Overview
The AMC1311DWVR is a precision, isolated amplifier manufactured by Texas Instruments. It features a capacitive isolation barrier that provides reinforced galvanic isolation of up to 5 kV RMS, according to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577. This isolation barrier separates parts of the system operating on different common-mode voltage levels, protecting the low-voltage side from potentially harmful voltages. The amplifier is optimized for high-impedance input connections, such as resistive dividers, and offers excellent DC accuracy and low temperature drift, making it suitable for accurate, isolated voltage sensing and control in closed-loop systems.
Key Specifications
| Specification | Value |
|---|---|
| Input Voltage Range | ±100mV to ±3V |
| Bandwidth | 80 kHz |
| Gain Accuracy | ±0.1% |
| Isolation Voltage | 5.7 kVrms |
| Operating Temperature Range | –40°C to +125°C |
| Package Type | 8-pin SOIC (DWV) |
| Offset Error (Maximum) | ±9.9 mV |
| Offset Drift (Typical) | ±20 µV/°C |
| Gain Error (Maximum) | ±1% |
| Gain Drift (Typical) | ±30 ppm/°C |
Key Features
- High Precision: Offers precise voltage and current measurement with high gain accuracy.
- Galvanic Isolation: Provides isolation up to 5.7 kVrms, ensuring safety in high-voltage environments.
- Low Power Consumption: Operates with low power consumption for efficiency.
- Small Package Size: Compact design in an 8-pin SOIC package, suitable for space-constrained applications.
- Wide Temperature Range: Supports operation in harsh environments with a temperature range of –40°C to +125°C.
- Integrated Missing High-Side Supply Voltage Detection: Simplifies system-level design and diagnostics.
Applications
- Industrial Automation: Used for precise voltage and current measurements, motor control, and power monitoring.
- Power Inverters: Utilized for monitoring and controlling power flow in inverters for renewable energy systems, electric vehicles, and UPS devices.
- Grid-Tied Solar Systems: Employed to monitor power generated by solar panels and manage grid interconnection.
- Battery Management Systems: Provides accurate current sensing and isolation for safe and efficient battery operations in electric vehicles, drones, and energy storage systems.
- Precision Instrumentation: Used for precise signal conditioning and isolation in test and measurement equipment.
Q & A
- What are the key features of the AMC1311DWVR?
The AMC1311DWVR offers high precision, galvanic isolation, low power consumption, small package size, and a wide temperature range, making it suitable for various voltage and current sensing applications.
- How does the AMC1311DWVR compare to other isolated amplifiers?
The AMC1311DWVR stands out for its accurate measurements, isolation capabilities, and low power consumption. While similar to other isolated amplifiers, its specific features make it ideal for applications requiring high precision and isolation.
- Can the AMC1311DWVR be used as a replacement for the AMC1301?
Yes, the AMC1311DWVR can be used as a replacement for the AMC1301 in applications where precise voltage and current sensing within the specified input range are needed. Designers may choose based on specific input voltage requirements and isolation levels.
- What are some common applications of the AMC1311DWVR in electronic systems?
The AMC1311DWVR is commonly used in industrial automation, power inverters, solar systems, battery management, and precision instrumentation applications. Its accuracy, isolation, and compact design make it suitable for a wide range of electronic systems.
- What considerations should be taken when using the AMC1311DWVR in voltage and current sensing circuits?
When using the AMC1311DWVR, ensure proper signal conditioning, noise immunity, and external component selection to achieve accurate measurements. Additionally, attention should be paid to isolation requirements for safety and performance.
- What is the isolation voltage rating of the AMC1311DWVR?
The AMC1311DWVR is certified to provide reinforced galvanic isolation of up to 5.7 kVrms.
- What is the operating temperature range of the AMC1311DWVR?
The operating temperature range of the AMC1311DWVR is –40°C to +125°C.
- What package type is the AMC1311DWVR available in?
The AMC1311DWVR is available in an 8-pin SOIC (DWV) package.
- Does the AMC1311DWVR have any integrated diagnostic features?
Yes, the AMC1311DWVR includes an integrated missing high-side supply voltage detection feature that simplifies system-level design and diagnostics.
- Is the AMC1311DWVR compliant with ROHS standards?
Yes, the AMC1311DWVR is certified to meet ROHS standards.
