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Analog Devices Inc./Maxim Integrated MAX4401AXT
- Part No.:
- MAX4401AXT
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
MAX4401AXT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,125
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Product details
Overview
The MAX4401AXT from Maxim Integrated is a single-channel, rail-to-rail output operational amplifier with integrated shutdown control, designed for low-power, single-supply signal conditioning in space-constrained systems. It operates from +2.5V to +5.5V, draws 320µA quiescent current (1µA in shutdown), delivers ±1.4mA output drive, and features unity-gain stability up to 400pF capacitive load - enabling robust sensor interface and portable instrumentation applications.
For engineers reviewing the MAX4401AXT datasheet, MAX4401AXT pinout, MAX4401AXT application, or MAX4401AXT equivalent, key selection criteria include its 6-pin SC70 package, shutdown-enabled power gating, rail-to-rail output swing within 55mV of rails at 2kΩ load, and guaranteed operation from −40°C to +125°C for automotive and industrial environments.
Technical Context
The MAX4401AXT implements a ground-sensing input stage and rail-to-rail CMOS output stage, supporting common-mode input down to VSS and output swing to within 55mV of VDD/VSS. Its 1MHz gain-bandwidth product and 70° phase margin ensure stable unity-gain operation even with 400pF capacitive loads.
Shutdown is controlled via a dedicated SHDN pin with TTL-compatible thresholds (VIH ≥ 0.7×VDD, VIL ≤ 0.3×VDD); asserting SHDN low disables the amplifier core and places the output in high-impedance state while reducing supply current to ≤1µA. Input bias and offset currents are ultra-low (±0.1pA typ, ±100pA max), enabling high-impedance source interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V single supply - enables direct battery-powered operation without level-shifting. |
| Quiescent Current | 320µA per amplifier - supports always-on sensing nodes with multi-year battery life. |
| Shutdown Current | ≤1µA - allows deep sleep mode in intermittent-measurement systems. |
| Output Drive | ±1.4mA into 2kΩ - sufficient to drive ADC reference buffers or LED bias circuits directly. |
| Gain-Bandwidth Product | 1MHz - supports bandwidth-critical functions like active filtering up to ~100kHz. |
| Input Offset Voltage | ±0.8mV (typ), ±4.5mV (max) - ensures <0.1% error in 10-bit precision signal chains. |
| Capacitive Load Stability | Stable up to 400pF - eliminates need for external isolation resistors in PCB trace or cable-driven outputs. |
Pinout & Package
The MAX4401AXT is housed in a 6-pin SC70 package (2.0mm × 1.25mm, 0.5mm pitch), optimized for ultra-compact PCB layouts in portable and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Noninverting Input | High-impedance (1000GΩ) node accepting signals from sensors or DACs without loading. |
| 2 (IN−) | Inverting Input | Differential input node for closed-loop configurations; matched to IN+ for low offset. |
| 3 (OUT) | Amplifier Output | Rail-to-rail CMOS output capable of sourcing/sinking ±1.4mA while swinging within 55mV of VDD/VSS. |
| 4 (VSS) | Negative Supply | Ground reference for single-supply operation; must be connected to system GND. |
| 5 (SHDN) | Active-Low Shutdown Control | TTL-compatible enable input; pull high to operate, pull low to enter 1µA shutdown with high-Z output. |
| 6 (VDD) | Positive Supply | Primary power input; bypass with 0.1µF capacitor to VSS for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Output Swing | Swings to within 55mV of VDD and VSS at 2kΩ load - preserves dynamic range in low-voltage systems. |
| Ground-Sensing Inputs | Common-mode range extends to VSS - enables direct interfacing with current-sense shunts or thermocouples referenced to ground. |
| Ultra-Low Input Bias Current | ±0.1pA typical - minimizes voltage error across high-value feedback or sensor resistors (>1MΩ). |
| 110dB Open-Loop Gain | Ensures <0.01% gain error in precision amplification stages with moderate closed-loop gains. |
| 0.015% THD at 10kHz | Supports clean signal amplification in audio and sensor front-ends without harmonic distortion artifacts. |
Applications
| Single-Supply Zero-Crossing Detector | Portable Sensor Signal Conditioning |
|---|---|
Use Scenario: Detecting AC waveform polarity transitions in battery-powered energy meters or motor controllers. IC Role / Device Role / Timing Role: Comparator replacement with hysteresis-free zero-cross detection using internal rail-to-rail output and ground-sensing inputs. Use Value: Eliminates dual-supply requirement and reduces BOM count by operating from single 3.3V battery while maintaining sub-mV threshold accuracy. |
Use Scenario: Amplifying weak mV-level outputs from temperature, pressure, or gas sensors in handheld diagnostic tools. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with shutdown control synchronized to sensor sampling intervals. Use Value: Achieves 12-bit effective resolution with <±0.8mV offset and 320µA quiescent draw, extending battery life beyond 500 hours per charge. |
| Automotive Electronic Ignition Module | Infrared Receiver Front-End |
Use Scenario: Signal conditioning for coil driver feedback in engine control units exposed to −40°C to +125°C ambient. IC Role / Device Role / Timing Role: High-temp-stable amplifier buffering ignition timing pulses before microcontroller capture. Use Value: Guaranteed operation across full automotive temperature range with <±4.5mV input offset drift and 1µA shutdown leakage. |
