MAX9034ASD

Overview

The MAX9034ASD+ is a quad comparator in a 14-pin SO package. It operates from +2.5V to +5.5V single supply or ±1.25V to ±2.75V dual supplies. Supply current is 35µA per channel, with a maximum of 55µA. Propagation delay is 188ns typical and 228ns maximum. Input offset voltage is ±1mV typical at 5V. Built-in hysteresis is 4mV. CMRR and PSRR are typically 100dB. Operating temperature range is -40°C to +125°C.

Feature Summary

• Quad comparator configuration optimized for low-power portable applications
• Rail-to-rail output stage reduces switching current and eliminates power-supply glitches
• Internal 4mV hysteresis provides noise immunity against slow-moving input signals
• No phase reversal occurs for overdriven inputs

Applications

• Battery-powered systems
• Portable consumer electronics
• Mobile communications devices
• Sensor signal detection circuits
• Threshold detectors and discriminators

Procurement Notes

Verify the specific suffix 'SD' corresponds to the 14-pin SOIC package variant rather than TSSOP. Confirm RoHS compliance status matches the '+' designation. Ensure the operating environment falls within the specified -40°C to +125°C temperature range. Check that supply voltages remain strictly between 2.5V and 5.5V to prevent damage.

Selection Notes

Select this component when four independent comparators are required in a compact surface-mount footprint. The rail-to-rail output capability simplifies interfacing with digital logic without level shifting. The low quiescent current makes it suitable for battery-operated designs where power conservation is critical compared to higher-speed alternatives.

Part Context

This device belongs to the MAX903x family of ultra-small, low-cost comparators manufactured by Maxim Integrated, now part of Analog Devices Inc. The family includes single (MAX9030), dual (MAX9032), and quad (MAX9034) variants. The MAX9034 specifically integrates four channels into a single 14-pin package, offering a space-saving solution for multi-channel sensing applications.

Replacement Considerations

Direct pin-compatible replacements include other quad comparators from the same MAX903x series if different packaging is acceptable. Verify that any substitute maintains the 2.5V minimum supply voltage and similar propagation delay characteristics for timing-sensitive applications.