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Analog Devices Inc./Maxim Integrated MAX4480AXK+T
- Part No.:
- MAX4480AXK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX4480AXK+T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,193
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Product details
Overview
MAX4480AXK+T from Maxim Integrated is a single-channel, rail-to-rail output operational amplifier optimized for ultra-low-power, single-supply operation across -40°C to +125°C. It draws only 50μA quiescent current, operates from +2.5V to +5.5V, delivers ±3mA output drive, and maintains unity-gain stability with up to 400pF capacitive load - ideal for battery-powered sensor signal conditioning in automotive and industrial modules.
For engineers reviewing the MAX4480AXK+T datasheet, MAX4480AXK+T pinout, MAX4480AXK+T application, or MAX4480AXK+T equivalent, key selection criteria include its SC70-5 package footprint, 105dB open-loop gain at 5kΩ load, 0.005% THD with 100kΩ load, rail-to-rail output swing within 80mV of rails, and guaranteed operation over extended temperature range without shutdown logic.
Technical Context
The MAX4480AXK+T uses a BiCMOS input stage enabling picoampere-level input bias current (±0.1pA typ) and high input resistance (1000MΩ), supporting precision DC-coupled sensing. Its rail-to-rail output stage employs complementary push-pull transistors to achieve <80mV saturation voltage into 5kΩ loads at full temperature range.
Designed for stability with capacitive loads, it features internal compensation ensuring ≥70° phase margin and ≥30dB gain margin at unity gain, validated up to 400pF. The device lacks shutdown functionality (per ordering guide), distinguishing it from the MAX4481 variant, and relies on fixed single-supply biasing with VSS referenced to ground.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V - enables direct interface with Li-ion, 3.3V, and 5V systems without level-shifting. |
| Quiescent Current | 50μA per amplifier - supports >1-year battery life in always-on sensor nodes drawing <100μA total system current. |
| Input Offset Voltage | ±5.5mV max - ensures ≤5.5mV DC error in 12-bit ADC front-ends with 2.048V reference (0.27% FSR error). |
| Open-Loop Gain | 105dB at 5kΩ load - provides >300,000× loop gain for stable closed-loop gain accuracy in instrumentation amplifiers. |
| Output Swing | Rail-to-rail - delivers full 0V to VDD dynamic range into 100kΩ, critical for maximizing SNR in low-voltage ADC drivers. |
| Capacitive Load Drive | Stable up to 400pF - eliminates need for external isolation resistors when driving ADC input capacitance or long PCB traces. |
| Gain-Bandwidth Product | 140kHz - supports bandwidth-limited applications like thermocouple amplification (≤10kHz) with ample phase margin. |
Pinout & Package
MAX4480AXK+T is housed in a 5-pin SC70 package (outline 21-0076), measuring 2.0mm × 1.25mm × 0.95mm, compatible with fine-pitch automated assembly and space-constrained PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Noninverting Input | High-impedance node (1000MΩ) accepting DC- or AC-coupled sensor signals; requires guard ring for leakage-sensitive designs. |
| 2 (IN-) | Inverting Input | Feedback node for closed-loop configurations; matched to IN+ for minimal input offset drift over temperature. |
| 3 (OUT) | Amplifier Output | Push-pull rail-to-rail driver capable of sourcing/sinking ±3mA; connects directly to ADC inputs or analog switches. |
| 4 (VDD) | Positive Supply | +2.5V to +5.5V input; requires local 0.1μF ceramic bypass capacitor to minimize PSRR degradation above 10kHz. |
| 5 (VSS) | Negative Supply / Ground | Reference node for single-supply operation; must be tied to system ground with low-inductance path to reduce noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full 0V to VDD range into 100kΩ loads, preserving dynamic range in 3.3V/5V data acquisition systems. |
| 105dB open-loop gain @ 5kΩ | Enables precise gain-setting with standard 1% resistors while maintaining stability in high-precision transducer interfaces. |
| 0.005% THD @ 1kHz, 100kΩ | Supports clean signal amplification for audio-grade infrared receivers and low-distortion sensor excitation circuits. |
| Unity-gain stable to 400pF | Eliminates external compensation components when driving SAR ADCs with typical 10–30pF input capacitance plus trace parasitics. |
| 50μA supply current | Permits integration into energy-harvesting nodes where average current budget is <100μA across sleep/active cycles. |
Applications
| Automotive Electronic Ignition Modules | Portable Gas Sensor Terminals |
|---|---|
|
Use Scenario: Amplifying low-level coil current sense signals in 12V ignition control units exposed to under-hood temperatures up to +125°C. IC Role / Device Role / Timing Role: Precision DC-coupled current-sense amplifier with rail-to-rail output driving microcontroller ADC inputs. Use Value: Maintains <5.5mV offset error across temperature, enabling accurate dwell time calculation without calibration drift. |
Use Scenario: Conditioning electrochemical sensor outputs in handheld air-quality monitors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Ultra-low-power transimpedance amplifier converting pA-level gas sensor currents to measurable voltage. Use Value: 50μA quiescent current extends battery life beyond 2 years in intermittent-readout mode with 10s sampling intervals. |
| Infrared Receiver Front-Ends | Industrial Temperature Transmitter Signal Chains |
|
Use Scenario: Amplifying weak modulated IR photodiode signals in remote-control receivers operating from 3.3V supplies. IC Role / Device Role / Timing Role: Low-noise, low-THD preamplifier stage preceding bandpass filtering and demodulation. Use Value: 0.005% THD preserves signal integrity during envelope detection, minimizing false-trigger events in noisy environments. |
