Overview
The AMC1100DWVR is a precision isolation amplifier produced by Texas Instruments. This device features an output separated from the input circuitry by a silicon dioxide (SiO2) barrier, providing high resistance to magnetic interference. The AMC1100 is designed to prevent noise currents on high common-mode voltage lines from interfering with or damaging sensitive circuitry, making it ideal for applications requiring accurate current and voltage measurements.
The device is fully specified over an extended industrial temperature range of –40°C to +105°C and is available in an 8-pin SOIC (DWV) package. It operates with a fixed gain of 8 and has a high common-mode rejection ratio of 108 dB, ensuring reliable performance in various industrial environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC-8 (DWV) | |
| Pins | 8 | |
| Operating Temperature Range | –40 to 105 | °C |
| Input Voltage Range | ±250 mV | mV |
| Nonlinearity | 0.075% max | % |
| Offset Error | 1.5 mV max | mV |
| Noise (RMS) | 3.1 mV | mV |
| High-Side Supply Current | 8 mA max at 5 V | mA |
| Input Bandwidth | 60 kHz min | kHz |
| Fixed Gain | 8 (0.5% Accuracy) | |
| Common-Mode Rejection Ratio | 108 dB | dB |
| Low-Side Operation | 3.3 V | V |
| Isolation Voltage (Peak) | 4250 V | V |
| Transient Immunity | 2.5 kV/µs min | kV/µs |
Key Features
- ±250-mV input voltage range optimized for shunt resistors
- 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 basic isolation per DIN VDE V 0884-11: 2017-01, 3005-V RMS isolation for 1 minute per UL1577, 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
The AMC1100 is particularly useful in scenarios where accurate current and voltage measurements are crucial, and where galvanic isolation is necessary to protect sensitive circuitry from noise and interference.
Q & A
- What is the primary function of the AMC1100DWVR?
The AMC1100DWVR is a precision isolation amplifier designed to provide accurate current and voltage measurements while isolating the output from the input circuitry to prevent noise interference.
- What is the input voltage range of the AMC1100DWVR?
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 AMC1100DWVR?
The nonlinearity is 0.075% max at 5 V.
- What is the common-mode rejection ratio (CMRR) of the AMC1100DWVR?
The CMRR is 108 dB.
- What is the isolation voltage rating of the AMC1100DWVR?
The device is certified for 4250 V peak basic isolation and 3005 V RMS isolation for 1 minute.
- What are the safety-related certifications for the AMC1100DWVR?
The device complies with DIN VDE V 0884-11: 2017-01, UL1577, CAN/CSA no. 5A-component acceptance service notice, and DIN EN 61010-1 standard.
- What is the operating temperature range of the AMC1100DWVR?
The operating temperature range is –40°C to +105°C.
- What is the input bandwidth of the AMC1100DWVR?
The input bandwidth is 60 kHz min.
- What is the fixed gain of the AMC1100DWVR?
The fixed gain is 8 with a 0.5% accuracy.
- In what applications is the AMC1100DWVR commonly used?
The AMC1100DWVR is commonly used in shunt resistor-based current sensing in electricity meters, string inverters, and power measurement applications.
- What package types are available for the AMC1100DWVR?
The device is available in an 8-pin SOIC (DWV) package.
