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Analog Devices Inc./Maxim Integrated MAX4482ASA+T
- Part No.:
- MAX4482ASA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4482ASA+T.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,214
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Product details
Overview
MAX4482ASA+T from Maxim Integrated is a dual, rail-to-rail output operational amplifier optimized for low-power, single-supply systems. It operates from +2.5V to +5.5V, draws 50μA per amplifier, 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 MAX4482ASA+T datasheet, MAX4482ASA+T pinout, MAX4482ASA+T application, or MAX4482ASA+T equivalent, key selection criteria include its 8-pin SO package, -40°C to +125°C automotive temperature rating, rail-to-rail output swing (≤80mV from rails at 5kΩ), 105dB open-loop gain, and 0.005% THD at 100kΩ load.
Technical Context
The MAX4482ASA+T implements a BiCMOS input stage with rail-to-rail CMOS output stage, supporting common-mode input voltage from VSS to VDD − 1.3V and delivering full-swing output across the supply range. Its 140kHz gain-bandwidth product and 70° phase margin ensure stable operation in unity-gain configurations driving reactive loads.
It features matched dual amplifiers sharing a single 8-pin SO package, with independent IN+/IN−/OUT pins per channel and shared VDD/VSS rails. No shutdown functionality is present - distinguishing it from the MAX4481 variant - and all specifications are guaranteed over the full -40°C to +125°C automotive temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V - enables direct interface with Li-ion battery, 3.3V, and 5V logic domains without level shifting. |
| Quiescent Current | 50μA per amplifier - supports always-on sensor front-ends with multi-year battery life in portable devices. |
| Output Drive | ±3mA sink/source - drives 5kΩ loads while maintaining rail-to-rail swing within 80mV of VDD/VSS. |
| Open-Loop Gain | 105dB at 5kΩ load - ensures <1mV error in high-precision DC-coupled gain stages (e.g., thermocouple amplification). |
| THD | 0.005% at 1kHz, 2VP-P, 100kΩ load - 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 input capacitance or long PCB traces. |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive, industrial motor control, and harsh-environment monitoring. |
Pinout & Package
MAX4482ASA+T is housed in an 8-pin small-outline (SO) package with standard 1.27mm pitch, RoHS-compliant lead finish, and thermal pad not present. The package supports reflow soldering per JEDEC J-STD-020 and has a maximum power dissipation of 471mW at TA = +70°C (derated 5.9mW/°C above).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INA− | Inverting input for Amplifier A - requires low-impedance source or guard trace to minimize bias current error. |
| 2 | INA+ | Noninverting input for Amplifier A - referenced to VSS/VDD for single-supply zero-crossing detection. |
| 3 | VSS | Negative supply rail - must be connected to ground; bypass with 0.1μF capacitor near pin. |
| 4 | OUTA | Amplifier A output - rail-to-rail swing supports full dynamic range into 5kΩ loads. |
| 5 | OUTB | Amplifier B output - electrically isolated from OUTA; no crosstalk specification provided but >60dB typical at 100kHz. |
| 6 | INB+ | Noninverting input for Amplifier B - independently configurable; shares VDD/VSS with Channel A. |
| 7 | INB− | Inverting input for Amplifier B - matched input characteristics to INA− enable dual-channel differential sensing. |
| 8 | VDD | Positive supply rail - operates from 2.5V–5.5V; bypass with 0.1μF capacitor near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings to within 80mV of VDD/VSS at 5kΩ load - maximizes dynamic range in single-supply data acquisition systems. |
| Low quiescent current | 50μA per amplifier - enables integration into ultra-low-power wake-up circuits without compromising response time. |
| Unity-gain stability | Guaranteed stable with CLOAD ≤ 400pF - simplifies design of anti-aliasing filters and sensor interface buffers without compensation networks. |
| High open-loop gain | 105dB at 5kΩ - reduces gain error to <0.001% in closed-loop configurations with moderate feedback ratios. |
| Automotive temperature grade | Specified from -40°C to +125°C - eliminates derating calculations for engine control, exhaust gas sensing, and battery management. |
Applications
| Electronic Ignition Modules | Infrared Receivers |
|---|---|
Use Scenario: Amplifying low-amplitude coil driver signals in automotive ignition control units where EMI immunity and thermal stability are critical. IC Role / Device Role / Timing Role: Dual-channel signal conditioner - one channel processes primary current sense, the other buffers secondary voltage feedback. Use Value: Rail-to-rail output swing preserves full signal amplitude across wide temperature swings, while 125°C rating ensures reliability under hood temperatures. | Use Scenario: Demodulating weak IR carrier signals in remote-control receivers operating from coin-cell batteries. IC Role / Device Role / Timing Role: Low-noise preamplifier and bandpass filter driver - configured as transimpedance amp for photodiode current conversion. Use Value: 50μA quiescent current extends battery life; 0.005% THD prevents harmonic distortion of 38kHz carrier envelope detection. |
| Sensor Signal Detection | Single-Supply Zero-Crossing Detectors |
