• 

  Neeraj Gill

  • over 1 year ago
  • Data converters
  • Data converters forum

  RE: ADC12D1800: What is the best measurement setup to introduce bandwidth mismatch spurs in the ADC12D1800 DES mode?

  Hi Yang, Sorry there is not a good way to test this you will have top provide 2 differential signal externally probably from the same source with same length/phase matched cables. Regards, Neeraj
• 

  Jim Brinkhurst1

  • over 2 years ago
  • Data converters
  • Data converters forum

  RE: ADC12D1620QML-SP: Measured ENOB Much Lower Than Data Sheet at Higher Frequencies

  Hi Scott Based on your FFT results and my testing it looks like your performance is being limited by HD2 (folds to 320 MHz) and the Fs/2-HD2 (1280 - 320=960 MHz). In my testing I am not able to get the standard interleaving spurs (Fs/2-Fin, Fs/4+Fin...
• 

  Jim Brinkhurst1

  • over 2 years ago
  • Data converters
  • Data converters forum

  RE: ADC12D1800RF: Second Nyquist image

  Hi Dan Here is some preliminary data. I am using the ADC12D1600RFRB evaluation board, with external clock at 1150 MHz, so Fs is 2300MSPS. Fin is at 1797.77MHz adjusted to around -0.5dBFS. I did a first measurement in DESI mode using a lab quality balun...
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  Sergio Fernandez

  • over 5 years ago
  • Data converters
  • Data converters forum

  Driving ADC10D1500 in DESIQ mode

  • Resolved

  see that Board F has 0.22uF capacitors. However, in " TC1 - DESIQ - SBB User Guide" and schematic, that I
• 

  UBWiNS Lab

  • over 4 years ago
  • Data converters
  • Data converters forum

  Using the "TC1 DESIQ Single Balun Board" in the reverse direction

  TI Thinks Resolved

  The description here says that "It takes a single-ended signal (SMA input) and can drive the I+, I-, Q+ and Q- inputs ...". I was wondering if this can be used in the reverse direction i.e. given the four I+, I-, Q+ and Q- as inputs, get the...
• 

  bridget yu

  • over 6 years ago
  • Data converters
  • Data converters forum

  RE: confirm ADC chips embedded on ADC0XD1520RB could not be powered up and look for possible solutions

  Hi Jim, Thank you very much for your reply. To order proper peripheral devices cooperating with ADC0XD1520RF (using ADC08D1520), i would like confirm two points with you. 1. Whether we need external clock and clock trigger port need to be DC-blocked...
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  Marjorie Plisch

  • over 8 years ago
  • Data converters
  • Data converters forum

  RE: ADC12D1600_Balun

  Hi Lei, We provide a balun board for driving and testing the DESIQ Mode, which uses the TC1-1-13MA+ balun. The schematics, which show the pin connection, are available on the web page. http://www.ti.com/tool/tc1-desiq-sbb Kind regards, Marjor...
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  Victor Levandovsky

  • over 8 years ago
  • Data converters
  • Data converters forum

  ADC12D1800: Balun Board for DESIQCLK Mode

  • Resolved

  3, ADC-WB-BB, ADC-LD-BB and TC1 - DESIQ - SBB ) but without support this mode. From TC1 - DESIQ - SBB
• 

  Marjorie Plisch

  • over 7 years ago
  • Data converters
  • Data converters forum

  RE: ADC-D1800RF mode for chirp from 1.1 to 1.8 GHz

  Hi Gregory, You can also use DESIQ Mode which is easier to drive than DESCLKIQ Mode and is recommended for your application; see the attached report for additional information about driving modes of the GSPS ADC. 5722.TI GSPS ADC Driving for High...
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  Marjorie Plisch

  • over 7 years ago
  • Data converters
  • Data converters forum

  RE: ADC12D1800RFRB - WaveVision shows the sampling frequency in FFT

  Hi Juri, Thanks for including the screen shot; this makes the issue much easier to debug. From this, I can see that you are in DESCLKIQ Mode with the ADC12D1800RFRB. There are two things which are likely a problem with the setup: 1. It is not possible...

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