Analog Devices Inc./Maxim Integrated MAX4486ASA+T

Overview

The MAX4486ASA+T 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), and ability to drive 2kΩ loads with <30mV from rails at +5V. It is widely deployed in portable communicators and sensor signal detection circuits requiring low-power, high-accuracy amplification.

For engineers reviewing the MAX4486ASA+T datasheet, MAX4486ASA+T pinout, MAX4486ASA+T application, or MAX4486ASA+T equivalent, this page delivers verified electrical parameters, SO-8 package layout, temperature-stable performance across –40°C to +125°C, capacitive-load stability up to 100pF, and real-world design context for zero-crossing detection and ground-sensing front ends.

Technical Context

The MAX4486ASA+T implements a complementary input stage enabling ground-sensing operation (VCM down to VSS) and rail-to-rail output swing via Class AB output transistors. Its unity-gain stable architecture supports capacitive loads up to 100pF without external compensation.

Each amplifier channel features 85dB large-signal voltage gain (AVOL) into 2kΩ, 20V/µs slew rate, and 29nV/√Hz input voltage noise at 10kHz - characteristics validated over full industrial temperature range (–40°C to +125°C) and critical for precision analog signal conditioning in harsh environments.

Key Specifications

Pinout & Package

MAX4486ASA+T is housed in an 8-pin SO (Small Outline) package (package code S8-2), RoHS-compliant, with standard 1.27mm pitch and 5.0mm × 6.2mm footprint. Thermal resistance θ_JA = 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 TSV912IDT, the MAX4486ASA+T uniquely balances 7MHz bandwidth, –40°C to +125°C guaranteed operation, and 100pF capacitive-load stability in an industry-standard SO-8 package - making it optimal for automotive-grade sensor interfaces where thermal robustness and layout simplicity are critical.

Availability

MAX4486ASA+T is available at Aetrix Electronics and suitable for portable communicators, electronic ignition modules, infrared receivers for remote controls, and sensor signal detection applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX4486ASA+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, automotive, and communications markets, emphasizing ruggedness, integration, and reliability.

The MAX4484/MAX4486/MAX4487 family was engineered specifically for cost-sensitive, single-supply systems needing rail-to-rail output swing, wide temperature operation, and capacitive-load immunity - targeting instrumentation, automotive sensing, and portable electronics.

FAQ

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

The MAX4486ASA+T is unity-gain stable with capacitive loads up to 100pF, as confirmed in the Electrical Characteristics table and Figure 2 of the datasheet. This specification applies across the full –40°C to +125°C temperature range and eliminates the need for series isolation resistors when interfacing with ADC inputs or long PCB traces. Exceeding 100pF may cause peaking or ringing, requiring external compensation per Application Information section.

Does the MAX4486ASA+T support true ground-sensing input operation?

Yes, the MAX4486ASA+T supports ground-sensing inputs with a common-mode voltage range extending down to VSS (0V). As specified in the Electrical Characteristics table, VCM minimum is VSS across all temperatures, enabling direct connection to current-sense resistors, thermocouples, or other sensors referenced to system ground - a key advantage over op amps requiring input bias above ground.

What is the guaranteed input offset voltage specification for MAX4486ASA+T over temperature?

The MAX4486ASA+T has a guaranteed maximum input offset voltage of ±7.0mV over the full operating temperature range of –40°C to +125°C, per the "Electrical Characteristics-TA = –40°C to +125°C" table. This value is distinct from the ±0.3mV typical value at +25°C and reflects worst-case drift and initial tolerance combined - essential for designing accurate sensor front ends without calibration.

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

Yes, the MAX4486ASA+T is explicitly recommended for single-supply zero-crossing detectors per the Applications list. Its ground-sensing inputs (VCM = VSS) and rail-to-rail output allow direct AC coupling of the input signal with a simple resistor divider biasing the noninverting input near mid-supply, while the output cleanly swings between VSS and VDD to generate logic-compatible edges - no external level shifters required.

What package type and RoHS status does the MAX4486ASA+T use?

The MAX4486ASA+T uses an 8-pin SO (Small Outline) package (S8-2 land pattern), measuring 5.0mm × 6.2mm with 1.27mm lead pitch. The "+T" suffix indicates tape-and-reel packaging, and the "A" grade confirms industrial temperature qualification (–40°C to +125°C). Per Maxim's Package Information table, this variant is RoHS-compliant, with no lead content exceeding EU Directive limits.