Overview
The AMC1300BDWV, produced by Texas Instruments, is a precision, isolated amplifier designed for high-accuracy current measurement applications. This device features a reinforced isolation barrier, providing up to 5 kV RMS of galvanic isolation according to VDE V 0884-11 and UL1577 standards. The AMC1300BDWV is optimized for direct connection to shunt resistors or other low-voltage signal sources, making it ideal for motor control, frequency inverters, and uninterruptible power supplies. The device operates over an extended industrial temperature range of –55°C to +125°C, ensuring reliable performance in harsh environments.
Key Specifications
| Parameter | AMC1300BDWV | Unit |
|---|---|---|
| Input Voltage Range | ±250 mV | mV |
| Fixed Gain | 8.2 | - |
| Offset Error | ±0.2 mV (max) | mV |
| Offset Drift | ±0.9 µV/°C (max) | µV/°C |
| Gain Error | ±0.3% (max) | % |
| Gain Drift | ±30 ppm/°C (max) | ppm/°C |
| Nonlinearity | 0.03% (max) | % |
| High-side Supply Voltage | 3.0 V to 5.5 V | V |
| Low-side Supply Voltage | 3.0 V to 5.5 V | V |
| Common-mode Transient Immunity (CMTI) | 100 kV/µs (min) | kV/µs |
| Output Bandwidth | 250 kHz (min), 310 kHz (typ) | kHz |
| Signal Delay (50% - 90%) | 2.5 µs (max) | µs |
Key Features
- Optimized for shunt-resistor-based current sensing with a ±250-mV input voltage range.
- Fixed gain of 8.2 for simplified system design.
- Low DC errors, including offset error, offset drift, gain error, and gain drift.
- High common-mode transient immunity (CMTI) of 100 kV/µs (minimum).
- Low EMI, compliant with CISPR-11 and CISPR-25 standards.
- System-level diagnostic features, including common-mode overvoltage and missing high-side supply voltage detection.
- Reinforced galvanic isolation certified to 7071-VPK per DIN VDE V 0884-11: 2017-01 and 5000-VRMS isolation for 1 minute per UL1577.
- Operation over an extended industrial temperature range of –55°C to +125°C.
Applications
- Shunt-resistor-based current sensing in motor drives.
- Frequency inverters.
- Uninterruptible power supplies (UPS).
- Other applications requiring precise current measurement and isolation.
Q & A
- What is the input voltage range of the AMC1300BDWV?
The input voltage range is ±250 mV, optimized for current measurement using shunt resistors.
- What is the fixed gain of the AMC1300BDWV?
The fixed gain is 8.2.
- What are the key DC error specifications of the AMC1300BDWV?
The key DC error specifications include an offset error of ±0.2 mV, offset drift of ±0.9 µV/°C, gain error of ±0.3%, and gain drift of ±30 ppm/°C.
- What is the common-mode transient immunity (CMTI) of the AMC1300BDWV?
The CMTI is 100 kV/µs (minimum).
- Is the AMC1300BDWV compliant with any EMI standards?
Yes, it is compliant with CISPR-11 and CISPR-25 standards for low EMI.
- What are the system-level diagnostic features of the AMC1300BDWV?
The device includes common-mode overvoltage detection and missing high-side supply voltage detection.
- What are the safety-related certifications of the AMC1300BDWV?
The device is certified to 7071-VPK per DIN VDE V 0884-11: 2017-01 and 5000-VRMS isolation for 1 minute per UL1577.
- What is the operating temperature range of the AMC1300BDWV?
The operating temperature range is –55°C to +125°C.
- What are the typical applications of the AMC1300BDWV?
Typical applications include shunt-resistor-based current sensing in motor drives, frequency inverters, and uninterruptible power supplies.
- How does the AMC1300BDWV protect lower-voltage parts of a system?
The device separates parts of the system that operate on different common-mode voltage levels, protecting lower-voltage parts from damage through its reinforced galvanic isolation.
