Forum Post: RE: PCM1808 - About a power supply (VCC & VDD) sequence
Hi, Malinovskij,Welcome to e2e, and thanks for your interest in our devices!Several places in the d/s, it refers to VREF = VCC/2, so this means VREF will 100% track any changes in VCC. It is most...
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Forum Post: PCM1680 clock and layout
Hi, I'm using a PCM1680 with a variable, non-standard sample rate. My digital audio processors require an input frequency of 144 times the sample rate and I want to use 512 times oversampling for the...
View ArticleForum Post: RE: lm49350 GUI
Hi, Erick,Interesting, it seems like someone else is having a similar issue. Take a look at this post. Let's move this conversation to that thread. Can you answer the question I posed to Jesus on that...
View ArticleForum Post: RE: TVP5158 4-Ch D1 Super-Frame Format
Hi,I was able to detect only one source out of four (corresponding to source ID 3). what could be the reason ?The data stream consists of two blanking lines with vertical sync in the EAV/SAV fields and...
View ArticleForum Post: RE: How to control PCM codec : TLV320AIC1106 EVM?
Hi, Eddy,You need to program some I2C registers to get the desired signal routing. So, you will need this s/w to control the EVM.-d2
View ArticleForum Post: RE: PCM1680 clock and layout
Hi, Sammy,Welcome to e2e, and thanks for your interest in our products!I suggest you review the EVM (which is unfortunately no longer available) to see how we laid out the board. You can find the users...
View ArticleForum Post: RE: DAC7821 Positive Voltage Supply
Besides the question above, for my circuit I need to handle both high frequency and low frequency signals. And I am using both DAC7821 and ADS1605. Thus I am wondering what the frequency responses for...
View ArticleForum Post: RE: spurious at o/p of DAC3484
Hi Ravi,Can you provide a plot of the spurs?If the spurs are "flickering" and appear at many frequencies, it is likely timing issues with the FPGA to DAC interface. You can try to shift the timing by...
View ArticleForum Post: What is the reference value used to calculate dBFS by the...
Hello.I am using the ADS1299ECG-FE development kit and associated software. My question is a basic one regarding reference values for the analysis software's calculation of a Fourier power spectrum....
View ArticleForum Post: RE: ADS1294R analog output error
Hi Lingfeng,Welcome to the TI E2E Forums!Thanks for the details on your design. I took a look at your configuration settings for the ADS1294R and verified that they were correct. It seems you are...
View ArticleForum Post: RE: ADS1298 test signal
Hello Tom,How much does it influence to have Daisy_in open? Can it generate severe noise issues?Regards,
View ArticleForum Post: RE: Mic input noise with AIC3204 and AIC3254
Hi Amit,Seems like you are using Windows 8. We have not tested the EVM with that operating system, so we are not certain if the issue is due to that or not.Regards,J-
View ArticleForum Post: ADS1675 SCLK frequency
Hi all,I want to understand how an external SCLK can be delivered to ADS1675 to retrieve 24 bits @ 1MSPS, where i can find this info on datasheet?If i have 1MSPS so DRDY pulse comes every us, i have to...
View ArticleForum Post: TAS5548EVM does not connect
Received my TAS5548EVM. Installed all the software. When I press the connect button I get an error message "could not connect to device". It is connected with the USB cable and the blue and green...
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Forum Post: RE: Problem communicating with ADS1259 using MSP430 SPI
Hi David,I'm not familiar with the above code, but I did find information about "IFG2" from the MSP430F22x2 datasheet. It's an interrupt flag. Regards,Chris
View ArticleForum Post: RE: ADS1672EVM-PDK Problem
Herwig -Yes, your interpretation of the layers is correct. Whether the power layer the second layer or the ground layer is second, we will need to try and dig up the design files. It shouldn't...
View ArticleForum Post: RE: Pros and cons of Unipolar/Bipolar power supplies for ADS1299?
Hi Alex,In terms of performance, there really is no difference.I think what you need to be concerned with is the acceptable voltage ranges for your input channel pins. With a single-ended supply of 0-5...
View ArticleForum Post: RE: Questions about ADS1258
Hi Bailin,Welcome to the TI E2E forums!Please see this excel calculator I put together to see how the DR, CHOP, and DLY register settings will affect the data rate: (Please visit the site to view...
View ArticleForum Post: RE: DAC3482EVM rework to support HSMC interface
Hi Pete,Let me look into this.Regards,Matt Guibord
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