ADT7518ARQ-REEL

Thermal Management Overview

The ADT7518ARQ-REEL is a temperature monitoring system 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 DACs with buffered voltage outputs. The device operates on a single supply from 2.7 V to 5.5 V. It supports SPI, I2C, QSPI, MICROWIRE, and DSP-compatible serial interfaces. The internal temperature sensor accuracy is typically ±0.5°C. The ADC input range is 0 V to 2.25 V. The DAC output range is 0 V to 2 V.

Thermal Management Feature Summary

• Integrates a 10-bit temperature-to-digital converter, a 10-bit 4-channel ADC, and four 8-bit DACs with rail-to-rail buffered outputs.
• Supports multiple serial interface standards including SPI, I2C, QSPI, MICROWIRE, and DSP-compatible modes.
• Features simultaneous update of all DAC outputs via the LDAC function or external pin.
• Includes power-on reset circuitry ensuring DAC outputs initialize to 0 V.

Thermal Management Applications

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

Thermal Management Procurement Notes

Verify the specific ordering suffix REEL7 against the manufacturer's current documentation to confirm packaging details. Confirm that the component meets RoHS compliance requirements for the intended market. Check for any recent product change notices regarding manufacturing sites or materials. Ensure the design accommodates the 16-lead QSOP package dimensions and thermal characteristics specified in the datasheet.

Thermal Management Selection Notes

Select this component when a combined solution for temperature sensing, analog input acquisition, and multi-channel voltage generation is required. The device is suitable for designs needing low standby current and flexible serial communication options. Note that the ADT7519 is recommended for new designs as it does not share the internal reference limitation affecting temperature accuracy found in the ADT7518.

Thermal Management Part Context

The ADT7518 belongs to the Analog Devices ADT75xx family of integrated temperature monitoring systems. This series combines digital temperature sensing capabilities with analog-to-digital conversion and digital-to-analog conversion functions. The ADT7518 specifically provides four DAC channels, distinguishing it from variants with fewer outputs or different resolution configurations within the same product line.

Thermal Management Replacement Considerations

Analog Devices recommends using the ADT7519 for new designs instead of the ADT7518. The ADT7519 resolves the limitation where internal and external temperature accuracy specifications are invalid when the internal reference is used by the on-chip DAC.