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AMC4311R

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2-V input reinforced isolated-power amplifier with ratiometric single-ended output

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Data sheet

AMC4311R

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Data sheet Order now

Product details

Device type Voltage sensing Output type Single-ended Peak-to-peak input voltage range (V) 2 Isolation rating Reinforced Withstand isolation voltage (VISO) (Vrms) 5000 Working isolation voltage (VIOWM) (Vrms) 1414 Transient isolation voltage (VIOTM) (VPK) 7000 CMTI (min) (kV/µs) 150 Input offset (±) (max) (V) 0.0015 Input offset drift (±) (typ) (µV/°C) 30 Rating Catalog Operating temperature range (°C) -40 to 125
Device type Voltage sensing Output type Single-ended Peak-to-peak input voltage range (V) 2 Isolation rating Reinforced Withstand isolation voltage (VISO) (Vrms) 5000 Working isolation voltage (VIOWM) (Vrms) 1414 Transient isolation voltage (VIOTM) (VPK) 7000 CMTI (min) (kV/µs) 150 Input offset (±) (max) (V) 0.0015 Input offset drift (±) (typ) (µV/°C) 30 Rating Catalog Operating temperature range (°C) -40 to 125
— (—) — See data sheet
  • Single-supply operation (3.3V or 5V) with integrated DC/DC converter
  • DC/DC external load current: 8mA (maximum)
  • High input impedance: 1.3GΩ (typical)
  • Linear input voltage range: 50mV to 2.0V
  • Single-ended output, ratiometric to VREFIN
    • Reference Input: 2.7V to 5.5V
  • Low DC errors:
    • Offset error: ±1.5mV (maximum)
    • Offset drift: ±30µV/°C (maximum)
    • Gain error: ±0.25% (maximum)
    • Gain drift: ±40ppm/°C (maximum)
    • Nonlinearity: ±0.08% (maximum)
  • High CMTI: 150V/ns (minimum)
  • Low EMI: Meets CISPR-11 and CISPR-25 standards
  • System-level diagnostic features
  • Isolation ratings:Reinforced isolation
  • Safety-related certifications:
    • DIN EN IEC 60747-17 (VDE 0884-17)
    • UL1577
  • Fully specified over the industrial temperature range: –40°C to +125°C
  • Single-supply operation (3.3V or 5V) with integrated DC/DC converter
  • DC/DC external load current: 8mA (maximum)
  • High input impedance: 1.3GΩ (typical)
  • Linear input voltage range: 50mV to 2.0V
  • Single-ended output, ratiometric to VREFIN
    • Reference Input: 2.7V to 5.5V
  • Low DC errors:
    • Offset error: ±1.5mV (maximum)
    • Offset drift: ±30µV/°C (maximum)
    • Gain error: ±0.25% (maximum)
    • Gain drift: ±40ppm/°C (maximum)
    • Nonlinearity: ±0.08% (maximum)
  • High CMTI: 150V/ns (minimum)
  • Low EMI: Meets CISPR-11 and CISPR-25 standards
  • System-level diagnostic features
  • Isolation ratings:Reinforced isolation
  • Safety-related certifications:
    • DIN EN IEC 60747-17 (VDE 0884-17)
    • UL1577
  • Fully specified over the industrial temperature range: –40°C to +125°C

The AMC4311R is a precision, galvanically isolated amplifier with a fully integrated, isolated DC/DC converter that allows single-supply operation from the low-side of the device. The DC/DC converter is capable of sourcing an external current of up to 8mA to power additional device (example: AMC0300D, AMC23C12) on the high side. The high-impedance input is optimized for connection to a high-impedance resistive divider or other voltage signal source with high output resistance.

The isolation barrier separates parts of the system that operate on different common-mode voltage levels. The isolation barrier is highly resistant to magnetic interference. This barrier is certified to provide reinforced isolation up to 5kVRMS.

The AMC4311R outputs a single-ended signal proportional to the input voltage. The full-scale output is set by the voltage applied to the REFIN pin. The output of the AMC4311R is designed to connect directly to the input of an ADC. Connect REFIN to the same reference voltage as the ADC to match the dynamic input voltage range of the ADC.

The AMC4311R device comes in 20-pin, wide-body SOIC package, and is fully specified over the temperature range from –40°C to +125°C.

The AMC4311R is a precision, galvanically isolated amplifier with a fully integrated, isolated DC/DC converter that allows single-supply operation from the low-side of the device. The DC/DC converter is capable of sourcing an external current of up to 8mA to power additional device (example: AMC0300D, AMC23C12) on the high side. The high-impedance input is optimized for connection to a high-impedance resistive divider or other voltage signal source with high output resistance.

The isolation barrier separates parts of the system that operate on different common-mode voltage levels. The isolation barrier is highly resistant to magnetic interference. This barrier is certified to provide reinforced isolation up to 5kVRMS.

The AMC4311R outputs a single-ended signal proportional to the input voltage. The full-scale output is set by the voltage applied to the REFIN pin. The output of the AMC4311R is designed to connect directly to the input of an ADC. Connect REFIN to the same reference voltage as the ADC to match the dynamic input voltage range of the ADC.

The AMC4311R device comes in 20-pin, wide-body SOIC package, and is fully specified over the temperature range from –40°C to +125°C.
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* Data sheet AMC4311R Precision, 2V Input, Reinforced Isolated Amplifier with Single-Ended, Ratiometric output and Integrated DC/DC datasheet PDF | HTML 26 May 2026

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