Automotive, ±250-mV input, precision current sensing reinforced isolated amplifier

The AMC1300B-Q1 is a precision,

isolated amplifier with an output separated from the input circuitry by an isolation

barrier that is highly resistant to magnetic interference. This barrier is certified

to provide reinforced galvanic isolation of up to 5 kVRMS according to

DIN EN IEC 60747-17 (VDE 0884-17) and UL1577, and supports a working voltage of up

to 1.5 kVRMS.

The isolation barrier separates parts

of the system that operate on different common-mode voltage levels and protects the

low-voltage side from hazardous voltages and damage.

The input of the AMC1300B-Q1 is

optimized for direct connection to a low-impedance shunt resistor or other

low-impedance voltage source with low signal levels. The excellent DC accuracy and

low temperature drift supports accurate current control in PFC stages, DC/DC

converters, traction inverters, and OBCs over the full automotive temperature range

from –40°C to +125°C.

The integrated missing-shunt and

missing high-side supply detection features simplify system-level design and

diagnostics.