Analog Devices Inc./Maxim Integrated MAX9032AUA

Overview

MAX9032AUA from Maxim Integrated is a dual, rail-to-rail output comparator optimized for single-supply operation from +2.5V to +5.5V, featuring 188ns propagation delay, 35μA supply current per comparator, 4mV internal hysteresis, and operation across -40°C to +125°C - used in portable sensor signal detection and battery-powered threshold monitoring.

For engineers reviewing the MAX9032AUA datasheet, MAX9032AUA pinout, MAX9032AUA application, or MAX9032AUA equivalent, this page delivers verified package mapping (8-pin μMAX), confirmed dual-comparator functionality, real-world timing and power specs, and validated alternative options for low-power, space-constrained designs.

Technical Context

The MAX9032AUA integrates two independent comparators sharing common VDD and VSS rails, with input common-mode range extending from VSS to VDD – 1.1V and no phase reversal under overdriven inputs. Its output stage minimizes switching current transients to suppress supply glitches.

Each comparator provides rail-to-rail output swing, 4mV built-in hysteresis for noise immunity, and operates without external biasing - enabling direct interfacing with ADCs, microcontrollers, and digital logic across its full temperature and voltage range.

Key Specifications

Pinout & Package

The MAX9032AUA is housed in an 8-pin μMAX® package (package code U8+1), measuring 3.0mm × 3.0mm × 0.8mm with exposed pad for thermal enhancement and RoHS-compliant lead-free finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-comparator applications.

Compared with LMV393IDR and TLV3702IDR, the MAX9032AUA uniquely balances ultra-low 35μA current, 188ns speed, and factory-trimmed 4mV hysteresis in a 3×3mm μMAX package - making it optimal for space- and power-constrained dual-threshold detection where reliability trumps lowest possible I_DD.

Availability

MAX9032AUA is available at Aetrix Electronics and suitable for battery-powered threshold detection, photodiode signal discrimination, and sensor overvoltage protection requiring stable component supply across automotive, industrial, and medical device production cycles.

Supply support for MAX9032AUA includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated, now part of Analog Devices, designs precision analog and mixed-signal ICs for power, sensing, and connectivity in harsh, space-constrained environments.

The MAX903x family targets ultra-low-power, single-supply comparator applications in portable and battery-operated systems - emphasizing small footprint, wide voltage range, and robust noise immunity without external components.

FAQ

What is the maximum capacitive load the MAX9032AUA can drive without oscillation?

The MAX9032AUA is specified to drive up to 150pF without sustained oscillations, as confirmed in the Electrical Characteristics table. This value reflects the design's stability margin with typical PCB trace capacitance and small external filters. Driving loads beyond 150pF may require series output resistance or careful layout to maintain phase margin. The MAX9032AUA's low 35μA supply current and internal compensation make it inherently robust against moderate capacitive loading in portable sensor nodes.

Does the MAX9032AUA support dual-supply operation?

Yes, the MAX9032AUA supports dual-supply operation from ±1.25V to ±2.75V, as stated in the Detailed Description section. This mode extends its utility in legacy industrial systems with split-rail supplies. However, all specifications - including propagation delay, supply current, and hysteresis - are guaranteed for single-supply operation from +2.5V to +5.5V. When using dual supplies, ensure both rails remain within absolute maximum ratings (±0.3V to ±6V), and verify common-mode range compliance relative to each rail. The MAX9032AUA maintains rail-to-rail output swing regardless of supply configuration.

What is the input offset voltage specification for the MAX9032AUA over temperature?

The MAX9032AUA has a guaranteed input offset voltage of ±5mV over the full -40°C to +125°C range, with ±1mV typical at +25°C and ±1µV/°C temperature coefficient. This is explicitly listed in the Electrical Characteristics table under "Input Offset Voltage" and "Input Offset Voltage Temperature Coefficient." These values apply to both comparators in the MAX9032AUA die and are measured with hysteresis disabled via test methodology. For precision threshold applications, the 4mV internal hysteresis dominates over offset drift, making calibration unnecessary in most portable detection circuits.

Can the MAX9032AUA be used with a 1.8V supply?

No, the MAX9032AUA is not rated for 1.8V operation. Its guaranteed single-supply operating range is +2.5V to +5.5V, as specified in both the General Description and Electrical Characteristics tables. At 1.8V, the internal circuitry fails to bias correctly, resulting in undefined output states, increased propagation delay, and potential phase reversal. For 1.8V systems, consider alternatives like the TLV3702 or MAX9062, which are characterized down to 1.6V or 1.7V. The MAX9032AUA's minimum 2.5V requirement ensures reliable rail-to-rail output swing and 4mV hysteresis performance across temperature.

Is the μMAX package of the MAX9032AUA pin-compatible with standard SO-8 or SOT23-8 footprints?

No, the μMAX package of the MAX9032AUA is not pin-compatible with SO-8 or SOT23-8. It uses a proprietary 8-pin µMAX outline (package code U8+1, outline no. 21-0036) with 0.65mm pitch and 3.0mm × 3.0mm body - distinct from SO-8 (150mil width, 1.27mm pitch) and SOT23-8 (3.0mm × 1.75mm, different pin 1 location). The pin functions match the SO-8 variant (MAX9032ASA+) electrically, but physical layout requires dedicated land pattern 90-0092. Using SO-8 or SOT23-8 footprints will result in misalignment, solder bridging, or open connections. Always refer to Maxim's official land pattern for MAX9032AUA.