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.
AMC1302-Q1
Automotive, ±50-mV input, precision current sensing reinforced isolated amplifier
Data sheet
AMC1302-Q1
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to 125°C, TA
- Functional Safety-Capable
- ±50-mV input voltage range optimized for current measurements using shunt resistors
- Fixed gain: 41
- Low DC errors:
- Offset error: ±50 µV (max)
- Offset drift: ±0.8 µV/°C (max)
- Gain error: ±0.2% (max)
- Gain drift: ±35 ppm/°C (max)
- Nonlinearity: 0.03% (max)
- 3.3-V or 5-V operation on high-side and low-side
- Fail-safe output
- High CMTI: 100 kV/µs (min)
- Low EMI, meets CISPR-11 and CISPR-25 standards
- Safety-related certifications:
- 7000-VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
- 5000-VRMS isolation for 1 minute per UL1577
The AMC1302-Q1 is a precision, isolated amplifier with an output separated from the input circuitry by an 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 supports a working voltage of up to 1.5 kVRMS.
The isolation barrier separates parts of the system that operate on different common-mode voltage levels and protects the low-voltage side from hazardous voltages and damage.
The input of the AMC1302-Q1 is optimized for direct connection to a low-impedance shunt resistor or other low-impedance voltage source with low signal levels. The excellent DC accuracy and low temperature drift supports accurate current control in PFC stages, DC/DC converters, traction inverters, and OBCs over the full automotive temperature range from –40°C to +125°C.
The integrated missing-shunt and missing high-side supply detection features simplify system-level design and diagnostics.
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Evaluation board
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Evaluation board
AMC1302EVM — AMC1302 evaluation module for ±50-mV-input, high-precision, reinforced isolated amplifier
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User guide: PDF
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
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (DWV) | 8 | Ultra Librarian |
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