LTC2990IMS#TRPBF

Thermal Management Overview

The LTC2990IMS#TRPBF is a quad I2C voltage, current, and temperature monitor housed in a 10-lead MSOP package. It operates on a supply voltage range of 3V to 5.5V with an input supply current of 1.8mA during conversion. The device features four selectable I2C addresses and includes an internal 10ppm/°C voltage reference. It provides ±0.5°C accuracy for remote diode temperatures and utilizes a 14-bit ADC for voltage and current measurements.

Thermal Management Feature Summary

• Monitors system voltages, currents, and temperatures via a single I2C serial interface
• Measures two remote diode temperatures with high precision using internal bias circuitry
• Includes an internal low-drift voltage reference to minimize external component requirements
• Supports configurable measurement combinations including internal, remote, and supply parameters

Thermal Management Applications

• Temperature total unadjusted error monitoring
• Supply voltage monitoring
• Current measurement via sense resistors
• Remote data acquisition systems
• Environmental monitoring

Thermal Management Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the IMS designation corresponds to the industrial temperature range of –40°C to 85°C. Ensure the I2C address pins are configured correctly for the target bus topology. Check for RoHS compliance documentation as specified by the manufacturer.

Thermal Management Selection Notes

Select this component for applications requiring simultaneous multi-parameter monitoring with minimal external parts. The internal reference reduces board space compared to discrete solutions. Consider the 14-bit resolution for voltage and current sensing needs. Verify that the remote sensor ideality factor matches the factory calibration or allows for software compensation.

Thermal Management Part Context

This part belongs to the Analog Devices LTC2990 family of quad monitors. It is designed for systems needing sub-millivolt voltage resolution and precise thermal management. The device integrates multiple sensing capabilities into a compact package, simplifying design for embedded controllers and industrial equipment.

Thermal Management Replacement Considerations

LTC2990CMS#TRPBF (Commercial Temperature Range)

Thermal Management FAQ

How does the LTC2990 handle remote diode sensors with non-standard ideality factors?

The device is factory calibrated for an ideality factor of 1.004. For other factors, the measured Kelvin or Celsius temperature can be scaled using simple fixed-point math equations provided in the datasheet to compensate for the deviation.

What is the maximum differential input voltage allowed?

The maximum differential voltage between V1–V2 or V3–V4 is limited to ±300mV. Exceeding this range may affect measurement accuracy or damage the input stage.