Texas Instruments AMC1301/AMC1301-Q1 Reinforced Isolated Amplifier
Texas Instruments AMC1301/AMC1301-Q1 Reinforced Isolated Amplifier is a precision, isolated amplifier with an output separated from the input circuitry by an isolation barrier. This isolation barrier is highly resistant to magnetic interference. This barrier is certified to provide reinforced galvanic isolation of up to 7kVPEAK according to VDE-V 0884-10 and UL1577. This device prevents noise currents on a high common-mode voltage line from entering the local ground and interfering with or damaging sensitive circuitry using isolated power supplies.
The input of the AMC1301/AMC1301-Q1 is optimized for direct connection to shunt resistors or other low voltage level signal sources. The excellent performance of the device supports accurate, current control resulting in system-level power savings and, especially in motor control applications, lower torque ripple. The integrated common-mode overvoltage and missing high-side supply voltage detection features of the AMC1301/AMC1301-Q1 simplify system-level design and diagnostics. The AMC1301/AMC1301-Q1 is fully specified over the extended industrial temperature range of –40°C to +125°C and is available in a wide-body 8-pin SOIC package. The Texas Instruments AMC1301-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
- ±250mV input voltage range optimized for current measurement using shunt resistors
- Low offset error and drift
- ±200μV (max.) at 25°C, ±3μV/°C (max.)
- 8.2 fixed gain
- Very low gain error and drift
- ±0.3% (max.) at 25°C, ±50ppm/°C (max.)
- Very low non-linearity and drift
- 0.03% (max.), 1ppm/°C (typ.)
- 3.3V operation on high-side and low-side
- System-level diagnostic features
- Safety and regulatory approvals
- 7000VPK reinforced isolation per DIN V VDE-V 0884-10 (VDE-V 0884-10): 2006-12
- 5000VRMS isolation for 1 minute per UL1577
- CAN/CSA No. 5A-Component Acceptance Service Notice, IEC 60950-1, and IEC 60065 End Equipment Standards
- Fully specified over the extended industrial temperature range
Applications
- Shunt-resistor-based current sensing in
- Motor drives
- Frequency inverters
- Uninterruptible power supplies
- Isolated voltage sensing
Datasheets
Simplified Schematic
Related Development Tools
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