High-impedance reinforced isolated amplifier for voltage sensing

The Texas Instruments AMC1311-Q1 is a precision, isolated amplifier, for automotive applications, with an output divided from the input circuitry by an isolation barrier that is highly resistant to magnetic interference. This barrier is certified to give reinforced galvanic isolation of up to 7kVPEAK according to VDE V 0884-11 and UL1577. Used in combination with isolated power supplies, this isolated amplifier splits parts of the system that work on different common-mode voltage levels and shields lower-voltage parts from damage. The high-impedance input of the device is optimised for connection to high-voltage resistive dividers or another voltage signal source with high output resistance. The exceptional performance of the device supports accurate, low-temperature drift voltage or temperature sensing and control in closed-loop systems. The integrated missing high-side supply voltage detection feature simplifies system-level design and diagnostics. The device is provided with two performance grade options: AMC1311-Q1 and AMC1311B-Q1.