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.
AMC0230R-Q1
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Linear input voltage range: ±1V
- High input impedance: 2.4GΩ (typical)
- Supply voltage range:
- High-side (VDD1): 3.0V to 5.5V
- Low-side (VDD2): 3.0V to 5.5V
- Single-ended output, ratiometric to VREFIN
- Reference Input: 2.7V to 5.5V
- Low DC errors:
- Offset error: ±1.5mV (maximum)
- Offset drift: ±20µV/°C (maximum)
- Gain error: ±0.25% (maximum)
- Gain drift: ±40ppm/°C (maximum)
- Nonlinearity: ±0.025% (maximum)
- High CMTI: 150V/ns (minimum)
- Low EMI: Meets CISPR-11 and CISPR-25 standards
- Isolation ratings:
- AMC0230R-Q1: Basic isolation
- AMC0330R-Q1: Reinforced isolation
- Safety-related certifications:
- DIN EN IEC 60747-17 (VDE 0884-17)
- UL1577
The AMC0x30R-Q1 is a precision, galvanically isolated amplifier with a ±1V, high-impedance input and single-ended ratiometric output. The high-impedance input is optimized for connection to a high-impedance resistive divider or other voltage signal source with high output resistance.
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 AMC0x30R-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 AMC0x30R-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 AMC0x30R-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 | Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | AMC0x30R-Q1 Automotive, Precision, ±1V Input, Basic and Reinforced Isolated Amplifiers with Single-Ended, Ratiometric Output datasheet (Rev. A) | PDF | HTML | 28 Jul 2025 |
| Application note | Pairing Isolated Amplifiers With SAR AD Converters | PDF | HTML | 24 Sep 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
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 (D) | 8 | Ultra Librarian |
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