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Analog Devices Inc./Maxim Integrated MAX4486ASA
- Part No.:
- MAX4486ASA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4486ASA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,308
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Product details
Overview
The 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, ±10.0mV max input offset voltage over temperature, and rail-to-rail output swing into 2kΩ loads - deployed in sensor signal conditioning and portable instrumentation.
For engineers reviewing the MAX4486ASA datasheet, MAX4486ASA pinout, MAX4486ASA application, or MAX4486ASA equivalent, key selection criteria include capacitive-load stability up to 100pF, ground-sensing inputs, no phase reversal on overdrive, and guaranteed performance across –40°C to +125°C industrial temperature range.
Technical Context
This dual op amp uses a CMOS input stage enabling ultra-low input bias current (±100pA max) and high input resistance (1000GΩ), paired with a rail-to-rail output stage capable of sourcing 27mA/sinking 33mA while maintaining <50mV from rails at 2kΩ load. Its unity-gain stable architecture achieves 55° phase margin and 12dB gain margin with 7MHz GBW.
Designed for harsh-environment analog front-ends, it supports full-spec operation from –40°C to +125°C, exhibits 62dB min CMRR and PSRR over that range, and tolerates input common-mode voltage from VSS to VDD – 1.4V - enabling direct sensing of signals near ground in single-supply systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 7MHz - enables stable closed-loop operation up to ~1MHz at gain ≥7, suitable for anti-aliasing and active filtering. |
| Input Offset Voltage (max) | ±10.0mV over –40°C to +125°C - sets DC error floor in precision gain stages and zero-crossing detectors. |
| Rail-to-Rail Output Swing | Within 50mV of VSS/VDD into 2kΩ - maximizes dynamic range in 3.3V/5V systems without level-shifting circuitry. |
| Capacitive Load Stability | Stable with ≤100pF - allows direct driving of ADC input caps, long traces, or RF filters without external isolation resistors. |
| Supply Voltage Range | +2.7V to +5.5V single supply - compatible with Li-ion, USB, and industrial 3.3V/5V rails without charge pumps or dual supplies. |
| Input Bias Current (max) | ±100pA - preserves accuracy in high-impedance sensor interfaces (e.g., pH electrodes, photodiodes). |
| Large-Signal Voltage Gain | 62dB min into 2kΩ at –40°C to +125°C - ensures predictable closed-loop gain accuracy under worst-case thermal conditions. |
Pinout & Package
The MAX4486ASA is housed in an 8-pin SO (Small Outline) package (package code S8-2), measuring 4.9mm × 6.0mm × 1.75mm, RoHS-compliant, with standard gull-wing leads and 1.27mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INA+ | Noninverting input for Channel A - accepts ground-referenced or single-ended signals with VCM down to VSS. |
| 2 | INA− | Inverting input for Channel A - forms feedback node for inverting configurations or reference point for differential pairs. |
| 3 | OUTA | Amplifier output for Channel A - delivers rail-to-rail voltage with <50mV headroom into 2kΩ load. |
| 4 | VSS | Negative power-supply terminal - serves as analog ground reference for both channels; must be low-impedance. |
| 5 | INB− | Inverting input for Channel B - electrically isolated from Channel A; supports independent dual-channel signal paths. |
| 6 | INB+ | Noninverting input for Channel B - shares same VCM range and input specs as INA±; enables matched dual amplification. |
| 7 | OUTB | Amplifier output for Channel B - identical AC/DC performance to OUTA; no crosstalk degradation above –70dB at 1MHz. |
| 8 | VDD | Positive power-supply terminal - supplies both amplifiers; requires local 0.1µF ceramic bypass to VSS. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal on overdriven inputs | Prevents latch-up or erroneous output states when input exceeds common-mode range - critical in comparator-like zero-crossing applications. |
| Ground-sensing inputs | Input common-mode range extends to VSS, enabling direct interface with 0V-referenced sensors (e.g., thermocouples, bridge outputs) without level shifters. |
| 7MHz unity-gain stable bandwidth | Supports fast settling (450ns to 0.01%) and wideband signal conditioning without external compensation components. |
| 0.01% THD into 2kΩ load | Preserves signal fidelity in audio preamps and sensor amplifiers where harmonic distortion impacts measurement resolution. |
| 85dB open-loop gain with 2kΩ load | Ensures <0.1% gain error in unity-gain buffers and low-gain configurations even under heavy loading. |
Applications
| Single-Supply Zero-Crossing Detector | Sensor Signal Detection |
|---|---|
Use Scenario: Detecting polarity transitions of AC-coupled signals (e.g., mains monitoring, motor phase sensing) using a single +3.3V supply. IC Role / Device Role / Timing Role: Dual op amp configured as comparator with hysteresis (Channel A) and reference buffer (Channel B). Use Value: Rail-to-rail output swing and no phase reversal ensure clean, jitter-free zero-crossing pulses without supply translation circuitry. | Use Scenario: Amplifying low-level outputs from resistive bridge sensors (e.g., pressure, load cell) in automotive engine control units. IC Role / Device Role / Timing Role: Instrumentation-grade dual amplifier providing gain and offset adjustment before ADC sampling. Use Value: Ground-sensing inputs accept bridge midpoints near 0V; ±10mV VOS max ensures <0.5% full-scale error at 100mV output span. |
| Portable Communicators | Electronic Ignition Modules |
Use Scenario: Signal conditioning for microphone preamplifiers and IR receiver front-ends in handheld two-way radios. IC Role / Device Role / Timing Role: Low-noise dual amplifier boosting weak transducer signals while rejecting supply ripple. Use Value: 29nV/√Hz input voltage noise and 64dB PSRR at 125°C maintain SNR >60dB in battery-powered RF environments. | Use Scenario: Amplifying coil current sense signals in 12V automotive ignition drivers operating under under-hood thermal stress. IC Role / Device Role / Timing Role: High-temp-stable dual op amp used in current-limit feedback loop and spark timing comparator. Use Value: Guaranteed operation to +125°C and 100pF capacitive load tolerance allow direct connection to noisy ignition coil driver nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV358IDR | Lower GBW (1MHz), higher VOS (±3mV typ), wider supply range (2.7V–5.5V), but only rated to +85°C. | Limited to commercial-temperature consumer electronics; unsuitable for under-hood or industrial ambient use. | Select when cost sensitivity outweighs temperature range and bandwidth requirements. |
| TSV912IDT | Higher GBW (8MHz), lower input bias current (1pA), but VOS drift (±1.5µV/°C) exceeds MAX4486ASA's ±6µV/°C spec. | Better for precision DC-coupled sensors at stable temperatures; less robust for wide thermal excursions. | Choose for low-drift, high-speed applications where ambient stays within 0°C–70°C. |
Compared with LMV358IDR and TSV912IDT, the MAX4486ASA uniquely balances 7MHz bandwidth, –40°C to +125°C operation, and 100pF capacitive-load stability in an SO-8 package - making it optimal for ruggedized dual-channel analog signal chains where thermal reliability and drive capability are non-negotiable.
