Re: How can I add more I/O assignments in Sigma Studio
Thanks for your help.Significant progress has been made.My application is half running on the ez-board.I would like to move some of the i/o that is predefined in the ADSP-21479 loader.What is the...
View ArticleFMCOMMS2 Active Monitoring
Hi, I am going to be setting up two ZC702s with FMCOMMS2 attracted. One AD9361 is going to be hit with radiation while the other documents the accuracy of the outputs. My current plan is to have both...
View ArticleRe: OP37
Thaddeus, You're welcome!! One little tweak. The thermal noise of a 10k resistor at room is about 12 nV/rt-Hz.The OP27 flatband noise is about 4 nV/rt-Hz, so you are not taking advantage of the op...
View ArticleRe: OP37
Thaddeus, The title is OP37, but your schematic shows OP27. The pc board photo looks like an OP37.You are onlly running a noise gain 3-4 so you really need an OP27. The OP37 should oscillate.If...
View ArticleMod/Demod IQ Selection
I'd appreciate a recommendation of your mod & demod chips (even better if you have mod/demod IQ to 2.4GHz RF in one chip - we'd just drop two of them down to cover the MIMO requirement.) We aren't...
View ArticleRe: My DSP/DAC Project
You really need to have four layers so you can have either two ground planes or a ground plane and a power plane. This is required to keep the impedance on the signal lines somewhat constant. The...
View ArticleRe: FMCOMMS3 with KC705 eval
1. Yes- you can simply insert any processing entities on that path. It runs approx. at 250MHz/16bits of I/Q each (64 total). The effective rate is about 62.5MHz. Make sure your entities are capable of...
View ArticleRe: AD8310 slope temperature stability
Hello Johann, I'll start off by saying I don't think we have distribution data over temperature and frequency for the AD8310. Having said, I think we can piece together a pretty good idea of how much...
View ArticleRe: Blackfin Hibernate Hardware
Hi Ian. The reason for this is due to the inner workings of the Blackfin processor itself. Intuition would suggest exactly as you detail above, but the part you are missing is perhaps lost in context...
View ArticleRe: AD9361 BBPLL fails to lock on prototype
Ah I was probing the wrong pin. But I am probing directly on the via's next to the BGA balls. There is no SPI clk noise on VDDA1P3_BB, but it does drop about 10mV with a transient when the bbpll...
View ArticleSigmaStudio Bugs
SigmaStudio Version 3.9 Build 2. Rev 1246 7/24/2013Computers used both 64 & 32 bit Windows 7 Sometimes when Im working with SigmaStudio, the software bugs out and I loose the ability to open graphs...
View ArticleRe: SigmaStudio Bugs
You changed your zoom. Probably with Ctrl+Mouse WheelThe menu options for restoring to 100% have been gone for a while, lucky there is a keyboard shortcutCtrl+Shift+F6 If your zoom is anything but...
View ArticleRe: ADE7953 SPI Problems
Hi DDSchrader Good to hear that your problem has been resolved! For calibration process and register setting details, this App note will guide you step-by-step. Calibration is for removing fixed system...
View ArticleRe: ADE7878 Can't start DSP
Hi Dan I would be willing to assist you with your query. It is definitely strange that you are not able to read back 0x01 when you read the RUN register, even after you have set it to 0x01. One way to...
View ArticleRe: EVAL-ADE7753 Software error
Hi amrnasser I am delighted to know that you made the Evaluation software work! But I am not sure if I am understanding the current problem clearly. Are you saying that you need a tutorial to help...
View ArticleADE7878
I am using ADE7878 for Energy meter purpose. I have started communication b/w ADE7878 & my micro controller. When i read Voltage RMS registers, values are reading from the registers when i apply...
View ArticleRe: invalid or corrupts ramdisk??
thanx larsc...i figured out that i was missing a key step in the speedway tutorial...it was the change that had to be made in the zynq_common.h file in u-boot-xlnx/include/configs/ folder....it was to...
View ArticleRe: My DSP/DAC Project
Hi Dave,Thanks again for stopping by and dropping a few words of wisdom. Since then I moved away from the pin header and went with UFL connectors instead, so a few things have changed. Filter Caps are...
View ArticleRe: Mod/Demod IQ Selection
Here are some options that will cover the 2.4 GHz bandIQ Mod: ADL5375IQ Demod: ADL5380 or ADL5382PLL to drive LO Ports: ADF4351IQ Mod with integrated PLL: ADRF6703IQ Demod with integrated PLL:...
View ArticleAN-564 ADE7756 Voltage connection
Figure 1 indicates that the voltage sampling connection is made across L1 and L2, and no connection to the neutral. Figure 16 shows connection to L1 and AGND via resistor R9 and C7. Shouldn't V2N be...
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