The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
시간 인터리빙은 ΣΔ 변조기의 유효 샘플링 속도를 높이는 효율적인 접근 방식이지만, TI(시간 인터리빙) ΣΔ 변조기는 채널 불일치에 민감하여 양자화 잡음이 관심 대역으로 다시 접히게 됩니다. 0.18채널 TI ΣΔ 변조기의 채널 불일치로 인해 발생하는 접힌 잡음을 줄이기 위해 저전력 78.9차 0.5채널 TI ΣΔ 변조기가 제안되었습니다. 변조기의 잡음 전달 함수(NTF)는 대역 통과 필터입니다. 이 대역 통과 NTF를 사용하면 접힌 노이즈를 줄일 수 있습니다. 0.4개의 연산 증폭기를 사용하여 전체 변조기를 구현할 수 있으므로 전력 소모에 유리합니다. 제안된 변조기의 구현 회로는 0.4μm COMS 기술로 설계되었습니다. 제안된 변조기는 단일 샘플링 커패시터에 대해 80.5%의 채널 불일치와 19.5%의 선형 기울기 불일치로 1.8dB의 SNDR을 달성할 수 있습니다. 몬테 카를로 시뮬레이션은 모든 커패시터에 대해 XNUMX% 표준 편차의 무작위 가우스 불일치로 수행되었으며, 결과적으로 평균 SNDR은 XNUMXdB입니다. 제안된 TI 변조기는 채널 불일치에 민감하지 않음을 나타냅니다. 총 전력 소비는 XNUMXV 공급 장치에서 XNUMXmW입니다.
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부
Xiao YANG, Hong ZHANG, Guican CHEN, "A Low-Power Second-Order Two-Channel Time-Interleaved ΣΔ Modulator for Broadband Applications" in IEICE TRANSACTIONS on Electronics,
vol. E92-C, no. 6, pp. 852-859, June 2009, doi: 10.1587/transele.E92.C.852.
Abstract: Time-interleaving is an efficient approach to increase the effective sampling rate of the ΣΔ modulators, but time-interleaved (TI) ΣΔ modulators are sensitive to channel mismatch, which causes the quantization noise folded back into the band of interest. To reduce the folded noise caused by the channel mismatch of two-channel TI ΣΔ modulators, a low-power second-order two-channel TI ΣΔ modulator is proposed. The noise transfer function (NTF) of the modulator is a band-pass filter. By using this band-pass NTF, the folded noised can be reduced. The entire modulator can be implemented by employing three op-amps, which is beneficial for power consumption. The circuit of implementation for the proposed modulator is designed in 0.18 µm COMS technology. The proposed modulator can achieve a SNDR of 78.9 dB with a channel mismatch of 0.5% and a linear gradient mismatch of 0.4% for unity sampling capacitors. Monte Carlo simulation is done with a random Gaussian mismatch of 0.4% standard deviation for all capacitors, resulting in an average SNDR of 80.5 dB. It is indicated that the proposed TI modulator is insensitive to the channel mismatch. The total power consumption is 19.5 mW from a 1.8 V supply.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E92.C.852/_p
부
@ARTICLE{e92-c_6_852,
author={Xiao YANG, Hong ZHANG, Guican CHEN, },
journal={IEICE TRANSACTIONS on Electronics},
title={A Low-Power Second-Order Two-Channel Time-Interleaved ΣΔ Modulator for Broadband Applications},
year={2009},
volume={E92-C},
number={6},
pages={852-859},
abstract={Time-interleaving is an efficient approach to increase the effective sampling rate of the ΣΔ modulators, but time-interleaved (TI) ΣΔ modulators are sensitive to channel mismatch, which causes the quantization noise folded back into the band of interest. To reduce the folded noise caused by the channel mismatch of two-channel TI ΣΔ modulators, a low-power second-order two-channel TI ΣΔ modulator is proposed. The noise transfer function (NTF) of the modulator is a band-pass filter. By using this band-pass NTF, the folded noised can be reduced. The entire modulator can be implemented by employing three op-amps, which is beneficial for power consumption. The circuit of implementation for the proposed modulator is designed in 0.18 µm COMS technology. The proposed modulator can achieve a SNDR of 78.9 dB with a channel mismatch of 0.5% and a linear gradient mismatch of 0.4% for unity sampling capacitors. Monte Carlo simulation is done with a random Gaussian mismatch of 0.4% standard deviation for all capacitors, resulting in an average SNDR of 80.5 dB. It is indicated that the proposed TI modulator is insensitive to the channel mismatch. The total power consumption is 19.5 mW from a 1.8 V supply.},
keywords={},
doi={10.1587/transele.E92.C.852},
ISSN={1745-1353},
month={June},}
부
TY - JOUR
TI - A Low-Power Second-Order Two-Channel Time-Interleaved ΣΔ Modulator for Broadband Applications
T2 - IEICE TRANSACTIONS on Electronics
SP - 852
EP - 859
AU - Xiao YANG
AU - Hong ZHANG
AU - Guican CHEN
PY - 2009
DO - 10.1587/transele.E92.C.852
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E92-C
IS - 6
JA - IEICE TRANSACTIONS on Electronics
Y1 - June 2009
AB - Time-interleaving is an efficient approach to increase the effective sampling rate of the ΣΔ modulators, but time-interleaved (TI) ΣΔ modulators are sensitive to channel mismatch, which causes the quantization noise folded back into the band of interest. To reduce the folded noise caused by the channel mismatch of two-channel TI ΣΔ modulators, a low-power second-order two-channel TI ΣΔ modulator is proposed. The noise transfer function (NTF) of the modulator is a band-pass filter. By using this band-pass NTF, the folded noised can be reduced. The entire modulator can be implemented by employing three op-amps, which is beneficial for power consumption. The circuit of implementation for the proposed modulator is designed in 0.18 µm COMS technology. The proposed modulator can achieve a SNDR of 78.9 dB with a channel mismatch of 0.5% and a linear gradient mismatch of 0.4% for unity sampling capacitors. Monte Carlo simulation is done with a random Gaussian mismatch of 0.4% standard deviation for all capacitors, resulting in an average SNDR of 80.5 dB. It is indicated that the proposed TI modulator is insensitive to the channel mismatch. The total power consumption is 19.5 mW from a 1.8 V supply.
ER -