Calculation tool
SBAR013 — Isolated Amplifier Voltage Sensing Excel Calculator
This calculator provides estimates of the errors associated with using isolation amplifier devices in a voltage sensing configuration.
AMC3311
2-V input, precision-voltage-sensing reinforced isolated amplifier with integrated DC/DC
Data sheet
AMC3311
- Single-supply operation (3.3 V or 5 V) with integrated DC/DC converter
- Input voltage range (2 V) optimized for voltage measurements with high input impedance
- Fixed gain: 1.0
- Low DC errors:
- Offset error: ±1 mV (max)
- Offset drift: ±10 µV/°C (max)
- Gain error: ±0.2% (max)
- Gain drift: ±40 ppm/°C (max)
- Nonlinearity: ±0.02% (max)
- High CMTI: 85 kV/µs (min)
- System-level diagnostic features
- Meets CISPR-11 and CISPR-25 EMI standards
- Safety-related certifications:
- 6000-V PK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
- 4250-V RMS isolation for 1 minute per UL1577
- Fully specified over the extended industrial temperature range: –40°C to +125°C
The AMC3311 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 highly resistant to magnetic interference, is certified according to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577, and supports a working voltage of up to 1200 V RMS.
The isolation barrier separates parts of the system that operate on different common-mode voltage levels and protects the low-voltage side from voltage levels that can cause electrical damage and are potentially harmful to an operator.
The input of the AMC3311 is optimized for direct connection to high-impedance resistive dividers that are typically used for sensing high voltages. 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 high DC accuracy and low temperature drift support accurate voltage monitoring and control.
The AMC3311 is offered in a wide-body, 16-pin SOIC package, and is specified over the temperature range of –40°C to +125°C.
Technical documentation
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View all 6 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | AMC3311 Precision, 2-V Input, Reinforced Isolated Amplifier With Integrated DC/DC Converter datasheet (Rev. A) | PDF | HTML | 10 Aug 2023 |
| Application note | Pairing Isolated Amplifiers With SAR AD Converters | PDF | HTML | 24 Sep 2025 | |
| Certificate | CQC Certificate for AMC33xx | 26 Feb 2025 | ||
| Application brief | Verwendung von AMC3311 zur Stromversorgung des AMC23C11 für isolierte Sensorik und Fehlererkennung | PDF | HTML | 21 Aug 2024 | |
| Application brief | AMC3311을 활용하여 절연 감지 및 고장 감지를 위해 AMC23C11 에 전원 공급 | PDF | HTML | 31 May 2024 | |
| Application brief | Utilizing AMC3311 to Power AMC23C11 for Isolated Sensing and Fault Detection | PDF | HTML | 09 Nov 2023 |
Design & development
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Evaluation board
AMC3330EVM — AMC3330 precision reinforced isolated amplifier with integrated DC/DC converter evaluation module
The AMC3330 evaluation module (EVM) is an evaluation platform for the AMC3330 product, a precision isolated amplifier with an integrated DC/DC converter that powers the high side of the amplifier. AMC3330 is a 7-kV reinforced isolated amplifier designed for use in bipolar voltage-measuring (...)
Calculation tool
SBAR020 — Isolated Amplifier Current Sensing Excel Calculator
This calculator provides estimates of the errors associated with using isolation amplifier devices in a current sensing configuration.
Supported products & hardware
Products
Isolated amplifiers
Isolated ADCs
Precision ADCs
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SO-MOD (DWE) | 16 | Ultra Librarian |
Ordering & quality
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