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e2v AT84AS003-EB User Manual

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AT84AS003-EB Evaluation Board
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User Guide

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Summary of Contents for e2v AT84AS003-EB

  • Page 1 AT84AS003-EB Evaluation Board ....................User Guide...

  • Page 3: Table Of Contents

    DMUX Function..................4-4 Diode for Die Junction Temperature Monitoring ........4-7 Test Bench Description ................4-10 Section 5 Package Information................5-1 Thermal Characteristics ................5-1 Section 6 Ordering Information................6-1 Section 7 Appendix....................7-1 AT84AS003-EB Electrical Schematics .............7-1 AT84AS003-EB Evaluation Board User Guide 0905C–BDC–09/07...
  • Page 4 AT84AS003-EB Evaluation Board User Guide 0905C–BDC–09/07...

  • Page 5: Introduction

    12 jumpers for ADC and DMUX function settings (SDAEN, B/GB, PGEB, RS, BIST, CLKTYPE, DRTYPE, SLEEP, STAGG, DAEN) The user guide uses the AT84AS003-EB Evaluation Kit as an evaluation and demon- stration platform and provides guidelines for its proper use.
  • Page 6 The board dimensions are 220 mm × 240 mm. The board comes fully assembled and tested, with the AT84AS003 installed and with a heat sink. Figure 1-1. Simplified Schematics of the AT84AS003-EB Evaluation Board VINN DAO/DAON DAI/DAIN 3.3V...

  • Page 7: Hardware Description

    Layer 6 Layer thickness = 200 µm FR4 HTG/dielectric layer Layer 7 Copper thickness = 35 µm Copper layer Power planes = VEE and 3.3V Layer 8 Layer thickness = 170 µm FR4 HTG/dielectric layer AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...

  • Page 8: Analog Inputs/Clock Inputs

    50 mm max line length 1.27 mm pitch between the differential traces 400 µm line width 40 µm thickness 850 µm diameter hole in the ground layer below the VIN and VINN ball footprints AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...

  • Page 9: Digital Outputs

    370 µm µm 400 µm 200 µm RO4003 Ground plane µm The digital outputs are compatible with LVDS standard. They are on-board 100Ω differ- entially terminated as shown in Figure 2-4 on page 2-4. AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...
  • Page 10 Figure 2-5. Differential Digital Clock Outputs 2.54 mm Pitch Connector (Example Port A) Signal Ground … AORN /DR A /DRA N GND A0N A0 AORN AOR GND B0 GND GND GND GND GND GND GND GND AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...

  • Page 11: Operating Characteristics

    (to avoid saturation of the ADC). The analog input frequency can range from DC up to 1.8 GHz. At 3 GHz, the ADC attenuates the input signal by 3 dB. 4. Connect the high-speed acquisition system probes to the output connectors. AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...
  • Page 12 7. Switch on the RF clock generator. 8. Switch on the RF signal generator. 9. Perform an asynchronous reset (ASYNCRST push button) on the device. The AT84AS003-EB evaluation board is now ready for operation Table 3-1. Absolute Maximum Ratings Parameter...
  • Page 13 Analog input power level (50Ω single-ended) Analog input capacitance (die) Input leakage current µA Input resistance Ω - Single-ended Ω - Differential Clock Inputs Logic common mode Differential ECL to LVDS compatibility for clock inputs (AC coupling) AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...
  • Page 14 10 K Infinite SDAEN, PGEB, B/GB - Logic low - Logic high DAI, DAIN IDIFF 1.25 Differential Input – common mode GA, SDA -0.5 CLKDACTRL, DACTRL 1/3 × V 1/3 × V 2/3 × V AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...

  • Page 15: Application Information

    50Ω cap to provide proper termination of the differential pair. The clock can be supplied with a sinewave signal centered on 0V common mode. Digital Outputs The digital outputs (data and Data Ready) are LVDS compatible. 100Ω differential termi- nation is provided on-board. AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...

