HELP

[mareoceano]

My Whites MXT Tracker is faulty.
Looking for the error, I found a short circuit in a small integrated
circuit with 8 pins marked A20 58Z2. I did not find anywhere what it
is under that label. Can someone help me find out what kind of
integrat circuit is ? Thanks in advance.

[Altra]

U5 is a ADS8320 analog to digital converter.

[Sun-Boy]

These chips are pretty tough, were you able to measure the short on the chip after you removed it from the circuit board?