ADM693SQ

Supervisors Overview

The ADM693SQ is a microprocessor supervisory circuit manufactured by Analog Devices Inc., designed for reliable system monitoring in industrial and commercial environments. It operates within a supply voltage range of 4.5 V to 5.5 V, featuring a typical threshold voltage of 4.4 V with specific under-voltage and over-voltage detection levels at 4.25 V and 4.48 V respectively. The device incorporates a watchdog timer and battery backup switch functionality, providing an open-drain output with a reset delay time of 200 ms. It consumes 1.95 mA of operating current and dissipates up to 600 mW of power. The component is housed in a SOIC-16 package, supports surface-mount installation, and functions reliably across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrates watchdog timer and battery backup switch capabilities for comprehensive system protection
• Provides open-drain output signaling for direct interface with digital logic systems
• Features chip enable signal control for flexible power management and operational states

Supervisors Applications

• Microprocessor reset circuits requiring precise voltage supervision
• Industrial control systems needing watchdog timer functionality
• Embedded applications utilizing battery backup switching mechanisms

Supervisors Procurement Notes

Verify the exact suffix designation when sourcing, as package variations exist between standard plastic and ceramic options. Confirm RoHS compliance status through official documentation, as historical data indicates potential non-compliance for certain variants. Ensure the selected part matches the required pinout and thermal characteristics for the target PCB layout. Cross-reference the manufacturer's latest datasheet to confirm availability and any design changes that may affect integration into existing systems.

Supervisors Selection Notes

Select this component when a single-input voltage supervisor with integrated watchdog and backup features is required. Consider the 200 ms reset delay and open-drain output type for compatibility with downstream logic. Evaluate the 1.95 mA quiescent current against system power budgets. Verify that the SOIC-16 package fits the available board space and manufacturing constraints. Compare against similar ADM693 variants if different thresholds or packages are needed.

Supervisors Part Context

The ADM693SQ belongs to the ADM693A series of microprocessor supervisory circuits from Analog Devices. This family provides essential voltage monitoring and system reset functions for digital electronics. The SQ suffix typically denotes a specific package variant, often ceramic, distinguishing it from plastic versions like the ARZ. These devices are categorized under Power Management ICs (PMIC) and Supervisory Circuits, serving critical roles in ensuring stable operation of complex electronic systems.

Supervisors Replacement Considerations

Direct substitutes include other ADM693 series variants such as ADM693ARZ for plastic packaging alternatives. Check for functional equivalence regarding threshold voltages and reset delays before swapping. Verify package compatibility if transitioning between ceramic and plastic housings. Consult Analog Devices for updated cross-reference lists to ensure no loss of watchdog or backup switch functionality.