Analog Devices Inc./Maxim Integrated MAX4486ASA+

Overview

MAX4486ASA+ 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, ±7.0mV max input offset voltage (–40°C to +125°C), rail-to-rail output swing within 50mV of rails into 2kΩ, and stability with up to 100pF capacitive loads - deployed in electronic ignition modules and infrared receivers.

For engineers reviewing the MAX4486ASA+ datasheet, MAX4486ASA+ pinout, MAX4486ASA+ application, or MAX4486ASA+ equivalent, this page delivers verified package mapping (SO-8), thermal performance (471mW @ TA = +70°C), supply current (2.2–3.5mA per amplifier), noise density (29nV/√Hz), and settling time (450ns to 0.01%) - all confirmed for the exact MAX4486ASA+ variant.

Technical Context

The MAX4486ASA+ implements a CMOS input stage with ground-sensing inputs and a rail-to-rail output stage capable of sourcing 27mA/sinking 33mA while maintaining phase margin ≥55° and gain margin ≥12dB at unity gain. Its architecture supports stable operation with capacitive loads up to 100pF without external compensation.

It operates across –40°C to +125°C with guaranteed CMRR ≥62dB and PSRR ≥64dB over full temperature range, and features no phase reversal under overdriven input conditions - critical for zero-crossing detection and sensor signal conditioning in harsh environments.

Key Specifications

Pinout & Package

The MAX4486ASA+ is housed in an 8-pin SO (Small Outline) package with standard JEDEC MS-012AC footprint, 1.27mm pitch, and 4.9mm × 6.0mm body size. Thermal resistance θJA = 170°C/W; derating 5.88mW/°C above +70°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMV358IDR and MCP6022-I/SN, the MAX4486ASA+ uniquely combines 7MHz bandwidth, rail-to-rail output, and full –40°C to +125°C operation in an SO-8 package - making it the only option qualified for high-reliability automotive and industrial sensing where thermal robustness and speed coexist.

Availability

MAX4486ASA+ is available at Aetrix Electronics and suitable for electronic ignition modules, infrared receivers for remote controls, portable communicators, single-supply zero-crossing detectors, and sensor signal detection requiring stable component supply across extended temperature ranges.

Supply support for MAX4486ASA+ 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 high-reliability semiconductor solutions for industrial, automotive, and communications markets.

The MAX4484/MAX4486/MAX4487 family targets cost-sensitive, space-constrained applications needing rail-to-rail performance and extended temperature operation - specifically engineered for portable, automotive, and industrial signal conditioning where single-supply simplicity and thermal resilience are mandatory.

FAQ

What is the maximum capacitive load the MAX4486ASA+ can drive without oscillation?

The MAX4486ASA+ is unity-gain stable with capacitive loads up to 100pF, as verified in the datasheet's Electrical Characteristics table and Typical Operating Characteristics (Figure 2). This eliminates need for output isolation resistors in typical ADC input or filter capacitor applications. Exceeding 100pF requires external compensation per Figure 3 in the MAX4486ASA+ datasheet.

Does the MAX4486ASA+ support true ground-referenced input signals?

Yes - the MAX4486ASA+ features ground-sensing inputs with a common-mode voltage range extending to VSS (0V), allowing direct connection to grounded sensors, resistive dividers, or single-ended sources without level-shifting circuitry. This capability is explicitly specified in the Input Common-Mode Voltage Range parameter (VSS to VDD − 1.4V).

What is the guaranteed input offset voltage specification for MAX4486ASA+ over its full operating temperature range?

The MAX4486ASA+ has a guaranteed maximum input offset voltage of ±7.0mV across the full –40°C to +125°C operating temperature range, as stated in the Electrical Characteristics table under "TA = –40°C to +125°C". This value includes drift and is not limited to room-temperature testing.

Can the MAX4486ASA+ be used in a single-supply zero-crossing detector without external level-shifting components?

Yes - the MAX4486ASA+'s ground-sensing inputs and rail-to-rail output allow direct implementation of a single-supply zero-crossing detector using only passive resistors and optional hysteresis feedback. No level-shifting or charge-pump circuitry is needed, as confirmed by its inclusion in the official Applications list and detailed in the Applications Information section.

What is the thermal performance of the MAX4486ASA+ in its SO-8 package?

The MAX4486ASA+ in SO-8 package has a maximum continuous power dissipation of 471mW at TA = +70°C, with derating at 5.88mW/°C above that temperature. Its junction-to-ambient thermal resistance (θJA) is 170°C/W, and absolute maximum junction temperature is +150°C - enabling reliable operation in high-ambient industrial environments when properly heatsinked or airflow-cooled.