Overview
The AMC1311BDWVR from Texas Instruments is a high-impedance, 2-V input, precision voltage sensing reinforced isolated amplifier. This device is designed for accurate, isolated voltage measurement and control in various industrial and high-voltage applications. It features a capacitive isolation barrier that provides reinforced galvanic isolation of up to 5 kV RMS, adhering to standards such as DIN EN IEC 60747-17 (VDE 0884-17) and UL1577. The AMC1311BDWVR is available in two performance grade options: the AMC1311 and the AMC1311B, each specified over different industrial temperature ranges.
Key Specifications
| Parameter | AMC1311 | AMC1311B |
|---|---|---|
| Input Voltage Range | –0.1 V to 2 V | –0.1 V to 2 V |
| Fixed Gain | 1 | 1 |
| Offset Error | ±9.9 mV (maximum) | ±1.5 mV (maximum) |
| Offset Drift | ±20 µV/°C (typical) | ±10 µV/°C (maximum) |
| Gain Error | ±1% (maximum) | ±0.2% (maximum) |
| Gain Drift | ±30 ppm/°C (typical) | ±40 ppm/°C (maximum) |
| Nonlinearity | 0.04% (maximum) | 0.04% (maximum) |
| Isolation Voltage | Up to 5 kV RMS | Up to 5 kV RMS |
| Operating Temperature Range | –40°C to +125°C | –55°C to +125°C |
| Output Bandwidth | 100 kHz to 220 kHz | 220 kHz to 275 kHz |
Key Features
- High-Impedance Input: Optimized for connection to high-impedance resistive dividers or other high-impedance voltage signal sources.
- Low DC Errors: Excellent DC accuracy and low temperature drift for accurate voltage sensing and control.
- Reinforced Galvanic Isolation: Provides up to 5 kV RMS isolation, certified to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 standards.
- Integrated Diagnostics: Features missing high-side supply voltage detection for simplified system-level design and diagnostics.
- High Common-Mode Transient Immunity: Protects against high common-mode transient voltages, ensuring reliable operation in harsh environments.
Applications
- Industrial Automation: Suitable for voltage measurement and control in industrial automation systems.
- Power Systems: Used in power monitoring and control applications, including grid monitoring and renewable energy systems.
- Medical Devices: Can be applied in medical devices requiring isolated voltage sensing to ensure patient safety.
- Aerospace and Defense: Applicable in aerospace and defense systems where high reliability and isolation are critical.
Q & A
- What is the input voltage range of the AMC1311BDWVR?
The input voltage range is –0.1 V to 2 V.
- What is the fixed gain of the AMC1311BDWVR?
The fixed gain is 1.
- What are the offset error and drift specifications for the AMC1311B?
The offset error is ±1.5 mV (maximum), and the offset drift is ±10 µV/°C (maximum).
- What is the isolation voltage rating of the AMC1311BDWVR?
The isolation voltage rating is up to 5 kV RMS.
- What are the operating temperature ranges for the AMC1311 and AMC1311B?
The AMC1311 operates from –40°C to +125°C, and the AMC1311B operates from –55°C to +125°C.
- What is the output bandwidth of the AMC1311B?
The output bandwidth is 220 kHz to 275 kHz.
- Does the AMC1311BDWVR have integrated diagnostic features?
Yes, it features missing high-side supply voltage detection for simplified system-level design and diagnostics.
- What are some typical applications of the AMC1311BDWVR?
Typical applications include industrial automation, power systems, medical devices, and aerospace and defense systems.
- What standards does the AMC1311BDWVR comply with for galvanic isolation?
The device complies with DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 standards.
- How does the high-impedance input of the AMC1311BDWVR benefit system design?
The high-impedance input is optimized for connection to high-impedance resistive dividers or other high-impedance voltage signal sources, supporting accurate voltage sensing and control.
