In summary, the LEM HO is an ASIC based current transducer, featuring the new HG2 ASIC. This ASIC contains all the electronics in the transducer, including the Hall cell. The HO is a galvanically isolated device capable of measuring AC or DC current. A unique feature is the over current detection (OCD) pin. The HO is available in two mounting styles, through-hole or surface mount, with operating voltages of 3.3V and 5V and current capacities of 8, 15, and 25A. The HO 25 series has an operating temperature range of -40°C to 105°C.