Overview
The AMC1200SDUB, produced by Texas Instruments, is a precision isolation amplifier designed to provide high accuracy and reliability in various industrial applications. This device features an output separated from the input circuitry by a silicon dioxide (SiO2) barrier, which offers excellent resistance to magnetic interference and ensures galvanic isolation up to 4000 V PEAK (AMC1200) or 4250 V PEAK (AMC1200B), certified according to UL1577 and VDE V 0884-10 standards. The AMC1200SDUB is optimized for direct connection to shunt resistors or other low-voltage level signal sources, making it ideal for applications requiring accurate current control and system-level power savings, particularly in motor-control scenarios.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage Range | -250 | - | 250 | mV |
| Nonlinearity | - | - | 0.075% | - |
| Offset Error | -1.5 | - | 1.5 | mV |
| Noise (RMS) | - | 3.1 | - | mV |
| High-Side Supply Current | - | - | 8 | mA |
| Input Bandwidth | 60 | - | - | kHz |
| Fixed Gain | - | - | 8 (0.5% accuracy) | - |
| Common Mode Rejection Ratio | - | - | 108 | dB |
| Low-Side Supply Voltage | 2.7 | - | 5.5 | V |
| Isolation Voltage | - | - | 4000 V PEAK (AMC1200) | - |
| Working Voltage | - | - | 1200 V PEAK | - |
| Transient Immunity | 10 | - | - | kV/µs |
| Operating Temperature Range | -40 | - | 105 | °C |
Key Features
- ±250-mV Input Voltage Range Optimized for Shunt Resistors
- Very Low Nonlinearity: 0.075% Maximum at 5 V
- Low Offset Error: 1.5 mV Maximum
- Low Noise: 3.1 mV RMS Typical
- Low High-Side Supply Current: 8 mA Maximum at 5 V
- Input Bandwidth: 60 kHz Minimum
- Fixed Gain: 8 (0.5% accuracy)
- High Common Mode Rejection Ratio: 108 dB
- 3.3-V Operation on Low-Side
- Certified Galvanic Isolation: UL1577 and VDE V 0884-10 Approved
- Transient Immunity: 10 kV/µs Minimum
- Typical 10-Year Lifespan at Rated Working Voltage
- Fully Specified Over the Extended Industrial Temperature Range
Applications
- Shunt Resistor Based Current Sensing in Motor Control
- Green Energy Systems
- Frequency Inverters
- Uninterruptible Power Supplies (UPS)
Q & A
- What is the primary function of the AMC1200SDUB?
The AMC1200SDUB is a precision isolation amplifier designed to provide accurate and reliable signal isolation and amplification in industrial applications.
- What is the input voltage range of the AMC1200SDUB?
The input voltage range is ±250 mV, optimized for shunt resistors.
- What is the nonlinearity of the AMC1200SDUB?
The nonlinearity is 0.075% maximum at 5 V.
- What is the offset error of the AMC1200SDUB?
The offset error is 1.5 mV maximum.
- What is the noise level of the AMC1200SDUB?
The noise level is 3.1 mV RMS typical.
- What is the high-side supply current of the AMC1200SDUB?
The high-side supply current is 8 mA maximum at 5 V.
- What is the input bandwidth of the AMC1200SDUB?
The input bandwidth is 60 kHz minimum.
- What is the fixed gain of the AMC1200SDUB?
The fixed gain is 8 with 0.5% accuracy.
- What is the common mode rejection ratio of the AMC1200SDUB?
The common mode rejection ratio is 108 dB.
- What are the operating temperature ranges for the AMC1200SDUB?
The operating temperature range is -40°C to 105°C.
- What certifications does the AMC1200SDUB have for galvanic isolation?
The AMC1200SDUB is certified according to UL1577 and VDE V 0884-10 standards.