Use Scenario: Buffering and level-shifting RTD bridge outputs in 4–20mA loop-powered temperature transmitters deployed in factory settings. IC Role / Device Role / Timing Role: Rail-to-rail output buffer isolating precision delta-sigma ADC from sensor bridge impedance variations. Use Value: 105dB open-loop gain ensures <0.01% gain error over 4-decade bridge resistance range (100Ω–100kΩ). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-channel, rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9001IDBVR | Higher 1MHz GBW but 150μA IQ; no guaranteed 125°C operation; SC70-5 package. | Better for higher-bandwidth sensor interfaces (e.g., ultrasonic distance measurement), less suitable for extended-temp automotive use. | Select TLV9001IDBVR only if bandwidth >100kHz is required and temperature range can be limited to -40°C to +105°C. |
| LMV321IDBVR | Lower 1.4MHz GBW, 80μA IQ, specified only to +125°C in selected variants; same SC70-5 footprint. | Acceptable for cost-sensitive industrial terminals where 140kHz GBW suffices and full automotive qualification is not mandated. | Choose LMV321IDBVR when BOM cost reduction is prioritized and thermal derating margins allow operation below 125°C junction. |
Compared with TLV9001IDBVR and LMV321IDBVR, the MAX4480AXK+T uniquely balances ultra-low power (50μA), guaranteed +125°C operation, and 400pF capacitive-load stability in a 5-pin SC70 - making it the only option among the three qualified for continuous-duty automotive ignition modules and harsh-environment transmitters.
Availability
MAX4480AXK+T is available at Aetrix Electronics and suitable for automotive electronic ignition modules, portable gas sensor terminals, infrared receiver front-ends, and industrial temperature transmitter signal chains requiring stable component supply across extended temperature ranges.
Supply support for MAX4480AXK+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 targets ultra-low-power, single-supply signal conditioning in space- and energy-constrained systems - emphasizing rail-to-rail output, wide temperature operation, and capacitive-load robustness for sensor and transducer interfaces.
FAQ
What is the maximum capacitive load the MAX4480AXK+T can drive while remaining stable?
The MAX4480AXK+T 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, long PCB traces, or filtering networks without external isolation resistors. Stability is maintained across the full -40°C to +125°C temperature range and 2.5V to 5.5V supply range, eliminating need for layout-dependent compensation in most sensor interface designs.
Does the MAX4480AXK+T include a shutdown feature?
No, the MAX4480AXK+T does not include a shutdown feature. Per the Selector Guide and Pin Configurations section, only the MAX4481 variant (6-pin SC70/SOT23) offers active-low SHDN functionality. The MAX4480AXK+T is a single-amplifier device in 5-pin SC70 with no shutdown pin - its quiescent current remains fixed at 50μA regardless of external control signals. This simplifies design for always-on applications where power cycling is unnecessary.
What is the input common-mode voltage range for the MAX4480AXK+T?
The input common-mode voltage range for the MAX4480AXK+T 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 means with a +5V supply, the usable input range extends from 0V to +3.6V (min) or +3.7V (typ), accommodating most single-supply sensor outputs without level-shifting. The BiCMOS input stage enables this wide range while maintaining picoampere input bias current.
Can the MAX4480AXK+T operate from a 2.5V supply while meeting all specifications?
Yes, the MAX4480AXK+T is fully specified for operation from +2.5V to +5.5V, including all key parameters: 50μA quiescent current (tested at VDD = 2.5V), rail-to-rail output swing, 105dB open-loop gain at 5kΩ, and 400pF capacitive-load stability. The Absolute Maximum Ratings confirm safe operation down to -0.3V on VSS and up to +6V on VDD, providing 0.5V headroom for transient immunity at minimum supply. This makes it suitable for direct integration with 2.5V logic and low-voltage energy-harvesting systems.
What package type and dimensions does the MAX4480AXK+T use?
The MAX4480AXK+T uses a 5-pin SC70 package (package code X5+1, outline 21-0076), measuring 2.0mm × 1.25mm × 0.95mm with a 0.65mm pitch. This compact footprint matches industry-standard SC70 land patterns (land pattern no. 90-0188) and supports high-density PCB layouts in portable and automotive modules. The "+" suffix indicates RoHS-compliant, lead(Pb)-free construction, and "T" denotes tape-and-reel packaging for automated assembly.
MAX4480AXK+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- 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
- 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:
- SC-70-5
MAX4480AXK+T FAQ
1.How can I place an order for MAX4480AXK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4480AXK+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 MAX4480AXK+T reliable?
The price and inventory of MAX4480AXK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4480AXK+T is usually 5 days.
3.What payment methods are accepted for MAX4480AXK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4480AXK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4480AXK+T?
MAX4480AXK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4480AXK+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 MAX4480AXK+T?
For technical support, including MAX4480AXK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4480AXK+T requirements.
6.How does Aetrix verify that MAX4480AXK+T is sourced from the original manufacturer or authorized distributors?
All MAX4480AXK+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 MAX4480AXK+T meets industry standards.
7.What is the process for return or replacement of MAX4480AXK+T?
All MAX4480AXK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4480AXK+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 MAX4480AXK+T part is unused and in its original packaging.
Return procedure for MAX4480AXK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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