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.