深圳市谷科智电子有限公司

FEATURES DESCRIPTION

2 The AMC1200 is a precision isolation amplifier with • ±250-mV Input Voltage Range Optimized for

an output separated from the input circuitry by a Shunt Resistors

silicon dioxide (SiO2

) barrier that is highly resistant to

• Very Low Nonlinearity: 0.075% max at 5 V magnetic interference. This barrier has been certified

• Low Offset Error: 1.5 mV max to provide galvanic isolation of up to 4000 VPEAK

according to UL1577 and IEC60747-5-2. Used in • Low Noise: 3.1 mVRMS typ

conjunction with isolated power supplies, this device

• Low High-Side Supply Current: 8 mA max at prevents noise currents on a high common-mode

5 V voltage line from entering the local ground and

• Input Bandwidth: 60 kHz min interfering with or damaging sensitive circuitry.

• Fixed Gain: 8 (0.5% accuracy) The input of the AMC1200 is optimized for direct

• High Common-Mode Rejection Ratio: 108 dB connection to shunt resistors or other low voltage

level signal sources. The excellent performance of • 3.3-V Operation on Low-Side the device supports accurate current control resulting

• Certified Galvanic Isolation: in system-level power saving and, especially in

– UL1577 and IEC60747-5-2 Approved motor-control applications, lower torque ripple. The

common-mode voltage of the output signal is – Isolation Voltage: 4000 VPEAK automatically adjusted to either the 3-V or 5-V

– Working Voltage: 1200 VPEAK low-side supply.

– Transient Immunity: 10 kV/μs min The AMC1200 is fully specified over the extended

• Typical 10-Year Lifespan at Rated Working industrial temperature range of –40 °C to +105 °C

Voltage (see Application Report SLLA197) and is available in the SMD-type, gullwing-8 package.

• Fully Specified Over the Extended Industrial

Temperature Range

APPLICATIONS

• Shunt Resistor Based Current Sensing in:

– Motor Control

– Green Energy

– Frequency Inverters

– Uninterruptible Power Supplies