Avalanche photon diode and avalanche diode array, working in Geiger mode, have single photon detection capability. The structure of guard ring is the key factor to avoid the premature edge breakdown of the avalanche diode and increase the maximum bias voltage. A new structure of the guard ring is proposed in this letter, in which the floating guard ring is put outside the p-well guard ring. Simulation results indicate that the maximum bias voltage of the proposed guard ring is higher than that of the state-of-the-art methods.

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Ahstract-In stream programming style, the computation and the memory accesses are decoupled as much as possible. Such kind of programming style has brought new profits both on performance and power-efficiency for digital signal processing.In this paper, the architecture of a stream programming oriented power-efficient digital signal processor named as StreamPoP has been presented for consumer audio applications. The instruction and data supply subsystem of StreamPoP has been well designed for flexible stream programming and high power-efficiency. To further reduce the power consumption, an audio computation specific deep-instruction-pipeline (DIP) has been used in the micro-architecture of StreamPoP. To evaluate the performance of StreamPoP for consumer audio applications, a set of audio benchmarks have been used. It has been presented in this paper that the performance of StreamPoP is better than conventional high performance DSPs, while the former architecture is much more power-efficient for audio applications. The simulated power consumption result of StreamPoP under TSMC 90nm process is S.lmW for AAC real-time decoding.

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