1 Features

• ±250-mV input voltage range optimized for current

measurement using shunt resistors

• Fixed gain: 8.2

• Low DC errors:

– AMC1300B:

• Offset error: ±0.2 mV (maximum)

• Offset drift: ±0.9 μV/°C (maximum)

• Gain error: ±0.3% (maximum)

• Gain drift: ±30 ppm/°C (maximum)

– AMC1300:

• Offset error: ±2 mV (maximum)

• Offset drift: ±4 μV/°C (maximum)

• Gain error: ±1% (maximum)

• Gain drift: ±50 ppm/°C (typical)

– Nonlinearity: 0.03% (maximum)

• 3.3-V operation on high-side (AMC1300B)

• High CMTI: 100 kV/μs (minimum) (AMC1300B)

• Low EMI, meets CISPR-11 and CISPR-25

standards

• System-level diagnostic features

• Safety-related certifications:

– 7071-VPK reinforced isolation per DIN VDE V

0884-11: 2017-01

– 5000-VRMS isolation for 1 minute per UL1577

2 Applications

• Shunt-resistor-based current sensing in:

– Motor drives

– Frequency inverters

– Uninterruptible power supplies

3 Description

The AMC1300 is a precision, isolated amplifier

with an output separated from the input circuitry

by an isolation barrier that is highly resistant to

magnetic interference. This barrier is certified to

provide reinforced galvanic isolation of up to 5 kVRMS

according to VDE V 0884-11 and UL1577. Used

in conjunction with isolated power supplies, this

isolated amplifier separates parts of the system that

operate on different common-mode voltage levels and

protects lower-voltage parts from damage.

The input of the AMC1300 is optimized for direct

connection to shunt resistors or other low voltagelevel

signal sources. The excellent performance of

the device supports accurate current control resulting

in system-level power savings and, especially in

motor control applications, lower torque ripple. The

integrated common-mode overvoltage and missing

high-side supply voltage detection features of

the AMC1300 simplify system-level design and

diagnostics.

The AMC1300 is offered with two performance

grade options: the AMC1300B is specified over the

extended industrial temperature range of –55°C to

+125°C, and the AMC1300 for operation at –40°C to

+125°C.