ADT14GP

Overview

The ADT14GP is a quad setpoint programmable temperature monitor and controller manufactured by Analog Devices Inc. It integrates a bandgap voltage reference with four matched comparators to generate an output voltage proportional to temperature. The device provides a temperature-stable 2.5 V reference and a voltage proportional to absolute temperature (VPTAT) with a precise coefficient of 5 mV/K. Four open-collector outputs signal when the VPTAT output exceeds user-defined thresholds established via external resistive dividers.

Feature Summary

• Integrates a bandgap voltage reference providing a stable 2.5 V output and a VPTAT signal with a 5 mV/K temperature coefficient.
• Contains four matched comparators that detect when the temperature-dependent voltage exceeds externally programmed trip points.
• Features four open-collector setpoint outputs capable of sourcing up to 5 mA for driving control signals.

Applications

• Power supply monitor and control systems
• Multiple fan controller systems
• Workstation thermal management systems

Procurement Notes

Verify the specific suffix 'GP' against official Analog Devices documentation to confirm package type, lead-free status, and tape-and-reel specifications. Ensure the selected variant matches the required operating temperature range and pinout configuration for the target PCB layout. Cross-reference the datasheet revision to confirm compatibility with existing design parameters.

Selection Notes

Select this component when a multi-channel thermal monitoring solution is required without the complexity of a digital interface. The ADT14GP utilizes resistor-programmable setpoints, allowing flexible threshold adjustment. Consider the 600 mA maximum quiescent current at +5 V and the open-collector output structure when designing the pull-up networks and power supply rails for the application.

Part Context

The ADT14 belongs to a family of analog temperature controllers designed for industrial and commercial thermal management. Unlike digital sensors requiring microcontroller interaction, this part operates as a standalone comparator-based monitor. It serves as a direct replacement for older discrete comparator and reference circuits in applications requiring multiple independent thermal trip points.

Replacement Considerations

Check for pin-compatible alternatives within the ADI portfolio if different package styles are needed. Verify that substitute parts maintain the 5 mV/K VPTAT scale factor and 2.5 V reference accuracy to ensure existing resistor divider calculations remain valid without circuit redesign.