Forum Post: RE: ADS1299: Safety mechanisms built-in?
Hi Danny, Thank you for your post and welcome to our forum! The ADS1299 ABSOLUTELY can be used in medical applications. The catch is that medical device standards apply to the whole system, not just...
View ArticleForum Post: RE: ADS1298: Ideal method for determining 50/60Hz noise coupling.
Hi Stomp, As you saw in the application note ( Improving CMR Using the RLD ), component tolerance is one of the biggest factors that can worsen CMR performance. By replacing the common-mode caps with a...
View ArticleForum Post: ADS1292R: PGA not working properly with noisy AVDD
Part Number: ADS1292R Please help us out on this analog front end amplification issue. In attachment, the top waveform(channel 3) is the analog differential input signal, the middle waveform is the...
View ArticleForum Post: RE: ADS1292R: PGA not working properly with noisy AVDD
Hello, Thanks for your post and welcome to the forum! Since your AVDD is AC coupled, I cannot tell what the absolute magnitude is, but it is possible that the operating conditions set by the datasheet...
View ArticleForum Post: RE: ADS1292R: PGA not working properly with noisy AVDD
Hello Ke, Thank you for your post and welcome to our forum! It's very difficult to understand the problem from this scope capture alone. Can you elaborate on the system using the ADS1292R : what are...
View ArticleForum Post: RE: ADS1292R: PGA not working properly with noisy AVDD
Yes, we will definitely try to clean our AVDD as much as possible. We are just wondering what kind of situations (like AVDD out of range, offset out of range or latch-up) will cause the output goes to...
View ArticleForum Post: RE: ADS1257: Setup ADS1257 Concerns
Hi Khoi, I would use a single GPIO pin from the MCU to connect to all three SYNC pins, keeping the trace length(s) to each ADC about the same. This way you guarantee that all three ADS1257 's receive...
View ArticleForum Post: RE: ADS1292R: PGA not working properly with noisy AVDD
We did get valid data out of ADS1292R most of the time. This rail output only happens when our on-board charging circuit is on which generates lots of noise on AVDD.
View ArticleForum Post: RE: ADS1235EVM: Firmware recovery.
Hi Nikolay, Take a look at this related E2E Thread: e2e.ti.com/.../2684174 If you download LM Flash Programmer, you can re-flash the EVM from the BATCH script file located at: "C:\Users\...
View ArticleForum Post: RE: DAC8742H: How is Power Drawn from the Fieldbus
Cyrus, We are working on a reference design dedicated to Foundation Fieldbus, the main source of difficulty / delay with respect to when these devices released has been regarding the FF stack itself,...
View ArticleForum Post: RE: DAC161P997: Node number issue with HART application
Wu, Have they performed any second-order investigation concerning the loss of communication in multi-drop mode? It would seem that checking the HART FSK amplitude would be at the top of the list in...
View ArticleForum Post: RE: DAC161P997: DAC161P997 Breaks down without reason
Hello, I do not see anything with the schematic that would cause damage to DAC161S997 . It is pretty hard to say what could be happening given the information you provided. Are you planning on testing...
View ArticleForum Post: RE: Compiler/ADS1261EVM: ADS1261EVM eval board control utilizing...
Hi Freddy, Welcome to the TI E2E Forums! You are talking about writing your own code to run on the PC side (i.e. in place of the EVM GUI), correct? It's probably possible but not something we will be...
View ArticleForum Post: RE: ADS1230: ADS1230 Thermal resistance coefficient
Hi Keiven, We have initiated a request for the thermal model and should have data available early to middle of next week. Best regards, Bob B
View ArticleForum Post: RE: ADS8406: ADS8406 going into latchup
Hi Marten, The ADS8406 is fully specified for +VA=5V and +VBD=3V or 5V. The only concerns will be system related; the MCU or FPGA connected to the ADS8406 digital bus will need to also work from 5V if...
View ArticleForum Post: RE: ADS8406: ADS8406 going into latchup
Yes, thank you Keith. We would need to have logic level translation with our FPGA, but it sounds like that would give us more margin on +VA before the device goes into latchup. I appreciate your input....
View ArticleForum Post: RE: ADS1262: Noise issue
Hi Naoki, Yes, I saw your most recent message and provided another reply.
View ArticleForum Post: RE: ADS1118: DOUT high all the time
Thanks, Joseph. I will consider measuring the ADC's supply current. By the way, if we are not using AIN2 & AIN3, do we need to GND them or we can leave them floating?
View ArticleForum Post: RE: ADS8406: ADS8406 going into latchup
Hi Marten, I looked at your original post, and see that there is a 10uH inductor between AGND and BDGND. All of the ABS MAX specifications assume that AGND and BDGND are connected together using a low...
View ArticleForum Post: RE: ADS4245-EP: ADS4245-EP clkout is not proper
The clock source what we used is L0M0KM6010E32IA, 100MHz, LVPECL . The VCM is connected to output of AC coupled filter output to provide VCM raised inputs to ADC. Schematic is below. Kindly comment.
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