A 19.2 GOPS mixed-signal filter with floating-gate adaptation
作者： M. Figueroa , S. Bridges , D. Hsu , C. Diorio
关键词: Digital filter 、 CMOS 、 Pulse (signal processing) 、 Finite impulse response 、 Transistor 、 Electronic engineering 、 Filter (video) 、 Computer science 、 Mixed-signal integrated circuit 、 Adaptive filter 、 Least mean squares filter
摘要: We have built a 48-tap, mixed-signal adaptive FIR filter with 8-bit digital input and an analog output 10 bits of resolution. The stores its tap weights in nonvolatile memory cells using synapse transistors, adapts the least mean square (LMS) algorithm. run through tapped delay line, multiply words multipliers, adapt coefficients pulse-based feedback. accuracy weight updates exceeds 13 bits. total die area is 2.6 mm/sup 2/ 0.35-/spl mu/m CMOS process. delivers performance 19.2 GOPS at 200 MHz, consumes 20 mW providing 6-mA differential current.
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