Texas Instruments AMC3330/AMC3330-Q1 Precision Isolated Amplifier
Texas Instruments AMC3330/AMC3330-Q1 Precision Isolated Amplifier comes with a fully integrated, isolated DC/DC converter that allows single-supply operation from the low side of the device. The reinforced capacitive isolation barrier is certified according to VDE V 0884-11 and UL1577. The barrier separates sections of the system that operate on different common-mode voltage levels and protects low-voltage domains from damage.
The input of the AMC3330/AMC3330-Q1 is optimized for direct connection to high-impedance, voltage-signal sources such as a resistor-divider network to sense high-voltage signals. The integrated isolated DC/DC converter allows the measurement of non-ground-referenced signals and makes the device a unique solution for noisy, space-constrained applications.
The device's excellent performance supports accurate voltage monitoring and control. The integrated DC/DC converter fault detection and diagnostic output pin of the AMC3330/AMC3330-Q1 simplify system-level design and diagnostics. The Texas Instruments AMC3330/AMC3330-Q1 is specified over the temperature range of –40°C to +125°C. The AMC3330-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
- 3.3V or 5V single-supply operation with integrated DC/DC converter
- ±1V input voltage range optimized for voltage measurements with a high input impedance
- 2.0 fixed gain
- Low DC errors
- ±0.2% (max) gain error
- ±45ppm/°C (max) gain drift
- ±0.3mV (max) offset error
- ±4µV/°C (max) offset drift
- ±0.02% (max) non-linearity
- 85kV/µs (min) high CMTI
- System-level diagnostic features
- Safety-related certifications
- 6000VPK reinforced isolation per DIN VDE V 0884-11 (VDE V 0884-11): 2017-01
- 4250VRMS isolation for 1 minute per UL1577
- Meets CISPR-11 and CISPR-25 EMI standards
Applications
- Isolated voltage sensing in
- Motor drives
- Photovoltaic inverters
- Power delivery systems
- Electricity meters
- Protection relays
Datasheets
Functional Block Diagram
Related Development Tool
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Evaluate AMC3301, ANC3302, or AMC3330, an isolated amplifier with an integrated DC/DC converter.