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Analog Devices Inc./Maxim Integrated MAX4250AAUK+T
- Part No.:
- MAX4250AAUK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4250AAUK+T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX4250AAUK+T from Analog Devices is a single-channel, unity-gain stable, rail-to-rail output operational amplifier optimized for low-noise (7.9nV/√Hz at 30kHz), ultra-low distortion (0.0004% THD+N at 1kHz), and low-power operation (400µA quiescent current per amplifier) in automotive-grade applications. It operates from 2.4V to 5.5V single supply, features input common-mode range extending to ground, and delivers rail-to-rail output swing within 8mV of rails with 10kΩ load - ideal for precision ADC buffering and portable instrumentation in harsh environments.
For engineers reviewing the MAX4250AAUK+T datasheet, MAX4250AAUK+T pinout, MAX4250AAUK+T application, or MAX4250AAUK+T equivalent, key selection criteria include its automotive temperature rating (–40°C to +125°C), 3MHz gain-bandwidth product, 70µV max input offset voltage, 0.5fA/√Hz input current noise density, and confirmed SOT23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX4250AAUK+T belongs to the MAX4249–MAX4257 family of single-supply op amps designed for high-fidelity signal conditioning. Its unity-gain stability and 3MHz GBW enable robust performance in unity-gain buffers and low-gain sensor interfaces without external compensation.
It employs a push-pull output stage capable of ±5mA drive while maintaining DC accuracy into 1kΩ loads, and supports capacitive-load driving up to 400pF without oscillation - critical for driving ADC inputs and long traces in automotive control units.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 3MHz - enables stable unity-gain operation with sufficient bandwidth for 16-bit ADC sampling up to ~300ksps. |
| Input Voltage-Noise Density | 7.9nV/√Hz at 30kHz - ensures minimal added noise in precision analog front-ends for medical sensors or strain gauges. |
| Total Harmonic Distortion + Noise | 0.0004% at 1kHz, 2VP-P, 1kΩ load - preserves signal integrity in audio and wireless PA control loops. |
| Quiescent Supply Current | 400µA per amplifier - supports battery-powered modules requiring multi-year operation on coin cells. |
| Input Offset Voltage (max) | ±1.85mV over –40°C to +125°C - guarantees DC accuracy in automotive temperature-sensing circuits without calibration. |
| Rail-to-Rail Output Swing | Within 8mV of VDD/VSS with 10kΩ load - maximizes dynamic range in 3.3V or 5V systems with limited headroom. |
| Input Common-Mode Range | Includes ground (0V) - allows direct interfacing with grounded transducers and single-ended sensors. |
Pinout & Package
MAX4250AAUK+T is housed in a 5-pin SOT23 package (JEDEC MO-178AA), footprint-compatible with industry-standard 5-lead SOT-23 layouts and suitable for reflow assembly.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output - drives ADC inputs, filters, or downstream stages; rail-to-rail swing supports full-scale utilization. |
| 2 | VSS | Negative supply - must be connected to ground in single-supply configurations; defines reference for input common-mode range. |
| 3 | IN+ | Noninverting input - high-impedance node (1000GΩ) for sensor voltage sensing or reference buffering with minimal loading. |
| 4 | IN− | Inverting input - accepts feedback networks; input capacitance of 11pF requires feed-forward compensation above 20kΩ impedance. |
| 5 | VDD | Positive supply - accepts 2.4V–5.5V; bypassing with 0.1µF ceramic capacitor near pin essential for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Temperature Range | Specified from –40°C to +125°C - qualified for under-hood and powertrain control module deployment. |
| Ultra-Low Input Current Noise | 0.5fA/√Hz - enables high-impedance source interfacing (e.g., piezoelectric transducers) without significant current-noise degradation. |
| Capacitive-Load Stability | Stable with up to 400pF - eliminates need for isolation resistors when driving ADC sample-and-hold inputs or long PCB traces. |
| Ground-Sensing Input | Input common-mode includes VSS (0V) - supports direct connection to grounded thermistors, RTDs, or bridge sensors without level-shifting circuitry. |
| Low Power Shutdown (not available) | No SHDN pin - MAX4250AAUK+T lacks shutdown functionality; confirmed by pin configuration table and ordering guide. |
Applications
| ADC Buffering | Medical Instrumentation |
|---|---|
Use Scenario: Driving the input of a 16-bit SAR ADC (e.g., MAX195) in a portable ECG monitor. IC Role / Device Role / Timing Role: Precision unity-gain buffer isolating high-impedance electrode signals from ADC input capacitance. Use Value: 7.9nV/√Hz input noise and 0.0004% THD+N preserve SNR >95dB across 10Hz–1kHz diagnostic band. | Use Scenario: Signal conditioning for piezoelectric pressure sensors in disposable infusion pumps. IC Role / Device Role / Timing Role: Low-bias-current amplifier interfacing high-Z transducer outputs to analog front-end. Use Value: 1pA typical input bias current and 0.5fA/√Hz current noise prevent signal drift and baseline instability. |
| Digital Scales / Strain Gauges | Wireless Communications Devices |
