All-Digital Time-Mode Direct-Form All-Pole Biquadratic Filter Realization

In this brief, the design of time-mode signal processing (TMSP) circuits having an all-digital advantage is introduced and experimental data covering all necessary aspects of operation such as frequency response are presented. TMSP building blocks were used to design two second-order filter prototypes having Butterworth and Chebychev I responses demonstrating peak signal-to-noise-plus-distortion values of 47 dB and 37 dB, respectively, making it a good candidate for data conversion applications.

[1]  Gordon W. Roberts,et al.  A Brief Introduction to Time-to-Digital and Digital-to-Time Converters , 2010, IEEE Transactions on Circuits and Systems II: Express Briefs.

[2]  Gordon W. Roberts,et al.  All-digital Time-Mode elliptic filters based on the operational simulation of LC ladders , 2014, 2014 IEEE International Symposium on Circuits and Systems (ISCAS).

[3]  Gordon W. Roberts,et al.  Digital storage, addition and subtraction of time-mode variables , 2011 .

[4]  Arash Ardakani,et al.  Hardware implementation of FIR/IIR digital filters using integral stochastic computation , 2016, 2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP).

[5]  Pavan Kumar Hanumolu,et al.  Analog Filter Design Using Ring Oscillator Integrators , 2012, IEEE Journal of Solid-State Circuits.

[6]  Gordon W. Roberts,et al.  Sampled-data IIR filtering using time-mode signal processing circuits , 2009, 2009 IEEE International Symposium on Circuits and Systems.

[7]  Andrea Baschirotto,et al.  A 0.55 V 60 dB-DR Fourth-Order Analog Baseband Filter , 2009, IEEE Journal of Solid-State Circuits.

[8]  Pavan Kumar Hanumolu,et al.  A 0.55V 61dB-SNR 67dB-SFDR 7MHz 4th-order Butterworth filter using ring-oscillator-based integrators in 90nm CMOS , 2012, 2012 IEEE International Solid-State Circuits Conference.

[9]  B. Ramesh,et al.  Low sensitivity digital LDI ladder filters with elliptic magnitude response , 1986 .

[10]  John G. Harris,et al.  Time-based arithmetic using step functions , 2004, 2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512).