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CA-IS1200U

CA-IS1200U

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Full-differential Isolated Amplifier

The CA-IS1200 devices are high-precision isolated amplifiers and optimized for shunt-resistor-based current sensing. Low offset and gain error and drift guarantee that measuring accuracy is maintained over the entire operating temperature range.

The CA-IS1200 devices utilize silicon oxide (SiO2) isolation barriers and support up to 3750-VRMS (CA-IS1200U) or 5000- VRMS (CA-IS1200G) galvanic isolation per UL 1577. This technology separates high- and low-voltage domain to protect lower-voltage parts from damage and provides low emissions as well as strong anti-interference capability from magnetic changes. The high common-mode transient immunity (CMTI) means that the CA-IS1200 devices transmit correct signals through isolation barriers and are suitable for industrial motor controls and drives which require high-voltage and high-power switching. The internal input common-mode overvoltage and missing high-side supply voltage detection functions contribute to fault diagnostics and system safety.

The CA-IS1200 devices are packaged in 8-pin DUB or widebody SOIC packages and specified over the extended industrial temperature range of –40°C to 125°C.

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  • Features

    Differential Input Voltage Range

    ±250 mV

    Fixed Initial Gain

    8

    Low Input Offset and Drift

    ±1 mV (max) at 25°C, ±4 μV/°C (max)

    Low Gain Error and Drift

    ±0.5% (max) at 25°C, ±50 ppm/°C (max)

    Low Nonlinearity and Drift

    0.01% (typ) for Full Scale, ±1 ppm/°C (typ)

    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

    7070-VPK (CA-IS1200G) Isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    5000-VRMS (CA-IS1200G) Isolation for 1 Minute per UL 1577
    TUV Certification Approvals

  • Applications

    • Industrial Motor Controls and Drives

    • Isolated Switch Mode Supplies

    • Uninterruptible Power Supplies

  • Device Information

    PART NUMBER PACKAGE BODY SIZE (NOM)
    CA-IS1200U DUB8 (U) 9.20 mm × 6.62 mm
    CA-IS1200G SOIC8-WB (G) 5.85 mm × 7.50 mm

  • Simplified Functional Diagram

    ca-is1200u.png