Analog Devices Inc./Maxim Integrated MAX40003ANS02+

Overview

MAX40003ANS02+ from Analog Devices is a nanoPower, inverting-input comparator with factory-trimmed 0.2V internal reference, open-drain output, and ultra-low 500nA supply current. It operates from 1.7V to 5.5V, supports input voltages from 0.1V to 5.5V (independent of supply), and is rated for -40°C to +125°C automotive temperature range. It is used in battery-critical signal-threshold detection circuits such as low-voltage battery monitoring in portable medical devices.

For engineers reviewing the MAX40003ANS02+ datasheet, MAX40003ANS02+ pinout, MAX40003ANS02+ application, or MAX40003ANS02+ equivalent, key selection considerations include its inverting configuration, 0.2V internal reference accuracy (±12mV at +25°C), 9µs propagation delay under 100mV overdrive, open-drain output requiring external pullup, and 0.73mm × 0.73mm WLP package footprint.

Technical Context

The MAX40003ANS02+ implements an inverting-input comparator architecture with a precision, temperature-compensated 0.2V internal reference. Its input stage maintains high impedance even when VCC/REF = 0V, enabling robust power-gating schemes in ultra-low-power systems.

It features 8mV typical internal hysteresis for noise immunity and RF filtering to suppress EMI-induced false triggering. The open-drain output allows level-shifting across voltage domains up to 5.5V, while its 500nA quiescent current enables continuous monitoring in energy-constrained applications without compromising battery life.

Key Specifications

Pinout & Package

MAX40003ANS02+ uses a 4-bump wafer-level package (WLP) with 0.73mm × 0.73mm footprint and 0.35mm pitch. The package has no exposed pad and is RoHS-compliant (+ suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3604DSGR and MAX40013ANS09+, the MAX40003ANS02+ uniquely delivers inverting logic, 0.2V factory-trimmed reference, and WLP packaging in one die - making it optimal for ultra-low-voltage, space-limited battery monitoring where minimal BOM count and guaranteed threshold accuracy are critical.

Availability

MAX40003ANS02+ is available at Aetrix Electronics and suitable for portable medical devices, battery-powered instrumentation, and automotive body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX40003ANS02+ 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 semiconductors, serving industrial, automotive, communications, and healthcare markets.

The MAX4000x family was designed specifically for ultra-low-power, space-constrained threshold detection in portable and battery-operated systems - prioritizing nanoPower consumption, miniature packaging, and integrated precision references.

FAQ

What is the internal reference voltage tolerance of MAX40003ANS02+ over temperature?

The MAX40003ANS02+ features a factory-trimmed 0.2V internal reference with ±26mV total variation over the full -40°C to +125°C range. At +25°C, tolerance is ±12mV (188mV to 212mV); at temperature extremes, it widens to 174mV to 226mV. This ensures reliable low-voltage detection without external calibration.

Does MAX40003ANS02+ require an external pullup resistor on the OUT pin?

Yes, MAX40003ANS02+ has an open-drain output and requires an external pullup resistor to establish a valid high logic level. A 100kΩ resistor to 3.3V is typical, but values from 10kΩ to 1MΩ are usable depending on rise time and bus capacitance requirements. The device itself does not provide internal pullup.

Can MAX40003ANS02+ operate with input voltages below its supply voltage?

Yes, MAX40003ANS02+ supports input voltages from 0.1V to 5.5V independently of VCC/REF. This means it can accurately compare sub-1V sensor signals (e.g., thermistor outputs) even when powered from 1.8V or 3.3V - eliminating need for input scaling amplifiers in many low-voltage sensing applications.

What is the maximum sink current capability of the MAX40003ANS02+ output?

The MAX40003ANS02+ output can sink up to 2mA while maintaining VOL ≤ 0.4V at VCC = 1.8V (TA = -40°C). At higher temperatures or lower supplies, sink capability decreases slightly - e.g., 1.5mA at 125°C. For driving LEDs or logic inputs, verify load current stays within this limit to ensure proper low-state voltage.

Is the MAX40003ANS02+ pin-compatible with other devices in the MAX4000x family?

Yes, all MAX4000x WLP variants (e.g., MAX40002ANS02+, MAX40003ANS05+, MAX40004ANS12+) share identical 4-bump WLP pinout (A1=OUT, A2=IN, B1=VCC/REF, B2=GND). This enables drop-in replacement across reference voltages and input polarities without PCB redesign - provided the application logic accommodates inverting vs. noninverting behavior.