Texas Instruments AMC3302

Description

The AMC3302 is a precision, isolated amplifier optimized for shunt-based current measurements. The fully integrated, isolated DC/DC converter allows single-supply operation from the low-side of the device, which makes the device a unique solution for space-constrained applications. The reinforced capacitive isolation barrier is certified according to VDE V 0884-11 and UL1577 and supports a working voltage of up to 1.2 kV RMS.

Features

• 3.3-V or 5-V single supply with integrated DC/DCconverter
• ±50-mV input voltage range optimized for currentmeasurement using shunt resistors
• Fixed gain: 41
• Low DC errors:
• Offset voltage: ±50 μV (max)
• Offset drift: ±0.5 μV/°C (max)
• Gain error: ±0.2% (max)
• Gain error drift: ±35 ppm/°C (max)
• Nonlinearity: ±0.03% (max)
• High CMTI: 95 kV/μs (min)
• System-level diagnostic features
• Meets CISPR-11 and CISPR-25 EMI standards
• Safety-related certifications:
• 6000-VPK reinforced isolation per DIN VDE V0884-11
• 4250-VRMS isolation for 1 minute per UL1577
• Fully specified over the extended industrialtemperature range: –40°C to +125°C

Typical applications

• Photovoltaic inverters, Protection relays, Motor drives
• Power supplies

More information

• Datasheet
• IC product information