Hi Jacob,
Could you please advise this question?
The offset voltage of the PGA870 can be adjusted by adding a correction voltage to the non-signal input, just like the LMH6515. Is that correct?
I appreciate your great help and cooperation.
Best regards…
Part Number: PGA870 Tool/software: Dear Specialists,
My customer is considering PGA870 and has questions.
I would be grateful if you could advise.
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(1) I am considering using the DVGA PGA870 as a front-stage amplifier for an AD converter (ADC3223IRGZR…
Hello Arun,
Thank you for trying out the suggested values. The reason is due to these capacitors attenuating the signal at 20Hz input due to the suggested AC coupling cap values. However, with a pulse rise time of <10ns, the bandwidth you would need…
Hello Joshua,
Could you share a block diagram or schematic of how you have the PGA870EVM configured? I am curious how you are driving the PGA870. There could be an issue with input loss and reflections, resulting in your lower observed output power.
I…
Luis,
It will take us a little while to process all the info and also to make sure the PGA855 can drive the AD9653.We have a setup to do that.
We're also looking at other options such as the PGA870.
Thanks again, Dave
Part Number: PGA870 Other Parts Discussed in Thread: LMH6517 , PGA281 Hi,
I am current designing a data acquisition board for my research. I am planning on using the ADC AD7381 . However, I was having a hard time finding an appropriate PGA to go with…
Part Number: PGA870 Hi Ti Community
Is there a minimum frequency response for PGA870.
Can it be used in audio applications in the frequency range 100Hz to 3kHz.
If not are there any fully differential PGA or VGA that is suitable for audio applications…
Hello Hale,
Update on the second issue. We do not have a discrete solution to offer for switching frequencies. But, if customer is worried about just the potentiometer, then customer should keep MCU then follow this up with a VGA/PGA (variable/programmable…
Hello Sumeet,
For the second stage VGA/PGA, I would recommend either the LMH6518 or PGA870 which have a wide gain range that includes attenuation and a fully differential output to drive an ADC and reduce the common-mode error and distortion as you mentioned…
Part Number: PGA870 Other Parts Discussed in Thread: TINA-TI ,
Tool/software: TINA-TI or Spice Models
Hi, i have simulated PGA870 with ±2.5 split supply and rest of the connected capacitors are used by referring datasheet.
I want to excite the circuit…
