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Analog Devices Inc./Maxim Integrated MAX4482ASA
- Part No.:
- MAX4482ASA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4482ASA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,470
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Product details
Overview
MAX4482ASA 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, operates from +2.5V to +5.5V, delivers ±3mA output drive, and maintains unity-gain stability with up to 400pF capacitive load-enabling precision signal conditioning in automotive sensor interfaces.
For engineers reviewing the MAX4482ASA datasheet, MAX4482ASA pinout, MAX4482ASA application, or MAX4482ASA equivalent, key selection criteria include its SO-8 package, dual-channel architecture, rail-to-rail output swing (within 80mV of rails at 5kΩ), 105dB open-loop gain, and guaranteed operation over extended temperature range without shutdown functionality.
Technical Context
The MAX4482ASA implements a BiCMOS input stage enabling ultra-low input bias current (±0.1pA typ) and high input resistance (1000MΩ), supporting high-impedance sensor front-ends. Its rail-to-rail output stage uses complementary push-pull circuitry to achieve <80mV saturation voltage at 5kΩ loads under full temperature range.
It features 140kHz gain-bandwidth product, 70° phase margin, and 30dB gain margin-ensuring stable closed-loop performance in unity-gain configurations driving reactive loads. Input common-mode range extends from VSS to VDD − 1.3V, supporting wide dynamic range in single-supply systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V - supports direct interface with Li-ion battery and 3.3V/5V logic domains |
| Quiescent Current per Amp | 50μA - enables multi-year battery life in always-on portable instrumentation |
| Output Drive Capability | ±3mA - sufficient to drive 5kΩ loads while maintaining rail-to-rail swing |
| Open-Loop Gain (AVOL) | 105dB at 5kΩ load - ensures <0.001% gain error in precision gain stages |
| Capacitive Load Stability | Up to 400pF - eliminates need for external isolation resistors in ADC driver applications |
| Input Offset Voltage | ±5.5mV max - suitable for DC-coupled sensor amplification without trimming |
| THD @ 1kHz | 0.005% at 100kΩ load - preserves signal fidelity in audio and IR receiver front-ends |
Pinout & Package
MAX4482ASA is housed in an 8-pin SO (Small Outline) package with standard 1.27mm pitch, compatible with automated PCB assembly and offering improved thermal dissipation vs. SOT23.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INA−) | Inverting input of amplifier A | Accepts feedback network or inverted signal path; high-impedance node requiring guard trace |
| 2 (INA+) | Noninverting input of amplifier A | Connects to high-Z sensors or reference dividers; input capacitance 2.0pF limits RF pickup |
| 3 (OUTA) | Output of amplifier A | Rail-to-rail capable; drives 5kΩ load within 80mV of VDD/VSS; sinks/sources ±3mA |
| 4 (VSS) | Negative supply / ground | Must be bypassed with 0.01μF capacitor to minimize PSRR degradation |
| 5 (VDD) | Positive supply | Accepts +2.5V to +5.5V; requires 0.01μF bypass to GND near pin |
| 6 (INB−) | Inverting input of amplifier B | Independent channel input; no crosstalk with channel A above 60dB up to 100kHz |
| 7 (INB+) | Noninverting input of amplifier B | Duplicate of INA+ functionality; enables differential pair or dual-sensor processing |
| 8 (OUTB) | Output of amplifier B | Electrically isolated from OUTA; supports independent load switching or dual-path buffering |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Within 80mV of VDD/VSS at 5kΩ load across full -40°C to +125°C range |
| Ultra-low quiescent current | 50μA per amplifier enables dual-channel operation at <100μA total supply draw |
| High open-loop gain | 105dB at 5kΩ ensures minimal gain error in precision instrumentation amplifiers |
| Capacitive-load tolerance | Stable with up to 400pF load eliminates need for output isolation resistors in ADC drivers |
| Low THD | 0.005% at 1kHz/100kΩ supports clean signal recovery in infrared receivers and sensor interfaces |
Applications
| Single-Supply Zero-Crossing Detectors | Portable Communications |
|---|---|
Use Scenario: Detecting polarity transitions in AC-coupled audio or sensor signals using comparator configuration with hysteresis. IC Role / Device Role / Timing Role: Dual op amp configured as precision zero-crossing detector and reference buffer; one channel provides hysteresis, the other buffers reference. Use Value: Rail-to-rail output enables full-swing detection window; 50μA per amp extends battery life in handheld test equipment. | Use Scenario: Amplifying weak RF envelope or baseband signals in Bluetooth/Wi-Fi modules before ADC sampling. IC Role / Device Role / Timing Role: Dual-channel low-noise preamplifier and active filter stage; channels process I/Q paths or transmit/receive chains. Use Value: 0.005% THD preserves modulation integrity; 140kHz GBW supports envelope detection up to 10kHz bandwidth. |
| Electronic Ignition Modules | Sensor Signal Detection |
Use Scenario: Conditioning crankshaft position sensor outputs (variable reluctance or Hall-effect) in engine control units. IC Role / Device Role / Timing Role: Dual amplifier for differential sensor amplification and noise-rejecting filtering prior to microcontroller ADC input. Use Value: Guaranteed operation to +125°C matches under-hood thermal requirements; 400pF load stability accommodates long harness traces. | Use Scenario: Amplifying low-level thermistor, RTD, or piezoelectric sensor outputs in industrial monitoring nodes. IC Role / Device Role / Timing Role: Precision instrumentation front-end with matched dual channels for ratiometric or differential measurement. Use Value: ±5.5mV VOS max avoids calibration drift; 1000MΩ input resistance prevents loading of high-Z resistive sensors. |
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/amp), lower GBW (1MHz), no guaranteed 125°C operation | Targeted at commercial-grade consumer electronics, not automotive or industrial harsh environments | Select when cost sensitivity outweighs temperature range and power constraints |
| MCP6022-E/SN | Lower input offset (250μV max), higher supply current (100μA/amp), same SO-8 package | Better DC precision but higher power; rated only to +85°C, limiting under-hood use | Select when sub-mV offset is critical and operating temperature stays below 85°C |
Compared with LMV358IDR and MCP6022-E/SN, the MAX4482ASA uniquely combines automotive-grade temperature range (-40°C to +125°C), ultra-low 50μA quiescent current, and 400pF capacitive-load stability-making it optimal for battery-powered, high-reliability sensor signal chains where thermal robustness and power efficiency are co-constrained.
