AD8612ARU-REEL

Overview

The AD8612ARU-REEL is a dual-channel, ultrafast comparator from Analog Devices Inc., housed in a 14-lead TSSOP surface-mount package. It operates on a single supply voltage ranging from 3 V to 5 V and features a typical propagation delay of 4 ns at 5 V, with a maximum of 5.5 ns. The device includes a latch function that retains output states when the LATCH pin is asserted high, provided the supply voltage exceeds 4.3 V. It offers complementary outputs capable of sourcing or sinking up to 10 mA each. The input common-mode range extends down to the negative supply rail, and it supports input frequencies up to 100 MHz.

Feature Summary

• Features a 4 ns propagation delay with closely matched rising and falling signal delays for accurate clock recovery applications.
• Includes an integrated latch function that maintains the output state upon assertion, provided the supply voltage is above 4.3 V.
• Provides complementary digital outputs capable of driving loads directly without external pull-up resistors.
• Supports a wide common-mode input voltage range extending to the negative supply rail.

Applications

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

Procurement Notes

Verify the specific suffix 'RU' corresponds to the 14-lead TSSOP package and '-REEL' indicates tape-and-reel packaging configuration. Confirm the datasheet revision matches the required specifications, as parameters such as input bias current and offset voltage drift may vary between revisions. Ensure the operating environment stays within the specified -40°C to +85°C industrial temperature range for guaranteed performance.

Selection Notes

Select this component when a dual-channel solution is required for high-speed comparison tasks. It serves as a direct upgrade for LT1394 and LT1016 designs, offering lower power consumption and wider input common-mode ranges. Consider the 4 ns delay and latch functionality for applications requiring precise timing recovery or noise immunity through state retention.

Part Context

This part belongs to the AD8611/AD8612 family of ultrafast comparators. While the AD8611 provides a single channel in 8-lead packages, the AD8612 integrates two channels into a compact 14-lead TSSOP footprint. Both share identical electrical characteristics, including the 4 ns propagation delay and latch capabilities, making them suitable for space-constrained high-speed digital applications.

Replacement Considerations

The AD8611 is pin-compatible with the LT1016 and LT1394 but offers improved propagation delay and lower supply current. When replacing these legacy parts, verify that the input common-mode voltage range and output drive requirements are compatible with the new design constraints.