TY - GEN
T1 - A comparison of efficient first stage decimation filters for continuous time delta sigma modulators
AU - Felton, Christopher L.
AU - Gilbert, Barry K.
AU - Haider, Clifton R.
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/7/2
Y1 - 2017/7/2
N2 - Low power, high signal to noise ratio, analog-to-digital converters are frequently required for biomedical applications. In addition, many such biomedical applications require high decimation rate digital filters; however, these digital filters demand significant power and circuit resources. Traditional multiplier-less cascaded integrated-comb (CIC) filter structure may be used but require large word lengths for high decimation rates. Alternatively, a cascaded minimum polyphase (CMP) structure provides a non-recursive multiplier-less decimation filter at reduced word lengths but additional filter sections. This work compares the circuit resource utilization and power consumption of the recursive and non-recursive structures. Considering small input word widths, single synchronous clock design, and hardware description synthesis, the CIC structure is more efficient than the CMP in the configurations tested.
AB - Low power, high signal to noise ratio, analog-to-digital converters are frequently required for biomedical applications. In addition, many such biomedical applications require high decimation rate digital filters; however, these digital filters demand significant power and circuit resources. Traditional multiplier-less cascaded integrated-comb (CIC) filter structure may be used but require large word lengths for high decimation rates. Alternatively, a cascaded minimum polyphase (CMP) structure provides a non-recursive multiplier-less decimation filter at reduced word lengths but additional filter sections. This work compares the circuit resource utilization and power consumption of the recursive and non-recursive structures. Considering small input word widths, single synchronous clock design, and hardware description synthesis, the CIC structure is more efficient than the CMP in the configurations tested.
KW - ASIC
KW - CIC
KW - CIC non-recursive
KW - Comb filtering
KW - Decimation filtering
KW - Delta sigma modulation
KW - FPGA
KW - HDL synthesis
KW - Sine filtering
UR - http://www.scopus.com/inward/record.url?scp=85051017582&partnerID=8YFLogxK
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U2 - 10.1109/ACSSC.2017.8335384
DO - 10.1109/ACSSC.2017.8335384
M3 - Conference contribution
AN - SCOPUS:85051017582
T3 - Conference Record of 51st Asilomar Conference on Signals, Systems and Computers, ACSSC 2017
SP - 473
EP - 477
BT - Conference Record of 51st Asilomar Conference on Signals, Systems and Computers, ACSSC 2017
A2 - Matthews, Michael B.
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 51st Asilomar Conference on Signals, Systems and Computers, ACSSC 2017
Y2 - 29 October 2017 through 1 November 2017
ER -