Part Number: ADS5547 Other Parts Discussed in Thread: DAC5675A-SP , ADC14155QML-SP Hello!
I am looking for spacegrade ADCs and DACs to use in LEO on a CubeSat. Working in the VHF frequency range. I am not sure if ADS5547 is spacegrade, but it has some…
JH,
The ADS4449 is a LVDS output device. You need to remove all series 22 Ohm resistors on the output data lines and the output clocks and replace them with a single 100 Ohm resistor that will be connected across every +/- pair 2746.Transformers.ppt…
ALB,
Is your EVM a Rev C board? If so I have attached the schematic. Please make sure all jumpers are set per the board photo I am sending. Take a scope probe (diff probe would be better) and monitor the ADC input across R21 and R26. You should see…
Jin,
The schematic looks good for the most part. Please do the following:
1. Install R364 to provide a path to GND.
2. Do not use R361, R362, and R363 wit the ADC_VCM output.
3. Make sure DRVDD and AVDD are 3.3V.
4. Do not need to route ADC_CLKOUTM_F…
Hello Jim,
Apologies for the late reply. I have been traveling and have now just starting to catch up to all the E2E questions.
The revision C of the schematic is attached. The major change on this revision is that we have replaced U15 from a 16-bit…
Yinon,
Yes, using a 1:N transformer will allow you to increase the signal swing without adding noise as this is a passive device. You will need to be careful when choosing a transformer as the linearity will vary from model to model. I have attached…
High-Speed, Analog-to-Digital Converter Basics.pdf Kuramochi,
Unfortunately all of your assumptions are incorrect. Sampling rate is independent of interleaved correction and input frequency. I would suggest looking through the following PDF to gain…
Aravind,
This bandwidth can be captured by the ADC, but when the input is above Fs/2, this is called aliasing or under sampling. More info regarding this can be found in section 3 of the attached document.
Regards,
Jim
0550.ADC Basics.pdf
Witlab,
Q1:
Nyquist zone CTRL enables additional interleaving correction for analog mismatch. Nyquist zone information tells the interleaving correction the proper analog input frequency range.
Q2:
The ADS54j60 includes several different internal…