Use Scenario: Conditioning millivolt-level outputs from RTDs, thermocouples, or pressure bridges in industrial process controllers. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end - dual configuration enables differential input with common-mode rejection and reference buffering. Use Value: 105dB AVOL minimizes gain error; 1000MΩ input resistance prevents loading of high-impedance sensor elements. | Use Scenario: Detecting AC zero-crossing points in smart metering and solid-state relay control using resistive divider inputs. IC Role / Device Role / Timing Role: Comparator replacement - configured with hysteresis via feedback to eliminate noise-induced chatter on slow-rising waveforms. Use Value: Rail-to-rail output ensures clean TTL/CMOS-compatible logic transitions; 140kHz GBW supports accurate timing up to 50/60Hz with margin. |
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 100μA quiescent current; 1MHz GBW; only specified to +105°C. | Limited to commercial/industrial temp range; less suitable for under-hood automotive use. | Select when higher bandwidth is required and extended temperature operation is not needed. |
| MCP6022-E/SN | Lower 100nA input bias current; 10MHz GBW; 170μA quiescent current; +125°C rated. | Higher power consumption; better for high-impedance sensor sources but less battery-friendly. | Select when ultra-low input bias current is critical and supply current budget allows >3× increase. |
Compared with LMV358IDR and MCP6022-E/SN, MAX4482ASA+T provides the optimal balance of ultra-low power (50μA), automotive-grade temperature range (-40°C to +125°C), and rail-to-rail output performance in an industry-standard 8-pin SO package - making it preferred for space-constrained, battery-powered, and harsh-environment sensor signal chains.
Availability
MAX4482ASA+T is available at Aetrix Electronics and suitable for electronic ignition modules, infrared receivers, sensor signal detection, and single-supply zero-crossing detectors requiring stable component supply across automotive and industrial production cycles.
Supply support for MAX4482ASA+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 demanding industrial, automotive, and communications applications.
The MAX4480–MAX4483 family was engineered specifically for cost-sensitive, low-power, single-supply op amp applications requiring rail-to-rail output swing and guaranteed operation across the full automotive temperature range.
FAQ
What is the operating temperature range for MAX4482ASA+T?
The MAX4482ASA+T is fully specified from -40°C to +125°C, meeting AEC-Q100 Grade 0 requirements for automotive under-hood applications. This range is guaranteed across all electrical parameters including input offset voltage, supply current, and open-loop gain - no derating is required for operation at maximum ambient temperature.
Does MAX4482ASA+T include a shutdown feature?
No, MAX4482ASA+T does not include a shutdown function. Shutdown capability is exclusive to the MAX4481 variant (single-channel, 6-pin SC70/SOT23). The MAX4482ASA+T is a dual amplifier with fixed operation - all pins are active during power-up, and there is no SHDN pin or associated control logic on this device.
What package type is used for MAX4482ASA+T?
MAX4482ASA+T uses an 8-pin small-outline (SO) package with standard 1.27mm lead pitch and RoHS-compliant matte tin plating. It is distinct from the SOT23-8 and μMAX variants of the MAX4482 family - this specific part number maps exclusively to the SO package per Maxim's ordering information table.
Can MAX4482ASA+T drive a 10kΩ load rail-to-rail?
Yes, MAX4482ASA+T maintains rail-to-rail output swing with ≤4mV from VDD/VSS when driving a 100kΩ load, and ≤80mV from rails with a 5kΩ load. While not explicitly tested at 10kΩ in the datasheet, its 3mA output drive capability and output stage architecture confirm stable rail-to-rail operation at 10kΩ - consistent with its 5kΩ/100kΩ test conditions and 400pF capacitive-load stability.
Is MAX4482ASA+T pin-compatible with other MAX4482 variants?
No, MAX4482ASA+T is not pin-compatible with other MAX4482 variants. The MAX4482AKA+T (SOT23-8) and MAX4482AUA+ (μMAX) use different pinouts and footprints. Only the 8-pin SO package (MAX4482ASA+) shares identical pin numbering and function mapping - mixing packages requires PCB redesign due to differing land patterns and terminal locations.
MAX4482ASA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX4482ASA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4482ASA+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 MAX4482ASA+T reliable?
The price and inventory of MAX4482ASA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4482ASA+T is usually 5 days.
3.What payment methods are accepted for MAX4482ASA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4482ASA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4482ASA+T?
MAX4482ASA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4482ASA+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 MAX4482ASA+T?
For technical support, including MAX4482ASA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4482ASA+T requirements.
6.How does Aetrix verify that MAX4482ASA+T is sourced from the original manufacturer or authorized distributors?
All MAX4482ASA+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 MAX4482ASA+T meets industry standards.
7.What is the process for return or replacement of MAX4482ASA+T?
All MAX4482ASA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4482ASA+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 MAX4482ASA+T part is unused and in its original packaging.
Return procedure for MAX4482ASA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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