Forum Post: RE: ADS1256: ADS1256 and TM4C129 SSI communication issue
Hi Mustahsin, Have you looked at the SPI communication on an oscilloscope? I highly recommend doing so when starting out because it may help you see what is happening on the SPI bus that you otherwise...
View ArticleForum Post: RE: AFE58JD28: fs/2 spur
Hi James, How are you? Looks like the spur might be shown due to the input clock. We will contact you for more detail about your questions very soon. Thank you again! Best regards, Chen
View ArticleForum Post: RE: ADS1256: Power Drain during channel switching
Hi Muruga, If you would share your schematic with me it would be very helpful. You can either send me a private message on E2E with an attachment or email it to pa_deltasigma_apps@ti.com. My initial...
View ArticleForum Post: ADS124S06: ADS124S06 Unused REFN0
Part Number: ADS124S06 Dear Sir, A customer would like to tie AVSS-SW to ground and switch REFN0 for external application to connect ground or float. I read section 10.1.5 on page 89 in d/s as follows;...
View ArticleForum Post: RE: ADS124S08: Voltage measurement using ADC
Hi Harshita, What it sounds like you are wanting to do is to take 3 single-ended measurements. Each output voltage can be connected to one of the analog inputs. One to AIN0, the second to AIN2 and the...
View ArticleForum Post: RE: ADS7950: differences between ADS7950S vs ADS7950SB
Hi Lenio, Look for the differences in the 'System Performance' and 'Dynamic Characteristics' entries in the ADS7950 datasheet, pages 12 and 13.
View ArticleForum Post: RE: ADS124S06: ADS124S06 Unused REFN0
Hi Masa-san, There may be some confusion with respect to how the AVSS switch (AVSS-SW) works. It is only useful if REFN0 is connected. Note the functional block diagram. The AVSS-SW will only break the...
View ArticleForum Post: RE: DAC7821: Output is not coming for the input 2.5V,5V and 10V
Hi Uttam, Thank you for your response. I think the problem is with the multiplication factor. If you take 409.5 as the multiplication factor, the integer part of the result (2.5*409.5) comes to 1023...
View ArticleForum Post: RE: ADS114S08: Data output from ADS goes to zero intermittently
Dear Bob, You are right about the power supply noise. Our SMPS was very noisy we replace it and all problems were resolved. Also the STATUS register which we were getting spurious values also stopped....
View ArticleForum Post: RE: ADS54J66: SPI, 24b vs 32b, page selection and EVM config files.
Hi Jim, Thanks, I'm investigating this further. I've supplied the ADC clock, and wrote the proper digital reset bit, and I can now read and write to any register. I triggered sysref over spi via the...
View ArticleForum Post: RE: ADS1198: ADA1198 sampling rate variation and signal...
Hi Alex we tried changing sampling frequency to 500Hz and then reading the samples at 250Hz. it definitely improves the frequency response. now the -3dB frequency shifts from originally 65Hz to 130Hz...
View ArticleForum Post: RE: ADS124S06: ADS124S06 Unused REFN0
Hi Bob, It sounds this internal switch can not used for just as a stand-alone analog switch for outside application like below. Correct? Best regards, Masa
View ArticleForum Post: RE: ADS7253: ADS7253 Write/Read issue
Hello Ryan, As per your suggestion we have added positive edge trigger D-flipflop at the output of SDO_A pin and SPI clock is configured for 1MHz, CPOL = 0 and CPHASE = 1. But with these settings we...
View ArticleForum Post: ADS124S06: ADS124S06 Protection diodes on 3-wire RTD typical...
Part Number: ADS124S06 Dear Sir, The d/s 10.2 typical application on page 91, describes as follows; "The additional pins are used to route the RTD excitation currents around the input filter resistors,...
View ArticleForum Post: ADS124S06: ADS124S06 RDATA command read from buffer
Part Number: ADS124S06 Dear Sir, I would like to confirm if the RDARA command read never-corruption data from a buffer even just when updating the buffer? I wonder and imagine if the ADC has two...
View ArticleForum Post: ADS124S06: ADS124S06 WREG command
Part Number: ADS124S06 Dear Sir, May I double check if configuration can be set by WREG command during standby mode (START = Low)? I think that ADS1248 can not at standby mode. Best regards, Masa
View ArticleForum Post: ADS1282EVM-PDK: Testing EVM without input amplifier
Part Number: ADS1282EVM-PDK Hi, I'm trying to bypass the input amplifier stage in the ADS1282EVM PDK, the differential inputs i'm directly connecting at the inputs of the ADC. However, i'm not able to...
View ArticleForum Post: DAC38J84: FIFO Errors
Part Number: DAC38J84 Hi Jim, I have four DAC38J84s clocked by an LMK04828 and an FPGA (the ZCU102) attempting to establish JESD204B link between all four of them. LMFS = 2441 Line Rate = 9.8304 Gbps...
View ArticleForum Post: ADS124S06: ADS124S06 Read Data Direct setting
Part Number: ADS124S06 Dear Sir, May I ask if the Read Data Direct mode does not need register setting? It will be automatically entered in if DIN is kept low after /DRDY became low? Best regards, Masa
View ArticleForum Post: RE: ADS124S06: ADS124S06 WREG command
Hi Masa-san, The ADS124S06 differs from the ADS1248 in this operation. Communication is possible with the START pin low with the ADS124S06 where the ADS1248 cannot write registers and is limited to a...
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