Current sensor type: ACS758KCB-150B, with 100 μΩ internal conductor resistance

Operating voltage: 3.3-5.5V; 

linearity K: 13mV / A; 
detectable current (AC or DC) range Ia: -150 ~ 150A; 
output voltage formula: = OU1 OU2 = the VCC / 2 + Ia * K = the VCC / 2 + (0.013 V * Ia); 
wherein, OU2 is OU1 through the voltage follower output buffer, can tell the microcontroller a / D channel better impedance matching is very suitable for AD conversion. 
Working temperature: -40 ~ 125 [deg.] C