AnsweredAssumed Answered

Troubles with AD8555

Question asked by SNikS on Jul 6, 2015
Latest reply on Jul 24, 2015 by SNikS

Hello!

 

I'm trying to use AD8555 chip with strain gauge transducer.

I connected AD8555 as shown at Figure 60 of datasheet (with 5V supply).

 

Without any connections to VPOS and VNEG pins I have high signals at VNEG pin (about 2,35 V) and at DIGIN pin (about 1 V).

At DIGOUT pin I have 4.97 V.

 

Is it correct behavior of the chip?

 

 

With high level at DIGIN pin I can not to program the chip.

Outcomes