Availability
MAX4486ASA is available at Aetrix Electronics and suitable for portable communicators, electronic ignition modules, infrared receivers for remote controls, 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 high-performance analog and mixed-signal ICs for industrial, automotive, communications, and computing markets.
The MAX4484/MAX4486/MAX4487 family delivers cost-optimized, rail-to-rail op amps targeting single-supply sensor interfaces, portable instrumentation, and harsh-environment signal conditioning where thermal robustness and capacitive-load drive matter.
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 confirmed in its Electrical Characteristics table and Typical Operating Characteristics plots. This specification applies across the full –40°C to +125°C temperature range and eliminates the need for series isolation resistors when driving ADC input capacitors or long PCB traces. Exceeding 100pF may cause peaking or ringing, as shown in Figure 2 of the MAX4484/MAX4486/MAX4487 datasheet. The MAX4486ASA maintains this stability without external compensation.
Does the MAX4486ASA support true ground-sensing operation on both inputs?
Yes, the MAX4486ASA features ground-sensing inputs with a common-mode voltage range extending from VSS to VDD – 1.4V, verified across –40°C to +125°C. This allows direct connection of sensors whose outputs swing to 0V - such as strain gauge bridges or thermocouples - without level-shifting circuitry. The input stage is CMOS-based, delivering 1000GΩ input resistance and ±100pA max input bias current, preserving signal integrity in high-impedance configurations.
What is the guaranteed output voltage swing for MAX4486ASA into a 2kΩ load?
The MAX4486ASA guarantees rail-to-rail output swing within 50mV of VSS and VDD into a 2kΩ load, per the Electrical Characteristics table at –40°C to +125°C. At TA = +25°C and VDD = +5.0V, typical VOH is 15mV and VOL is 20mV - meaning the output can reach 4.95V and 0.05V respectively. This performance is maintained across temperature, enabling full utilization of ADC input ranges in 3.3V and 5V systems without external rail extension.
Is the MAX4486ASA pin-compatible with other devices in the MAX448x family?
No - the MAX4486ASA uses an 8-pin SO package with a specific dual-amplifier pinout (INA+, INA−, OUTA, VSS, INB−, INB+, OUTB, VDD), which differs from the 5-pin SC70/SOT23 of the MAX4484 and the 14-pin SO/TSSOP of the MAX4487. While functional behavior is consistent across the family, physical pin mapping is not shared. Substituting between variants requires PCB layout changes; the MAX4486ASA is not a drop-in replacement for MAX4484 or MAX4487.
What is the input offset voltage drift specification for MAX4486ASA?
The MAX4486ASA has a guaranteed input offset voltage drift of ±6µV/°C, specified across the full –40°C to +125°C operating range. This value appears in the Electrical Characteristics table under "Input Offset Voltage Drift" and reflects worst-case variation per degree Celsius - critical for DC-coupled applications like precision current sensing or bridge amplification where thermal gradients induce error. It is lower than many general-purpose op amps, supporting stable long-term calibration in industrial equipment.
MAX4486ASA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 20V/µs
- Gain Bandwidth Product:
- 7 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 2.2mA (x2 Channels)
- Current - Output / Channel:
- 33 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX4486ASA FAQ
1.How can I place an order for MAX4486ASA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4486ASA on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX4486ASA reliable?
The price and inventory of MAX4486ASA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4486ASA is usually 5 days.
3.What payment methods are accepted for MAX4486ASA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4486ASA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4486ASA?
MAX4486ASA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4486ASA order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX4486ASA?
For technical support, including MAX4486ASA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4486ASA requirements.
6.How does Aetrix verify that MAX4486ASA is sourced from the original manufacturer or authorized distributors?
All MAX4486ASA products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX4486ASA meets industry standards.
7.What is the process for return or replacement of MAX4486ASA?
All MAX4486ASA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4486ASA, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX4486ASA part is unused and in its original packaging.
Return procedure for MAX4486ASA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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