LTC2990

1

Rev. F

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TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

and Temperature Monitor

The LTC®2990 is used to monitor system temperatures,

the device can be configured to measure many combi-

nations of internal temperature, remote temperature,

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.

Temperature Total Unadjusted Error

n

Temperature Measurement

n

Supply Voltage Monitoring

n

Current Measurement

n

Remote Data Acquisition

n

Environmental Monitoring

n

Measures Voltage, Current and Temperature

n

Measures Two Remote Diode Temperatures

n

±0.5°C Accuracy, 0.06°C Resolution (Typ)

n

±1°C Internal Temperature Sensor (Typ)

n

14-Bit ADC Measures Voltage/Current

n

3V to 5.5V Supply Operating Voltage

n

Four Selectable Addresses

n

Internal 10ppm/°C Voltage Reference

n

10-Lead MSOP Package

V1

LTC2990

2.5V

5V

GND

SDA

SCL

ADR0

ADR1

MEASURES: TWO SUPPLY VOLTAGES,

SUPPLY CURRENT, INTERNAL AND

REMOTE TEMPERATURES

V3

V4

V2

2990 TA01a

Voltage, Current, Temperature Monitor

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2990 TA01b

1.0

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–1.0

0.5

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