AMC1311BDWV Description

The AMC1311BDWV is a precision, isolated amplifier with an isolation barrier that is highly resistant to magnetic interference between the output and the input circuitry. According to VDE V 0884-11 and UL1577, this barrier is certified to provide reinforced galvanic isolation of up to 7 kV peak. This isolated amplifier separates portions of the system that run on different common-mode voltage levels and protects lower-voltage parts from damage when used in conjunction with an isolated power supply. The AMC1311BDWV's high-impedance input is designed for use with high-voltage resistive dividers and other voltage signal sources with high output resistance. In closed-loop systems, the device's exceptional performance allows for accurate, low-temperature drift voltage or temperature detection and control. The built-in detection of a missing high-side supply voltage simplifies system-level design and diagnostics.

AMC1311BDWV Features

• 2-V, high-impedance input voltage range optimized for isolated voltage measurement

• Low offset error and drift

• Fixed gain: 1

• Very low gain error and drift

• Low nonlinearity and drift: 0.01%, 1 ppm/°C (typ)

• 3.3-V operation on high-side (AMC1311B)

• Missing high-side supply indication

AMC1311BDWV Applications

• Motor drives

• Frequency inverters

• Uninterruptible power supplies