Forum Post: RE: AFE7225: AFE7225 with xilinx 7000 series FPGA
Anush, We do not have any verilog/VHDL code for AFE7225 . We use Altera Stratix IV FPGA to interface to this device. Follow the following site to find more information on how we interface our board to...
View ArticleForum Post: RE: ADS7845: LSB of SPI clocked data is always either 0x78 or 0xF8
Here's some updated info. It seems better, but there are some oddities: 1) The MS bit is always '1'. Is this expected? 2) The LSB has started to show the 'F8' and '78' phenomenon again. 2) As I move...
View ArticleForum Post: RE: CCS/ADS131E08: Sample code requirement
Siva, I'm checking in to the example code right now. In the last few months, we've redone the way that example code is distributed to follow export guidelines, so I can't just send the code via email....
View ArticleForum Post: RE: ADC32RF45: About voltage of ADC32RF45 signal
Hi ldx, Voltage level of SPI signals, RESET and PDN is 1.9V as mentioned in the datasheet. However as minimum high level input voltage is 0.8V, DVDD (1.15V ) can be used as well. DVDD is used in the...
View ArticleForum Post: RE: ADS131A04EVM: ADS131A04EVM
Kost, Looking at the buffer using R89, it looks like this should just be removed. It's possible that it was intended for some gain in the buffer with R87, but in the end, this should just be a unity...
View ArticleForum Post: RE: ADS7223: CID in full clock mode
Hi Lutz, Thank you for your post. Can you check whether the customer is using pseudo- or fully-differential inputs (PDE = 0 or 1)? Also, how is the customer selecting the channel - manually or...
View ArticleForum Post: RE: ADS5474: FSR Clarification
Hi Mitchell, According to the Figure 42, on the page 23 of the datasheet. When you apply 2.5V as an external ref the Vcm pin's output should be around 3.13V. To get the exact Vcm for your device I...
View ArticleForum Post: RE: CCS/ADS131E08: Sample code requirement
Siva, I've noticed that the firmware for the ADS130E08EVM is packaged up with the EVM software. This firmware can be used as example code, and the ADS131E08 is functionally the same. I believe there's...
View ArticleForum Post: RE: ADS8168: No SDO response from ADS8168
Hi Markus, I appreciate you posting the outcome of this debug. The detailed information in your question was helpful in narrowing down the possibilities.
View ArticleForum Post: RE: ADC161S626: The amount of characteristic change due to aging
Hello, We do not have long term drift data. However, max drift over 10years at 25C will be approximately equal to the max specification. As an example, Positive Full-Scale Error for the ADC161S626 is...
View ArticleForum Post: RE: DAC80508: Request for Support to Analog Input & Output...
Hi Lakshmanan, For the Analog inputs I have a couple of device recommendations and resources you can reference: ADS125H02 - This device can measure +/- 20V without any external signal conditioning. I...
View ArticleForum Post: RE: ADS8638: data invalid for first couple of reads, then OK
Hi Nick, I want to understand your code well before addressing the issue, I guess that the "ADC ADDRESS = 1000 hex" is the command (1000 hex) you sent to ADC on SDI, actually this is the command to...
View ArticleForum Post: RE: DAC38J84: 4 independent outputs
Hi Kang, my AA is considering the following JESD MODE: L=8, M=4, F=1, S=1, HD=1 without interpolation (since NCO =0). The TSW14J56 will be used as a waveform generator. The requirement is generating...
View ArticleForum Post: RE: ADS8638: data invalid for first couple of reads, then OK
Hi Dale, Thank you for your reply. No, the command that I send to the ADC is this : AdcData1 = Ads8638TxRx(ADS8368_SELECT_CHANNEL_1); where "ADS8368_SELECT_CHANNEL_1" is #define to be 0x810 (i.e. a...
View ArticleForum Post: RE: ADS8638: channel sequencing in manual mode
Hi Nick, Your "ADS8368_SELECT_CHANNEL_1 0x8x0" is the right address and data to write Manual Mode Register(address=04h) to select channel(e.g. 0x810 for Channel 1), but you did not show the detail...
View ArticleForum Post: RE: ADS5474: FSR Clarification
Hi Neeraj, Thanks. I was under the assumption that FSR is directly proportional to the reference voltage, however, the plot and print in the datasheet express that it's actually inversely proportional....
View ArticleForum Post: RE: ADS8638: channel sequencing in manual mode
Hi Dale, Thank you for your reply. The Ads8638TxRx( ) function is very simple, it uses the stm32 HAL library SPI function to transmit a 16-bit word over the SPI interface (on MOSI), and at the same...
View ArticleForum Post: RE: ADS5294: ADS5294EVM
Hi Prateek, How are you? Here is the TSW1400EVM schematics which we are using for testing ADS5294EVM . Please take a look at its FPGA portion. You can see its interface with ADS5294 . Thank you! Have a...
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