Texas Instruments AMC3330

Description

The AMC3330 is a precision, isolated amplifier with a fully integrated, isolated DC/DC converter that allows single-supply operation from the low-side of the device. The reinforced capacitive isolation barrier is certified according to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 and separates sections of the system that operate on different common-mode voltage levels and protects low-voltage domains from damage.The input of the AMC3330 is optimized for direct connection to high-impedance, voltage-signal sources such as a resistor-divider network to sense high-voltage signals. The integrated isolated DC/DC converter allows measurement of non-ground-referenced signals and makes the device a unique solution for noisy, space-constrained applications.The excellent performance of the device supports accurate voltage monitoring and control. The integrated DC/DC converter fault-detection and diagnostic output pin of the AMC3330 simplify system-level design and diagnostics.The AMC3330 is specified over the temperature range of –40°C to +125°C.

Features

• 3.3V or 5V single supply operation with integrated DC/DC converter
• ±1V input voltage range optimized for voltage measurements with high input impedance
• Fixed gain: 2.0
• Low DC errors:
• Gain error: ±0.2% (max)
• Gain drift: ±45ppm/°C (max)
• Offset error: ±0.3mV (max)
• Offset drift: ±4µV/°C (max)
• Nonlinearity: ±0.02% (max)
• High CMTI: 85kV/µs (min)
• System-level diagnostic features
• Safety-related certifications:
• 6000VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
• 4250VRMS isolation for 1 minute per UL1577
• Meets CISPR-11 and CISPR-25 EMI standards

Typical applications

• EV charging infrastructure, Battery energy storage systems
• Power delivery systems
• Photovoltaic inverters
• Motor drives

More information

• Datasheet
• IC product information