1 Features

• Integrated, high-voltage resistive divider for direct

AC voltage sensing without external resistors

• Linear input range and impedance: ±400V, 8.3MΩ

• 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: ±0.8mV (maximum)

– Offset drift: ±10μV/°C (maximum)

– Attenuation error: ±0.25% (maximum)

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

– Nonlinearity: 0.025% (maximum)

• High CMTI: 150V/ns (minimum)

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

• Safety-related certifications:

– 7000VPK reinforced isolation per DIN EN IEC

60747-17 (VDE 0884-17)

– 5000VRMS isolation for 1 minute per UL 1577

• Fully specified over the extended industrial

temperature range: –40°C to +125°C

2 Applications

• Server power-supply units (PSU)

• Energy storage systems (ESS)

• Solar inverters

• EV charging stations

3 Description

The AMC0380D is a precision, galvanically isolated

amplifier with a high-voltage AC, high impedance

input, and fixed-gain differential output. The input is

designed to connect directly to a high-voltage 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 up to 5kVRMS (60s).

The AMC0380D outputs a differential signal

proportional to the input voltage. The differential

output is insensitive to ground shifts and enables

routing the output signal over long distances.

The AMC0380D has a linear input voltage range of

±400V. With an integrated precision resistive divider,

the AMC0380D achieves better than 1% accuracy

over the full temperature range, including lifetime drift.

The AMC0380D is available in a 15-pin, 0.65mm pitch

SSOP package. The device is fully specified over the

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