Indirect avalanche event detection of Single Photon Avalanche Diode implemented in CMOS FDSOI technology
Abstract
In this letter, a novel indirect avalanche event detection is proposed and demonstrated for Single Photon Avalanche Diodes (SPADs) implemented in CMOS 28 nm Fully Depleted Silicon-On-Insulator (FDSOI) technology. This approach is based on the capacitive coupling between the P-well, i.e. SPAD anode, and the transistor channel, separated by the ultra-thin buried oxide. The associated body-biasing effect is used to dynamically modulate the output of a simple voltage divider synchronously with the SPAD activity. A test-chip has been designed, fabricated and characterized to validate the proposed approach. This novel architecture opens the way for innovative SPAD processing circuitry implemented in 3D native CMOS FDSOI.
- Publication:
-
Solid State Electronics
- Pub Date:
- January 2020
- DOI:
- 10.1016/j.sse.2019.107636
- Bibcode:
- 2020SSEle.16307636C
- Keywords:
-
- CMOS FDSOI;
- SPAD - Single Photon Avalanche Diode;
- Body-biasing;
- Indirect avalanche detection