AMC3301 Texas instruments

AMC3301

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AMC3301

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Описание

The AMC3301 is a precision, isolated amplifier optimized for shunt-based current measurements. The fully integrated, isolated DC/DC converter allows single-supply operation from the low-side of the device, which makes the device a unique solution for space-constrained applications. The reinforced capacitive isolation barrier is certified according to VDE V 0884-11 and UL1577 and supports a working voltage of up to 1.2 kVRMS.The isolation barrier separates parts of the system that operate on different common-mode voltage levels and protects the low-voltage side from hazardous voltages and damage.The input of the AMC3301 is optimized for direct connection to a low-impedance shunt resistor or other, low-impedance voltage source with low signal levels. The excellent DC accuracy and low temperature drift supports accurate current measurements over the extended industrial temperature range from –40°C to +125°C.The integrated DC/DC converter fault-detection and diagnostic output pin of the AMC3301 simplify system-level design and diagnostics.

3.3-V or 5-V single supply with integrated DC/DC converter
±250-mV input voltage range optimized for current measurement using shunt resistors
Fixed gain: 8.2
Low DC errors:
- Offset voltage: ±150 µV (max)
- Offset drift: ±1 µV/°C (max)
- Gain error: ±0.2% (max)
- Gain error drift: ±40 ppm/°C (max)
- Nonlinearity: ±0.04% (max)
High CMTI: 85 kV/µs (min)
System-level diagnostic features
Meets CISPR-11 and CISPR-25 EMI standards
Safety-related certifications:
- 6000-V_PK reinforced isolation per DIN VDE V 0884-11
- 4250-V_RMS isolation for 1 minute per UL1577
Fully specified over the extended industrial temperature range: –40°C to +125°C

Device type	Current sensing
Peak-to-peak input voltage range (V)	0.25
Isolation rating	Reinforced
Withstand isolation voltage (VISO) (Vrms)	4250
Working isolation voltage (VIOWM) (Vrms)	1200
Transient isolation voltage (VIOTM) (VPK)	6000
CMTI (min) (kV/µs)	85
Creepage (min) (mm)	8
Clearance (min) (mm)	8
Input offset (±) (max) (V)	0.00015
Input offset drift (±) (typ) (V/°C)	0.00000015
Rating	Catalog
Operating temperature range (°C)	-40 to 125