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A Stereo Audio Delta-Sigma DAC with 40-kHz Bandwidth and 103-dB SNR
| Content Provider | Semantic Scholar |
|---|---|
| Author | Yang, Han Park, Yujin Kim, Hyunjong Kim, Suhwan |
| Copyright Year | 2018 |
| Abstract | A wide-band and low-noise stereo deltasigma (ΔΣ) digital-to-analog converter (DAC) for audio applications is proposed. A multi-bit quantizer with data-weighted averaging is used to reduce quantization noise and a half-band finite impulse response filter is designed to increase the speed of the ΔΣ modulator. A direct-charge-transfer switchedcapacitor DAC and a track-and-hold circuit with a deglitch timing are used to improve the operating speed and the linearity of the audio DAC. The chip is fabricated with a 0.13-μm CMOS process, which uses the supply voltages of 1.2 V for the digital domain and 3.3 V for the analog domain. The experimental results show that our audio DAC achieves 40-kHz bandwidth, 103-dB A-weighted signal-to-noise ratio, and 85-dB total harmonic distortion and noise. |
| Starting Page | 685 |
| Ending Page | 693 |
| Page Count | 9 |
| File Format | PDF HTM / HTML |
| DOI | 10.5573/jsts.2018.18.6.685 |
| Volume Number | 18 |
| Alternate Webpage(s) | http://analog.snu.ac.kr/publications/Year2018Volume18_06_05.pdf |
| Alternate Webpage(s) | https://doi.org/10.5573/jsts.2018.18.6.685 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
