描述 Description

The AMC1411-Q1 is a precision, isolated amplifier with an output separated from the input circuitry by a capacitive isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced galvanic isolation of up to 7.5?kVRMS according to VDE V 0884-11 and UL1577 and supports a working voltage of up to 1600 VRMS.

The isolation barrier separates parts of the system that operate on different common-mode voltage levels and protects the low-voltage side from voltages that can cause electrical damage or be harmful to an operator.

The high-impedance input of the AMC1411-Q1 is optimized for connection to high-impedance resistive dividers or other high-impedance voltage signal source. The excellent DC accuracy and low temperature drift support accurate, isolated voltage sensing in onboard chargers (OBC), DC/DC converters, traction inverters, or other applications that must operate at high common-mode voltages, high altitudes, or in environments with high pollution degrees.

The AMC1411-Q1 is offered in a stretched 8-pin SOIC package and is AEC-Q100 qualified for automotive applications and supports the temperature range from –40°C to +125°C.

特性 Features

? AEC-Q100 qualified for automotive applications:
? Temperature grade 1: –40°C to +125°C, TA

? Functional Safety-Capable
? Documentation available to aid functional safety system design

? 2-V, high-impedance input voltage range optimized for isolated voltage measurements
? Fixed gain: 1.0 V/V
? Low DC errors:
? Offset error ±1.5 mV (max)
? Offset drift: ±10 μV/°C (max)
? Gain error: ±0.2% (max)
? Gain drift: ±30 ppm/°C (max)
? Nonlinearity 0.04% (max)

? 3.3-V or 5-V operation on high-side and low-side
? Missing high-side supply detection feature
? High CMTI: 100 kV/μs (min)
? ≥15.7-mm creepage, stretched SOIC package
? Reinforced isolation:
? 10600-VPK reinforced isolation per DIN VDE V 0884-11: 2017-01
? 7500-VRMS isolation for 1 minute per UL1577