AD8469WBRMZ

Overview

The AD8469WBRMZ is a fast, rail-to-rail, low-power single-supply comparator from Analog Devices. It operates within a voltage range of 2.5 V to 5.5 V and features a TTL/CMOS-compatible output stage. The device includes a shutdown pin for power management and programmable hysteresis via the HYS pin. It offers a typical propagation delay of 40 ns with a 15 pF load and maintains low power consumption at 1.4 mW under 2.5 V conditions. Qualified for automotive applications, it functions reliably across an extended temperature range.

Feature Summary

• Features fully specified rail-to-rail input common-mode voltage capability extending beyond supply rails.
• Includes a dedicated shutdown pin to minimize power consumption during inactive periods.
• Provides programmable hysteresis control through an external resistor or current source on the HYS pin.
• Delivers a low-glitch TTL- and CMOS-compatible output stage capable of driving standard logic loads.

Applications

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

Procurement Notes

Verify that the specific part number suffix matches the required package and qualification grade. Confirm the automotive qualification status if intended for vehicle electronics. Ensure the ordering code aligns with the desired tube or reel packaging format. Cross-reference the manufacturer's latest datasheet revision to validate all electrical specifications before finalizing procurement decisions.

Selection Notes

Select this component when high-speed switching with minimal propagation delay dispersion is required. Consider its rail-to-rail input capability for applications involving signals near ground or supply rails. Evaluate the programmable hysteresis feature for noisy environments requiring stable threshold detection. Verify that the single-channel architecture fits the system design constraints.

Part Context

This device belongs to the AD8469 series of comparators manufactured by Analog Devices. It utilizes the proprietary XFCB2 process technology to achieve high speed and low power consumption simultaneously. The WBRMZ designation indicates an automotive-qualified version housed in an 8-lead MSOP package. It serves as a versatile solution for precision timing and signal conditioning tasks.

Replacement Considerations

Check for direct functional equivalents within the same family, such as the commercial AD8469 variant. Verify compatibility regarding package dimensions and pinout configurations. Ensure that alternative components meet the specific automotive qualification requirements if applicable.

FAQ

How is hysteresis controlled in the AD8469WBRMZ?

Hysteresis is programmed 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 a shutdown mode?

Yes, the SDN pin allows the device to be shut down. Driving this pin low guarantees shutdown, reducing supply current significantly.