Datasheet LTC2990 (Analog Devices)

LTC2990 Quad I2C Voltage, Current and Temperature Monitor
FEATURES DESCRIPTION
n
Measures Voltage, Current and Temperature
The LTC®2990 is used to monitor system temperatures, n
Measures Two Remote Diode Temperatures
voltages and currents. Through the I2C serial interface, n
±0.5°C Accuracy, 0.06°C Resolution (Typ)
the device can be configured to measure many combi- n
±1°C Internal Temperature Sensor (Typ)
nations of internal temperature, remote temperature, n 14-Bit ADC Measures Voltage/Current remote voltage, remote current and internal VCC. The n 3V to 5.5V Supply Operating Voltage internal 10ppm/°C reference minimizes the number of n Four Selectable Addresses supporting components and area required. Selectable n Internal 10ppm/°C Voltage Reference address and configurable functionality give the LTC2990 n 10-Lead MSOP Package flexibility to be incorporated in various systems needing temperature, voltage or current data. The LTC2990 fits
APPLICATIONS
well in systems needing sub-millivolt voltage resolution, 1% current measurement and 1°C temperature accuracy n Temperature Measurement or any combination of the three. n Supply Voltage Monitoring All registered trademarks and trademarks are the property of their respective owners. n Current Measurement n Remote Data Acquisition n Environmental Monitoring
TYPICAL APPLICATION Voltage, Current, Temperature Monitor Temperature Total Unadjusted Error
RSENSE 1.0 2.5V 5V ILOAD 0.5 VCC V1 V2 TREMOTE SDA V3 SCL LTC2990 0 T ADR0 REMOTE TUE (°C) ADR1 V4 GND 2990 TA01a –0.5 TINTERNAL –1.0 MEASURES: TWO SUPPLY VOLTAGES, –50 –25 0 25 50 75 100 125 SUPPLY CURRENT, INTERNAL AND REMOTE TEMPERATURES TAMB (°C) 2990 TA01b Rev. F Document Feedback For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Pin Functions Functional Diagram Timing Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts