AD8561AR-REEL7

Overview

The AD8561AR-REEL7 is an ultrafast single-supply comparator from Analog Devices, packaged in an 8-lead narrow SOIC (R-8) format. 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, or dual supplies up to ±5 V. The device includes a low-power latch function with a typical pulse width of 6 ns. Electrical specifications include a maximum input offset voltage of 7 mV, a common-mode rejection ratio of 85 dB, and a power supply rejection ratio of 65 dB. It supports complementary digital outputs and functions within an industrial temperature range of –40°C to +85°C.

Feature Summary

• Features a 7 ns propagation delay for high-speed timing applications
• Includes a dedicated latch function for data retention
• Supports single or dual power supply configurations
• Provides complementary digital output stages

Applications

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

Procurement Notes

Verify the specific package type matches the design requirements, as the AD8561 series is available in multiple formats including plastic DIP, TSSOP, and narrow SOIC. Confirm that the RoHS compliant suffix 'Z' is required for environmental compliance. Ensure the reel quantity aligns with manufacturing needs. Cross-reference the datasheet revision history to confirm the document version matches the component specifications used during the initial circuit design phase.

Selection Notes

Select this component when a fast response time is critical for signal processing tasks. The wide common-mode input range extending to the negative rail allows flexibility in interfacing with various signal sources. Consider the latch feature if holding the comparison result is necessary before subsequent logic processing. Evaluate the power consumption against system constraints, noting the typical supply current varies based on the operating voltage and temperature conditions specified in the electrical characteristics table.

Part Context

This part belongs to the AD8561 family of ultrafast comparators designed by Analog Devices. It serves as a direct pin-compatible upgrade for the LT1016, offering improved speed and lower power consumption while maintaining similar functionality. The family includes variants with different packaging options to suit both through-hole and surface-mount assembly processes. It is engineered for industrial environments requiring reliable performance across a broad temperature spectrum.

Replacement Considerations

The AD8561 is a pin-compatible replacement for the LT1016. Designers should account for differences in input voltage range, bias current direction, and output swing when migrating existing designs. Verify that the faster propagation delay does not introduce timing issues in the original application architecture.