Automotive, ±50-mV input, precision current sensing reinforced isolated amplifier

The AMC1302-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 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 AMC1302-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.