Analog Devices Inc./Maxim Integrated MAX9022ASA+

Overview

MAX9022ASA+ from Analog Devices is a dual, micropower, single-supply comparator optimized for portable and battery-powered systems. It delivers 3μs propagation delay, 2.8μA per comparator supply current, 4mV internal hysteresis, rail-to-rail output swing, and operation from 2.5V to 5.5V - enabling precise threshold detection in low-voltage sensor interfaces.

For engineers reviewing the MAX9022ASA+ datasheet, MAX9022ASA+ pinout, MAX9022ASA+ application, or MAX9022ASA+ equivalent, key selection criteria include ultra-low quiescent current across -40°C to +125°C, input common-mode range extending to VDD − 1.1V, no phase reversal under overdrive, and SO-8 package compatibility with standard PCB assembly processes.

Technical Context

The MAX9022ASA+ integrates two independent comparators sharing a common VDD and VSS, each featuring internally trimmed 4mV hysteresis to suppress noise-induced oscillations on slow-moving inputs. Its input stage supports common-mode voltages from VSS to VDD − 1.1V, and its output stage eliminates supply glitches via reduced switching current during transitions.

Designed for single-supply operation (2.5V–5.5V), it also functions with dual supplies (±1.25V to ±2.75V). Propagation delay remains stable at 3μs (typ) under 100mV overdrive and 15pF load, with rise/fall times of 20ns and power-on time of 150ns - supporting reliable timing-critical detection in photodiode preamps and digital line receivers.

Key Specifications

Pinout & Package

MAX9022ASA+ is housed in an 8-pin SO (Small Outline) package (JEDEC MS-012, 150 mil width), with gull-wing leads, RoHS-compliant matte tin plating, and 1.27mm pitch. The package supports reflow soldering per J-STD-020 and offers 471mW power dissipation at TA = +70°C (derated 5.88mW/°C above).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3602DR and LMV393IDR, MAX9022ASA+ uniquely balances ultra-low 2.8μA current, 3μs speed, and integrated 4mV hysteresis - making it optimal for space-constrained, long-life battery systems where component count and reliability are prioritized over raw speed.

Availability

MAX9022ASA+ is available at Aetrix Electronics and suitable for battery-powered portable systems, sensor-signal detection circuits, and photodiode preamp designs requiring stable component supply across automotive, industrial, and medical product lifecycles.

Supply support for MAX9022ASA+ 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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets since 1965.

The MAX902x family was designed specifically for micropower, single-supply sensing and threshold-detection applications - targeting portable instrumentation, wearables, and automotive subsystems where size, power, and reliability are non-negotiable.

FAQ

What is the maximum capacitive load the MAX9022ASA+ output can drive without oscillation?

The MAX9022ASA+ is specified to drive up to 150pF without sustained oscillations, as confirmed in the Absolute Maximum Ratings table. This value applies to both OUTA and OUTB under standard conditions (VDD = 5V, TA = +25°C). Exceeding 150pF may degrade propagation delay and increase settling time; for heavier loads, consider buffering with a dedicated driver stage. Always verify stability with actual board parasitics in final layout.

Does the MAX9022ASA+ support dual-supply operation, and what are the voltage limits?

Yes, the MAX9022ASA+ supports dual-supply operation with ±1.25V to ±2.75V rails, as stated in the Detailed Description section. In this configuration, VDD connects to the positive rail and VSS to the negative rail. Input common-mode range remains VSS to VDD − 1.1V, and all electrical specifications - including 2.8μA supply current and 3μs propagation delay - apply across the full dual-supply range and temperature span (-40°C to +125°C).

Is the 4mV hysteresis in MAX9022ASA+ user-adjustable or fixed?

The 4mV hysteresis in MAX9022ASA+ is fixed and internally trimmed - it cannot be disabled or modified. However, additional hysteresis can be added externally using positive feedback resistors, as detailed in the Applications Information section. The internal hysteresis ensures baseline noise immunity without external components, while external networks allow fine-tuning for specific signal slew rates or EMI environments.

What is the absolute maximum input voltage rating for IN+ and IN− pins of MAX9022ASA+?

The absolute maximum input voltage for IN+ and IN− pins is VSS − 0.3V to VDD + 0.3V, per the Absolute Maximum Ratings table. This means at VDD = 5.5V and VSS = 0V, inputs may safely range from -0.3V to +5.8V. Exceeding these limits risks permanent damage. Note that the functional common-mode range is narrower: VSS to VDD − 1.1V for guaranteed performance.

Can MAX9022ASA+ be used in automotive applications, and is it AEC-Q200 qualified?

MAX9022ASA+ is rated for -40°C to +125°C operating temperature and is widely deployed in automotive cabin modules, tire pressure monitors, and body control units. While it meets the temperature and reliability requirements of AEC-Q200, Analog Devices does not list it as formally AEC-Q200 certified in the published datasheet or product brief. For safety-critical automotive applications, consult Analog Devices' automotive qualification documentation or contact their automotive support team for formal qualification status.