  • Page 16: Adc Functions

    One jumper is used to set the ADC output coding mode in either Binary or Gray: Output Coding Binary coding: connect the jumper to ground Gray coding: connect the jumper to the upper position (see Figure 4-2) Figure 4-2. Binary or Gray coding Jumper Position Binary Gray Coding Coding AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...
  • Page 17 TA around its nominal value (160 ps). This functionality is enabled thanks to the SDAEN signal, which is inactive when its associated jumper is connected to GND, or active in the other position AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...
  • Page 18 One jumper is used to set the ADC in this Test mode: Pattern Generator inactive: connect the jumper to ground Pattern Generator active: connect the jumper to the upper position (see Figure 4-3 on page 4-3) AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...

  • Page 19: Dmux Function

    DMUX input. The delay is controlled via the CLKDACTRL potentiometer. This cell allows you to delay by ±250 ps (around 250 ps) the internal DMUX clock via the CLKDACTRL potentiometer (varying from V /3 to (2 × V )/3). AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...
  • Page 20 Figure 4-10. DACTRL Funtion 3.3V 10 KΩ AT84AS003 10 KΩ 10 KΩ 4.6.4 RS, DRTYPE, DAEN, Seven Jumpers are provided for the RS, DRTYPE, DAEN, BIST, CLKTYPE, SLEEP BIST, CLKTYPE, and STAGG functions. SLEEP, STAGG AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...
  • Page 21 Note: The BIST is made of a 10-bit sequence available on all 4 ports of the device (set the AT84AS003 in 1:4 mode). The sequence is as follows: Cycle 0: Port A = 1010101010 AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...

  • Page 22: Diode For Die Junction Temperature Monitoring

    The 1 mA current can be supplied by a multimeter set in this specific current source mode, in this case, the voltage measured between the diode pin and ground is displayed on the multimeter. The Diode characteristic of the ADC is given in Figure 4-14 on page 4-9. AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...
  • Page 23 Application Information Figure 4-14. ADC DIODE Characteristics (1 = 1 mA) Junction Temperature Versus Diode Voltage for I =1 mA Junction Temperature (˚C) AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...

  • Page 24: Test Bench Description

    Fs = ADC sampling data clock source --> Fs AT84AS003 Power supplies Acquisition Board GW PPT ADC 10BIT 1.5 Gsps Power supplies DEMUX GW PPT D0 --> D9 8 channel Clock GPIB bus HP16500C analysis logic 4-10 AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...

  • Page 25: Package Information

    Use an external heat sink with intrinsic thermal resistance better than 3°C/Watt when using air at 60°C. Notes: 1. No air, pure conduction, no radiation 2. Jedec condition, still air, horizontal air (board sign = 1.6 mm) AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...
  • Page 26 Package Information AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...

  • Page 27: Ordering Information

    Commercial "C" grade Standard EBGA 317 AT84AS003CTPY RoHS 0°C < T < 90°C Industrial "V" grade Standard EBGA 317 AT84AS003VTPY RoHS -20°C < T < 110°C AT84AS003TP-EB EBGA 317 Ambient Prototype Evaluation kit AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...
  • Page 28 Ordering Information AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...

  • Page 29: Appendix

    Section 7 Appendix AT84AS003-EB Electrical Schematics Figure 7-1. Power Supplies Decoupling DECOUPLING DECOUPLING DECOUPLING DECOUPLING DECOUPLING DECOUPLING AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...
  • Page 30 Appendix Figure 7-2. Power Supplies Connection Figure 7-3. Power Supplies bypassing AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...
  • Page 31 Appendix Figure 7-4. AT84AS003-EB Electrical Schematic AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...
  • Page 32 Appendix AT84AS003-EB Board Layers Figure 7-5. Top Layer Figure 7-6. Bottom Layer AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...
  • Page 33 Appendix Figure 7-7. Equipped Board (Top) Figure 7-8. Equipped Board (Bottom) AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...
  • Page 34 Appendix AT84AS003-EB Evaluation Kit User Guide 0905C–BDC–09/07...
  • Page 35 Whilst e2v has taken care to ensure the accuracy of the information contained herein it accepts no responsibility for the consequences of any use thereof and also reserves the right to change the specification of goods without notice. e2v accepts no liability beyond that set out in its stan- dard conditions of sale in respect of infringement of third party patents arising from the use of tubes or other devices in accordance with informa- tion contained herein.

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