Overview
The AMC1100DUBR, produced by Texas Instruments, is a precision isolation amplifier designed to provide high accuracy and reliability in various industrial and measurement applications. This device features an output that is separated from the input circuitry by a silicon dioxide (SiO2) barrier, which offers excellent galvanic isolation and resistance to magnetic interference. The AMC1100 is optimized for direct connection to shunt resistors or other low-voltage level signal sources, making it ideal for current and voltage measurements in energy-metering applications.
The device operates over an extended industrial temperature range of –40°C to +105°C and is available in SMD-type packages, including the wide-body SOIC-8 (DWV) and gullwing-8 (DUB) packages. It is powered by a 5-V nominal supply on the high-side and can operate with a low-side supply voltage of 3.3 V.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | -250 | 250 | mV | |
| Nonlinearity | 0.075% | |||
| Offset Error | 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 | |||
| Operating Temperature Range | -40 | 105 | °C | |
| Isolation Voltage (Peak) | 4250 V | |||
| Transient Immunity | 2.5 kV/µs |
Key Features
- Highly resistant to magnetic interference due to the SiO2 barrier.
- Optimized for direct connection to shunt resistors or other low-voltage level signal sources.
- Very low nonlinearity: 0.075% max at 5 V.
- Low offset error: 1.5 mV max.
- Low noise: 3.1 mV RMS.
- Low high-side supply current: 8 mA max at 5 V.
- Input bandwidth: 60 kHz min.
- Fixed gain: 8 (0.5% Accuracy).
- High common-mode rejection ratio: 108 dB.
- Low-side operation: 3.3 V.
- Safety-related certifications: 4250-V peak isolation per DIN VDE V 0884-11: 2017-01, 3005-V RMS isolation for 1 minute per UL1577, and compliance with CAN/CSA no. 5A-component acceptance service notice and DIN EN 61010-1 standard.
- Working voltage: 1200 V peak.
- Transient immunity: 2.5 kV/µs min.
Applications
- Shunt resistor-based current sensing in electricity meters.
- String inverters.
- Power measurement applications.
- Any application requiring accurate current and voltage measurements with high isolation and low noise.
Q & A
- What is the primary function of the AMC1100DUBR?
The AMC1100DUBR is a precision isolation amplifier designed to provide accurate current and voltage measurements with high galvanic isolation.
- What is the input voltage range of the AMC1100DUBR?
The input voltage range is ±250 mV, optimized for direct connection to shunt resistors or other low-voltage level signal sources.
- What is the nonlinearity of the AMC1100DUBR?
The nonlinearity is 0.075% max at 5 V.
- What is the offset error of the AMC1100DUBR?
The offset error is 1.5 mV max.
- What is the noise level of the AMC1100DUBR?
The noise level is 3.1 mV RMS.
- What is the high-side supply current of the AMC1100DUBR?
The high-side supply current is 8 mA max at 5 V.
- What is the input bandwidth of the AMC1100DUBR?
The input bandwidth is 60 kHz min.
- What is the fixed gain of the AMC1100DUBR?
The fixed gain is 8 with 0.5% accuracy.
- What safety certifications does the AMC1100DUBR have?
The device has certifications for 4250-V peak isolation per DIN VDE V 0884-11: 2017-01, 3005-V RMS isolation for 1 minute per UL1577, and compliance with CAN/CSA no. 5A-component acceptance service notice and DIN EN 61010-1 standard.
- What is the operating temperature range of the AMC1100DUBR?
The operating temperature range is –40°C to +105°C.
