AMC3301-Q1

• AEC-Q100 qualified for automotive applications:
  • Temperature grade 1: –40°C to 125°C, T_A
• 3.3-V or 5-V single supply with integrated DC/DC converter
• ±250-mV linear input voltage range optimized for current measurement using shunt resistors
• Fixed gain: 8.2
• Low DC errors:
  • Input offset voltage: ±0.15 mV (max)
  • Input offset drift: ±1 µV/°C (max)
  • Gain error: ±0.2% (max)
  • Gain error drift: ±40 ppm/°C (max)
  • Nonlinearity: ±0.04% (max)
• High CMTI: 85 kV/µs (min)
• System-level diagnostic features
• Safety-related certifications:
  • 6000-V_PK reinforced isolation per DIN VDE V 0884-11
  • 4250-V_RMS isolation for 1 minute per UL1577
• Meets CISPR-11 and CISPR-25 EMI standards

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The AMC3301-Q1 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 VDE V 0884-11 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 AMC3301-Q1 is optimized for direct connection to shunt resistors or other low voltage-level signal sources. The integrated isolated DC/DC converter allows flexible placement of the shunt and the AMC3301-Q1, and makes the device a unique solution for space-constrained applications.

The excellent performance of the device supports accurate current monitoring and control, which is an important feature to achieve low torque ripple in motor control applications. The integrated DC/DC converter fault-detection and diagnostic output pin of the AMC3301-Q1 simplify system-level design and diagnostics.

The AMC3301-Q1 is specified over the industrial temperature range of –40°C to +125°C.