TDC-GPX

GENERAL FEATURES

  • PC supported system; communication via PCI interface
  • External ATMD-MB motherboard with AM-GPX (8 channels 81 ps resolution, 2 channels with 40 ps, 27 ps, or 10 ps resolution)
  • No additional power supply for the external motherboard. The power supply is provided by the interconnecting cable
  • Comfortable Windows software
  • User specific software can be written in every programming language
  • 2 operating modes (for details see the datasheets)
  •    a: AT-Bus polling mode up to approx. 200k measurings per second (without graphical display)
  •    b: Burst mode, up to approx. 1 Mio. measurings per second (peak, without graphical display)
  • On board measurement cache as FIFO. It can store up to 32 K measurements on average (1 K default)
  • External board with metal housing

It's modular and all-around open architectural system enables the ATMD to serve as an evaluation-kit as well as a complete and efficient measurement instrument.



    CUSTOMER-SPECIFIC INTEGRATED TDCs

    The use of pure digital circuit design makes it easy to build on the performance features of the standard products and improve specific technical data. Accordingly, acam develops optimized TDC's which are tailored to the specific measuring requirements of the customer.

    • Additional measuring modes
    • Additional mathematical operations for on-chip data processing (e.g. high performance 32 floating point units with focus on low power consumption)
    • Memory (FIFO, EEPROM...)
    • Various interfaces
    • µC cores

    The wealth of experience acam has gathered assures the ability to integrate all necessary funtions on a single circuit and so to provide a system-on-chip solution.


      IMPLEMENTATION EXAMPLES

      TDC-S1 is a TDC with 25ps standard deviation for use in the ATV (Automatic Transport Vehicle) that will supply the ISS (International Space Station). The high resolution is all the more impressive as this TDC is realized on a radiation hard process.

      DFA1 Integrated circuit for detection of the rotation of a propeller meter with extremely low current consumption (<2uA) - contacless, non-magnetic und feedbackless.


      CUSTOMER-SPECIFIC SYSTEMS

      On the base of the ATMD-System we also develop complete solutions and additional modules to fit your application.

      Take as an example the AM-HM1 histogramming module, that was developed for RoentDek. This is a standalone PC-based 4-channel TDC with 32MB Histogram memory for fast readout of Delay-Line-Detectors developed by RoentDek. For more information, please contact RoentDek.

      Another example is the Time-of-Flight Module offered by GPTA (Gesellschaft für physikalisch-technische Anwendungen). The key features of this module are virtually dead time free operation, 5 ns multihit dead time in 1 channel mode, (60±5) ps maximum resolution, an input for multicard coincidence measurements. For more information, please email sales@gpta.de

      TIME-OF-FLIGHT MODULE
      TDC-SI MODULE
      AM-HMI-HISTOGRAMMING MODULE
      DescriptionVersionSizeDownload
      Datasheet TDC-GP22 Eval System:
      Preliminary datasheet for TDC-GP22 evaluation system
      V0.25.3MBDB_GP22-EVA_en.pdf
      Datasheet TDC-GP22:
      Datasheet for TDC-GP22 Time-to-Digital Converter
      V0.94MB
      Datasheet TDC-GP21 Eval System:
      Preliminary datasheet for TDC-GP21 evaluation system
      V0.25.3MB
      Datasheet TDC-GP21:
      Datasheet for TDC-GP21 Time-to-Digital Converter
      V1.64MB
      Datasheet TDC-GPX:
      ATMD evaluation system for TDC-GPX (DISCONTINUED)

