AD8561AN

Overview

The AD8561AN is a single ultrafast comparator in an 8-lead plastic DIP package. It features a typical propagation delay of 7 ns at 5 V supply, with a maximum of 9.8 ns over the industrial temperature range of –40°C to +85°C. The device supports single supply operation from 3 V to 10 V or dual supplies of ±5 V. Key electrical parameters include a typical input offset voltage of 2.3 mV (max 7 mV), input bias current of –3 μA, and low power consumption with a typical positive supply current of 4.5 mA.

Feature Summary

• Features closely matched rising and falling signal propagation delays that track over temperature, maintaining output duty cycle matching for clock recovery applications.
• Includes a latch function with defined setup and hold times to retain data at the output regardless of subsequent input changes.
• Offers a wide common-mode input voltage range extending from the negative supply rail to within 2.2 V of the positive supply rail.

Applications

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

Procurement Notes

Verify the specific suffix 'AN' corresponds to the 8-lead Plastic Dual In-Line Package (N-8) as listed in the manufacturer's ordering guide. Confirm RoHS compliance status by checking for the 'Z' suffix variant if required, as standard parts may differ. Ensure the operating environment remains within the specified –40°C to +85°C industrial temperature range to maintain guaranteed electrical performance specifications.

Selection Notes

Select this component when pin compatibility with LT1016 designs is required alongside improved speed and lower power consumption. Consider the wider common-mode input range compared to legacy comparators. Evaluate source resistance limits below 1 kΩ to prevent input lag that could degrade the 7 ns propagation delay capability. Verify output loading constraints do not exceed twenty TTL gates or 100 Ω resistance.

Part Context

The AD8561 series serves as a direct upgrade for LT1016 designs, offering faster response times and reduced supply current while maintaining identical pin configurations. It belongs to Analog Devices' family of ultrafast single-supply comparators designed for precision timing and signal processing tasks where rapid switching and low latency are critical system requirements.

Replacement Considerations

The AD8561ANZ is the RoHS-compliant equivalent of the AD8561AN. Both share identical pinouts and electrical characteristics, allowing for direct substitution in existing PCB layouts without circuit modification.