A Continuous-Time Programmable Digital FIR Filter

In this paper, we describe the design and implementation of a continuous-time finite-impulse-response processor chain, which includes a 6-bit asynchronous ADC, an asynchronous digital core, and an 8-bit asynchronous DAC designed in TSMC 0.25-mum technology. The continuous-time, discrete-amplitude sy...

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Veröffentlicht in:IEEE journal of solid-state circuits 2006-11, Vol.41 (11), p.2512-2520
Hauptverfasser: Li, Y.W., Shepard, K.L., Tsividis, Y.P.
Format: Artikel
Sprache:eng
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Zusammenfassung:In this paper, we describe the design and implementation of a continuous-time finite-impulse-response processor chain, which includes a 6-bit asynchronous ADC, an asynchronous digital core, and an 8-bit asynchronous DAC designed in TSMC 0.25-mum technology. The continuous-time, discrete-amplitude systems combine benefits associated with analog and digital systems. Discrete-amplitude representations leverage the noise immunity and robustness of digital implementations. Continuous-time, nonsampled operation prevents aliasing and reduces the in-band quantization noise associated with the aliasing of subharmonic components. We present measurement results demonstrating an audio low-pass filter with a bandwidth of 6.0 kHz
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.2006.883314