AD8561ARUZ-REEL

Overview

The AD8561ARUZ-REEL is a single ultrafast comparator from Analog Devices, packaged in an 8-lead Thin Shrink Small Outline Package (TSSOP) and supplied in reel format. It features a typical propagation delay of 7 ns at 5 V supply voltage. The device supports single supply operation ranging from 3 V to 10 V, as well as dual supply configurations. Key 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 operates within an industrial temperature range of –40°C to +85°C.

Feature Summary

• Features a 7 ns propagation delay with closely matched rising and falling signal delays for accurate clock recovery applications.
• Includes a latch function with defined setup and hold times to retain output data states independently of input signals.
• Supports wide common-mode input ranges extending to the negative supply rail, compatible with PNP differential input stages.

Applications

• High Speed Timing
• Clock Recovery and Clock Distribution
• Line Receivers
• Digital Communications
• Phase Detectors

Procurement Notes

Verify that the specific ordering suffix matches the required package type and tape-and-reel quantity configuration. Confirm RoHS compliance status if environmental regulations apply to the manufacturing process. Ensure the component meets the specified industrial temperature range requirements for the intended operational environment before finalizing procurement orders.

Selection Notes

Select this component when a fast response time with low power consumption is required compared to legacy designs. Consider the TSSOP package dimensions for surface-mount layout constraints. Evaluate the input bias current characteristics against source impedance limitations to maintain optimal high-speed performance without excessive delay degradation.

Part Context

This part belongs to the AD8561 family of ultrafast comparators designed for high-speed digital applications. It serves as a direct pin-compatible upgrade for LT1016 designs, offering improved speed and lower power consumption while maintaining similar form factors. The family includes various package options such as DIP and SOIC to accommodate different board space and mounting requirements.

Replacement Considerations

The AD8561 is a pin-compatible replacement for the LT1016. Designers must account for differences in input voltage range, input bias current direction, and output swing characteristics during the transition to ensure proper circuit functionality.

FAQ

How does the AD8561 compare to the LT1016 regarding power consumption?

The AD8561 consumes significantly less current, typically around 5 mA, compared to the LT1016 which typically draws 25 mA.

What is the purpose of the LATCH pin on the AD8561?

The LATCH pin allows the user to retain the current output state regardless of subsequent changes in the input voltages, functioning as a data retention control.