Use Scenario: Amplifying low-amplitude, high-frequency IR photodiode signals in remote control receivers. IC Role / Device Role / Timing Role: Low-noise transimpedance amplifier with 1MHz GBW and 36nV/√Hz input voltage noise. Use Value: Delivers clean 38kHz carrier amplification with 0.015% THD and stable response into photodiode capacitance up to 400pF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-channel, shutdown-enabled op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSV911ICT | Higher 8MHz GBW but no shutdown; 550µA IQ; SC70-5 package (no SHDN pin) | Lacks power-gating capability - unsuitable for duty-cycled sensor nodes requiring µA sleep current. | Select when bandwidth >1MHz is required and shutdown is managed externally or not needed. |
| MCP6001UT-E/OT | 380µA IQ, 1µA shutdown, rail-to-rail I/O, but only 1kHz GBW and ±6mV VOS (max) | Lower precision and bandwidth - acceptable for basic buffer/level-shift but not for precision zero-crossing or sensor gain. | Select for cost-sensitive, non-precision applications where 1kHz bandwidth suffices and layout space permits SOT-23-5. |
Compared with TSV911ICT and MCP6001UT-E/OT, the MAX4401AXT uniquely balances 1MHz bandwidth, ±0.8mV offset, rail-to-rail output, and true 1µA shutdown in a 6-pin SC70 - making it optimal for compact, battery-operated precision analog front-ends demanding both performance and power control.
Availability
The MAX4401AXT is available at Aetrix Electronics and suitable for automotive electronic ignition modules, portable medical sensors, and infrared receiver designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4401AXT 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX4400–MAX4403 family was engineered for cost-sensitive, low-power, single-supply signal conditioning - delivering rail-to-rail output, shutdown capability, and AEC-Q100-grade temperature operation in miniature packages.
FAQ
What is the maximum capacitive load the MAX4401AXT can drive stably?
The MAX4401AXT is unity-gain stable driving capacitive loads up to 400pF, as verified in the datasheet's Typical Operating Characteristics (Figure 19). This eliminates the need for series isolation resistors in most PCB trace or cable-connected applications, simplifying layout and preserving signal integrity without sacrificing stability.
Does the MAX4401AXT require external components for stable operation?
The MAX4401AXT requires only a 0.1µF ceramic bypass capacitor between VDD and VSS, placed as close as possible to the pins. No compensation network or external resistors are needed for unity-gain stability - its internal design ensures robust performance with capacitive loads ≤400pF and resistive loads ≥2kΩ.
What is the input common-mode voltage range of the MAX4401AXT?
The MAX4401AXT features ground-sensing inputs with an input common-mode voltage range from VSS to (VDD − 1.4V) at room temperature, extending to (VDD − 1.5V) over the full −40°C to +125°C range. This allows direct interfacing with sensors or shunt resistors referenced to ground without level-shifting circuitry.
How does the shutdown function affect the output state of the MAX4401AXT?
When the SHDN pin is pulled low, the MAX4401AXT disables its internal amplifier core and places the OUT pin in a high-impedance (tri-state) condition. Output leakage remains ≤±1.0µA, ensuring minimal loading on downstream circuitry - critical for multiplexed or shared-bus analog signal paths.
Is the MAX4401AXT qualified for automotive applications?
Yes - the MAX4401AXT is specified for operation from −40°C to +125°C and is commonly used in automotive electronic ignition modules and body control units. While not explicitly AEC-Q100 certified in this variant, its temperature rating, parametric guarantees, and qualification history across the MAX4400–MAX4403 family support automotive-grade deployment under manufacturer guidance.
MAX4401AXT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 800 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 800 µV
- Current - Supply:
- 410µA
- Current - Output / Channel:
- 30 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-70-6
MAX4401AXT FAQ
1.How can I place an order for MAX4401AXT through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4401AXT 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 MAX4401AXT reliable?
The price and inventory of MAX4401AXT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4401AXT is usually 5 days.
3.What payment methods are accepted for MAX4401AXT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4401AXT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4401AXT?
MAX4401AXT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4401AXT 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 MAX4401AXT?
For technical support, including MAX4401AXT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4401AXT requirements.
6.How does Aetrix verify that MAX4401AXT is sourced from the original manufacturer or authorized distributors?
All MAX4401AXT 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 MAX4401AXT meets industry standards.
7.What is the process for return or replacement of MAX4401AXT?
All MAX4401AXT units undergo pre-shipment inspection (PSI). If there is an issue with MAX4401AXT, 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 MAX4401AXT part is unused and in its original packaging.
Return procedure for MAX4401AXT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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