A 35 MHz CMOS receiver for 3 ns laser pulses in pulsed TOF laser ranging
Kostamovaara, Juha; Kurtti, Sami; Ruotsalainen, Tarmo (2025-05-14)
IEEE
14.05.2025
J. Kostamovaara, S. Kurtti and T. Ruotsalainen, "A 35 MHz CMOS Receiver for 3 ns Laser Pulses in Pulsed TOF Laser Ranging," in IEEE Transactions on Instrumentation and Measurement, vol. 74, pp. 1-12, 2025, Art no. 2009912, doi: 10.1109/TIM.2025.3569943
https://creativecommons.org/licenses/by-nc-nd/4.0/
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. For more information, see https://creativecommons.org/licenses/by-nc-nd/4.0/.
https://creativecommons.org/licenses/by-nc-nd/4.0/
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. For more information, see https://creativecommons.org/licenses/by-nc-nd/4.0/.
https://creativecommons.org/licenses/by-nc-nd/4.0/
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202505263923
https://urn.fi/URN:NBN:fi:oulu-202505263923
Tiivistelmä
Abstract
The relation between laser transmitter pulse properties and the corresponding optical receiver parameters is discussed, especially from the signal-to-noise ratio and precision points of view. It is shown that the matching of the receiver bandwidth to the laser pulse width maximizes the signal-to-noise ratio without significantly impairing the precision of the measurement. A CMOS receiver with a bandwidth of 35 MHz for the detection of 3 ns (FWHM) laser pulses is presented as a design case. This consists of fully differential pre- and post-amplifiers, biasing circuits and a Gm-RC block to control the output dc levels. The receiver achieves an equivalent total input-referred current noise of 16.5 nArms for 3 ns (FWHM) laser pulses with an 80 μm (diameter) avalanche photo detector (1550 nm). The single shot measurement precision (σ - value) is ~200 ps at an SNR of 20. The receiver is realized in 0.18 μm CMOS technology and consumes 90 mW of power.
The relation between laser transmitter pulse properties and the corresponding optical receiver parameters is discussed, especially from the signal-to-noise ratio and precision points of view. It is shown that the matching of the receiver bandwidth to the laser pulse width maximizes the signal-to-noise ratio without significantly impairing the precision of the measurement. A CMOS receiver with a bandwidth of 35 MHz for the detection of 3 ns (FWHM) laser pulses is presented as a design case. This consists of fully differential pre- and post-amplifiers, biasing circuits and a Gm-RC block to control the output dc levels. The receiver achieves an equivalent total input-referred current noise of 16.5 nArms for 3 ns (FWHM) laser pulses with an 80 μm (diameter) avalanche photo detector (1550 nm). The single shot measurement precision (σ - value) is ~200 ps at an SNR of 20. The receiver is realized in 0.18 μm CMOS technology and consumes 90 mW of power.
Kokoelmat
- Avoin saatavuus [38618]
Ellei muuten mainita, aineiston lisenssi on https://creativecommons.org/licenses/by-nc-nd/4.0/