Hi David Ridgway,
Have you tried shorting the ADC inputs to see if the noise still meets datasheet specifications? This will give a good indication if the ADC modulator, filter, etc., are still functioning properly
The next step would be to apply a known…
Joaquin,
There is an EVM available which you can get from TI.com to test yor circuit (link below)
https://www.ti.com/tool/DEM-OPA-RGV-EVM
In your schematic (snippet below) the input swings from 0V to 3.3V, so for the time period in which it is 0V, it…
Hello D,
1) I found in DS of OPA360 page6 ( Enable/Shutdown) section
"If the Enable pin is not connected, internal pull-up circuitry will enable the amplifier."
But it is probably better to tie it to 3.3V
- I agree, you may float it but I recommend…
Hi Parth,
A couple of questions about your patches:
1. CAN DEM ERROR:
Forgive my lack of knowledge on DTS, maybe your next reply will help me understand better but in your patch:
&mcu_mcan0 { status = "disabled"; - pinctrl-names = "default…
Hello,
Your switching frequency is coming in correct, however the early HO termination in FPWM should not be happening.
Right now your FPWM looks like DEM, which implies that the device may think current limit is being hit.
Also note the device starts…
Part Number: ADS52J65EVM Other Parts Discussed in Thread: ADS52J65 Dear Sir/Madam,
I am using TSW14J50 and ADS52J65EVM. The sine wave is driven on Input 9 via FDA to the ADC.
After loading the TSW14J50 FPGA with ADS52J65 firmware, the status LEDs are…
Part Number: INA851 Other Parts Discussed in Thread: ADS127L11 Hello,
In the INA851 datasheet Figure 9-9. Driving the Delta-Sigma ADC ADS127L1 the INA851 is used. For a wideband application is it possible to generate a 4-pole filter (2 active, 2 passive…
Other Parts Discussed in Thread: TLV320DAC3100 , PCM1774 , PCM1870A , PCM1870 , TLV320ADC3101 , TLV320ADC3001 hi, i need buy this evaluation boards, but i can not find them.
DEM-DAI1774 EVM
DEM-DAI1870 EVM
I've only found the user guide.
regards, patricio…
Hi Sunil,
I tested with the DEM-2912A EVM and as you can hear it's ok and not noisy.
Maybe check the connection on the audio jack and try playing with the volume.
I pressed the mute button and you see the signal is muted in the middle of the track…
Morning Folin,
If you read the discussion for the converter EVM using the THS4541 it says they see the same glitch as you do - I think this is because they did the filter wrong, normally you want the diff C right at the ADC inputs as the last element…