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.
Data sheet
AMC1311
- 2-V, high-impedance input voltage range optimized for isolated voltage measurement
- Fixed gain: 1
- Low DC errors:
- AMC1311:
- Offset error: ±9.9 mV (maximum)
- Offset drift: ±20 µV/°C (typical)
- Gain error: ±1% (maximum)
- Gain drift: ±30 ppm/°C (typical)
- AMC1311B:
- Offset error: ±1.5 mV (maximum)
- Offset drift: ±10 µV/°C (maximum)
- Gain error: ±0.2% (maximum)
- Gain drift: ±40 ppm/°C (maximum)
- Nonlinearity: 0.04% (maximum)
- AMC1311:
- 3.3-V operation on high-side ( AMC1311B)
- High CMTI: 100 kV/µs (minimum) ( AMC1311B)
- Missing high-side supply indication
- Safety-related certifications:
- 7000-VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
- 5000-VRMS isolation for 1 minute per UL1577
- Fully specified over the extended industrial temperature range: –40°C to +125°C
The AMC1311 is a precision, isolated amplifier with an output separated from the input circuitry by a capacitive isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced galvanic isolation of up to 5 kVRMS according to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 and supports a working voltage of up to 1500 VRMS.
The isolation barrier separates parts of the system that operate on different common-mode voltage levels and protects the low-voltage side from voltages that can cause electrical damage or be harmful to an operator.
The high-impedance input of the AMC1311 is optimized for connection to high-impedance resistive dividers or any other high-impedance voltage signal source. The excellent DC accuracy and low temperature drift support accurate, isolated voltage sensing and control in closed-loop systems. The integrated missing high-side supply voltage detection feature simplifies system-level design and diagnostics.
The AMC1311 is offered with two performance grade options: the AMC1311B is specified over the extended industrial temperature range of –55°C to +125°C, and the AMC1311 is specified for operation at –40°C to +125°C.
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Technical documentation
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Evaluation board
AMC1311EVM — AMC1311 evaluation module
The AMC1311 device is a high-voltage isolation amplifier with a differential output separated from the input interface circuitry by a silicon dioxide (SiO2) isolation barrier. The isolation barrier provides galvanic isolation of up to 7000 VPEAK. When used in combination with TLV6001, the (...)
User guide: PDF
Simulation model
AMC1311 TINA-TI Reference Design (Rev. B)
SBAM366B.ZIP (325 KB) - TINA-TI Reference Design
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
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 (...)
Many TI reference designs include the AMC1311
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (DWV) | 8 | Ultra Librarian |
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