ADM6318CZ28ARJZ-R7

Supervisors Overview

The ADM6318CZ28ARJZ-R7 is a supervisory circuit from Analog Devices designed to monitor power supply voltage levels and code execution integrity in microprocessor-based systems. It features a fixed reset threshold voltage of 2.8 V with an accuracy of 2.5%. The device provides a push-pull active low reset output and includes a watchdog timer for system protection. It operates within a supply voltage range up to 5.5 V, consumes 20 µA of quiescent current, and offers a reset delay time of 200 ms. The component is housed in a compact SOT-23-5 package and is specified for operation across the industrial temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrated watchdog timer monitors code execution integrity and resets the processor if strobing fails within a preset timeout period.
• Provides reliable power-on reset signals by monitoring supply voltage against a precise internal reference threshold.
• Features a push-pull active low reset output stage capable of driving loads directly without external pull-up resistors.

Supervisors Applications

• Microprocessor systems requiring code execution monitoring
• Controllers and intelligent instruments needing voltage supervision
• Portable equipment with limited power budgets

Supervisors Procurement Notes

Verify the specific suffix CZ28ARJZ-R7 against the manufacturer's official datasheet to confirm the 2.8 V threshold and push-pull output configuration. Ensure the ordering information matches the exact package type and environmental specifications required for your design. Cross-reference the part number with Analog Devices documentation to validate availability and revision status before finalizing procurement.

Supervisors Selection Notes

Select this component when a fixed 2.8 V threshold is required alongside integrated watchdog functionality. The push-pull output simplifies interface design compared to open-drain alternatives. Consider the 20 µA quiescent current for battery-operated applications. Verify that the 200 ms reset delay meets the timing requirements of the target microprocessor or logic family.

Supervisors Part Context

This part belongs to the ADM631x series of supervisory circuits, which share common architectural features such as low power consumption and industrial temperature ratings. Variants within the series differ primarily in reset threshold voltages, output stage configurations (push-pull vs. open-drain), and the presence of manual reset inputs. The ADM6318 specifically combines watchdog capabilities with a push-pull output.

Supervisors Replacement Considerations

Substitutes must match the 2.8 V threshold, push-pull output, and SOT-23-5 package. Check for equivalent watchdog timeout options and reset delay times. Verify that alternative parts support the same supply voltage range and operating temperature specifications.