Overview
The AMC1200SDUBR, produced by Texas Instruments, is a precision isolation amplifier designed for high-accuracy current sensing applications. This device features a fully-differential input and output, optimized for direct connection to shunt resistors or other low-voltage level signal sources. The AMC1200SDUBR provides galvanic isolation between the input and output circuits, ensuring protection against noise currents and electrical interference.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | ±250 mV | mV |
| Nonlinearity | 0.075% Maximum at 5 V | % |
| Offset Error | 1.5 mV Maximum | mV |
| Noise | 3.1 mV RMS Typical | mV RMS |
| High-Side Supply Current | 10.8 mA Maximum at 5 V | mA |
| Input Bandwidth | 60 kHz Minimum | kHz |
| Fixed Gain | 8 (0.5% accuracy) | - |
| Common Mode Rejection Ratio | 108 dB | dB |
| Isolation Voltage | 4000 VPEAK (AMC1200), 4250 VPEAK (AMC1200B) | VPEAK |
| Working Voltage | 1200 VPEAK | VPEAK |
| Transient Immunity | 10 kV/µs Minimum | kV/µs |
| Operating Temperature Range | -40°C to 105°C | °C |
| Package | SOP-8 | - |
Key Features
- Galvanic Isolation: Certified to provide galvanic isolation of up to 4250 VPEAK (AMC1200B) or 4000 VPEAK (AMC1200) according to UL1577 and VDE V 0884-10.
- Low Nonlinearity and Offset Error: Ensures high accuracy with a nonlinearity of 0.075% maximum at 5 V and an offset error of 1.5 mV maximum.
- Low Noise: Typical noise of 3.1 mV RMS.
- Low High-Side Supply Current: Maximum of 10.8 mA at 5 V.
- High Common Mode Rejection Ratio: 108 dB.
- Fixed Gain: Gain of 8 with 0.5% accuracy.
- Wide Operating Temperature Range: Fully specified over the extended industrial temperature range of -40°C to 105°C.
Applications
The AMC1200SDUBR is particularly suited for applications requiring precise current sensing and isolation, such as:
- Motor Control Systems: Helps in reducing torque ripple and improving overall system efficiency.
- Power Supplies and DC-DC Converters: Ensures accurate current monitoring and protection against electrical noise.
- Industrial Automation and Control Systems: Provides reliable isolation and accurate signal transmission in noisy environments.
- Medical Devices and Equipment: Offers the necessary isolation and precision for sensitive medical applications.
Q & A
- What is the input voltage range of the AMC1200SDUBR?
The input voltage range is ±250 mV.
- What is the maximum nonlinearity of the AMC1200SDUBR at 5 V?
The maximum nonlinearity is 0.075% at 5 V.
- What is the typical noise level of the AMC1200SDUBR?
The typical noise level is 3.1 mV RMS.
- What is the maximum high-side supply current of the AMC1200SDUBR at 5 V?
The maximum high-side supply current is 10.8 mA at 5 V.
- What is the common mode rejection ratio (CMRR) of the AMC1200SDUBR?
The CMRR is 108 dB.
- What is the fixed gain of the AMC1200SDUBR?
The fixed gain is 8 with 0.5% accuracy.
- What is the isolation voltage of the AMC1200SDUBR?
The isolation voltage is up to 4250 VPEAK (AMC1200B) or 4000 VPEAK (AMC1200).
- What is the operating temperature range of the AMC1200SDUBR?
The operating temperature range is -40°C to 105°C.
- In what package is the AMC1200SDUBR available?
The AMC1200SDUBR is available in an SOP-8 package.
- What are some common applications of the AMC1200SDUBR?
Common applications include motor control systems, power supplies, industrial automation, and medical devices.
