1 Features
• AEC-Q100 qualified for automotive applications:
– Temperature grade 1: –40°C to +125°C, TA
• Functional Safety-Capable
– Documentation available to aid functional safety
system design
• ±250-mV input voltage range optimized for current
measurements using shunt resistors
• Fixed gain: 8.2 V/V
• Low DC errors:
– Offset error: ±0.2 mV (max)
– Offset drift: ±0.9 μV/°C (max)
– Gain error: ±0.3% (max)
– Gain drift: ±30 ppm/°C (max)
– Nonlinearity: 0.03% (max)
• 3.3-V or 5-V operation on high-side and low-side
• Missing high-side supply detection feature
• High CMTI: 100 kV/μs (min)
• Low EMI, meets CISPR-11 and CISPR-25
standards
• Safety-related certifications:
– 10600-VPK reinforced isolation per DIN EN IEC
60747-17 (VDE 0884-17)
– 7500-VRMS isolation for 1 minute per UL1577

2 Applications
• Shunt-resistor-based current sensing in:
– HEV/EV charging piles
– HEV/EV on-board chargers (OBC)
– HEV/EV DC/DC converters
– HEV/EV traction inverters

3 Description
The AMC1400-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 7.5 kVRMS
according to DIN EN IEC 60747-17 (VDE 0884-17)
and UL1577, and supports a working voltage of up to
2 kVRMS.
The isolation barrier separates parts of the system
that operate on different common-mode voltage levels
and protects the low-side from voltage levels that can
cause electrical damage and are potentially harmful to
an operator.
The input of the AMC1400-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 power factor
correction (PFC) stages, DC/DC converters, traction
inverters, and other applications that must operate
at high common-mode voltages, high altitudes, or in
environments with high pollution degrees.
The AMC1400-Q1 is offered in a stretched 8-pin SOIC
package and is AEC-Q100 qualified for automotive
applications and supports the temperature range from
–40°C to +125°C.