Part Number: ADS9110 Other Parts Discussed in Thread: OPA625 , OPA378 , THS4551 Hi, I am using 24 of ADS9110 ADCs on a board and would like to provide a common 4.5V reference to all (if not one for 12 devices). I'm planning follow the design based on…
Hi Markus
Composite buffer helps us to achieve true 18 bit performance out of ADC. For lower sampling speed you can think of having a single high bandwidth buffer at REF5045 output. DC performance may suffer and this can lead to some THD degradation…
Part Number: REF5050 Other Parts Discussed in Thread: ADS8881 , OPA333 , THS4131 Hi Team,
Here a summary of my findings on the REF5050:
I am using the ADS8881IDRC ADC in one of my projects.
To create the REF voltage I use the REF5050AIDR:…
Hi Karl,
One possible solution is to use a fully differential amplifier (FDA) to scale and shift the signal to the 0-5V unipolar range. Attached is a TINA simulation file showing the THS4551 (FDA) powered by the +5V supply with the appropriate gain…
Sjordi
This post should probably be in the Precision Amplifiers forum or the Amplifiers & Other Linear, but I'll take a stab at it anyway. The schematic should work ok, but I did have a couple of comments and concerns. First add a supply decoupling…
Other Parts Discussed in Thread: OPA333 , THS4281 Hi all,
I'm now testing the ADS8881EVM board due to the reference design and datasheet. And I have several questions as below:
1. As the input anti-aliasing filter design, make the Cfilter >20 Csample…
Hello Brian,
thank you for answering so quickly and sorry for still bothering you ;) We are researching this more; we notice that the prototypes that we made end of 2012 do not have the problem. The Vref buffer had no voltage drop when driving three…
Hello Pratik,
We do not have FPGA example code for the ADS8900B ADC. However, you can use a standard SPI-00-S interface to the device for initial development, and then change to quad-SDO if you need to lower the SCLK frequency. Details are in section…
Hi Luis,
I appreciate your response. Your proposal with the 3.3uF sounds good. I would appreciate if you could confirm this with your simulations. I tried to do a simulation in TINA-TI with the model of the ADS8860 and setting up the voltage reference…
Other Parts Discussed in Thread: ADS8860 , THS4281 , OPA333 Hello everyone,
I'm designing a three channel ADC conversion using the ADS8860 at a 1MSPS. I would like to use only one reference voltage for all three channels with the REF5045 and the proposed…
