Dear TI team,
We need your help on the followings.
In our design, we have four ADS1255 chips on a board. The board space is very limited and all the 4 chips are using 2.5v reference. We are wondering is it possible to driving the 4 reference input pin with a single driving circuits as suggested in the datasheet(figure26)?
We are thinking of using a small piece of the power plane of the PCB(4 layer with internal power plane) to route the reference net. Each reference input pin has its own filtering as shown on datasheet figure 25. The four ads1255 may sampling at same time. Will this work?
And if this method will not work, do you have any recommendation of small voltage reference part(like sot23-3 package) capable of direct driving ADS1255? Thanks!
Yiyang Zou
