LTC1392IS8#PBF

Thermal Management Overview

The LTC1392IS8#PBF 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, drawing 0.2μA when idle and 700μA during sampling. It features a 3-wire half-duplex serial interface for communication with microprocessors.

Thermal Management Feature Summary

• Integrates onboard ambient temperature sensing with production-trimmed accuracy
• Includes a dedicated system power supply monitor circuit
• Features a 10-bit resolution analog-to-digital converter with rail-to-rail common-mode input range
• Supports low-power operation with minimal supply current consumption

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 8-lead plastic small outline package. Confirm the industrial grade designation ensures operation within the specified temperature range. Check datasheet notes regarding absolute maximum ratings and thermal resistance values for proper PCB layout and heat dissipation planning.

Thermal Management Selection Notes

Select this component for applications requiring simultaneous monitoring of temperature, supply voltage, and differential signals. Ensure the system operates within the 4.5V to 6V supply range. Consider the 10-bit resolution and full-scale input options when designing signal conditioning circuits for the differential voltage inputs.

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 and conversion functions into a single integrated circuit. The series supports various packaging options including PDIP and SOIC formats for different board space requirements.

Thermal Management Replacement Considerations

LTC1391IS#PBF

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 is measured by placing an external sense resistor between the +VIN and -VIN pins and measuring the resulting differential voltage across it.

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 or LSB-first sequence.