Journal Forum

Synthetic Reverberator - January 1960

Sound Board: High-Resolution Audio - October 2015

Synchronized Swept-Sine: Theory, Application, and Implementation - October 2015

Access Journal Forum

AES E-Library

1W 104dBA SNR Filterless Fully-Digital Class D Audio Amplifier with EMI Reduction Technique

Document Thumbnail

A 1W filter-less power DAC featuring 104dBA SNR and EMI spreading is presented. Pre-distortion algorithms are used to reduce harmonic distortion inherent to the employed modulation process, and an oversampling noise shaper allows reducing modulator clock speed to facilitate hardware implementation while keeping high-fidelity quality. No analog circuits exist from I2S interface to speaker, leading to zero output offset and good efficiency even at medium/low power levels. 1.2V digital and 2.7V-5V output supplies are used. Active area is 0.94mm2 in a 0.13micron CMOS process. Total harmonic distortion at maximum level is about 0.2%.

AES Convention: Paper Number:
Publication Date:

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!

Facebook   Twitter   LinkedIn   Google+   YouTube   RSS News Feeds  
AES - Audio Engineering Society