AMC1311 (Malaysia) Reinforced Isolated Op-amp Operational Amplifier High-Impedance 2V Input
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The AMC1311 from Texas Instruments are high-precision, reinforced isolated amplifiers designed for high-voltage isolated voltage sensing in motor drives, inverters, and power supplies. These amplifiers feature a high-impedance 2-V input, optimized for interfacing with resistive dividers or other high-impedance sources. The devices integrate a capacitive isolation barrier that provides galvanic isolation up to 7000 VPK per VDE 0884-17 and 5000 VRMS per UL1577.
Features:
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Input Voltage Range: ±2 V (High-impedance input)
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Fixed Gain: 1
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Isolation Voltage:
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7000 VPK reinforced isolation (DIN EN IEC 60747-17 / VDE 0884-17)
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5000 VRMS for 1 minute (UL1577 certified)
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Common-Mode Transient Immunity (CMTI):
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AMC1311B: ≥ 100 kV/μs
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High-Side Supply Monitoring: Integrated missing-supply detection
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Temperature Range:
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AMC1311: –40°C to +125°C
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AMC1311B: –55°C to +125°C
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Output Voltage Range: Compatible with 3.3V or 5V systems
DC Accuracy Performance:
AMC1311:
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Offset Error: ±9.9 mV (max)
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Offset Drift: ±20 µV/°C (typ)
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Gain Error: ±1% (max)
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Gain Drift: ±30 ppm/°C (typ)
Applications:
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Isolated voltage sensing in:
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Motor drives
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Frequency inverters
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Uninterruptible power supplies (UPS)
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High-voltage monitoring systems
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