Forum Post: RE: AFE5818: HPF or DC compensation distortion?
Hi, We don't have the TSW1400EVM . We have produced our own hardware that includes an AFE5818 . The test patterns look fine. The distortion problem is reproducible with signals in the ~30 kHz range, as...
View ArticleForum Post: RE: AFE5818: HPF or DC compensation distortion?
My posted images look broken to me. I'll try to repost them again here: Input ~10 mVpp: Input ~35 mVpp (some harmonic components are starting to show more clearly): Input ~100 mVpp (here there is a...
View ArticleForum Post: RE: CCS/ADS131E08: STATUS REGISTER SHOWS HIGH FOR FAULT_STATN...
Hi Joseph, I have reset the device. Then I issued a stop Command to stop any conversions and then I issued a SDATAC command. Then I directly read the config 1 register , It showed 0x00H but config 1...
View ArticleForum Post: RE: ADS1298: Question regarding referencing inputs of ADS1298
Thank you so much Alex and sorry for late response. Following your hint, I tried to look into the RLD, however there are still many things remains confussed.. Here is how I connect right now, where the...
View ArticleForum Post: RE: AFE5818: HPF or DC compensation distortion?
Just to make it clear again. This is in TGC mode and I and Q refers to channel 16 and 15 on the AFE. These are IF signals from an external mixer (not the AFE CW mixer). The FFT spectrum is the complex...
View ArticleForum Post: RE: AFE5818: HPF or DC compensation distortion?
And the distortions are only seen in sampled data, not in the IF signals at the inputs of the AFE. Is there are problem with our register programming or is there a problem with the AFE DC offset...
View ArticleForum Post: ADS1299: ADS1299 input stage
Part Number: ADS1299 Hi Folks, I'm working on an EEG !!! like !!! project, where I have to digitalize 2mVpp signals with high resolution as possible. The facts confused me: From the datasheet of...
View ArticleForum Post: RE: ADS42B49: How to design driver circuit using amplifier
Hi Jim, Thanks for your reply! I've checked the EVM design file of ADS42B49EVM . But it seems not the amplifier interface as the picture shows below. My regards, Luella
View ArticleForum Post: RE: ADS1255: Using one crystal / voltage reference for multiple...
Hello Chris, thanks for your fast response! I will try to use a single crystal and multiply voltage references. I have additional questions: Can i use a single power supply with pi filter to power all...
View ArticleForum Post: ADS8028EVM-PDK: ADS8028EVM and DAC81416EVM Interconnect
Part Number: ADS8028EVM-PDK Hi all, We have two EVBs: ADS8028EVM and DAC81416EVM . And we have one SPI master. The question is, can these boards share the MISO signal wire directly? As shown in the...
View ArticleForum Post: ADS8319: Vref greater than Va+0.1V
Part Number: ADS8319 To understand potential failure modes of the device what happens to the ADC readings when the Vref signal exceeds the Va supply by more than 0.1V as defined in the recommended...
View ArticleForum Post: RE: AFE5818: HPF or DC compensation distortion?
So I suggest for you to try and reproduce the problem with your TSW-setup please program (after LVDS setup and such): 0xc30008 0xc4c200 0xc50200 0xc60200 0xc9aaaa 0xcb0088 0xcd0000 and then inject a 30...
View ArticleForum Post: RE: Compiler/ADS54J60EVM: ADS54J60EVM
Hi, As the system does not say anything (no error or status message) I have a problem reporting anything else but the fact that the system stops sending captured data to the GUI. And this occurs 30-60...
View ArticleForum Post: RE: Compiler/ADS54J60EVM: ADS54J60EVM
Jan, Can you try repeating your test by use a smaller capture size, say around 1-2G samples? I will check with the software team to see if there could be an issue with continuous large captures....
View ArticleForum Post: RE: ADS42B49: How to design driver circuit using amplifier
Luella, This board has the option to either use a transformer or amplifier by just moving a few resistors (see below). Not sure what your question is and why your schematic view you sent does not show...
View ArticleForum Post: RE: ADS54J20: Multi ADC design with ADS54J20 and ADS5409
Mitchell, 1. What frequency should we run the SYSREF clock at, and does it need to be phase and/or frequency sync'ed with the CLKINx? If not using decimation mode, Max SYSREF rate = Sample clock /...
View ArticleForum Post: RE: ADS1298: 1 bit shifted received from AD1298 with MSP430F67651A
Hello Ryan, I am doing as you are suggesting and first 24 bit data is C00000 and next 8 24 bit datas are 800000, but as i told you when i read the buffer it shows me 600000 and 8 times 400000, which is...
View ArticleForum Post: AFE7225EVM: Software and Connectivity/Interfacing.
Part Number: AFE7225EVM Hi Data Conversion & Evaluation Board Team, Farnell case 01704433 CONCERNS: Farnell Sku 2378859 Texas Instruments AFE7225EVM - Evaluation Board, AFE7225 Dual 12-Bit 125MSPS...
View ArticleForum Post: ADS1258: Power-Up
Part Number: ADS1258 Hi all, I have a question about power-up of ADS1258 . In page 24, the datasheet of ADS1258 states that “The analog and digital supplies should be applied before any analog or...
View ArticleForum Post: RE: TSC2004: ESD damage
Hi Roberto, Based on the datasheet ratings we would not expect this behavior but it's clear that the TSC2004 in your image was severely electrically over-stressed. ESD can trigger the conduction of the...
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