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.
AMC0302R-Q1
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Linear input voltage range: ±50mV
- Supply voltage range:
- High-side (VDD1): 3.0V to 5.5V
- Low-side (VDD2): 3.0V to 5.5V
- Single-ended, ratiometric output
- Reference Input: 2.7V to 5.5V
- Low DC errors:
- Offset error: ±50µV (maximum)
- Offset drift: ±1µV/°C (maximum)
- Gain error: ±0.2% (maximum)
- Gain drift: ±45ppm/°C (maximum)
- Nonlinearity: 0.04% (maximum)
- High CMTI: 150V/ns (minimum)
- Low EMI: Meets CISPR-11 and CISPR-25 standards
- Isolation ratings:
- AMC0202R-Q1: Basic isolation
- AMC0302R-Q1: Reinforced Isolation
- Safety-related certifications:
- DIN EN IEC 60747-17 (VDE 0884-17)
- UL1577
The AMC0x02R-Q1 is a precision, galvanically isolated amplifier with a ±50mV, differential input and single-ended, ratiometric output. The input is optimized for direct connection to a shunt resistor or other low-impedance signal source.
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 (DWV package) and basic isolation up to 3kVRMS (D package) (60s).
The AMC0x02R-Q1 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 AMC0x02R-Q1 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 AMC0x02R-Q1 comes in 8-pin, wide- and narrow-body SOIC packages, and is fully specified over the temperature range from –40°C to +125°C.
Technical documentation
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View all 3 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | AMC0x02R-Q1 Automotive, Precision, ±50-mV Input, Basic and Reinforced Isolated Amplifiers With Single-Ended, Ratiometric Output datasheet | PDF | HTML | 09 Dec 2025 |
| Application note | Isolated Converters CISPR25 Radiated Emissions | PDF | HTML | 13 Oct 2025 | |
| Application note | System Benefits of Ratiometric Output Isolated Amplifiers | PDF | HTML | 04 Sep 2025 |
Design & development
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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 |
|---|---|---|
| SOIC (DWV) | 8 | Ultra Librarian |
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