Texas Instruments DAC348 Series Скачать руководство пользователя страница 19 | Manualshive

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Texas Instruments DAC348 Series Скачать руководство пользователя страница 19

Basic Test Procedure with TSW3100

Figure 18. TSW3100 CommSignalPattern (WCDMA) Programming GUI for DAC3482, DAC34H84, and

DAC34SH84

19

SLAU432

–

February 2012

DAC348x EVM

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Copyright

©

2012, Texas Instruments Incorporated

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Содержание DAC348 Series

Страница 1: ...List of Figures 1 DAC348x EVM Block Diagram 3 2 Input Control Option 4 3 PLL Configuration 6 4 Digital Block Options 7 5 Output control Options 8 6 CDCE62005 Tab Configured for 4x Interpolation 9 7 US...

Страница 2: ...ase of use as a complete IF transmit solution the DAC348xEVM includes the Texas Instruments CDCE62005 clock generator jitter cleaner for clocking the DAC348x Besides providing a high quality low jitte...

Страница 3: ...t pin out location YA Y1 for DAC3484 and DAC3482 EVMs Y2 for DAC34H84 and DAC34SH84 EVMs YB Y2 for DAC3484 and DAC3482 EVMs Y1 for DAC34H84 and DAC34SH84 EVMs 5th Order LPF 5th Order LPF 5th Order LPF...

Страница 4: ...used to configure the DAC348x and the last for the CDCE62005 2 2 1 Input Control Options Figure 2 Input Control Option FIFO allows the configuration of the FIFO and FIFO synchronization sync sources...

Страница 5: ...the Single Sync Source Mode in the relevant DAC348x data sheet for details For multiple device synchronization select the OSTR signal as the FIFO output synchronization source If the DAC is configure...

Страница 6: ...4GHz 5 For the DAC34SH84 Set the prescaler such that the FDAC x prescaler is within 2 7GHz and 3 3GHz 6 Set VCO Bias Tune to 1 7 Charge Pump setting a If stability P x M is less than 120 then set to...

Страница 7: ...y for each I Q channel This is useful for wideband sideband suppression Note This feature is not available for the DAC34SH84 Offset Adjustment allows adjustment of dc offset to minimize the LO feed th...

Страница 8: ...r sync must be enabled with OSTR set as sync source Refer to the datasheet for OSTR period requirement SYNC sync from the external SYNC signal SIF SYNC sync from SIF Sync Uncheck and check the SIF Syn...

Страница 9: ...ion 8 See the DAC348x data sheet for more details The whole OSTR clock equation needs to take account of both the Y1 CDCE62005 clock divider ratio and the additional CDCP1803 divide by 2 clock divider...

Страница 10: ...n File Released folder and respective sub folders for the EVM Double click on the desired register file Click on Send All to ensure all of the values are loaded properly Save Regs Saves the register c...

Страница 11: ...um LVDS bus rate of 1 5 GSPS and this allows evaluation of the DAC348x with maximum 750 MSPS of input data rate per channel See the TSW1400 user s guide SLWU079 for more detailed explanation of the TS...

Страница 12: ...P13 short SPI connection break point This allows routing of SPI connection to external system if troubleshooting is needed JP10 1 2 6V Input Select Default is 6V at J18 JP11 open For DAC34H84 SH84 EVM...

Страница 13: ...g device in the Select DAC menu Figure 10 Select DAC348x Devices in the High Speed Converter Pro GUI Program 2 When prompted Load DAC Firmware select YES Figure 11 Load DAC Firmware Prompt 3 Click on...

Страница 14: ...Hanning for Window 7 In the DAC Selection panel on the left side of the GUI click on Send to load the data into memory 8 Toggle the SIF SYNC button of the DAC348x EVM GUI to synchronize the appropriat...

Страница 15: ...an 25 5 MHz 2 55 MHz 110 100 90 80 70 60 50 40 30 20 Tx Cha nne l W C DMA 3G PP FWD Ban dwi dth 3 84 MHz P o w e r 7 5 2 d B m Adj ace nt Cha nne l Ban dwi dth 3 84 MHz L o w e r 7 8 9 5 d B Spa cin g...

Страница 16: ...that the TSW3100 software is installed and functioning properly The TSW30SH84 needs TSW3100 operating software version 2 5 or higher with TSW3100 board Rev D or higher The DAC348xEVM sends the FPGA r...

Страница 17: ...p Procedure See the DAC348x Example Setup Procedure section 4 5 TSW3100 Example Setup Procedure Reference the TSW3100 User s Guide SLWU079 for more detailed explanations of the TSW3100 set up and oper...

Страница 18: ...ify the spectrum using the Spectrum Analyzer at the four IF outputs of the DAC348x EVM J7 J6 J3 and J2 For the DAC3482 EVM the IF outputs are at the J6 and J3 SMA connector The expect results are show...

Страница 19: ...cedure with TSW3100 Figure 18 TSW3100 CommSignalPattern WCDMA Programming GUI for DAC3482 DAC34H84 and DAC34SH84 19 SLAU432 February 2012 DAC348x EVM Submit Documentation Feedback Copyright 2012 Texas...

Страница 20: ...er DAC DAC34SH84 SLAS808 Five Ten Output Clock Generator Jitter Cleaner With Integrated Dual VCO CDCE62005 SCAS862 5 2 Related Tools From Texas Instruments TSW1400 High Speed Data Capture Pattern Gene...

Страница 21: ...ncy energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC or ICES 003 rules which are designed to provide reasonable protection against radio fr...

Страница 22: ...ential radio interference to other users the antenna type and its gain should be so chosen that the equivalent isotropically radiated power e i r p is not more than that necessary for successful commu...

Страница 23: ...oduct only after you obtained the license of Test Radio Station as provided in Radio Law of Japan with respect to this product or 3 Use of this product only after you obtained the Technical Regulation...

Страница 24: ...property damage personal injury or death If there are questions concerning these ratings please contact a TI field representative prior to connecting interface electronics including input power and in...

Страница 25: ...or use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury or death unless officers of the parties have...

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