Forum Post: RE: DAC39RF10: Signal output error with standalone
Hey KB, SYSREF is only required for certain use cases (SUBCLASS 1 operation as well as NCO synchronization if register NCO_SYNC_SRC is 1 or 2). Its difficult to know what could be going wrong just...
View ArticleForum Post: RE: ADC31JB68: Is the ADC31JB68EVM still available?
Hi Rob, Thanks again for the quick response. I'm aware of the AD tome, it is quite detailed and useful. Perhaps I'm making too much of this - is this simply connecting the ADC serial ports to the FPGA...
View ArticleForum Post: RE: ADC12DL2500: Unused signals and routing
Hi Nandini, No there is no negative impact of routing the SYSREF and TMSTP signals to external test points. No you don't need to length match the Over range signals they are single ended CMOS signals....
View ArticleForum Post: RE: ADS7865: Interfacing AMC1311 to ADS7865
Hello Christopher, Thank you for your question. In differential mode the offset seen with a different common mode level should be minimal if any. I will like to not though that having a 1.44V common...
View ArticleForum Post: RE: DDS39RF10: Data Path Latency Calculation
Hello, Here it is. e2e.ti.com/.../5621.DAC39RF10_5F00_latency_5F00_calculator4.xlsx Regards, Matt
View ArticleForum Post: RE: DAC5675A: Output Resistance: Measurement setup?
Hi Rob, we could reproduce the resistance values for a constant current of 1 uA and 10 uA with our Keithley 2612 SMU. As you were speaking of putting the DAC into or out of compliance: Our first...
View ArticleForum Post: RE: ADS1263EVM-PDK: ADS data is not proper
Hi Tushar Gajjar, Welcome to the E2E forum. When you set the data rate to 38400sps and the gain to 32 on the ADS1263, the noise from the ADC is around 24.435uVpp (3.276uVrms) , see the following noise...
View ArticleForum Post: ADC14155QML-SP: Analog Rail lost power
Part Number: ADC14155QML-SP Tool/software: Hi, If the VA and VD (3.3V) suddenly lost power (0V) while VDR (1.8V) is still on, would this cause any stress to this ADC or latency failure? We are...
View ArticleForum Post: RE: ADS1292R: Have I misunderstood the reset/power/clock pins?...
I've also tried manually performing a RESET pulse by pulling the PWDN/RESET pin to GND with a bit of wire but no luck. Also no luck increasing the wait time after RESET, decreasing the SPI clock rate,...
View ArticleForum Post: RE: DDS39RF10: Data Path Latency Calculation
Hi, The link is for DAC39RF10 and not DDS 39RF10, do they share the same latency calculator? Thank you
View ArticleForum Post: RE: ADS125H01: output conversion
Hello Dale, thanks for the reply. Below is sample plot for a SPI reading from today, showing 0x02454E which is comparing to the incorrect results from last week. I am checking the CRC, and the 0x0A in...
View ArticleForum Post: TPS548B28: Answer for CPR241109360
Part Number: TPS548B28 Tool/software: CASE SIGNALS PIN FA-0712388 GND to P12V_STBY 10 TO GND The Signal affected GND to P12V_STBY (Attached image), product affected UCSX-210C-M7= Signal Measure UTT:...
View ArticleForum Post: RE: ADS112C04: Understanding the result of internal temperature...
Hi Daniel, Temperature data are represented as a 14-bit effective result that is left-justified within the 16-bit conversion result. When reading the two data bytes, the first 14 bits (MSBs) are used...
View ArticleForum Post: RE: ADS1262: ENOB and resolution
Hello Praveenlal, ENOB (technically, these noise figures are effective resolution) are more useful when measuring AC signals, since the input is not fixed over time. For DC measurement applications,...
View ArticleForum Post: RE: ADS1220: Issue with Configuration and Inconsistent Raw Data...
Hi Antesh, Your schematic looks okay for the configurations in your description. Can you provide captures of the SPI digital communication lines to verify your communication to the device is working...
View ArticleForum Post: ADS5271: Vcm output abnormal
Part Number: ADS5271 Tool/software: I made 20 boards using ADS5271. The Vcm outputs of 16 boards are around 1.45V, otherwise, the Vcm of the other 4 boards are between 0.36-0.6V. Among the 4 boards, 2...
View ArticleForum Post: RE: ADS5271: Vcm output abnormal
By the way, I set it as an internal reference with PD=0 and Next=1. In all cases, the RefT is around 1.94V, and the RefB is around 0.94V. This phenomenon happened to my other design two years ago, and...
View ArticleForum Post: RE: ADS5271: Vcm output abnormal
Hi, Sorry for the issue, can you please send over your schematics so I can make sure everything is properly connected? Also, please send over the spi writes that you are using to configure the...
View ArticleForum Post: RE: ADC14155QML-SP: Analog Rail lost power
Hi Yue, Was the lost of power to the 3.3V an open/disconnection or a short to ground or otherwise? Regards, Rob
View ArticleForum Post: RE: DAC5675A: Output Resistance: Measurement setup?
Hi Lukas, Let me check on this for you and get back to you. Please give me a few days to respond. Regards, Rob
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