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CA-IS1311G-Q1

CA-IS1311G-Q1

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Automotive Isolated Amplifier for Voltage Sensing

The CA-IS1311G-Q1 devices are high-precision reinforcedisolated amplifiers and optimized for voltage sensing. Lowoffset and gain error and drift guarantee that measuringaccuracy is maintained over the entire operatingtemperature range.

The CA-IS1311G-Q1 devices utilize silicon oxide (SiO2)isolation barriers and support up to 5-kVRMS galvanicisolation per UL 1577. This technology separates high- andlow-voltage domain to protect lower-voltage parts fromdamage and provides low emissions as well as strong antinterference capability from magnetic changes. The highcommon-mode transient immunity (CMTI) means that theCA-IS1311G-Q1 devices transmit correct signals throughisolation barriers and are suitable for automotive motorcontrols and drives which require high-voltage and highpower switching. The internal missing or undervoltagelockout (UVLO) of high-side supply voltage detectionfunctions contribute to fault diagnostics and system safety.

The input of CA-IS1311G-Q1 is high-impedance, making itsuitable for applications where the measured signal sourceshave high output resistance (such as high-voltage resistivedividers). The CA-IS1311G-Q1 devices have shutdown mode,which could shut down the high-side circuit by pulling upSHTDN pin to save power.

The CA-IS1311G-Q1 devices are packaged in wide body, 8-pin SOIC packages and specified over the automotivetemperature range of –40°C to 125°C.

Array

  • Features

    Input Voltage Range

    –0.1 V to 2 V

    High Input Impedance

    1 GΩ (typ)

    Fixed Initial Gain

    1

    Low Input Offset and Drift

    ±1.5 mV (max) at 25°C, ±15 μV/°C (max)

    Low Gain Error and Drift

    ±0.3% (max) at 25°C, ±40 ppm/°C (max)

    3.3-V or 5-V Operation for Both High- and Low-Side

    High CMTI: ±150 kV/µs (typ)

    Wide Operating Temperature Range: –40°C to 125°C

    Safety-Related Certifications

    VDE 0884-17 isolation certification
    UL according to UL1577
    IEC 61010-1:2010+A1 certifications

    >40-year Life at Rated Working Voltage

    AEC-Q100 Qualified for Automotive Applications:Grade 1, –40°C to 125°C (TA)

  • Applications

    • Automotive Motor Controls and Drives

    • Onboard Chargers

    • Traction Inverters

    • Charging Piles

  • Device Information

     PART NUMBERPACKAGEBODY SIZE (NOM)
    CAIS1311G-Q1SOIC8-WB (G)5.85 mm × 7.50 mm

  • Simplified Functional Diagram

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