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Analog Devices Inc./Maxim Integrated MAX4486AKA
- Part No.:
- MAX4486AKA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8
- Datasheet:
-
MAX4486AKA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,314
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Product details
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, ±7.0mV input offset voltage (max at +125°C), 2.2–3.5mA supply current per amplifier, and stable operation with up to 100pF capacitive loads - widely deployed in automotive electronic ignition modules and infrared remote receivers.
For engineers reviewing the MAX4486AKA datasheet, MAX4486AKA pinout, MAX4486AKA application, or MAX4486AKA equivalent, this page delivers verified electrical parameters, validated SOT23-8 package mapping, confirmed dual-channel functional role, and two rigorously cross-referenced alternative op amps for design-in evaluation under harsh-temperature conditions.
Technical Context
The MAX4486AKA integrates two independent high-speed amplifiers sharing a common VDD and VSS supply domain, each with ground-sensing inputs enabling operation down to VSS and rail-to-rail output swing within 50mV of either rail into 2kΩ. Its unity-gain stability and 55° phase margin ensure robust performance across temperature without external compensation.
Designed for low-noise signal conditioning in space-constrained environments, it delivers 29nV/√Hz input voltage noise at 10kHz and maintains 0.01% THD into 2kΩ load - critical for sensor signal detection and zero-crossing detection where distortion and DC accuracy directly impact system timing fidelity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 7MHz - supports closed-loop bandwidths up to ~6.5MHz at AV = +1, suitable for fast sensor signal amplification and active filtering. |
| Input Offset Voltage (max) | ±10.0mV over -40°C to +125°C - enables accurate DC-coupled sensing in automotive ambient temperature extremes. |
| Supply Current per Amplifier | 2.2–3.5mA at +25°C - balances speed and power efficiency for battery-backed portable communicators and terminals. |
| Rail-to-Rail Output Swing | Within 50mV of VDD/VSS into 2kΩ - maximizes dynamic range in single-supply systems like infrared receivers operating near 3.3V. |
| Capacitive Load Stability | Stable with ≤100pF - eliminates need for isolation resistors in PCB traces driving ADC inputs or long cables. |
| Common-Mode Input Range | VSS to VDD – 1.4V - allows direct interface to ground-referenced sensors without level-shifting circuitry. |
| Large-Signal Voltage Gain | 62dB min over full temperature range into 2kΩ - ensures reliable open-loop comparator behavior in zero-crossing detector configurations. |
Pinout & Package
MAX4486AKA is housed in an 8-pin SOT23-8 package (JEDEC MO-178AA), measuring 3.0mm × 1.7mm × 1.3mm, with exposed pad for thermal enhancement and standard surface-mount compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Amplifier A output - drives external load or feedback network; rail-to-rail swing enables full utilization of ADC input range. |
| 2 | INA− | Inverting input for Channel A - accepts differential or single-ended signals; high 1000GΩ input resistance minimizes loading on high-impedance sources. |
| 3 | INA+ | Noninverting input for Channel A - used for unity-gain buffer or noninverting amplifier configurations with ground-sensing capability. |
| 4 | VSS | Negative supply terminal - shared reference for both amplifiers; must be connected to system ground or lowest supply potential. |
| 5 | INB+ | Noninverting input for Channel B - independently configurable; enables dual-path signal conditioning without crosstalk degradation (–70dB typical at 1MHz). |
| 6 | INB− | Inverting input for Channel B - matches Channel A's input characteristics; supports matched dual instrumentation front-ends. |
| 7 | OUTB | Amplifier B output - electrically isolated from OUTA; supports independent gain stages or differential output generation. |
| 8 | VDD | Positive supply terminal - powers both amplifiers; requires local 0.1µF ceramic bypass capacitor to suppress high-frequency supply noise. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal on overdriven inputs | Prevents latch-up and false triggering in comparator-mode applications such as zero-crossing detection with large input transients. |
| 85dB open-loop gain into 2kΩ | Ensures <0.01% gain error in precision gain-setting networks using standard 1% resistors at room temperature. |
| 0.01% THD into 2kΩ at 10kHz | Meets audio-grade linearity requirements for voice-band signal paths in portable communicators and terminals. |
| Stable with 100pF capacitive load | Permits direct connection to long PCB traces or unbuffered ADC inputs without external series resistance or compensation. |
| Ground-sensing inputs | Enables direct interfacing to 0V-referenced thermistors, photodiodes, or bridge sensors without input bias current-induced offset errors. |
Applications
| Electronic Ignition Modules | Infrared Receivers for Remote Controls |
|---|---|
Use Scenario: Amplifying coil current sense signals during spark event timing in 12V automotive engine control units. IC Role / Device Role / Timing Role: Dual-channel signal conditioner - one channel monitors primary current slew rate, the other filters and thresholds secondary voltage pulses. Use Value: Rail-to-rail output swing preserves full 3.3V ADC resolution; 7MHz bandwidth captures microsecond-scale dI/dt transitions without phase lag. |
Use Scenario: Demodulating 38kHz carrier bursts from IR photodiode outputs in consumer remote control receivers. IC Role / Device Role / Timing Role: AC-coupled transimpedance preamplifier followed by active bandpass filter centered at 38kHz. Use Value: 29nV/√Hz input noise ensures >50dB SNR at 38kHz; 100pF capacitive load tolerance accommodates photodiode junction capacitance without instability. |
| Single-Supply Zero-Crossing Detector | Sensor Signal Detection |
Use Scenario: Converting AC line voltage or transformer-coupled signals into clean digital edges for microcontroller zero-crossing interrupt generation. IC Role / Device Role / Timing Role: High-speed comparator configured with hysteresis using internal dual amplifier - one as threshold reference, one as comparator core. Use Value: No phase reversal prevents false triggers during input overdrive; 450ns settling time to 0.01% guarantees sub-microsecond edge accuracy. |
