1 Features

• AEC-Q100 qualified for automotive applications:

– Temperature grade 1: –40°C to 125°C, TA

• Integrated, high-voltage resistive divider for direct

DC voltage sensing without external resistors

• Better than 1% accuracy over temperature and

lifetime without system-level calibration

• Differential output

• Supply voltage range:

– High-side (VDD1): 3.0V to 5.5V

– Low-side (VDD2): 3.0V to 5.5V

• Low DC errors:

– Offset error: ±1.5mV (maximum)

– Offset drift: ±20μV/°C (maximum)

– Attenuation error: ±0.25% (maximum)

– Attenuation drift: ±40ppm/°C (maximum)

– Nonlinearity: 0.05% (maximum)

• High CMTI: 50V/ns (minimum)

• Low EMI: Meets CISPR-11 and CISPR-25 limits

• Available input options:

– AMC0381D06-Q1: 600V, 10MΩ

– AMC0381D10-Q1: 1000V, 12.5MΩ

– AMC0381D16-Q1: 1600V, 33MΩ

• Safety-related certifications:

– 7000VPK reinforced isolation per DIN EN IEC

60747-17 (VDE 0884-17)

– 5000VRMS isolation for 1 minute per UL1577

2 Applications

• Traction inverters

• Onboard chargers

• DC/DC converters

• Battery junction box

3 Description

The AMC0381D-Q1 is a precision, galvanically

isolated amplifier with a high-voltage DC, high

impedance input, and fixed-gain, differential output.

The input is designed to connect directly to a highvoltage

signal source.

The isolation barrier separates parts of the system

that operate on different common-mode voltage

levels. The isolation barrier is highly resistant to

magnetic interference and is certified to provide

reinforced isolation of up to 5kVRMS (60s).

The AMC0381D-Q1 outputs a differential signal that

is proportional to the input voltage. The differential

output is insensitive to ground shifts and enables

routing the output signal over long distances.

The AMC0381D-Q1 is available in three linear input

voltage ranges: 600V, 1000V, and 1600V. With an

integrated precision resistive divider, the AMC0381DQ1

achieves better than 1% accuracy over the full

temperature range, including lifetime drift.

The AMC0381D-Q1 is available in a 15-pin, 0.65mm

pitch SSOP package and is fully specified over the

temperature range from –40°C to +125°C.