AD8612ARUZ

Overview

The AD8612ARUZ is a dual ultrafast comparator manufactured by Analog Devices Inc. It operates on a single supply voltage ranging from 3 V to 5 V and features a propagation delay of 4 ns typical, with a maximum of 5.5 ns at 5 V. The device includes a latch function that is active when the supply voltage exceeds 4.3 V. It provides complementary outputs capable of sourcing or sinking up to 10 mA per channel. The input common-mode range extends down to the negative supply rail. The component is housed in a 14-lead TSSOP surface-mount package and is rated for an industrial operating temperature range of -40°C to +85°C.

Feature Summary

• Features a latch function to maintain output state independent of subsequent input changes, provided the supply voltage is above 4.3 V.
• Provides complementary digital outputs for each channel, allowing direct interfacing with various logic families without additional pull-up components.
• Offers closely matched propagation delays for rising and falling signals across the temperature range, ensuring duty cycle preservation.
• Supports a wide common-mode input voltage range that includes the negative supply rail, simplifying biasing requirements.

Applications

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

Procurement Notes

Verify the specific suffix ARUZ corresponds to the 14-lead TSSOP package configuration. Confirm the manufacturing date code and lot traceability against current Analog Devices quality standards. Ensure ESD precautions are observed during handling as the device is sensitive to electrostatic discharge. Check for RoHS compliance documentation if required by local regulations.

Selection Notes

Select this component when dual-channel comparison with latching capability is required in a compact surface-mount form factor. It serves as a drop-in replacement for LT1016 and LT1394 designs, offering lower power consumption and wider input common-mode range. Consider the 4.3 V minimum threshold for latch functionality when designing low-voltage systems.

Part Context

The AD8612 is the dual-channel version of the AD8611 single-channel comparator. Both belong to the AD861x family of ultrafast comparators designed for high-speed applications. While the AD8611 is available in 8-lead SOIC and MSOP packages, the AD8612 utilizes a 14-lead TSSOP package to accommodate the additional channels and latch inputs.

Replacement Considerations

The AD8611 is pin-compatible with LT1016 and LT1394 but requires verification of input voltage ranges and bias currents. No other direct cross-references are documented in the official datasheet.