Analog Devices Inc./Maxim Integrated MAX40005ANS05+T

Overview

The MAX40005ANS05+T from Analog Devices is a nanoPower, inverting-input, push-pull output comparator with factory-trimmed 0.5V internal reference voltage, operating from 1.7V to 5.5V supply and consuming only 500nA typical supply current. It features 8mV internal hysteresis, 0.1V to 5.5V input voltage range independent of supply, and high-impedance inputs even at VCC = 0V - ideal for battery-critical monitoring in portable medical sensors and low-voltage IoT edge nodes.

For engineers reviewing the MAX40005ANS05+T datasheet, MAX40005ANS05+T pinout, MAX40005ANS05+T application, or MAX40005ANS05+T equivalent, key selection criteria include its inverting logic polarity, 0.5V precision internal reference, ultra-low quiescent current across automotive temperature range (–40°C to +125°C), and compatibility with 0.73mm × 0.73mm WLP footprint for space-constrained PCBs.

Technical Context

The MAX40005ANS05+T implements an inverting-input comparator architecture where output asserts low when input exceeds the 0.5V internal reference (VREF-INT = 485–515mV at +25°C, ±37mV over –40°C to +125°C). Its push-pull output stage sources/sinks ≥1mA while maintaining VOL ≤ 0.4V (sinking 2mA) and VOH ≥ VCC – 0.4V (sourcing 1mA), eliminating external pull-up requirements.

Input-stage design enables rail-to-rail input operation beyond VCC (up to +6V absolute max), with <30nA input bias current (–40°C to +85°C) and 0.4pF input capacitance. Internal temperature-compensated reference delivers 45dB PSRR (external VREF mode) and supports adaptive threshold detection without external components.

Key Specifications

Pinout & Package

MAX40005ANS05+T is packaged in a 4-bump wafer-level package (WLP) with 0.73mm × 0.73mm footprint and 0.35mm pitch. The WLP uses bottom-side solder bumps for mounting; no leads or gull-wing terminations.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3691IDCKR, MAX40005ANS05+T provides matched inverting logic and precise 0.5V reference for direct replacement in threshold-detection circuits, while MAX40015ANS05+T offers identical electrical behavior in a manufacturable SOT23 variant - enabling flexible sourcing without functional compromise.

Availability

MAX40005ANS05+T is available at Aetrix Electronics and suitable for portable medical devices, battery-powered IoT sensors, and automotive cabin electronics requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX40005ANS05+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 since 1965.

The MAX4000x family was designed specifically for ultra-low-power, space-constrained portable electronics - delivering nanoPower operation, sub-millimeter packaging, and integrated precision references to eliminate discrete support components.

FAQ

What is the input polarity configuration of the MAX40005ANS05+T?

The MAX40005ANS05+T features an inverting input configuration: its output goes low when the input voltage exceeds the internal 0.5V reference voltage, and high when the input falls below that threshold. This behavior is confirmed in Table 1 and the Input-Stage Circuitry section of the datasheet, and applies consistently across the full –40°C to +125°C operating range.

Does the MAX40005ANS05+T require an external pull-up resistor on its output?

No, the MAX40005ANS05+T does not require an external pull-up resistor because it uses a push-pull output stage capable of both sourcing and sinking current. The datasheet specifies VOH ≥ VCC – 0.4V (sourcing 1mA) and VOL ≤ 0.4V (sinking 2mA), enabling direct interface to CMOS/TTL logic inputs without additional components.

What is the accuracy of the internal 0.5V reference voltage in the MAX40005ANS05+T over temperature?

The internal reference voltage of the MAX40005ANS05+T is specified as 485mV to 515mV at +25°C, and 463mV to 537mV over the full –40°C to +125°C range. This ±37mV total variation (±7.4% of nominal) is factory-trimmed and documented in the Electrical Characteristics table under "Switching Threshold Voltage" for MAX4000_ _ _ _05+.

Can the MAX40005ANS05+T operate with input voltages higher than its supply voltage?

Yes, the MAX40005ANS05+T supports input voltages up to +6V regardless of supply voltage (VCC/REF), as stated in the Absolute Maximum Ratings table. Its innovative input-stage architecture eliminates the ESD diode clamp found in conventional comparators, enabling safe interfacing with higher-voltage sensors or legacy analog signals without external attenuation.

What package type and dimensions does the MAX40005ANS05+T use?

The MAX40005ANS05+T uses a 4-bump wafer-level package (WLP) with a 0.73mm × 0.73mm footprint and 0.35mm bump pitch. Package outline drawing 21-100103 confirms mechanical dimensions, and land pattern recommendations are provided in Application Note AN1891 - critical for reliable reflow assembly in high-density portable PCBs.