1 Features

• Linear input voltage range: ±250mV

• Supply voltage range:

– High-side (VDD1): 3.0V to 5.5V

– Low-side (VDD2): 3.0V to 5.5V

• Fixed gain: 8.0V/V

• Differential analog output

• Low DC errors:

– Offset error: ±0.2mV (maximum)

– Offset drift: ±2μV/°C (maximum)

– Gain error: ±0.25% (maximum)

– Gain drift: ±35ppm/°C (maximum)

– Nonlinearity: 0.04% (maximum)

• High CMTI: 150V/ns (minimum)

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

standards

• Isolation ratings: Basic isolation

• Safety-related certifications:

– DIN EN IEC 60747-17 (VDE 0884-17)

– UL 1577

• Fully specified over the extended industrial

temperature range: –40°C to +125°C

2 Applications

• Industrial motor drives

• Frequency inverters

• Server power-supply units (PSU)

• Power factor correction (PFC)

3 Description

The AMC1200C is a precision, galvanically isolated

amplifier with a ±250mV, differential input and

differential output. The input is optimized for direct

connection to a shunt resistor or other low-impedance

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. This barrier is certified to

provide basic isolation up to 5kVRMS (60s).

The AMC1200C 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 AMC1200C comes in 8-pin, wide-body SOIC and

SOP packages. The device is fully specified over the

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