Precision 1500V-input reinforced isolated amplifier with ratiometric output

The AMC0381R is a

precision, galvanically isolated amplifier with a high-voltage DC, high impedance input, and

single-ended ratiometric 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 AMC0381R outputs a single-ended signal proportional to the input

voltage. The full-scale output is set by the voltage applied to the REFIN pin. The

output of the AMC0381R is designed to connect

directly to the input of an ADC. Connect REFIN to the same reference voltage as the

ADC to match the dynamic input voltage range of the ADC.

The

AMC0381R is available in three linear input voltage ranges:

600V, 1000V, and 1600V. With an integrated precision resistive divider, the AMC0381R achieves better than 1% accuracy over the full temperature

range, including lifetime drift.

The AMC0381R 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.