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Analog Devices Inc./Maxim Integrated MAX4401AXT+T
- Part No.:
- MAX4401AXT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
MAX4401AXT+T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:5,877
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Product details
Overview
The MAX4401AXT+T from Maxim Integrated is a single-channel, rail-to-rail output operational amplifier with active-low shutdown control, operating from +2.5V to +5.5V supply, drawing 320µA quiescent current and sinking/source ±1.4mA load current. It features 1MHz gain-bandwidth, unity-gain stability up to 400pF capacitive load, and is specified for automotive-grade operation from −40°C to +125°C in a 6-pin SC70 package.
For engineers reviewing the MAX4401AXT+T datasheet, MAX4401AXT+T pinout, MAX4401AXT+T application, or MAX4401AXT+T equivalent, this page delivers verified circuit role (single-supply precision signal conditioning), exact package mapping (SC70-6), confirmed shutdown behavior (1µA max ISHDN, high-Z output), thermal performance (θJA = 326°C/W on single-layer board), and real-world automotive/industrial use cases requiring low-power, high-temp stability.
Technical Context
The MAX4401AXT+T implements a ground-sensing input stage and rail-to-rail CMOS output stage, enabling full dynamic range utilization in single-supply systems. Its shutdown logic is active-low (SHDN pin), with guaranteed VIH ≥ 0.7×VDD and VIL ≤ 0.3×VDD, and output leakage limited to ±1.0µA over −40°C to +125°C.
It achieves 110dB open-loop gain (AVOL) into 2kΩ, 0.015% THD at 10kHz with 2kΩ load, and maintains stable operation driving capacitive loads up to 400pF without external compensation-critical for sensor interface and zero-crossing detector circuits where phase margin (70°) and settling time (7µs to 0.1%) are design-critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V - Enables direct interfacing with Li-ion battery, 3.3V, and 5V logic domains without level-shifting. |
| Quiescent Current | 320µA per amplifier - Supports always-on sensor front-ends and portable instrumentation with multi-year battery life. |
| Shutdown Current | 1µA (max) - Reduces system standby power by >300× while preserving high-impedance output for multiplexed analog paths. |
| Gain-Bandwidth Product | 1MHz - Sufficient for DC–100kHz signal conditioning in automotive ignition modules and infrared receivers. |
| Rail-to-Rail Output Swing | Within 55mV of rails (RL = 2kΩ) - Maximizes ADC input dynamic range and eliminates need for negative supply in single-ended systems. |
| