Analog Devices Inc./Maxim Integrated MAX40004ANS02+T

Overview

MAX40004ANS02+T from Analog Devices is a nanoPower, noninverting-input comparator with integrated 0.2V factory-trimmed reference voltage, push-pull output, 500nA supply current, and operation from 1.7V to 5.5V - deployed in ultra-compact 0.73mm × 0.73mm 4-bump WLP for battery-critical portable electronics such as medical wearables and IoT sensor nodes.

For engineers reviewing the MAX40004ANS02+T datasheet, MAX40004ANS02+T pinout, MAX40004ANS02+T application, or MAX40004ANS02+T equivalent, key selection considerations include its 0.2V internal reference accuracy (±12mV over –40°C to +125°C), 9µs propagation delay at 100mV overdrive, input voltage range extending to 5.5V independent of supply, and high-impedance inputs during power-down.

Technical Context

The MAX40004ANS02+T implements a BiCMOS input stage enabling rail-to-rail input operation up to 5.5V even when VCC = 0V, and maintains >1GΩ input impedance in powered-down state. Its internal 0.2V reference is temperature-compensated and laser-trimmed at wafer test.

This device uses a push-pull output stage capable of sourcing 1mA (VOH ≥ VCC – 0.4V) and sinking 2mA (VOL ≤ 0.4V), eliminating external pull-up components. It features 8mV typical internal hysteresis for noise immunity and operates across the full automotive temperature range (–40°C to +125°C).

Key Specifications

Pinout & Package

MAX40004ANS02+T is packaged in a 0.73mm × 0.73mm, 4-bump wafer-level package (WLP) with 0.35mm pitch. The package has no exposed thermal pad and is RoHS-compliant (+ suffix). Land pattern follows AN1891 guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3691IDCKR and MAX40014ANS02+T, MAX40004ANS02+T uniquely combines 0.2V precision reference, push-pull output, and 0.73mm WLP in one device - minimizing component count and PCB area while delivering deterministic timing in ultra-low-power systems.

Availability

MAX40004ANS02+T is available at Aetrix Electronics and suitable for portable medical devices, automotive cabin sensors, and IoT edge nodes requiring stable component supply with guaranteed long-term availability and automotive-grade qualification.

Supply support for MAX40004ANS02+T 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 portable electronics - delivering nanoPower operation, integrated references, and miniature packaging without sacrificing performance or temperature robustness.

FAQ

What is the internal reference voltage tolerance of MAX40004ANS02+T over temperature?

The MAX40004ANS02+T features a factory-trimmed 0.2V internal reference with ±12mV (±6%) tolerance over the full –40°C to +125°C operating range, as specified in the Electrical Characteristics table (page 4 of the datasheet). This tolerance includes initial trim error and temperature drift, ensuring reliable threshold detection without external calibration. The MAX40004ANS02+T reference remains stable even during supply transients due to on-chip filtering.

Does MAX40004ANS02+T require an external pull-up resistor on the output?

No, MAX40004ANS02+T does not require an external pull-up resistor because it features a push-pull output stage capable of both sourcing and sinking current. The output can drive CMOS or TTL logic inputs directly, delivering VOH ≥ VCC – 0.4V (at 1mA) and VOL ≤ 0.4V (at 2mA). This eliminates BOM cost and layout area associated with pull-up resistors - a key advantage of MAX40004ANS02+T over open-drain comparators like MAX40014ANS02+T.

Can the input of MAX40004ANS02+T be biased above the VCC supply voltage?

Yes, the input of MAX40004ANS02+T can be biased up to 5.5V even when VCC is as low as 1.7V or 0V, thanks to its innovative BiCMOS input stage with no ESD diode clamp to VCC. This allows direct sensing of higher-voltage signals (e.g., 3.3V sensor outputs) in low-voltage systems without attenuation networks. Absolute maximum rating for IN is –0.3V to +6V, and the MAX40004ANS02+T maintains high input impedance (>1GΩ) even during power-down.

What is the propagation delay of MAX40004ANS02+T at 20mV overdrive?

At 20mV overdrive, the MAX40004ANS02+T exhibits a propagation delay of 50µs (low-to-high) and 45µs (high-to-low), as measured under standard conditions (VCC = 3.3V, CL = 20pF, TA = –40°C to +125°C). This delay increases slightly at lower overdrive levels but remains deterministic and well-characterized across temperature and supply voltage. The MAX40004ANS02+T datasheet provides full delay vs. overdrive curves on page 5 (toc07).

Is MAX40004ANS02+T pin-compatible with other devices in the MAX4000x family?

MAX40004ANS02+T shares the same 4-bump WLP pinout (A1=OUT, A2=IN, B1=VCC/REF, B2=GND) with all MAX4000xANS variants, including MAX40002ANS02+T and MAX40005ANS02+T. However, functional compatibility depends on output type and input polarity: MAX40004ANS02+T has push-pull/noninverting behavior, whereas MAX40002ANS02+T is open-drain/noninverting and MAX40005ANS02+T is push-pull/inverting. Swapping them requires circuit validation.