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Analog Devices Inc./Maxim Integrated MAX4482AKA+T
- Part No.:
- MAX4482AKA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8
- Datasheet:
-
MAX4482AKA+T.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
The MAX4482AKA+T from Maxim Integrated is a dual, rail-to-rail output operational amplifier optimized for low-power, single-supply operation across -40°C to +125°C. It draws 50μA per amplifier at 5V, delivers 3mA output drive, and maintains unity-gain stability with up to 400pF capacitive load-enabling precision signal conditioning in automotive sensor interfaces and portable instrumentation.
For engineers reviewing the MAX4482AKA+T datasheet, MAX4482AKA+T pinout, MAX4482AKA+T application, or MAX4482AKA+T equivalent, key selection criteria include its 8-pin SOT23 package, 2.5V–5.5V supply range, rail-to-rail output swing (≤80mV from rails), 105dB open-loop gain at 5kΩ, and 0.005% THD with 100kΩ load.
Technical Context
This dual op amp uses BiCMOS process technology to achieve ultra-low quiescent current while preserving rail-to-rail output stage performance. Its input stage features picoamp-level bias current (±100pA max) and 1000MΩ input resistance, supporting high-impedance sensor front-ends without loading.
The device operates over full automotive temperature range (-40°C to +125°C) with guaranteed specifications including ±5.5mV input offset voltage, 86dB CMRR, 92dB PSRR, and 140kHz gain-bandwidth product-making it suitable for DC-coupled amplification and zero-crossing detection where thermal drift and supply noise rejection are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V single supply - enables direct interface with Li-ion battery or 3.3V/5V logic systems without level shifting. |
| Quiescent Current | 50μA per amplifier - supports always-on sensor nodes with multi-year battery life in portable applications. |
| Output Drive | 3mA source/sink - drives 5kΩ loads while maintaining rail-to-rail swing within 80mV of VDD/VSS. |
| Open-Loop Gain | 105dB at 5kΩ load - ensures <0.001% gain error in precision buffer or gain-stage configurations. |
| THD + Noise | 0.005% at 1kHz, 2VP-P, RL = 100kΩ - preserves signal fidelity in audio and sensor signal chain applications. |
| Capacitive Load Stability | Stable up to 400pF - eliminates need for external isolation resistors when driving ADC inputs or long traces. |
| Input Offset Voltage | ±5.5mV max - allows accurate DC amplification without trimming in cost-sensitive industrial controls. |
| Gain-Bandwidth Product | 140kHz - supports bandwidth-critical functions like active filtering and fast-settling comparators. |
Pinout & Package
MAX4482AKA+T is housed in an 8-pin SOT23 package (package code K8+5, outline 21-0078), with exposed pad not electrically connected. The compact footprint (2.9mm × 1.6mm) supports high-density PCB layouts in space-constrained modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INA− | Inverting input for amplifier A - connects to feedback network or sensor reference point. |
| 2 | INA+ | Noninverting input for amplifier A - accepts high-impedance sensor signals with ≤100pA bias current. |
| 3 | VDD | Positive supply rail - requires 0.1μF bypass capacitor to ground for stable operation. |
| 4 | OUTA | Amplifier A output - rail-to-rail swing supports full dynamic range utilization in 3.3V systems. |
| 5 | OUTB | Amplifier B output - independent output enables dual-channel signal processing without cross-talk. |
| 6 | INB− | Inverting input for amplifier B - isolated from channel A for differential pair or dual-sensor use. |
| 7 | INB+ | Noninverting input for amplifier B - matches INA+ electrical characteristics for matched channel performance. |
| 8 | VSS | Negative supply (ground for single-supply) - must be low-impedance return path for both amplifiers. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output stage | Swings within 80mV of VDD/VSS at 5kΩ load - maximizes usable signal range in low-voltage systems. |
| Unity-gain stable with 400pF load | Eliminates need for output isolation resistor when driving ADCs or cables - simplifies layout and reduces BOM count. |
| 1000MΩ input resistance | Minimizes loading on high-Z sources like piezoelectric sensors or pH electrodes - preserves signal integrity. |
| 140kHz gain-bandwidth product | Supports 10kHz closed-loop bandwidth at gain ≥14 - sufficient for anti-aliasing filters and sensor signal conditioning. |
| Automotive-grade temperature range | Specified from -40°C to +125°C - qualified for under-hood and cabin electronics without derating. |
| Low THD + noise | 0.005% at 1kHz with 100kΩ load - enables clean amplification in infrared receiver and audio preamp circuits. |
Applications
| Single-Supply Zero-Crossing Detectors | Electronic Ignition Modules |
|---|---|
Use Scenario: Detecting AC waveform polarity transitions in engine control units using a single 5V rail. IC Role / Device Role / Timing Role: Dual op amp configured as comparator with hysteresis, leveraging rail-to-rail output to generate clean digital edges. Use Value: Eliminates need for dual supplies or level shifters; 50μA quiescent current minimizes standby power in ignition control modules. | Use Scenario: Amplifying low-level crankshaft position sensor signals in harsh under-hood environments. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier for variable-reluctance sensor outputs prior to microcontroller ADC sampling. Use Value: -40°C to +125°C operation ensures reliability; 1000MΩ input resistance prevents signal attenuation from sensor coil impedance. |
| Infrared Receivers | Sensor Signal Detection |
