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Title: LAB4D: A low power, multi-GSa/s, transient digitizer with sampling timebase trimming capabilities

Abstract

The LAB4D is a new application-specific integrated circuit (ASIC) of the Large Analog Bandwidth Recorder and Digitizer with Ordered Readout (LABRADOR) family, for use in direct wideband radio frequency digitization such as is used in ultrahigh energy neutrino and cosmic ray astrophysics. The LAB4D is a single channel switched-capacitor array (SCA) 12-bit sampler with integrated analog-to-digital converters (ADC), developed in the TSMC 0.25um process. The LAB4D, operating at 3.2GSa/s, contains 4096 total samples arranged in 32 windows, for a total record length of 1280ns. The 3dB bandwidth is approximately 1.3GHz, with a directly-coupled 50ohm input. This represents a factor of 16 increase in the sample depth and an increase in analog bandwidth and sampling depth in comparison to the previous generation LAB3 digitizer. Individually addressable windows allow for sampling and digitization to occur simultaneously, leading to nearly deadtime-free readout for kHz readout rates. All biases and current references are generated via internal digital-to-analog converters (DACs), resulting in a stand-alone digitizer with no additional support circuitry. In addition, the LAB4D contains sample cell timebase trimming capabilities, reducing the intrinsic sample-to-sample time variance to less than 5ps; an improvement of about 80%. This allows the LAB4D to be used in precision timingmore » applications with minimal post-hoc calibration.« less

Authors:
 [1];  [1];  [2];  [1];  [3];  [1];  [4]
+ Show Author Affiliations
  1. Univ. of Hawaii at Manoa, Honolulu, HI (United States)
  2. The Ohio State Univ., Columbus, OH (United States)
  3. Univ. of Chicago, IL (United States)
  4. Univ. of Applied Sciences of Western Switzerland, Delemont (Switzerland)
Publication Date:
Research Org.:
Univ. of Hawaii at Manoa, Honolulu, HI (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1597752
Alternate Identifier(s):
OSTI ID: 1547773
Grant/Contract Number:  
SC0010504
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Volume: 925; Journal Issue: C; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats

Roberts, Jarred M., Varner, Gary S., Allison, Patrick, Fox, Brendan, Oberla, Eric, Rotter, Ben, and Spack, Stefan. LAB4D: A low power, multi-GSa/s, transient digitizer with sampling timebase trimming capabilities. United States: N. p., 2019. Web. doi:10.1016/j.nima.2019.01.091.
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Roberts, Jarred M., Varner, Gary S., Allison, Patrick, Fox, Brendan, Oberla, Eric, Rotter, Ben, & Spack, Stefan. LAB4D: A low power, multi-GSa/s, transient digitizer with sampling timebase trimming capabilities. United States. https://doi.org/10.1016/j.nima.2019.01.091
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Roberts, Jarred M., Varner, Gary S., Allison, Patrick, Fox, Brendan, Oberla, Eric, Rotter, Ben, and Spack, Stefan. Wed . "LAB4D: A low power, multi-GSa/s, transient digitizer with sampling timebase trimming capabilities". United States. https://doi.org/10.1016/j.nima.2019.01.091. https://www.osti.gov/servlets/purl/1597752.
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@article{osti_1597752,
title = {LAB4D: A low power, multi-GSa/s, transient digitizer with sampling timebase trimming capabilities},
author = {Roberts, Jarred M. and Varner, Gary S. and Allison, Patrick and Fox, Brendan and Oberla, Eric and Rotter, Ben and Spack, Stefan},
abstractNote = {The LAB4D is a new application-specific integrated circuit (ASIC) of the Large Analog Bandwidth Recorder and Digitizer with Ordered Readout (LABRADOR) family, for use in direct wideband radio frequency digitization such as is used in ultrahigh energy neutrino and cosmic ray astrophysics. The LAB4D is a single channel switched-capacitor array (SCA) 12-bit sampler with integrated analog-to-digital converters (ADC), developed in the TSMC 0.25um process. The LAB4D, operating at 3.2GSa/s, contains 4096 total samples arranged in 32 windows, for a total record length of 1280ns. The 3dB bandwidth is approximately 1.3GHz, with a directly-coupled 50ohm input. This represents a factor of 16 increase in the sample depth and an increase in analog bandwidth and sampling depth in comparison to the previous generation LAB3 digitizer. Individually addressable windows allow for sampling and digitization to occur simultaneously, leading to nearly deadtime-free readout for kHz readout rates. All biases and current references are generated via internal digital-to-analog converters (DACs), resulting in a stand-alone digitizer with no additional support circuitry. In addition, the LAB4D contains sample cell timebase trimming capabilities, reducing the intrinsic sample-to-sample time variance to less than 5ps; an improvement of about 80%. This allows the LAB4D to be used in precision timing applications with minimal post-hoc calibration.},
doi = {10.1016/j.nima.2019.01.091},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 925,
place = {United States},
year = {Wed Feb 06 00:00:00 EST 2019},
month = {Wed Feb 06 00:00:00 EST 2019}
}
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https://doi.org/10.1016/j.nima.2019.01.091
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Signal processing for picosecond resolution timing measurements
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  • DOI: 10.1016/j.nima.2009.05.193

High resolution photon timing with MCP-PMTs: A comparison of a commercial constant fraction discriminator (CFD) with the ASIC-based waveform digitizers TARGET and WaveCatcher
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