Forum Post: RE: ads1256: how to compensate capacitance change when change PGA
Hi Jari,That op amp compenstation scheme makes more sense.I'd also be careful to keep the ground connections to AIN2-AIN7 clean with a short connection/multiple vias to a solid PCB ground plane...
View ArticleForum Post: RE: AIC3256 Setup I2C
Hi Johnny,I suggest you verify:1) If code is working properly.2) If register settings correspond to the setting in your board.For #1, I suggest you use an I2C sniffer tool to cross-check that the data...
View ArticleForum Post: RE: Question for the Sidelobe noise and PLL Unlock of DAC3484
Hi Jayden,As I have mentioned in the previous response, it is not possible to use on-chip DAC3484 PLL with 138.24MHz input, and 2x interpolation due to the internal VCO range. If the customer would...
View ArticleForum Post: AMC7823 Reset release to ready
I am unable to determine from the AMC7823 data sheet the time from release of the reset pin to the device being ready to receive commands.Is this information available?
View ArticleForum Post: RE: HSMC-ADC Bridge Rev A with ADS6445EVM
Hi,We can swap out your revA hardware for the revB hardware. Actually, we have just gone to rev C which is the same as the revB except that the ADC connector was uograded to the locking Samtec...
View ArticleForum Post: TVP5158 4-channel D1 pixel-interleaved format questions
I'm currently writing some FPGA code to de-interleave the 4-channel D1 TVP5158 output and have a few questions:(1) The 4-ch pixel-interleaved mode timing diagram on page 23 of the TVP5158 datasheet...
View ArticleForum Post: RE: TLV320AIC3104EVM-K
Hi Gerhard,Glad to hear it! The instructions for win7 drivers will be added in that update.Well, let me understand a little bit more about what you are trying to do. What is the input for your system?...
View ArticleForum Post: RE: ADS1278-EVM channel full scale negative
Are you using the EVM in your own configuration or with the -PDK and software?Are you using the buffers or direct input to the ADC?Have you changed any of the jumpers from the default configuration?If...
View ArticleForum Post: RE: TLV320AIC3104 MCLK duty
Other than 50% duty cycle for MCLK should be ok as long as time-high or time-low doesn't exceed the timing shown for BCLK in Figure 3 on page 13 of the datasheet.
View ArticleForum Post: RE: DAC stuck AIC3106
Hi Vincent,I guess I am a little confused because the biquad filter coefficients only accept one format:See Attached.
View ArticleForum Post: RE: Question for output control of DAC5688/DAC5689
Hi~Thank you your answer.I found your commect to DAC5688/5689 Datasheet"If DACA channel is in sleep mode (sleepa = '1') the DACB channelis also forced in to sleep mode"If we will use DAC3482, Can we...
View ArticleForum Post: RE: ADS1258 Noise Issues
Hi Martin,By chance are you using any filtering components between the MUXOUT/ADCIN pins that could be removing the noise when you re-route the input signal?Otherwise, it's very odd that increasing a...
View ArticleForum Post: RE: TVP5150AM1 VITC slicing errors
Hi Tommy,I haven't done much more on the VITC reading problem since my last post. Exchanging the documented RAM configuration values for PAL and NTSC seems to have fixed the problem for me. I deduced...
View ArticleForum Post: RE: Help with SPI code for ADS1231
Hi Bob,Recently, I used ADS1231 in my project too. And now I cannot get the zip file from the ftp.Can you sent it to me? My email is tclwl@163.comBest regards;tclwl L
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Forum Post: ADS1248 doubts about driver, commands and work.
Hello,I'm writing because I have troubles regarding communications with the ADS1248. As I do'nt have any SPI bus free in my uC (PIC32MX775F256H), I coded de transmission by myself (maybe this is my...
View ArticleForum Post: RE: ADS42xx/58C28EVM spi communication from fpga does not seem to...
Hi,Ok I feel a bit stupid now, the fault was my own.I had a function that wrote to the spi module the data to write out, but the write function was not blocking. So when I had multiple register writes...
View ArticleForum Post: RE: AIC3256 Setup I2C
Hello J,Thank you for the fast reply. I have made some progress, but I'm still having problems with the configurations. I do not have the I2S signals connected. My Hardware:The board I'm testing out is...
View ArticleForum Post: RE: ADS131E06 initialisation problem
Mr Tromp -What is your power up sequence?Have you reference the power-up sequence on page 51 of the datasheet?What value are you using for the VCAP1 capacitance?In addition to the datasheet power up...
View ArticleForum Post: RE: ADS 1298 ECG PDK installation problem
Sajmal-May we contact you via the email in your account for more information?
View ArticleForum Post: RE: ADS42JB69 EVB about SNR
Hi,When you have no input, (called idle-channel) the reported SNR will not be 0 dBFS due to the definition of dBFS. You may want to choose to disply the SNR in dBc instead of dBFS and see if that is...
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