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ManufacturerLinear Technology
SeriesLTC2990

Quad I2C Voltage, Current and Temperature Monitor

Datasheets

  • Download » Datasheet, PDF, 304 Kb, Revision: E, File uploaded 09-25-2017
    LTC2990 - Quad I2C Voltage, Current and Temperature Monitor
    Docket ↓
    LTC2990
    Quad I2C Voltage, Current
    and Temperature Monitor
    Features Description Measures Voltage, Current and Temperature
    nn Measures Two Remote Diode Temperatures
    nn ±0.5°C Accuracy, 0.06°C Resolution (Typ)
    nn ±1°C Internal Temperature Sensor (Typ)
    nn 14-Bit ADC Measures Voltage/Current
    nn 3V to 5.5V Supply Operating Voltage
    nn Four Selectable Addresses
    nn Internal 10ppm/°C Voltage Reference
    nn 10-Lead MSOP Package The LTC®2990 is used to monitor system temperatures,
    voltages and currents. Through the I2C serial interface,
    the device can be configured to measure many combinations of internal temperature, remote temperature,
    remote voltage, remote current and internal VCC. The
    internal 10ppm/°C reference minimizes the number of
    supporting components and area required. Selectable
    address and configurable functionality give the LTC2990
    flexibility to be incorporated in various systems needing
    temperature, voltage or current data. The LTC2990 fits
    well in systems needing sub-millivolt voltage resolution,
    1% current measurement and 1°C temperature accuracy
    or any combination of the three. nn Applications ...

Prices

Packaging

Parametrics

LTC2990CMS#PBFLTC2990CMS#TRPBFLTC2990IMS#PBFLTC2990IMS#TRPBF
ADC14-Bit14-Bit14-Bit14-Bit
Number of Channels2222
Demo BoardsDC1338BDC1338BDC1338BDC1338B
Design ToolsLinduino FileLinduino FileLinduino FileLinduino File
Export Controlnononono
External Temp Sense Accuracy, °C1.51.51.51.5
I/OSerial I2CSerial I2CSerial I2CSerial I2C
Internal Temp Sense Accuracy, °C3333
Isupply, mA1.11.11.11.1
MonitorsExternal V, External I, External Temperature, Internal Vs, Internal TemperatureExternal V, External I, External Temperature, Internal Vs, Internal TemperatureExternal V, External I, External Temperature, Internal Vs, Internal TemperatureExternal V, External I, External Temperature, Internal Vs, Internal Temperature
Operating Temperature Range, °C0 to 700 to 70-40 to 85-40 to 85
OutputDigitalDigitalDigitalDigital
Sensor TypeDiode, InternalDiode, InternalDiode, InternalDiode, Internal
Supply Voltage Range2.9V to 5.5V2.9V to 5.5V2.9V to 5.5V2.9V to 5.5V

Eco Plan

LTC2990CMS#PBFLTC2990CMS#TRPBFLTC2990IMS#PBFLTC2990IMS#TRPBF
RoHSCompliantCompliantCompliantCompliant

Articles

  • Download » Articles - LT Journal, PDF, 1.1 Mb, 01-18-2011
    I2C System Monitor Combines Temperature, Voltage and Current Measurements for Single-IC System Monitoring
    Docket ↓
    I2C System Monitor Combines Temperature, Voltage and
    Current Measurements for Single-IC System Monitoring
    David Schneider LTC2990 Features Measures Voltage, Current and Temperature Measures Two Remote Diode Temperatures ±1ºC Accuracy, 0.06ºC Resolution ±2ºC Internal Temperature 15-Bit ADC Measures Voltage and Current 3V to 5.5V Supply Operating Voltage I2C Serial Interface with Four
    Selectable Addresses Internal 10ppm Voltage Reference 10-Lead MSOP Package 22 | January 2011 : LT Journal of Analog Innovation 1.0 380
    100µA
    10µA 0.8 ∆VD
    0.6 0.4
    100 200 300 RSERIES = 0Ω
    RSERIES = 30Ω 360
    DIODE TEMPERATURE (K) DIODE VOLTAGE (V) The limit on the complexity
    of large integrated circuits
    is dominated by how much
    power they can dissipate.
    The trend in µprocessors
    and FPGAs is toward
    packing more features into
    smaller ICs, run at ever-lower
    voltages. The resulting rise
    in power dissipation makes
    it increasingly difficult to
    monitor and control sources
    of heat. Where it was once
    suitable to have a single ...
  • Download » Articles - LT Journal, PDF, 261 Kb, 04-19-2017
    Making Accurate Temperature Measurements with Devices with Different Ideality Factors
    Docket ↓
    Making Accurate Temperature Measurements with Devices
    with Different Ideality Factors
    Hamza Salman Afzal and Shuilin Tian The ability to accurately measure temperature is critical
    to the reliable operation of power systems. Accurate
    temperature data can reveal the instantaneous health of a
    system, and enable real-time protection functions such as
    thermal shutdown. For instance, significant rates of change
    in temperature can indicate increased power consumption.
    If a proper temperature feedback loop is implemented, this
    information can be used to reduce power consumption
    before temperatures escalate to dangerous levels.
    Perhaps the least expensive and most
    ubiquitous temperature sensor is a diode.
    A silicon p-n junction has a forward
    drop of approximately 700mV and a
    temperature coefficient of -2.2mV/C
    at room temperature. This sensitivity
    to temperature is exploited in many
    systems as a means of measuring
    temperature by simply biasing the diode
    with a constant current and measuring
    the resulting voltage (see Figure 1)
    This method has achieved wide acceptance ...

Moldel Line

Series: LTC2990 (4)

Manufacturer's Classification

  • Signal Conditioning > Amplifiers > Current Sense Amplifiers
  • Monitor, Control and Protection > Power Monitors
  • Monitor, Control and Protection > Temperature Monitors > Digital Temperature Measurement Systems

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