AMC1302 Texas instruments

AMC1302

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AMC1302

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Описание

The AMC1302 is a precision, isolated amplifier with an output separated from the input circuitry by an isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced galvanic isolation of up to 5 kVRMS according to VDE V 0884-11 and UL1577, and supports a working voltage of up to 1.5 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 AMC1302 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 control in PFC stages, DC/DC converters, AC-motor and servo drives over the extended industrial temperature range from –40°C to +125°C.The integrated missing-shunt and missing high-side supply detection features simplify system-level design and diagnostics.

±50-mV input voltage range optimized for shunt-based current measurements
Fixed gain: 41
Low DC errors:
- Offset error: ±50 µV (maximum)
- Offset drift: ±0.8 µV/°C (maximum)
- Gain error: ±0.2% (maximum)
- Gain drift: ±35 ppm/°C (maximum)
- Nonlinearity: 0.03% (maximum)
3.3-V or 5-V operation on high-side and low-side
Fail-safe output
High CMTI : 100 kV/µs (minimum)
Low EMI, meets CISPR-11 and CISPR-25 standards
Safety-related certifications:
- 7071-V_PK reinforced isolation per DIN VDE V 0884-11: 2017-01
- 5000-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)	0.05
Isolation rating	Reinforced
Withstand isolation voltage (VISO) (Vrms)	5000
Working isolation voltage (VIOWM) (Vrms)	1500
Transient isolation voltage (VIOTM) (VPK)	7000
CMTI (min) (kV/µs)	55
Creepage (min) (mm)	8.5
Clearance (min) (mm)	8.5
Input offset (±) (max) (V)	0.0002
Input offset drift (±) (typ) (V/°C)	0.000001
Rating	Catalog
Operating temperature range (°C)	-55 to 125