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High resolution digital filter chip

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4 Author(s)
Aliphas, A. ; Kurzweil Applied Intelligence, Waltham, MA ; Ganong, W., III ; Stonestrom, P. ; Perkins, D.

A general purpose, programmable digital filter chip consisting of eight second order (2 poles & 2 zeros) sections was implemented in 4µNMOS technology. This device uses 24 bit coefficients and data and 48 bits of internal accumulation. These features make this device better than existing 16 bit DSP chips in applications where quantization noise and digital filter stability are of critical importance. A bit serial architecture plus internal multiplexing integrates these eight second order sections in one 24 pin package. This component, named the KSC2408, can be configured (programmed) to be used in different modes and architectures. It is especially suited for digital filterbanks, since it has on-chip and across-chip multiplexing and output control signals. The KSC2408 also features on-chip rectification and output decimation.

Published in:

Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '85.  (Volume:10 )

Date of Conference:

Apr 1985

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