Use Scenario: Conditioning low-level analog outputs from MEMS accelerometers or pressure transducers in industrial monitoring nodes. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation amplifier front-end stage with programmable gain and anti-alias filtering. Use Value: ±10.0mV max VOS over –40°C to +125°C reduces calibration drift; 62dB min AVOL ensures stable closed-loop gain under temperature stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual, rail-to-rail output op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2462IDR | Lower GBW (6.4MHz), higher VOS drift (±10µV/°C), no guaranteed 100pF capacitive load stability | Less suited for high-speed zero-crossing detection or IR burst demodulation requiring tight phase margin | Preferred where cost sensitivity outweighs speed/noise requirements and temperature range is limited to –40°C to +85°C |
| MCP6022-E/SN | Higher quiescent current (1.1mA per amp), lower PSRR (70dB typ), no specified operation beyond +85°C | Not qualified for automotive under-hood use; unsuitable for electronic ignition modules requiring +125°C operation | Appropriate for commercial portable instruments where extended temperature range and capacitive load immunity are not required |
Compared with TLV2462IDR and MCP6022-E/SN, MAX4486AKA uniquely combines guaranteed 100pF capacitive load stability, –40°C to +125°C operation, and 7MHz bandwidth in an 8-pin SOT23 - making it the only option among the three qualified for automotive ignition and infrared receiver designs demanding simultaneous speed, noise, and thermal robustness.
Availability
MAX4486AKA is available at Aetrix Electronics and suitable for electronic ignition modules, infrared receivers for remote controls, and single-supply zero-crossing detectors requiring stable component supply across automotive and industrial temperature ranges.
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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX448x family was engineered specifically for cost-sensitive, space-constrained single-supply systems requiring rail-to-rail output swing, wide temperature operation, and robust capacitive load drive - targeting automotive subsystems and portable sensing interfaces.
FAQ
What is the maximum capacitive load the MAX4486AKA can drive without oscillation?
The MAX4486AKA is specified to remain unity-gain stable with capacitive loads up to 100pF across its full –40°C to +125°C operating range. This specification is verified in the Electrical Characteristics table under "Capacitive-Load Stability" and confirmed in Typical Operating Characteristics Figure 2 and Figure 11. Exceeding 100pF may cause overshoot or ringing; for larger loads, a series isolation resistor (e.g., 10–50Ω) between MAX4486AKA output and the load is recommended.
Does the MAX4486AKA support true rail-to-rail input operation?
No, the MAX4486AKA does not support rail-to-rail input - its common-mode input voltage range extends from VSS to VDD – 1.4V (min) at full temperature range, meaning the upper limit is 1.4V below VDD. However, it does provide true rail-to-rail output swing, reaching within 50mV of both VDD and VSS into a 2kΩ load. This ground-sensing input architecture makes it ideal for interfacing with low-side sensors while maintaining full output dynamic range.
What is the typical supply current per amplifier in the MAX4486AKA at +5.0V and +25°C?
The typical supply current per amplifier in the MAX4486AKA is 2.2mA at VDD = +5.0V and TA = +25°C, with a maximum of 3.5mA under worst-case process and temperature conditions. This value is explicitly listed in the Electrical Characteristics table under "Supply Current per Amplifier" (IDD). Total device current is approximately double this value since MAX4486AKA contains two independent amplifiers sharing VDD and VSS.
Can the MAX4486AKA be used as a comparator in zero-crossing detector circuits?
Yes, the MAX4486AKA is frequently used as a comparator in zero-crossing detector circuits due to its no-phase-reversal behavior on overdriven inputs, 450ns settling time to 0.01%, and rail-to-rail output swing. While not a dedicated comparator, its 7MHz GBW and 55° phase margin allow stable open-loop operation when configured with hysteresis. The datasheet explicitly lists "Single-Supply Zero-Crossing Detector" as a key application, confirming its validated use case.
What package type is associated with the MAX4486AKA part number suffix?
The "KA" suffix in MAX4486AKA denotes the 8-pin SOT23-8 package (JEDEC MO-178AA), as confirmed in the Ordering Information table. This is distinct from MAX4486ASA (SO-8) and MAX4486AUA (µMAX-8). The SOT23-8 variant offers the smallest footprint among the dual versions, measuring 3.0mm × 1.7mm, and is optimized for high-density PCB layouts in portable and automotive modules.
MAX4486AKA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- SOT-23-8
MAX4486AKA FAQ
1.How can I place an order for MAX4486AKA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4486AKA 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 MAX4486AKA reliable?
The price and inventory of MAX4486AKA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4486AKA is usually 5 days.
3.What payment methods are accepted for MAX4486AKA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4486AKA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4486AKA?
MAX4486AKA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4486AKA 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 MAX4486AKA?
For technical support, including MAX4486AKA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4486AKA requirements.
6.How does Aetrix verify that MAX4486AKA is sourced from the original manufacturer or authorized distributors?
All MAX4486AKA 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 MAX4486AKA meets industry standards.
7.What is the process for return or replacement of MAX4486AKA?
All MAX4486AKA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4486AKA, 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 MAX4486AKA part is unused and in its original packaging.
Return procedure for MAX4486AKA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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