TDC/DTC

Type-I: Ring Oscillator (RO) TDC

• Richardson, Justin, Richard Walker, Lindsay Grant, David Stoppa, Fausto Borghetti, Edoardo Charbon, Marek Gersbach, and Robert K. Henderson. "A 32× 32 50ps resolution 10 bit time to digital converter array in 130nm CMOS for time correlated imaging." In Custom Integrated Circuits Conference, 2009. CICC'09. IEEE, pp. 77-80. IEEE, 2009.
• Vornicu, Ion, Ricardo Carmona-Galán and Angel Rodríguez-Vázquez. “A CMOS 0.18μm 64×64 single photon image sensor with in-pixel 11b time-to-digital converter.” 2014 International Semiconductor Conference (CAS) (2014): 131-134.
• Veerappan, Chockalingam, Justin Richardson, Richard Walker, Day-Uey Li, Matthew W. Fishburn, Yuki Maruyama, David Stoppa et al. "A 160× 128 single-photon image sensor with on-pixel 55ps 10b time-to-digital converter." In Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2011 IEEE International, pp. 312-314. IEEE, 2011.