MAX9034ASD+

Overview

The MAX9034ASD+ is a quad comparator from the MAX9030/MAX9031/MAX9032/MAX9034 family, manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single supply voltage ranging from +2.5V to +5.5V or dual supplies of ±1.25V to ±2.75V. The device features four independent comparators with rail-to-rail push-pull outputs and an internal hysteresis of 4mV. Key electrical parameters include a typical propagation delay of 188ns, a maximum input offset voltage of 1mV at 5V, and a supply current of 35µA per comparator. It is housed in a 14-SOIC package and supports an operating temperature range of -40°C to +125°C.

Feature Summary

• Quad configuration providing four independent comparator channels within a single integrated circuit.
• Rail-to-rail output stage that swings fully to the supply rails, eliminating the need for external pull-up resistors.
• Internal 4mV hysteresis designed to provide noise immunity and prevent output oscillations during slow-moving input transitions.
• Input common-mode range extends from the negative supply rail to within 1.1V of the positive supply.

Applications

• Battery-powered portable systems
• Mobile communications devices
• Sensor signal detection circuits
• Photodiode preamplifier interfaces
• Digital line receivers

Procurement Notes

Verify the specific ordering suffix 'SD+' confirms the 14-pin SOIC package and lead-free/RoHS compliance status as indicated by the '+' designation. Ensure the component matches the standard commercial temperature range (-40°C to +125°C) required for the application. Cross-reference the manufacturer part number with authorized distributors to confirm authenticity and traceability.

Selection Notes

Select this component when a low-cost, ultra-small quad comparator solution is required for space-constrained designs. It is suitable for applications needing rail-to-rail output swing without external components. Consider alternative packages like TSSOP if a thinner profile is necessary, or other family members if shutdown functionality or fewer channels are preferred.

Part Context

The MAX9034ASD+ belongs to the MAX903x series of low-cost, single/dual/quad comparators optimized for portable applications. This series emphasizes low power consumption and small footprint. The MAX9034 specifically provides four channels, distinguishing it from the single (MAX9030/MAX9031) and dual (MAX9032) variants in the same family.

Replacement Considerations

Direct functional substitutes within the same package include the MAX9034AUD+ (14-TSSOP). Other family members like MAX9032ASA+ offer similar performance but with only two channels. Verify pin compatibility and electrical specifications before substituting with non-family parts.