, United States Duration: 18 Jun 2018 → 22 Jun 2018 |
Conference
Conference | 2018 Symposia on VLSI Technology and Circuits |
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Country/Territory | United States |
City | Honolulu |
Period | 18/06/18 → 22/06/18 |
Keywords
- Linearity
- Distortion
- Damping
- Topology
- Bandwidth
- Voltage measurement
- Capacitors