Use Scenario: Conditioning weak modulated IR photodiode currents in remote control receivers. IC Role / Device Role / Timing Role: Transimpedance amplifier with rail-to-rail output driving subsequent demodulation circuitry. Use Value: 0.005% THD preserves modulation envelope fidelity; 140kHz GBW supports 38kHz carrier detection without phase lag. | Use Scenario: Amplifying millivolt-level outputs from thermocouples or strain gauges in industrial monitoring systems. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation amplifier front-end with matched dual channels for differential sensing. Use Value: ±5.5mV input offset and 86dB CMRR reject common-mode noise from motors or switching power supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV358IDR | Higher quiescent current (80μA vs. 50μA); lower PSRR (70dB vs. 92dB); no guaranteed 125°C operation. | Not qualified for automotive under-hood use; less effective in noisy 12V battery environments. | Select when cost is primary constraint and extended temperature operation is unnecessary. |
| MCP6022-E/SN | Lower input offset (2.5mV max vs. 5.5mV); higher GBW (1MHz vs. 140kHz); same 8-pin SOIC but larger footprint than SOT23. | Better for precision DC gain stages; unsuitable for space-constrained portable designs requiring SOT23. | Select when higher bandwidth and lower offset outweigh size and power constraints. |
Compared with LMV358IDR and MCP6022-E/SN, the MAX4482AKA+T uniquely balances ultra-low power (50μA), automotive temperature rating (-40°C to +125°C), and SOT23 packaging-making it optimal for battery-powered automotive subsystems where board area and thermal robustness are critical.
Availability
MAX4482AKA+T is available at Aetrix Electronics and suitable for automotive sensor interfaces, portable instrumentation, and infrared receiver modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4482AKA+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 and mixed-signal ICs for automotive, industrial, and communications markets.
The MAX4480–MAX4483 family was engineered for cost-sensitive, low-power, single-supply op amp applications demanding rail-to-rail output and extended temperature operation-particularly in automotive electronics and portable equipment.
FAQ
What is the operating temperature range specified for the MAX4482AKA+T?
The MAX4482AKA+T is fully specified from -40°C to +125°C, meeting AEC-Q100 Grade 0 requirements for automotive under-hood and cabin applications. This range is guaranteed across all electrical parameters including input offset voltage, CMRR, and supply current-no derating is required for operation at maximum ambient temperature.
Does the MAX4482AKA+T include shutdown functionality?
No, the MAX4482AKA+T does not feature shutdown functionality. Shutdown is only available on the MAX4481 variant (single-channel with SHDN pin). The MAX4482AKA+T is a dual-channel op amp without enable/disable control; both amplifiers remain active whenever VDD is applied within the 2.5V–5.5V range.
What package type is used for the MAX4482AKA+T?
The MAX4482AKA+T uses an 8-pin SOT23 package (package code K8+5, outline 21-0078), measuring 2.9mm × 1.6mm with standard pitch. This RoHS-compliant, lead(Pb)-free package supports reflow soldering and is compatible with automated pick-and-place assembly.
Can the MAX4482AKA+T drive capacitive loads without oscillation?
Yes, the MAX4482AKA+T is unity-gain stable with capacitive loads up to 400pF, as confirmed in the datasheet's Electrical Characteristics table and Typical Operating Characteristics (Figure MAX4480 toc19). This eliminates instability risks when driving ADC inputs, long PCB traces, or cable-connected sensors without external compensation.
What is the typical input bias current for the MAX4482AKA+T?
The typical input bias current for the MAX4482AKA+T is ±0.1pA at +25°C, with a maximum of ±100pA over the full -40°C to +125°C temperature range. This ultra-low bias current enables high-accuracy amplification of signals from high-impedance sources such as pH electrodes, piezoelectric sensors, and photodiodes without significant DC error.
MAX4482AKA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.08V/µs
- Gain Bandwidth Product:
- 140 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 50µA (x2 Channels)
- Current - Output / Channel:
- 17 mA
- Voltage - Supply Span (Min):
- 2.5 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
MAX4482AKA+T FAQ
1.How can I place an order for MAX4482AKA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4482AKA+T 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 MAX4482AKA+T reliable?
The price and inventory of MAX4482AKA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4482AKA+T is usually 5 days.
3.What payment methods are accepted for MAX4482AKA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4482AKA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4482AKA+T?
MAX4482AKA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4482AKA+T 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 MAX4482AKA+T?
For technical support, including MAX4482AKA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4482AKA+T requirements.
6.How does Aetrix verify that MAX4482AKA+T is sourced from the original manufacturer or authorized distributors?
All MAX4482AKA+T 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 MAX4482AKA+T meets industry standards.
7.What is the process for return or replacement of MAX4482AKA+T?
All MAX4482AKA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4482AKA+T, 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 MAX4482AKA+T part is unused and in its original packaging.
Return procedure for MAX4482AKA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4482AKA+T Tags
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