ADT7518ARQZ-REEL7

Thermal Management Overview

The ADT7518ARQZ-REEL7 is a mixed-signal integrated circuit combining a 10-bit temperature-to-digital converter, a 10-bit 4-channel ADC, and four 8-bit voltage-output DACs. It operates on a single supply from 2.7 V to 5.5 V with a typical power-down current of 1 µA. The device features an internal band gap sensor with ±0.5°C accuracy at room temperature and supports external transistor monitoring. It includes a buffered reference input and simultaneous output updates via the LDAC function.

Thermal Management Feature Summary

• Integrates four buffered voltage-output DACs with guaranteed monotonicity and simultaneous update capability.
• Includes a 10-bit 4-channel ADC with DC input bandwidth for analog signal digitization.
• Features a 10-bit temperature-to-digital converter supporting both internal and external sensing.
• Supports multiple serial interface standards including SPI, I2C, QSPI, MICROWIRE, and DSP.

Thermal Management Applications

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

Thermal Management Procurement Notes

Verify that the specific ordering suffix matches the required packaging configuration. Confirm that the design utilizes the ADT7519 for new implementations as recommended by the manufacturer due to superior internal reference specifications. Ensure the system architecture accommodates the 16-lead QSOP package dimensions and thermal requirements.

Thermal Management Selection Notes

Select this component when a combined solution for temperature monitoring, analog input acquisition, and multi-channel voltage generation is required. The device is suitable for designs needing low standby current and flexible digital interface compatibility. Consider the ADT7519 for new projects to avoid limitations associated with the internal reference usage found in this revision.

Thermal Management Part Context

This part belongs to the ADT751x family of mixed-signal sensors manufactured by Analog Devices. It serves as a consolidated solution for applications requiring thermal management alongside analog signal conditioning and generation. The device replaces older discrete solutions by integrating conversion and control functions into a single 16-lead QSOP package.

Thermal Management Replacement Considerations

The ADT7519 is the recommended replacement for new designs. It resolves limitations regarding internal reference usage for temperature accuracy specifications present in the ADT7518.

Thermal Management FAQ

What is the maximum input voltage range for the ADC channels?

The ADC input voltage range is 0 V to 2.25 V or 0 V to VDD, depending on the control configuration.

How are the DAC outputs updated simultaneously?

All DAC outputs can be updated simultaneously using the software LDAC function or the external LDAC pin.

Does the device support I2C communication?

Yes, the ADT7518 supports a 2-wire SMBus/I2C interface in addition to SPI-compatible modes.