Overview
The AMC1301SDWV is a precision, isolated amplifier produced by Texas Instruments. This device is designed to provide high accuracy and reliability in current sensing applications. It features an isolation barrier that separates the input circuitry from the output, ensuring protection against high common-mode voltage levels and magnetic interference. The AMC1301SDWV is certified to provide reinforced isolation of up to 7070 V PEAK according to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 standards, and supports a working voltage up to 1 kV RMS. The device operates over an extended industrial temperature range of –40°C to +125°C and is available in a wide-body 8-pin SOIC (DWV) package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | ±250 mV | mV |
| Fixed Gain | 8.2 V/V | V/V |
| Offset Error | ±0.2 mV (max) | mV |
| Offset Drift | ±3 µV/°C (max) | µV/°C |
| Gain Error | ±0.3% (max) | % |
| Gain Drift | ±50 ppm/°C (max) | ppm/°C |
| Nonlinearity | 0.03% (max) | % |
| Operating Temperature Range | –40°C to +125°C | °C |
| Package Type | 8-pin SOIC (DWV) | - |
| High-side and Low-side Supply Voltage | 3.0 V to 5.5 V | V |
| Isolation Voltage | 7070 V PEAK, 5000 V RMS for 1 minute | V |
Key Features
- ±250-mV input voltage range optimized for current measurements using shunt resistors
- Fixed gain of 8.2 V/V
- Low DC errors: offset error, offset drift, gain error, gain drift, and nonlinearity
- 3.3-V operation on both high-side and low-side
- System-level diagnostic features including common-mode overvoltage and missing high-side supply voltage detection
- Safety-related certifications: 7070-V PEAK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17) and 5000-V RMS isolation for 1 minute per UL1577
- Fully specified over the extended industrial temperature range: –40°C to +125°C
Applications
- Shunt-resistor-based current sensing in motor drives, frequency inverters, and uninterruptible power supplies
- Onboard chargers (OBC), DC/DC converters, and other high-voltage applications
Q & A
- What is the input voltage range of the AMC1301SDWV?
The input voltage range is ±250 mV, optimized for current measurements using shunt resistors.
- What is the fixed gain of the AMC1301SDWV?
The fixed gain is 8.2 V/V.
- What are the key DC error specifications of the AMC1301SDWV?
The key DC error specifications include offset error (±0.2 mV max), offset drift (±3 µV/°C max), gain error (±0.3% max), gain drift (±50 ppm/°C max), and nonlinearity (0.03% max).
- What is the operating temperature range of the AMC1301SDWV?
The operating temperature range is –40°C to +125°C.
- What type of package is the AMC1301SDWV available in?
The device is available in a wide-body 8-pin SOIC (DWV) package.
- What are the safety-related certifications of the AMC1301SDWV?
The device is certified for 7070-V PEAK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17) and 5000-V RMS isolation for 1 minute per UL1577.
- What are some of the system-level diagnostic features of the AMC1301SDWV?
The device includes common-mode overvoltage and missing high-side supply voltage detection features.
- What are the typical applications of the AMC1301SDWV?
Typical applications include shunt-resistor-based current sensing in motor drives, frequency inverters, and uninterruptible power supplies, as well as onboard chargers (OBC) and DC/DC converters.
- How does the AMC1301SDWV protect against high common-mode voltage levels?
The device features an isolation barrier that separates the input circuitry from the output, providing protection against high common-mode voltage levels and magnetic interference.
- What is the maximum junction temperature of the AMC1301SDWV?
The maximum junction temperature can be calculated using the thermal derating curves provided in the datasheet, but it generally follows the operating ambient temperature range specifications.
