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.
AMC1411-Q1
Automotive, 2-V input, precision voltage sensing reinforced isolated amplifier with high CMTI
Data sheet
AMC1411-Q1
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Functional Safety-Capable
- 2-V, high-impedance input voltage range optimized for isolated voltage measurements
- Fixed gain: 1.0 V/V
- Low DC errors:
- Offset error ±1.5 mV (max)
- Offset drift: ±10 µV/°C (max)
- Gain error: ±0.2% (max)
- Gain drift: ±30 ppm/°C (max)
- Nonlinearity 0.04% (max)
- 3.3-V or 5-V operation on high-side and low-side
- Missing high-side supply detection feature
- High CMTI: 100 kV/µs (min)
- ≥15.7-mm creepage, stretched SOIC package
- Reinforced isolation:
- 10600-VPK reinforced isolation per DIN VDE V 0884-11: 2017-01
- 7500-VRMS isolation for 1 minute per UL1577
The AMC1411-Q1 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 7.5 kVRMS according to VDE V 0884-11 and UL1577 and supports a working voltage of up to 1600 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 AMC1411-Q1 is optimized for connection to high-impedance resistive dividers or other high-impedance voltage signal source. The excellent DC accuracy and low temperature drift support accurate, isolated voltage sensing in onboard chargers (OBC), DC/DC converters, traction inverters, or other applications that must operate at high common-mode voltages, high altitudes, or in environments with high pollution degrees.
The AMC1411-Q1 is offered in a stretched 8-pin SOIC package and is AEC-Q100 qualified for automotive applications and supports the temperature range from –40°C to +125°C.
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Evaluation board
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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.
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Isolated amplifiers
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (DWL) | 8 | Ultra Librarian |
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