Microchip Technology Inc

PAC1921

In Production

     The PAC1921 is a dedicated power-monitoring device with a configurable analog output that can present power, current or voltage. All information is also provided on the 2-wire/I2C© compatible interface.  The PAC1921 is designed for power measurement and diagnostic systems that cannot allow for latency when performing high-speed power management. The device is 0.4% accurate for current readings and 1% accurate for power readings.
     Measurements are accumulated in large registers, allowing for integration periods of 500 μs to 2.9 seconds. The measurement is averaged and presented on the analog output with a full scale range of 3V, 2V, 1.5V, or 1.0V.
      The PAC1921 has a READ/INT pin for host control of the measurement integration period. This pin can be used to synchronize readings of multiple buses between several devices. Data sampling and output attributes, such as the internal ADC resolution (11-bit or 14-bit) and sample rate, are configurable.   The device can monitor power rails from 0-32V with a full-scale capability of 100 mV across the sense resistor. No input filters are required for this device.

 

    Features

        • Configurable Measurement Type Output: Power, Current or Bus Voltage
        • Configurable Voltage Output (3V, 2V, 1.5V, 1V)
          •  All output values also available over SMBus>
        • New Device Topology
          • Provides integrated average power measurement
          • Power measurements provided to micro-controller with ADC inputs
          • Output voltage proportional to selected measurement>
        • High-Side Current Sensor
          • 100 mV full-scale current sense voltage range
          • Second-order delta-sigma ADC with 11-bit or 14-bit resolution
          • Selectable current binary gain ranges: 1x through 128x>
        • 1% Power Measurement Accuracy
        • Auto-Zero Offset>
        • Auto Sleep State>- Automatically shifts to low-power state (3.5 μA)
        • VDD = 3.3V nominal (operational range 3.0V to 5.5V)>
        • Bus Range 0V to 32V>
        • No Input Filters Required>
        • 10-pin 3 mm x 3 mm VDFN RoHS Compliant Package
    Parameter Name
    Value
    # Current Sensors
    1
    Description
    Current/DC Power Sensor
    Full Scale Range (mV)
    100
    Current Measuerment Max Accr (%)
    +/-0.4
    Effective Sampling Interval min to max (msec)
    0.9 - 2900
    Bus Voltage Range (V)
    0 to +32
    Interface
    SMBus/I2C
    Address Select
    yes
    Documentation
    Data Sheets
    10/21/2016
    642KB
      Software
     
     
     
     
    Software
    05/05/2015
    126095KB
      BOM
     
     
     
     
    BOM
    05/05/2015
    19KB
      Gerber Files
     
     
     
     
    Gerber Files
    05/05/2015
    599KB
      aspxMarketCommunication
     
     
     
     
    Market Communication
    06/08/2015
    803KB
      Schematics
     
     
     
     
    Schematics
    05/05/2015
    5867KB
    Pricing & Samples
    All pricing shown in USD only.
    Part Number
    Leads
    Package Type
    Temp Range
    Packing
    1+
    26+
    100+
    1000+
    5000+
    Buy
    Sample
    PAC1921-1-AIA-TR
    10
    VDFN
    -40C to +125C
    T/R
    0.93
    0.78
    0.71
    0.68
    0.67

    ** Device not available to purchase online. Please contact a sales office for pricing information.
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    Development Tools
    • Demo & Eval Boards
    • PAC1921 High Side Power and Current Monitor Evaluation Board ( ADM00592 )

      PAC1921

      The PAC1921 is a dedicated power monitoring device with a configurable analog output. This device is unique in that all power related information is available on the 2-wire/I2C© compatible interface and power, current, or voltage is available on the analog output..  The PAC1921 High-Side Current/Power Sensor Evaluation Board package provides users with the means to...

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    RoHS Information
    Part
    Number
    Device
    Weight
    Shipping
    Weight
    Lead
    Count
    Package
    Type
    Package
    Width
    Solder
    Composition
    JEDEC
    Indicator
    RoHS
     
    China
    EFUP
    PAC1921-1-AIA-TR
    0.027700
    0.114000
    10
    VDFN
    3x3x0.9
    NiPdAu
    e4
    To see a complete listing of RoHS data for this device, please Click here
    Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.
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