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The AMC 1200 is a precision isolated amplifier whose output is separated from the input circuit by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. This barrier is certified according to UL 1577 and IEC 60747-5-2 to provide galvanic isolation up to 4000 VPEAK. This unit is used with isolated power supplies to prevent noise currents on high common mode voltage lines from entering the local ground, interfering with or damaging sensitive circuits.

The inputs of the AMC 1200 are optimized for direct connection to shunt resistors or other low voltage level signal sources. The device's superior performance supports precise current control, resulting in system-level power savings, especially in motor control applications, reducing torque ripple. The common-mode voltage of the output signal is automatically adjusted to a 3-V or 5-V low-side supply.

The AMC 1200 is fully specified over the extended industrial temperature range of -40°C to +105°C and is available in an SMD-style Gullwing-8 package.

±250 mV input voltage range optimized for shunt resistors Very low nonlinearity: 0.075% max 5V Low offset error: 1.5mVmax Low noise: 3.1mVRMSTyp low high side supply current: 8mVmax 5V input bandwidth: 60 kHz min fixed gain : 8 (0.5% accuracy) High Precision Common Mode Rejection Ratio: 108 dB 3.3-v Operation on Low Side Proven Galvanic Isolation: UL 1577 and IEC 60747-5-2 Approved Isolation Voltage: 4000 VPEAK State immunity: Typical life of 10 kv/s at 10 kv/s minimum rated operating voltage (see application report SLLA 197)