ADT7518ARQZ-REEL

Thermal Management Overview

The ADT7518ARQZ-REEL is a board-mount temperature sensor IC from Analog Devices, housed in a 16-lead QSOP package. It integrates a 10-bit temperature-to-digital converter, a 10-bit 4-channel ADC, and four 8-bit buffered voltage output DACs. The device operates on a single supply ranging from 2.7 V to 5.5 V with a typical power-down current of 1 µA. It supports SPI, I2C, QSPI, MICROWIRE, and DSP-compatible serial interfaces. The internal temperature sensor offers an accuracy of ±0.5°C at room temperature.

Thermal Management Feature Summary

• Integrates a quad 8-bit DAC with buffered rail-to-rail outputs and simultaneous update capability via LDAC function.
• Includes a 10-bit 4-channel ADC for monitoring analog inputs and a 10-bit temperature-to-digital converter.
• Features dual serial interface options compatible with SPI, I2C, QSPI, MICROWIRE, and DSP standards.
• Incorporates a power-on reset circuit ensuring DAC outputs initialize to 0 V upon startup.

Thermal Management Applications

• Portable battery-powered instruments
• Personal computers
• Smart battery chargers
• Telecommunications systems
• Domestic appliances

Thermal Management Procurement Notes

Verify the specific ordering suffix REEL7 against the manufacturer's official documentation to confirm packaging details. Ensure compatibility with system voltage requirements within the 2.7 V to 5.5 V range. Confirm that the 16-lead QSOP package dimensions align with the PCB footprint design. Check for any recommended design updates, as newer alternatives may be suggested by the manufacturer.

Thermal Management Selection Notes

Select this component when a combined solution for temperature monitoring, analog input acquisition, and multi-channel voltage generation is required. Consider the device if low standby current is critical for battery-operated applications. Evaluate the need for simultaneous DAC updates and the specific serial protocol constraints of the host system before finalizing the design.

Thermal Management Part Context

This part belongs to the ADT751x family of mixed-signal sensors. It is designed to replace older discrete solutions by consolidating sensing and conversion functions into a single integrated circuit. The datasheet recommends using the ADT7519 for new designs due to improved specifications regarding internal reference usage.

Thermal Management Replacement Considerations

Public confirmed substitute: ADT7519ARQZ.

Thermal Management FAQ

What is the maximum operating temperature of the ADT7518?

The ADT7518 operates within a temperature range of –40°C to +120°C.

How does the ADT7518 handle DAC output initialization?

The device incorporates a power-on reset circuit that ensures all DAC outputs power up to 0 V and remain there until a valid write operation occurs.