AD8561ARZ-REEL7

Overview

The AD8561ARZ-REEL7 is an ultrafast single-supply comparator from Analog Devices, housed in an 8-lead narrow SOIC (R-8) surface-mount package. It features a typical propagation delay of 7 ns at 5 V and operates on a single supply voltage ranging from 3 V to 10 V. The device includes separate input and output sections, allowing the input stage to be powered by ±5 V dual supplies or +5 V single supplies. Key electrical specifications include a maximum offset voltage of 7 mV, a common-mode rejection ratio of 85 dB, and a latch function with a setup time of 2 ns to 3 ns and a hold time of 3 ns. It is rated for industrial temperatures between –40°C and +85°C.

Feature Summary

• Features a fast 7 ns propagation delay with closely matched rising and falling signal delays that track over temperature.
• Includes a dedicated latch input pin to retain output data states independent of subsequent input changes.
• Supports flexible power configurations with separate analog supply pins for single or dual rail operation.
• Provides complementary digital outputs capable of driving standard logic loads directly.

Applications

• High speed timing circuits
• Clock recovery and clock distribution systems
• Line receivers and digital communications
• Phase detectors and high speed sampling

Procurement Notes

Verify the specific suffix 'REEL7' indicates tape-and-reel packaging when sourcing components. Confirm RoHS compliance status via the manufacturer's ordering guide. Ensure ESD precautions are strictly followed during handling due to the device's sensitivity. Cross-reference the datasheet revision history for any updates to absolute maximum ratings or thermal characteristics before finalizing procurement specifications.

Selection Notes

Select this component for applications requiring precise duty cycle preservation due to matched propagation delays. Consider the wider common-mode input range compared to legacy parts like the LT1016. Evaluate the need for the integrated latch feature to simplify external circuitry. Verify that the 8-lead narrow SOIC package dimensions fit the target PCB layout constraints.

Part Context

This part belongs to the AD8561 family of ultrafast comparators designed as direct upgrades for LT1016 designs. It maintains pin compatibility while offering improved speed and lower power consumption. The family includes various package options such as plastic DIP and TSSOP, catering to different manufacturing and assembly requirements across industrial electronic applications.

Replacement Considerations

The AD8561 serves as a pin-compatible replacement for the LT1016. Designers must account for differences in input voltage range, bias current direction, and output swing characteristics when migrating existing circuits to ensure proper functionality without schematic modifications.