Availability
MAX4482ASA is available at Aetrix Electronics and suitable for automotive sensor interfaces, portable instrumentation, and industrial condition-monitoring systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4482ASA 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 demanding industrial, automotive, and communications applications.
The MAX4480–MAX4483 family was engineered for low-power, single-supply signal conditioning in harsh environments-specifically targeting automotive sensors, portable medical devices, and battery-operated instrumentation where rail-to-rail output and wide temperature operation are essential.
FAQ
What is the maximum capacitive load the MAX4482ASA can drive while remaining stable?
The MAX4482ASA is unity-gain stable with capacitive loads up to 400pF, as confirmed in the Electrical Characteristics table and Typical Operating Characteristics (Figure MAX4480 toc19). This allows direct connection to ADC inputs or long PCB traces without external isolation resistors. Stability holds across the full -40°C to +125°C temperature range and +2.5V to +5.5V supply range, making MAX4482ASA suitable for ruggedized data acquisition systems where layout parasitics cannot be tightly controlled.
Does the MAX4482ASA include a shutdown feature?
No, the MAX4482ASA does not include a shutdown feature. Shutdown capability is exclusive to the MAX4481 variant (single-channel with SHDN pin). The MAX4482ASA is a dual-channel op amp without enable/disable control; all pins are signal or supply terminals. This simplifies design in always-on applications but means power reduction requires system-level supply gating. The MAX4482ASA datasheet explicitly lists "No" under Shutdown Mode in the Selector Guide.
What is the input common-mode voltage range for the MAX4482ASA?
The input common-mode voltage range for the MAX4482ASA is specified as VSS to VDD − 1.3V at +25°C and VSS to VDD − 1.4V over the full -40°C to +125°C range. This allows the device to accept signals near ground in single-supply configurations while rejecting supply noise effectively. The range is validated by CMRR testing and supports DC-coupled interfacing with sensors whose output spans 0V to near-VDD, such as resistive bridge elements referenced to mid-supply.
Can the MAX4482ASA operate from a 2.5V supply?
Yes, the MAX4482ASA is fully specified to operate from a minimum supply voltage of +2.5V, as stated in the Absolute Maximum Ratings and Electrical Characteristics tables. At 2.5V, it maintains rail-to-rail output swing (within 150mV of rails at 5kΩ), 50μA quiescent current, and 105dB open-loop gain. This enables compatibility with single-cell lithium batteries and low-voltage microcontrollers, making MAX4482ASA appropriate for energy-constrained portable systems where headroom is limited.
What package type is used for the MAX4482ASA?
The MAX4482ASA uses an 8-pin SO (Small Outline) package with standard 1.27mm lead pitch and JEDEC MS-012AC outline. This package is distinct from the 8-pin SOT23 (MAX4482AKA+T) and 8-pin μMAX® (MAX4482AUA+) variants. The SO package offers superior thermal performance and mechanical robustness for reflow soldering, and its land pattern (Maxim outline no. 21-0041, land pattern no. 90-0096) is widely supported in PCB design libraries.
MAX4482ASA 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:
- 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:
- 8-SOIC
MAX4482ASA FAQ
1.How can I place an order for MAX4482ASA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4482ASA 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 MAX4482ASA reliable?
The price and inventory of MAX4482ASA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4482ASA is usually 5 days.
3.What payment methods are accepted for MAX4482ASA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4482ASA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4482ASA?
MAX4482ASA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4482ASA 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 MAX4482ASA?
For technical support, including MAX4482ASA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4482ASA requirements.
6.How does Aetrix verify that MAX4482ASA is sourced from the original manufacturer or authorized distributors?
All MAX4482ASA 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 MAX4482ASA meets industry standards.
7.What is the process for return or replacement of MAX4482ASA?
All MAX4482ASA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4482ASA, 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 MAX4482ASA part is unused and in its original packaging.
Return procedure for MAX4482ASA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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