AD8469WBRMZ-RL

Overview

The AD8469WBRMZ-RL is a single-channel, rail-to-rail analog comparator from Analog Devices Inc., designed for high-speed applications. It operates on a single supply voltage ranging from 2.5 V to 5.5 V and features TTL/CMOS-compatible outputs. The device includes a shutdown pin and programmable hysteresis control via the HYS pin. Key electrical specifications include a typical propagation delay of 40 ns, an input offset voltage of ±3 mV, and a supply current of 550 µA at 2.5 V. It is qualified for automotive applications under AEC-Q100 standards and operates within a temperature range of -40°C to +125°C.

Feature Summary

• Features fully specified rail-to-rail input common-mode voltage range extending beyond the supply rails.
• Includes a dedicated shutdown pin for low-power sleep mode operation with defined wake-up times.
• Offers programmable hysteresis through an external resistor or current source connected to the HYS pin.
• Provides robust protection against large input overdrive without phase reversal.

Applications

• High speed instrumentation
• Clock and data signal restoration
• Logic level shifting or translation
• Threshold detection
• Pulse-width modulators

Procurement Notes

Verify the specific suffix 'W' indicates automotive qualification and 'RL' denotes reel packaging when sourcing. Confirm RoHS compliance status as indicated in the ordering guide. Ensure the component matches the exact part number AD8469WBRMZ-RL to guarantee the correct package type and temperature rating. Cross-reference with official Analog Devices documentation for any updates to specifications or availability.

Selection Notes

Select this component for designs requiring fast response times with low power consumption. The rail-to-rail input capability simplifies interface design with various signal sources. The integrated hysteresis control reduces external component count compared to standard comparators. Consider the 8-lead MSOP package constraints for PCB layout and thermal management requirements.

Part Context

This part belongs to the AD8469 series of fast, low-power comparators. The 'W' prefix signifies that the device meets automotive quality standards. It is manufactured using Analog Devices' proprietary XFCB2 process. The device is functionally similar to other single-channel comparators but distinguishes itself with its specific rail-to-rail input range and programmable hysteresis feature set.

Replacement Considerations

Direct substitutes may include the AD8469ARZ or AD8469ARMZ for commercial grade applications. Verify pin compatibility and electrical specifications before substitution. Automotive-grade replacements must also carry the 'W' designation to ensure reliability standards are met.

FAQ

How is hysteresis programmed on the AD8469?

Hysteresis is controlled by connecting an external pull-down resistor or current source from the HYS pin to ground. Leaving the pin disconnected removes hysteresis.

What is the input common-mode voltage range?

The input common-mode voltage range extends from VEE − 0.2 V to VCC + 0.2 V, allowing for full rail-to-rail operation.

Does the device support automotive applications?

Yes, the AD8469W models are qualified for automotive applications and are available with controlled manufacturing to support automotive quality and reliability requirements.