Analog Devices Inc./Maxim Integrated MAX4486AKA+

Overview

MAX4486AKA+ from Maxim Integrated is a dual, rail-to-rail output operational amplifier optimized for single-supply operation from +2.7V to +5.5V, featuring 7MHz gain-bandwidth product, ±0.3mV typical input offset voltage, and stable operation with up to 100pF capacitive loads - used in portable communicators and infrared receivers where low-voltage precision amplification is required.

For engineers reviewing the MAX4486AKA+ datasheet, MAX4486AKA+ pinout, MAX4486AKA+ application, or MAX4486AKA+ equivalent, this page delivers verified electrical parameters, package-specific pin mapping, thermal performance across -40°C to +125°C, and real-world substitution guidance for dual op-amp selection in space-constrained industrial and consumer designs.

Technical Context

The MAX4486AKA+ implements a CMOS input stage with ground-sensing capability and rail-to-rail output swing, enabling full dynamic range utilization in single-supply systems. Its unity-gain stability and 55° phase margin ensure robust closed-loop behavior with 2kΩ loads and up to 100pF capacitive loading without external compensation.

It operates across an extended industrial temperature range (-40°C to +125°C) with guaranteed 62dB CMRR and 64dB PSRR at maximum temperature, while maintaining 20V/µs slew rate and 0.01% THD at 10kHz into 2kΩ - critical for sensor signal conditioning and zero-crossing detection circuits.

Key Specifications

Pinout & Package

The MAX4486AKA+ is housed in an 8-pin SOT23 package (package code U8-1), with exposed pad not electrically connected. This thermally enhanced surface-mount package supports high-density layouts and reflow-compatible assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual op-amp applications.

Compared with LMV358IDR and TSV912IDT, the MAX4486AKA+ uniquely combines 125°C operation, rail-to-rail output, ultra-low input bias current, and 7MHz bandwidth in an 8-pin SOT23 - making it the only option qualified for dual-channel signal conditioning in automotive ignition and industrial sensor modules requiring long-term reliability.

Availability

MAX4486AKA+ is available at Aetrix Electronics and suitable for portable communicators, electronic ignition modules, and sensor signal detection systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX4486AKA+ 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, automotive, communications, and computing applications.

The MAX4486AKA+ belongs to the MAX448x family of low-cost, single-supply rail-to-rail op amps engineered for high-accuracy signal conditioning in battery-powered and thermally demanding systems.

FAQ

What is the maximum capacitive load the MAX4486AKA+ can drive without instability?

The MAX4486AKA+ is unity-gain stable with capacitive loads up to 100pF, as confirmed in the Electrical Characteristics table and Typical Operating Characteristics (Figure 2). This specification applies across the full -40°C to +125°C temperature range and eliminates the need for series isolation resistors when driving ADC inputs or long PCB traces. Exceeding 100pF may cause overshoot or ringing, as shown in the percent overshoot vs. capacitive load plot (MAX4484 toc11).

Does the MAX4486AKA+ support true rail-to-rail input common-mode range?

No - the MAX4486AKA+ features ground-sensing inputs with a common-mode voltage range from VSS to VDD − 1.3V (at +25°C) or VDD − 1.4V (over temperature), meaning it accepts signals down to the negative rail but not up to the positive rail. Its rail-to-rail capability applies only to the output stage. This design enables accurate amplification of low-side current-sense signals and sensor outputs referenced to ground, while avoiding input stage saturation near VDD.

What is the typical supply current per amplifier in the MAX4486AKA+ at 2.7V and 5.0V?

At VDD = +2.7V, the MAX4486AKA+ draws 1.9mA per amplifier (typical); at VDD = +5.0V, it draws 2.2mA per amplifier (typical), per the Electrical Characteristics table (page 2). These values reflect quiescent current only and exclude output load current. The device maintains consistent current consumption across temperature, with less than 10% variation from -40°C to +125°C, supporting predictable battery-life estimation in portable designs.

Can the MAX4486AKA+ be used as a comparator?

Yes - the MAX4486AKA+ can be used as a comparator in non-critical applications due to its lack of phase reversal on overdriven inputs and fast 1µs power-on time. However, it lacks dedicated comparator features like internal hysteresis or open-drain output. For zero-crossing detection (a listed application), it is typically configured with external hysteresis to prevent chatter. Its 7MHz GBW and 20V/µs slew rate enable response times under 100ns for large-signal transitions, but propagation delay is not characterized in the datasheet.

What is the input offset voltage drift specification for the MAX4486AKA+?

The MAX4486AKA+ has a guaranteed input offset voltage drift of ±6µV/°C, as specified in the Electrical Characteristics table (page 3) under "Input Offset Voltage Drift". This low drift ensures minimal output error shift over temperature - for example, a 100°C ambient change introduces only ±0.6mV additional offset beyond the initial ±0.3mV (typ), preserving accuracy in uncalibrated industrial sensor interfaces without active compensation.