Multi-channel high-linearity time-to-digital converters in 20 nm and 28 nm FPGAs for LiDAR applications
| Autor: | Wujun Xie, David Day-Uei Li, Zhenya Zang, Haochang Chen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
010308 nuclear & particles physics
Computer science TK 020208 electrical & electronic engineering Linearity 02 engineering and technology Converters 01 natural sciences Nonlinear system Lidar 0103 physical sciences Line (geometry) Wide dynamic range 0202 electrical engineering electronic engineering information engineering Calibration Electronic engineering Hardware_ARITHMETICANDLOGICSTRUCTURES Field-programmable gate array |
| Zdroj: | EBCCSP |
| Popis: | This paper proposes a new calibration method, the mixed-binning method, to pursue a TDC with high linearity in field-programmable gate arrays (FPGAs). This method can reduce the nonlinearity caused by large clock skews in FPGAs efficiently. Therefore, a wide dynamic range tapped delay line (TDL) TDC has been developed with maintained linearity. We evaluated this method in Xilinx 20nm UltraScale FPGAs and Xilinx 28nm Virtex-7 FPGAs. Results conduct that this method is perfectly suitable for driverless vehicle applications which require high linearity with an acceptable resolution. The proposed method also has great potentials for multi-channel applications, due to the low logic resource consumption. For a quick proof-of-concept demonstration, an 8-channel solution has also been implemented. It can be further extended to a 64-channel version soon. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|