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AMC1311

Texas Instruments
Part Number AMC1311
Manufacturer Texas Instruments
Description Reinforced Isolated Amplifiers
Published Jan 2, 2020
Detailed Description AMC1311 SBAS786C – DECEMBER 2017 – REVISED JUNE 2022 AMC1311x High-Impedance, 2-V Input, Reinforced Isolated Amplifiers ...
Datasheet PDF File AMC1311 PDF File

AMC1311
AMC1311


Overview
AMC1311 SBAS786C – DECEMBER 2017 – REVISED JUNE 2022 AMC1311x High-Impedance, 2-V Input, Reinforced Isolated Amplifiers 1 Features • 2-V, high-impedance input voltage range optimized for isolated voltage measurement • Fixed gain: 1 • Low DC errors: – AMC1311: • Offset error: ±9.
9 mV (maximum) • Offset drift: ±20 μV/°C (typical) • Gain error: ±1% (maximum) • Gain drift: ±30 ppm/°C (typical) – AMC1311B: • Offset error: ±1.
5 mV (maximum) • Offset drift: ±10 μV/°C (maximum) • Gain error: ±0.
2% (maximum) • Gain drift: ±40 ppm/°C (maximum) – Nonlinearity: 0.
04% (maximum) • 3.
3-V operation on high-side (AMC1311B) • High CMTI: 100 kV/μs (minimum) (AMC1311B) • Missing high-side supply indication • Safety-related certifications: – 7000-VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17) – 5000-VRMS isolation for 1 minute per UL1577 – Fully specified over the extended industrial temperature range: –40°C to +125°C 2 Applications • Isolated voltage sensing in: – Motor drives – Frequency inverters – Uninterruptible power supplies 3 Description The AMC1311 is a precision, isolated amplifier with an output separated from the input circuitry by a capacitive 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 DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 and supports a working voltage of up to 1500 VRMS.
The isolation barrier separates parts of the system that operate on different common-mode voltage levels and protects the low-voltage side from voltages that can cause electrical damage or be harmful to an operator.
The high-impedance input of the AMC1311 is optimized for connection to high-impedance resistive dividers or any other high-impedance voltage signal source.
The excellent DC accuracy and low temperature drift support accurate, isolated voltage sensing and control in closed-loop systems.
The integrated missing high-side supply voltage detection fea...


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