Use Scenario: Amplifying mV-level Wheatstone bridge outputs in industrial weighing terminals. IC Role / Device Role / Timing Role: Low-offset, rail-to-rail instrumentation amplifier stage with gain = 100V/V. Use Value: ±1.85mV max VOS over –40°C to +125°C ensures <0.02% full-scale error without temperature compensation. | Use Scenario: IF signal amplification in battery-powered LTE IoT modems operating at ambient temperatures up to 85°C. IC Role / Device Role / Timing Role: Low-distortion gain block in receiver chain prior to demodulation. Use Value: 0.0004% THD+N at 1kHz and 3MHz GBW support clean baseband reconstruction for QPSK/QAM signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDBVR | Zero-drift architecture; 0.1µV/°C offset drift vs. 0.3µV/°C for MAX4250AAUK+T; higher 350nA IB vs. 1pA. | Superior DC precision in low-frequency sensor apps; less suitable for high-Z piezo sources due to higher bias current. | Select OPA333AIDBVR when microvolt-level offset stability over temperature is critical and source impedance <100kΩ. |
| ADA4522-1ARZ-R7 | Zero-drift, 3.5nV/√Hz noise at 1kHz, 2.5µV max VOS over –40°C to +125°C; no SOT23-5 package option. | Lower noise and offset than MAX4250AAUK+T but requires SOIC-8 layout change; not pin-compatible. | Choose ADA4522-1ARZ-R7 when ultimate DC accuracy and lower noise justify SOIC-8 footprint and cost premium. |
Compared with OPA333AIDBVR and ADA4522-1ARZ-R7, the MAX4250AAUK+T uniquely balances ultra-low current noise (0.5fA/√Hz), SOT23-5 footprint, and automotive qualification - making it optimal for space-constrained, high-impedance, wide-temperature sensor interfaces where zero-drift isn't required.
Availability
MAX4250AAUK+T is available at Aetrix Electronics and suitable for automotive control units, portable medical devices, and industrial weighing systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4250AAUK+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The MAX4249–MAX4257 product line was engineered specifically for low-noise, low-distortion, rail-to-rail signal conditioning in battery-powered and automotive applications demanding precision under wide temperature and supply-voltage variations.
FAQ
What is the maximum operating temperature range for the MAX4250AAUK+T?
The MAX4250AAUK+T is specified for operation from –40°C to +125°C, meeting AEC-Q100 Grade 0 requirements for automotive under-hood applications. This extended range is explicitly confirmed in the Ordering Information table and Detailed Description section of the datasheet, distinguishing it from commercial-grade variants like MAX4250EUK+T (–40°C to +85°C).
Does the MAX4250AAUK+T include a shutdown pin?
No, the MAX4250AAUK+T does not feature a shutdown function. Pin configuration tables confirm only five pins (OUT, VSS, IN+, IN−, VDD) with no SHDN terminal. The shutdown capability is reserved for specific members of the family - MAX4249, MAX4251, MAX4253, and MAX4256 - as noted in Feature List Note 2 and Selector Guide.
What is the typical input voltage-noise density of the MAX4250AAUK+T at 1kHz?
The typical input voltage-noise density of the MAX4250AAUK+T at 1kHz is 8.9nV/√Hz, as specified in the Electrical Characteristics table on page 3 of the datasheet. This value is confirmed across the full automotive temperature range and is critical for low-noise design in sensor front-ends.
Can the MAX4250AAUK+T drive a 1kΩ load while maintaining rail-to-rail output swing?
Yes, the MAX4250AAUK+T can drive a 1kΩ load while delivering rail-to-rail output swing, though with reduced voltage margin: typical VOL is 47mV above VSS and VOH is 225mV below VDD at 1kΩ (per Electrical Characteristics table). For tighter swing, use ≥10kΩ loads where output swing degrades only to 7–25mV from rails.
Is the MAX4250AAUK+T unity-gain stable?
Yes, the MAX4250AAUK+T is unity-gain stable, as explicitly stated in the General Description ("The MAX4250–MAX4254 are unity-gain stable") and confirmed by its 3MHz gain-bandwidth product and 74° phase margin at AV = 1V/V in the Electrical Characteristics table. This stability eliminates need for external compensation in buffer and gain-of-one configurations.
MAX4250AAUK+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Push-Pull, Rail-to-Rail
- Slew Rate:
- 0.3V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 1.85 mV
- Current - Supply:
- -
- Current - Output / Channel:
- 68 mA
- Voltage - Supply Span (Min):
- 2.4 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX4250AAUK+T FAQ
1.How can I place an order for MAX4250AAUK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4250AAUK+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 MAX4250AAUK+T reliable?
The price and inventory of MAX4250AAUK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4250AAUK+T is usually 5 days.
3.What payment methods are accepted for MAX4250AAUK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4250AAUK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4250AAUK+T?
MAX4250AAUK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4250AAUK+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 MAX4250AAUK+T?
For technical support, including MAX4250AAUK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4250AAUK+T requirements.
6.How does Aetrix verify that MAX4250AAUK+T is sourced from the original manufacturer or authorized distributors?
All MAX4250AAUK+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 MAX4250AAUK+T meets industry standards.
7.What is the process for return or replacement of MAX4250AAUK+T?
All MAX4250AAUK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4250AAUK+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 MAX4250AAUK+T part is unused and in its original packaging.
Return procedure for MAX4250AAUK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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