hello,
I intend to use ads830 analog to digital converter in my design and I have a question regarding powering the device:
in my design, the VDRV supply pin is powered from a 3.3v power supply which is always on, and since there is no enable pin for the ADS830, I am considering to switch the VS power supply pin on, if i need to do measurements and off if measurements are not required. Can I do that without damaging or latching the device?
Please advise,
Yossy Goldenberg
Hello
I need IBIS models(to be used in ti-tina) of the data converters mentioned above.
What should i do?
Thanks.
The block diagram on the first page of the data sheet shows an output stage that has a tri-state capability but there is no control line for this unless it is tied to the clk and the timing circuitry.
Does the ADS830 have a tri-state output and what controls it? What is the timing from the control?
Hello everyone,
I am a chinese engineer, Recently, I want ADS830E to design a High speed Data acquire card.Now, I encountered a lot of problems about ADS830E. The output data of ADS830E board are all random datas. In fact, I acquired a lot of noise signals when i input a analog signal that was from a output pin of a MCU.I really don't know How to solve them. Who can help me?
Now,I, firstly, introduce my boards to you.
One is MCU board which may read I/O data of ADS830E output pins. The other is ADS830E data card.There is a only A/D IC on this board. The schematic of ADS830E data card is from ADS830E-EVK. However, There is a big difference between my ADS830E board and ADS830E-EVK. The difference is that my board has not AMP OPA681U for Input pin of ADS830E. My board work in single-ended mode.
I directly want to input an analog signals that is a Output signal from a pin of MCU to input pin of ADS830E board that is my board. In here, The Output signal voltage from a pin of MCU is range from 0.0V to 3.3V. Accroding to the datasheet of ADS830E, the signals inputed range from 1.5V to 3.5V in single-ended mode, But my signals provided for input pins of my ADS830E board work range from 0.0V to 3.3V. Does i need a AMP OPA681U for my ADS830E board? I must install a AMP OPA681U on it??
Who can help me? Thank you for your any help.
Sincerely,Yours
Bear19
Part Number: ADS5273
Tool/software:
Hello,
To calculate Single Event effects rate of ADS5273 and ADS830E, I need
SEE Cross Section(cm2/bit) or SEE Cross Section(cm2/device), Where can i find this information?
Thank you in advance.
Lior,
Take a look at the ADS830 and TLC5540. One of these may work for you.
Regards,
Jim
Hello Rahul,
There are many ADC solutions for that sampling frequency.
The lowest cost solution is the ADS830. The input range will need to be scaled. The data sheet can help with application information.
The ADC search can be found at: http://focus.ti.com/paramsearch/docs/parametricsearch.tsp?family=analog&familyId=390&uiTemplateId=NODE_STRY_PGE_T
Regards,
Ron M.
Couple of quick things Akash,
1. Where is your DC bias current path for the V+ inputs to the op amps?
2. This differential I/O op amp circuit sometimes has a common mode oscillation - probably not here, but we did see that in the OPA838 decomp device - I put a discussion of that in the data sheet,
3. You will need to provide some type of filtering between the op amp outputs and the ADC inputs or you will get the broadband noise of the op amps into the ADC, i usually use an RLC filter - low insertion loss design, you probably have something there, but would need that for full analysis
Your question (ADC spec degradation) is fundamental, and we spent a lot of time on that back in the early 2000's - here is slide deck reporting those results,
Normally, I would have used an FDA for this interface, depending on frequency range look at the THP210, THS4561, THS4551, THS4541. And normally, the balun needs a matching R on the secondary - I have done a great deal of work (and articles) on that topic if you need help there.
