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AMC1200-AMC1200SDUBR
4.25kV peak Isolated Amplifier for Current Shunt Measurements
2.55 V 2 V 2 V
5 V
3.3 V
VDD1 VDD2
VOUTP
VOUTN
VINP
VINN
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AMC1200, AMC1200BSBAS542D –APRIL 2011–REVISED JULY 2015
AMC1200/B Fully-Differential Isolation Amplifier Features 3 DescriptionThe AMC1200 and AMC1200B are precision isolation ±250-mV Input Voltage Range Optimized for amplifiers with an output separated from the inputShunt Resistors circuitry bya silicon dioxide (SiO2) barrier thatis• Very Low Nonlinearity: 0.075% Maximumat5V highly resistantto magnetic interference. This barrier Low Offset Error: 1.5 mV Maximum has been certifiedto provide galvanic isolationof up 4250 VPEAK (AMC1200B) or 4000 VPEAK• Low Noise: 3.1 mVRMS Typical (AMC1200) accordingto UL1577 and VDEV 0884-• Low High-Side Supply Current: 10. Usedin conjunction with isolated power supplies,8 mA Maximumat5V these devices prevent noise currents ona high Input Bandwidth:60 kHz Minimum common mode voltage line from entering the local
ground and interfering with or damaging sensitive• Fixed Gain:8 (0.5% accuracy) circuitry.• High Common Mode Rejection Ratio: 108 dB
The inputof the AMC1200or AMC1200Bis optimized• 3.3-V Operationon Low-Side for direct connectionto shunt resistorsor other low• Certified Galvanic Isolation: voltage level signal sources. The excellent– UL1577 and VDEV 0884-10 Approved performanceof the device supports accurate current
control resultingin system-level power saving and,– Isolation Voltage: 4250 VPEAK (AMC1200B) especiallyin motor-control applications, lower torque– Working Voltage: 1200 VPEAK ripple. The common mode voltage of the output– Transient Immunity:10 kV/µs Minimum signalis automatically adjustedto either the 3-Vor
5-V low-side supply.• Typical 10-Year Lifespanat Rated Working
Voltage (see Application Report SLLA197) The AMC1200 and AMC1200B are fully specified Fully Specified Over the Extended Industrial over the extended industrial temperature range of
Temperature Range –40°Cto 105°C and are availableina wide-body
SOIC-8 package (DWV) anda gullwing-8 package
(DUB).
2 Applications Shunt Resistor Based Current Sensingin:
Device Information(1) Motor Control Green Energy– Frequency Inverters Uninterruptible Power Supplies (1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Simplified Schematic
