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Low-power, Dynamic, D-type Flip-Flops for Biomedical Implant Devices

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Abstract (2. Language): 
A dynamic, single-edge-triggered D-type flip-flop (SETDFF) is evaluated for implementation of a successive approximation register analog-to-digital converter intended for biomedical implant devices. The performance of the dynamic SETDFF in a 90nm CMOS technology has been compared to that of a static D-type SETDFF topology employing master-slave latches based on SPICE simulations. Both flip-flop types have been designed and implemented in a 2μm CMOS technology and their performance has been characterized. Compared with the static flip-flop implemented with master-slave latches, the dynamic flip-flop consumes less power, employs a smaller number of transistors and is capable of operating at slightly higher speeds. A dual-edge-triggered flip-flop topology based on the given dynamic flip-flop architecture is proposed in order to further reduce power consumption.
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