Overview
The AMC1200BDUBR, produced by Texas Instruments, is a fully-differential isolation amplifier designed to provide high accuracy and reliability in various industrial and automotive applications. This device features a silicon dioxide (SiO2) barrier that ensures galvanic isolation between the input and output circuits, protecting against magnetic interference and noise currents. The AMC1200BDUBR is optimized for use with shunt resistors and other low-voltage signal sources, making it ideal for current sensing and motor control systems.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | ±250 mV |
| Nonlinearity | 0.075% Maximum at 5 V |
| Offset Error | 1.5 mV Maximum |
| Noise | 3.1 mVRMS Typical |
| High-Side Supply Current | 10.8 mA Maximum at 5 V |
| Input Bandwidth | 60 kHz Minimum |
| Fixed Gain | 8 (0.5% accuracy) |
| Common Mode Rejection Ratio | 108 dB |
| Isolation Voltage | 4250 VPEAK (AMC1200B) |
| Working Voltage | 1200 VPEAK |
| Transient Immunity | 10 kV/µs Minimum |
| Operating Temperature Range | –40°C to 105°C |
| Package | SOP-8 |
Key Features
- Galvanic isolation up to 4250 VPEAK (AMC1200B) or 4000 VPEAK (AMC1200), certified by UL1577 and VDE V 0884-10.
- Very low nonlinearity and offset error, ensuring high accuracy in current sensing applications.
- Low noise and high common mode rejection ratio (CMRR) for reliable signal processing.
- Fixed gain of 8 with 0.5% accuracy.
- Operation on 3.3-V or 5-V low-side supply.
- High transient immunity of 10 kV/µs.
- Fully specified over the extended industrial temperature range of –40°C to 105°C.
Applications
The AMC1200BDUBR is widely used in various applications, including:
- Current sensing in motor control systems to reduce torque ripple and improve system efficiency.
- Industrial automation for accurate measurement and control of electrical currents.
- Automotive systems for reliable and isolated current sensing.
- Power supplies and DC-DC converters where isolated feedback is necessary.
Q & A
- What is the primary function of the AMC1200BDUBR?
The AMC1200BDUBR is a fully-differential isolation amplifier designed for accurate current sensing and signal isolation in various industrial and automotive applications. - What is the input voltage range of the AMC1200BDUBR?
The input voltage range is ±250 mV. - What is the isolation voltage rating of the AMC1200BDUBR?
The isolation voltage rating is up to 4250 VPEAK for the AMC1200B model. - What is the typical noise level of the AMC1200BDUBR?
The typical noise level is 3.1 mVRMS. - What is the fixed gain of the AMC1200BDUBR?
The fixed gain is 8 with 0.5% accuracy. - What is the operating temperature range of the AMC1200BDUBR?
The operating temperature range is –40°C to 105°C. - What package type is the AMC1200BDUBR available in?
The AMC1200BDUBR is available in an SOP-8 package. - What are some common applications of the AMC1200BDUBR?
Common applications include motor control systems, industrial automation, automotive systems, and power supplies. - Is the AMC1200BDUBR certified for galvanic isolation?
Yes, it is certified by UL1577 and VDE V 0884-10 for galvanic isolation. - What is the transient immunity of the AMC1200BDUBR?
The transient immunity is 10 kV/µs.
