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This paper describes a 16b fixed point digital signal processor (DSP), especially a variable pipeline multiply-accumulate (MAC) unit using a redundant binary representation. This new MAC unit improves 9.8% in power consumption and 249b in operation speed at multiply and multiply-accumulate operation over a conventional MAC unit. This chip is fabricated with a 0.5 um double-metal-layer CMOS process and achieves 40 MIPS and 80 MOPS-peak performance.
Date of Conference: 8-10 June 1995