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    Silicon Labs, Current Shunt Monitor Single Differential 16-Pin SOIC

    RS Stock No.:
    901-3973
    Mfr. Part No.:
    Si8920BD-IS
    Manufacturer:
    Silicon Labs
    Silicon Labs

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    View all Current Sensing Amplifiers
    Discontinued product
    RS Stock No.:
    901-3973
    Mfr. Part No.:
    Si8920BD-IS
    Manufacturer:
    Silicon Labs
    COO (Country of Origin):
    TW

    Legislation and Compliance

    COO (Country of Origin):
    TW

    Product Details

    Si8920 Isolated Amplifier for Current Shunt Measurement


    The Si8920 is a galvanically isolated analogue amplifier. Their low voltage and differential input is ideal for measuring voltage across a current shunt resistor or for any place where a sensor must be isolated from the control system.

    Output is a differential analogue signal amplified by either 8.1x or 16.2x. The very low signal delay allows control systems to respond quickly to fault conditions or changes in load. Low offset and gain drift ensure that accuracy is maintained over the entire operating temperature range.

    High common mode transient immunity means that the Si8920 will deliver accurate measurements even in the presence of high power switching like would be found in a motor drive system or inverter.

    To help evaluate the Si8920 there is a dedicated development kit available - SI8920ISO-KIT (RS 9026806). It is populated with the Si8920BC-IP and enables quick connection to a shunt resistor.

    The Si8920 is available in 4 variants:
    Si8920AC-IP (RS 901-3967) with an input range of ±100 mV in a Gull-Wing DIP-8 package
    Si8920BC-IP (RS 901-3976) with an input range of ±200 mV in a Gull-Wing DIP-8 package
    Si8920AD-IS (RS 901-3979) with an input range of ±100 mV in a SOIC-16 package
    Si8920BD-IS (RS 901-3973) with an input range of ±200 mV in a SOIC-16 package


    Current Sensing Amplifiers have a voltage output that is proportional to the volt drop across a very low value resistor, usually in a high-current power rail. Hence they measure the current flowing in that power rail.

    Specifications

    AttributeValue
    Power Supply TypeSingle
    Typical Single Supply Voltage3 → 5.5 V
    Number of Channels per Chip2
    Output TypeDifferential
    Maximum Supply Current5.5 mA
    Mounting TypeSurface Mount
    Package TypeSOIC
    Pin Count16
    Dimensions10.3 x 7.5 x 2.35mm
    Height2.35mm
    Length10.3mm
    Maximum Operating Supply Voltage5.5 V
    Width7.5mm
    Minimum Operating Supply Voltage3 V
    Minimum Operating Temperature-40 °C
    Maximum Operating Temperature+125 °C
    Discontinued product