      1.3MB
      Datasheet TDC-GP1:
      2-channel TDC, 250 ps/125 ps

      1MB
      Datasheet TDC-GP2:
      2-channel TDC 65 ps
      V2.02.6MB
      Datasheet TDC-GPX2 Eval System:
      Preliminary datasheet for TDC-GP22 evaluation system
      V0.22948kB
      Datasheet TDC-GPX2:
      4-Channel Time-to-Digital Converter
      V0.21979kB
      Datasheet TDC-GPX:
      8-channel TDC 81 ps, 2-channel TDC 41 ps/27 ps/10 ps
      V0.2800kB
      DescriptionVersionSizeDownload
      Application Note 034:
      Laser Range Finder with the TDC-GP22
      V1.3837kBAN034_en.pdf
      Application Note 027:
      TDC-GP2 to TDC-GP21 Migration and Compatibility Guideline
      V0.1400kBAN027_en.pdf
      Application Note 024:
      Metrological Investigations of TDC-GP2 Temperature Measurement Unit
      V1.01.2MBAN024_en.pdf
      Application Note 016:
      TDC-GPX Reduced Decoupling
       73kBAN016_en.pdf
      Application Note 013:
      TDC-GPX - PLL Regulation Circuit
      V3.0100kBAN013_en.pdf
      DescriptionVersionSizeDownload
      Software TDC-GPX2:
      Evaluation software package for GPX2 (incl. doc, cfg, drv)
      V1.0.5206MBCD-GPX2-EVA.zip
      Software TDC-GP22:
      STM32 µC Sample code of Application Note 034
       42kBGP22_main_AN034.c
      Software TDC-GP22:
      Software package for GP22-EVA-KIT
      V1.9111MBCD-GP22-EVA-XP-WIN7.zip
      Software TDC-GP21
      Software package for GP21-EVA-KIT
      V3.9104MBCD-GP21-EVA-XP-WIN7.zip
      Software TDC-GPX:
      Evaluation software for ATMD-GPX
      V4.018MBATMD-GPX.zip
      Software TDC-GPX:
      Visual-C++ sample code for ATMD-GPX
       214kBATMD-GPX-C-samples.zip
      Software ATMD-PCI:
      Driver files for ATMD-PCI interface card
       2kBAcamAtmdPci.zip
      Software PICOPROG V3.0 (V2.0):
      Driver Installer Stand-Alone
      R115MBPicoProg_v2_Driver_Installer_Stand-Alone.zip
      Software National Instruments:
      NI VISA instrument drivers
      V3.012MBni-visa.zip
      Software National Instruments:
      NI VISA runtime engine for Windows 7
      V4.6253MBvisa462runtime.exe
      Software National Instruments:
      NI VISA runtime engine for Windows Vista
      V4.141MBvisa410full.exe
      Software National Instruments:
      NI VISA runtime engine for Windows XP
      V3.214MBvisa320runtime.exe
      Software National Instruments:
      NI VISA runtime engine for Windows 98
      V2.68MBvisa260runtime.exe
      DescriptionVersionSizeDownload
      PCN/PDN TDC-GP1
      Pd-free package
      V167kBPCN0104.pdf
      PCN/PDN TDC-F1
      Pb-free package
      V149kBPCN0204.pdf
      PCN/PDN TDC-F1
      Discontinuation of production
      V168kBPDN0711-01.pdf
      PCN/PDN ATMD-GP1
      Discontinuation of production
      V134kBPDN1009-01.pdf
      TDC MEASURING METHOD

      INTEGRATED DIGITAL TIME-TO-DIGITAL CONVERTERS

      (click to enlarge)


      Digital delay time TDCs are integrated circuits for high precision time interval measurement and do this without any analog components. They became real thanks to the innovations in semiconductor technology made over the years. They use the propagation delays of simple logical gates (i.e. inverters) for fine quantization of time intervals. Due to the enormous achievements in signal speed, especially in the CMOS sector, it has become possible to implement

      such TDCs in standard CMOS technology with a resolution in the picosecond range. Nowadays we can integrate system solutions into a single chip that are efficient, power saving, space saving and none the less low price.

      Digital TDCs can be split into two groups:

      • Absolute delay time TDCs
      • Relative delay time TDCs


      ABSOLUTE DELAY TIME TDC

      This type of TDC uses the absolute propagation time of signals through simple logical elements for fine quantisation of time intervals. (see figure below)

      In other words, it determines how many inverter cycles the measured time interval consists of. The figure shows the principle of operation. Clever circuit set-ups, redundant elements and special layout methods on the chip enable the exact reconstruction of the number of basic time intervals. The resolution strictly depends upon the basic delay time in the chip. Resolutions in the range of 14 -100 ps can be achieved by a simple set-up of the measuring core and the use of a state-of-the art CMOS process. The propagation delay itself depends on temperature and supply voltage. Therefore the measured value must be calibrated. This is done by measuring one and two periods of a reference oscillator. Ideally this measurement and the following calculation is done by the TDC itself.

      Absolute delay time TDCs have the following advantage:

      • The delay time of the inverter can be precisely adjusted and stabilized by using a phase controlled loop (PLL). It is independent from supply voltage and temperature.
      • Good pulse-pair resolution
      • Multi-hit capability

      (click to enlarge)


      TypePart numberPackageRoHS compl.Shipping package
      TDC-GP22:
      TDC-GP22MNR 1949QFN32YesTray
      TDC-GP22MNR 1950QFN32YesTape & Reel (5k)
      GP22-EVA-KITMNR 1951SystemYesBox
      GP22-DEMO-KITMNR 1979SystemYesBox
      TDC-GP21:
      TDC-GP21MNR 1839QFN32YesTray
      TDC-GP21MNR 1720QFN32YesTape & Reel (3K/5K)
      GP21-EVA-KITMNR 1781SystemYesBox
      TDC-GP2:
      TDC-GP2MNR 1058QFN32YesTray
      TDC-GP2MNR 1480QFN32YesTape & Reel (2k)
      TDC-GP1:
      TDC-GP1MNR 278TQFP44YesTray
      TDC-GPX:
      TDC-GPXMNR 975TQFP100YesTray
      TDC-GPX-FGMNR 1089TFBGA120YesTray

      ADDITIONAL INFORMATION