AMC1300DWVR

The AMC1300DWVR is a high-precision isolation amplifier optimized for current measurement using shunt resistors, featuring a ±250-mV input voltage range and a fixed gain of 8.2. It offers remarkable precision with low DC errors, including offset error, offset drift, and gain error. The AMC1300B operates at 3.3V on the high side, making it suitable for various applications. Its high Common-Mode Transient Immunity (CMTI) and low Electromagnetic Interference (EMI) ensure reliable performance in noisy environments. System-level diagnostic features enhance reliability and maintenance, and it carries important safety-related certifications, making it ideal for critical systems.

• Shunt-resistor-based current sensing in:

– Motor drives

– Frequency inverters

– Uninterruptible power supplies

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.

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