A high speed comparator applied to GHz gated single photon detection technology is proposed. The comparator is based on the combination of pre-amplification and dynamic regenerative latching structures, resulting in an effective improvement in response speed. In this paper, an analysis on the transmission delay of the dynamic latch comparators is presented. The proposed circuit is implemented in 350 nm CMOS technology and occupies an active area of 0.012 mm2. The delay of the whole detection system is approximately 256ps and the discrimination level of the proposed comparator is 50mV while consuming 4.7mW at supply voltages of 3.3V. The comparator can be used in a single photon gated detection system under 1 GHz condition.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.