LTC1392IS8#TRPBF

Thermal Management Overview

The LTC1392IS8#TRPBF is a micropower data acquisition system in an 8-lead SOIC package. It integrates a temperature sensor, power supply monitor, and a 10-bit successive approximation ADC with rail-to-rail differential voltage inputs. The device operates on a single 4.5V to 6V supply. Supply current is 0.2μA when idle and 700μA during sampling at maximum rate. Temperature accuracy is ±2°C at room temperature and ±4°C over the –40°C to 85°C range.

Thermal Management Feature Summary

• Integrates onboard ambient temperature sensing and system power supply monitoring capabilities
• Features a 10-bit resolution analog-to-digital converter with rail-to-rail common-mode differential voltage input
• Utilizes a synchronous half-duplex serial interface for efficient data transfer to microprocessors

Thermal Management Applications

• Temperature measurement
• Power supply measurement
• Current measurement using external sense resistors
• Remote data acquisition systems
• Environment monitoring

Thermal Management Procurement Notes

Verify the specific suffix IS8 corresponds to the industrial temperature grade (-40°C to 85°C) and the narrow SOIC package configuration. Confirm that the #TRPBF designation indicates tape and reel packaging suitable for automated surface-mount assembly processes. Ensure compatibility with the required 4.5V to 6V single supply voltage range for the target application design.

Thermal Management Selection Notes

Select this component for applications requiring simultaneous monitoring of temperature, supply voltage, and differential signals within a compact footprint. The low idle current makes it suitable for battery-powered or energy-constrained environments. Consider the thermal coupling effects if attaching directly to heat-generating surfaces, as self-heating can impact temperature measurement accuracy at high sampling rates.

Thermal Management Part Context

This part belongs to the LTC1392 family of micropower data acquisition systems. It is designed to replace discrete solutions by combining sensing, conversion, and interface logic into a single integrated circuit. The industrial grade variant ensures reliable operation across extended environmental conditions compared to commercial grades.

Thermal Management Replacement Considerations

LTC1392CN8

Thermal Management FAQ

How is the measured temperature calculated from the digital output?

The temperature in degrees Celsius is calculated using the formula: Output Code divided by 4, minus 130.

What is the method for measuring current with this device?

Current measurement is performed by connecting an external sense resistor between the +VIN and -VIN pins and measuring the resulting differential voltage drop.

Does the device support both MSB-first and LSB-first data formats?

Yes, the MSBF bit in the input word configures the DOUT pin to transmit data in either MSB-first format or MSB-first followed by LSB-first sequence.