Name
Abstract | ||
|---|---|---|
This paper presents a second-order delta-sigma modulator for audio applications. It uses feed-forward architecture and 4-bit quantizer to enhance linearity and noise performance. A 4-bit successive approximation (SAR) analog-to-digital converter (ADC) with summing operation is implemented to reduce power consumption by eliminating the active summing amplifier. In order to reduce the distortion resulted from the capacitor mismatch of the feedback digital-to-analog converter (DAC), a tree-structured dynamic element matching (DEM) is employed. The prototype delta-sigma ADC implemented in a 45 nm CMOS process occupies 231.2 μm2 and achieves a dynamic range (DR) of 94.0 dB, a peak signal-to-noise ratio (SNR) of 92.1 dB and a peak signal-to-noise and distortion ratio (SNDR) of 84.5 dB for 24 kHz signal bandwidth, while consuming 8.2 mW with 3.3 V supply. |
Year | DOI | Venue |
|---|---|---|
2011 | 10.1109/ISOCC.2011.6138649 | ISOCC |
Keywords | Field | DocType |
cmos analogue integrated circuits,analogue-digital conversion,audio systems,capacitors,delta-sigma modulation,distortion,feedback,feedforward amplifiers,trees (mathematics),δς adc,cmos process,dac,dem,sar type quantizer,sndr,snr,analog-to-digital converter,audio applications,bandwidth 24 khz,capacitor mismatch,distortion ratio,dynamic range,feedback digital-to-analog converter,feedforward architecture,linearity performance,noise performance,peak signal-to-noise ratio,power 8.2 mw,power consumption,prototype delta-sigma adc,second-order delta-sigma modulator,signal bandwidth,size 45 nm,successive approximation,summing amplifier,summing operation,tree-structured dynamic element matching,voltage 3.3 v,word length 4 bit,delta-sigma modulator,dynamic element matching,feed-forward,successive approximation analog-to-digital converter,peak signal to noise ratio,delta sigma modulator,feed forward,delta sigma modulation,tree structure,second order | 4-bit,Dynamic range,Computer science,Linearity,Electronic engineering,Delta-sigma modulation,Bandwidth (signal processing),Operational amplifier applications,Quantization (signal processing),Distortion,Electrical engineering | Conference |
ISBN | Citations | PageRank |
978-1-4577-0710-0 | 7 | 1.07 |
References | Authors | |
2 | 5 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| jinseon kim | 1 | 7 | 1.07 |
| Tae-In Kwon | 2 | 7 | 1.41 |
| Gil-Cho Ahn | 3 | 71 | 22.21 |
| Yi-Gyeong Kim | 4 | 24 | 3.78 |
| Jong-Kee Kwon | 5 | 158 | 23.10 |