Part Number: ADS4249 Tool/software: Dear TI Engineer
The datasheet of the ads4249 shows that the vcm pin of the ads4249 outputs 0.95v common mode voltage,but in our circuit the voltage we measured on the VCM is 0.972V,and I want to kown the output…
Part Number: ADS4249 Tool/software: We use ADS4249 to sample an 80M sinewave signal。The digital output of ADS4249 is connected to FPGA through LVDS interface.we use FPGA demodule the 80M signal.In theory,the demodulation result is a straight line.but…
Part Number: ADS4249 Hi
i have Zynq board in which PL bank interface (1.8V) with ADS4249
also using PL SPI with 1.8V but still SPI is Not working with ADS4249
when we write 0th reg with 01 i can see following
but when again i try to read same reg i am…
Hi Massimo,
Correct, the offset should match the ADC input common mode VCM or the adc will overrange and clip. Can you share images or csv data of the channels? Please share both channels with the inputs off and also share both channels with the channel…
Part Number: ADS4249 Hello,
My customer is testing reading and writing the ADS4249 registers on a board they designed.
Other registers are read normally with the set values.
Below, 0x4A and 0x58 both wrote 0x01, but board 1 was read as 0x41/0x01 and board…
Part Number: ADS4249EVM Dear TI-
I am working with the ADS4249EVM and TWS1400. Both of these are in the stock/out-of-the-box configuration. I am observing larger than expected spurious in the FFT. Additionally, the codes view appears to have a pronounced…
Part Number: ADS4249 Hello,
My customer is testing a board they designed using the ADS4249.
They say that the reference clock of 245.76MHz is observed at the RF IN port of ADS4249.
In what cases can symptom like this occur?
Is there a way to reduce the…
Part Number: ADS4249 Hi Team,
A customer is using the ADS4249 IBIS Model and if they check zero transmission line using FPGA as load, signal starting (rising for 700mV), if we connected using transmission path and connected to Load signal rising for…
Part Number: ADS4249 Hi Experts, Good day. Our customer is using the ADS4249 for one of our applications and wants to use it in LVCMOS mode at a 180 MSPS sampling rate. They need clarity about the following.
1.In IBIS, for cmos_data_high1, currents are given…
Hi,
We use the LMH6554 to drive the ADC as Figure 1,the ADC is ADS4249. The LMH6554 converts the 10 MHz（1V VPP) single-ended signal into a differential signal and outputs it to the ADS4249.The sampling frequency of the ADS4249 is 250 MHz.When we used…
