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具有高 CMTI 的汽车类 2V 输入、精密电压检测增强型隔离式放大器
Device type Voltage sensing
Input range (Vp-p) 2
Isolation working voltage VIOWM (rms) (V) 1600
Isolation transient overvoltage VIOTM (peak) (V) 10600
CMTI (Min) (kV/μs) 100
Input offset (+/-) (Max) (mV) 1.5
Input offset drift (+/-) (Typ) (uV/C) 3
Gain error (+/-) (Max) (%) 0.2
Gain error drift (+/-) (Typ) (ppm/°C) 5
Gain non-linearity (+/-) (Max) (%) 0.04
Small signal bandwidth (Typ) (kHz) 275
Rating Automotive
Operating temperature range (C) -40 to 125
  • 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

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.