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.
AMC0330R
- 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: Basic isolation
- AMC0330R: Reinforced isolation
- Safety-related certifications:
- DIN EN IEC 60747-17 (VDE 0884-17)
- UL1577
- Fully specified over the extended industrial temperature range: –40°C to +125°C
The AMC0x30R 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 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 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 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 7 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | AMC0x30R Precision, ±1V Input, Basic and Reinforced Isolated Amplifiers With Single-Ended, Ratiometric Output datasheet | PDF | HTML | 28 Jul 2025 |
| Application note | Pairing Isolated Amplifiers With SAR AD Converters | PDF | HTML | 24 Sep 2025 | |
| Application brief | Isolated Amplifiers and Modulator System Level Noise Comparison | PDF | HTML | 04 Sep 2025 | |
| Application note | System Benefits of Ratiometric Output Isolated Amplifiers | PDF | HTML | 04 Sep 2025 | |
| Application note | 適用於電壓感測應用的差動、單端固定增益和比率輸出隔離式放大器 | PDF | HTML | 05 Nov 2024 | |
| Application note | 전압 감지 애플리케이션을 위한 차동, 단일 종단 고정 게인 및 비율 측정 출력을 지원하는 절연 증폭기 | PDF | HTML | 05 Nov 2024 | |
| Application note | Isolated Amplifiers With Differential, Single-Ended Fixed Gain and Ratiometric Outputs for Voltage Sensing App | PDF | HTML | 28 Oct 2024 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
DIYAMC-0-EVM — Universal do-it-yourself (DIY) isolated amplifier and modulator evaluation module
The DIYAMC-0-EVM is a break-apart evaluation module (EVM) with twenty configurations in a five-by-four grid layout. For isolated-amplifiers, the three output options include differential output, single-ended output with fixed gain and single-ended output with ratiometric gain. For isolated (...)
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 (...)
Reference designs
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (DWV) | 8 | Ultra Librarian |
Ordering & quality
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