AMC1200SDUBR SOP-8_ 6.6mm isolation amplifier price advantage

explain

Amc1200 and amc1200b are high-precision isolation amplifiers, which isolate the output and input circuits through silica (SiO2) isolation layer with high magnetic field immunity. The isolation layer is certified by ul1577 and VDE V 0884-10 standards and can provide current isolation up to 4250 Vpeak (amc1200b) or 4000 Vpeak (amc1200).

When used in conjunction with isolated power supplies, these devices prevent noise currents on common mode high voltage lines from entering local ground and interfering with or damaging sensitive circuits. The input of the amc1200 or amc1200b is optimized for direct connection to shunt resistors or other low-voltage signal sources. The device has excellent performance and supports precise current control, which reduces system level power consumption (especially in motor control applications) and torque ripple. The common mode voltage of the output signal can be automatically adjusted to 3V or 5V low side power supply voltage.

Amc1200 and amc1200b are fully rated for operation in the extended industrial temperature range (– 40 ° C to 105 ° C) and are packaged in wide body 8-pin small overall size integrated circuit (SOIC) (DWV) and Gullwing 8 (DUB).

characteristic

• input voltage range of ± 250Mv optimized for shunt resistance

• very low nonlinearity: 0.075% maximum at 5V

• low offset error: maximum 1.5MV

• low noise: 3.1mvrms (typ.)

• maximum power supply current at low side: 8Ma

• input bandwidth: min. 60KHZ

• fixed gain: 8 (accuracy 0.5%)

• high common mode rejection ratio: 108db

• 3.3V low side operating voltage

• certified current isolation:

– approved by ul1577 and VDE V 0884-10

– isolation voltage: 4250 Vpeak (amc1200b)

– working voltage: 1200 Vpeak – transient immunity: 10kV / µ s (minimum)

• the service life at rated working voltage is usually 10 years

• can operate in extended industrial temperature range

application

• current sensing based on shunt resistors in the following applications:

– motor control

– green energy

– frequency converter

– uninterruptible power supply
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