Analog Devices Inc./Maxim Integrated MAX9005EUA+T

Overview

MAX9005EUA+T from Maxim Integrated is a low-power, high-speed, single-supply analog IC integrating a decompensated operational amplifier (AV ≥10V/V, GBW = 8MHz), a 185ns comparator with ±2mV internal hysteresis, and no internal voltage reference. It operates from +2.5V to +5.5V, draws 340µA quiescent current, and delivers rail-to-rail outputs capable of ±2.5mA (op amp) and ±4.0mA (comparator). It is used in photodiode preamps, zero-crossing detectors, and sensor signal conditioning where compact integration and fast response are critical.

For engineers reviewing the MAX9005EUA+T datasheet, MAX9005EUA+T pinout, MAX9005EUA+T application, or MAX9005EUA+T equivalent, this page provides verified functional identity, validated 8-pin µMAX package mapping, confirmed pin roles (including externally accessible CIN−), exact gain-bandwidth and propagation delay specs, and two technically documented alternative parts for design flexibility.

Technical Context

The MAX9005EUA+T implements a decompensated op amp optimized for closed-loop gains ≥10V/V, achieving 8MHz gain-bandwidth and 6.0V/µs slew rate - enabling high-speed signal amplification without stability compromise. Its comparator features bipolar input stage with 150mV–(VDD−1.1V) common-mode range and proprietary output stage that minimizes supply glitches during transitions.

No internal reference is present; the inverting comparator input (CIN−) is fully exposed for external threshold configuration. Input bias currents are ≤±2nA (op amp) and ≤80nA (comparator), supporting high-impedance sensor interfaces. Rail-to-rail output swing is maintained across −40°C to +85°C with <100mV drop at ±2.5mA load.

Key Specifications

Pinout & Package

MAX9005EUA+T is housed in an 8-pin µMAX package (3mm × 3mm, 0.8mm height), thermally enhanced with exposed pad, rated for −40°C to +85°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX9002EUA+, MAX9005EUA+T offers identical functionality and footprint - confirming it as a direct variant within the same production family; versus TLV2304IDR, MAX9005EUA+T reduces BOM count by 3+ components and improves timing accuracy by 35ns while cutting quiescent current by 38%.

Availability

MAX9005EUA+T is available at Aetrix Electronics and suitable for photodiode preamplifiers, zero-crossing detectors, and sensor signal detection systems requiring stable component supply, long-term manufacturability, and guaranteed RoHS-compliant sourcing.

Supply support for MAX9005EUA+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

Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.

The MAX9000–MAX9005 family was engineered to integrate op amp, comparator, and reference functions into minimal-area packages for space-constrained portable and sensor-interface systems.

FAQ

What is the maximum closed-loop gain supported by the op amp in MAX9005EUA+T?

The op amp in MAX9005EUA+T is decompensated and stable only for closed-loop gains ≥10V/V. Attempting unity-gain or gains below 10V/V will cause instability and oscillation. This is confirmed in the "Selector Guide" and "Detailed Description" sections of the official datasheet, which explicitly assign MAX9005 to the "AV ≥10V/V, GBW = 8MHz" category.

Does MAX9005EUA+T include an internal voltage reference?

No, MAX9005EUA+T does not include an internal voltage reference. The "Selector Guide" table clearly states "No" under the REF column for MAX9005, and the "Detailed Description" confirms that MAX9002/MAX9005 lack the internal reference but expose CIN− externally. This distinguishes MAX9005EUA+T from MAX9000/MAX9001/MAX9003/MAX9004.

What is the purpose of Pin 5 (CIN−) on MAX9005EUA+T?

Pin 5 (CIN−) on MAX9005EUA+T is the externally accessible inverting input of the comparator. Unlike MAX9000/MAX9003 (where CIN− is internally tied to REF), MAX9005EUA+T exposes this pin to allow user-defined threshold voltages via resistive dividers, DACs, or other reference sources - enabling flexible window-comparator or adjustable-level detection topologies.

Can MAX9005EUA+T operate from a 3.3V supply?

Yes, MAX9005EUA+T is fully specified to operate from +2.5V to +5.5V, including standard 3.3V rails. Electrical characteristics tables confirm parameters such as supply current (340µA), input offset voltage (±2mV), and output swing are guaranteed across this full range, making it suitable for 3.3V embedded systems without level translation.

Is the MAX9005EUA+T pin-compatible with MAX9002EUA+?

Yes, MAX9005EUA+T is pin-compatible with MAX9002EUA+. Both are 8-pin µMAX devices with identical pin assignments (VDD, AIN−, AIN+, VSS, CIN−, CIN+, COUT, AOUT) and share identical electrical specifications, thermal ratings, and functional block definitions per Maxim's official "Selector Guide" and datasheet revision history.