I designed the circuit based on CN0278 and replaced AD5422 LFCSP version with TSSOP version.
AT HART_OUT pin, I can observe 500mVp-p signal, but at RSET pin, the signal is attenuated a lot and
the signal only has 50mVp-p swing. Judging from the CN0278 circuit note, it should be around 150mVp-p.
What is the cause of this problem?