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A Novel Speculative...
A Novel Speculative Pseudo-Parallel \Delta\Sigma Modulator
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- Johansson, Jesper, 1989 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Svensson, Lars, 1960 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2015
- 2015
- Engelska.
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Ingår i: 32rd NORCHIP 2014. ; , s. Article number 7004712-
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Abstract
Ämnesord
Stäng
- We present a novel speculative pseudo-parallel \Delta\Sigma modulator structure, which almost halves the logic depthof the critical path in the pseudo-parallel Hatami structure. Following Hatami, our modulator calculates a block of n consecutive output bits in parallel, and then employs a parallelserial interface to output the bits at n times the modulator clock frequency. We circumvent the block-to-block dependence, which limits the clock speed of the Hatami structure, by speculatively calculating the outputs based on all possible output values of theprevious block, and then selecting the correct one. We present cost and performance estimates for an initial implementation of the modulator, synthesized towards an FPGA and an ASIC technology.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
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