LTC6752HUD-3#PBF

Overview

The Analog Devices LTC6752HUD-3#PBF is a high-speed analog comparator featuring rail-to-rail inputs and CMOS outputs. It supports toggle rates up to 280MHz with a propagation delay of 2.9ns and rise/fall times of 1.2ns. The device operates on an input supply (VCC) from 2.45V to 5.25V and an output supply (VDD) from 1.71V to 3.5V, allowing direct interfacing with 1.8V logic. Key electrical characteristics include an input offset voltage of ±1.2mV, quiescent current of 4.5mA, and output short-circuit currents of ±22mA. It is housed in a 12-lead QFN package and specified for operation from -40°C to +125°C.

Feature Summary

• Features separate input and output supply rails to accommodate different logic voltage levels.
• Includes a shutdown pin for power reduction and a latch/hysteresis control pin.
• Provides complementary outputs for flexible signal processing.
• Supports rail-to-rail input common mode range extending beyond both supply rails.

Applications

• Clock and data recovery circuits
• High-speed line receivers
• Time of flight measurements
• Window comparators

Procurement Notes

Verify the specific suffix 'HUD-3' confirms the extended temperature range (-40°C to +125°C), separate supplies, and QFN packaging. Confirm RoHS compliance and lead-free finish status via the manufacturer's ordering information. Ensure the application design accounts for the exposed pad connection requirements of the QFN-12 package for proper thermal and electrical grounding.

Selection Notes

Select this component when high toggle rates and low jitter are critical. The separate VCC and VDD supplies allow optimization of input sensitivity and output drive strength independently. Compare against other family members if shutdown or latching features are not required, or if a smaller package like SC-70 is preferred. Ensure the input common mode voltage stays within the guaranteed rail-to-rail limits.

Part Context

This part belongs to the LTC6752 family of ultra-fast comparators designed for demanding timing applications. The family offers various configurations including single supply, separate supply, and different package options. The HUD-3 variant specifically targets industrial environments requiring wide temperature stability and high-speed performance with complementary outputs.

Replacement Considerations

LTC6752IUD-3#PBF serves as a commercial grade alternative with identical electrical specifications but a limited operating temperature range of -40°C to +85°C.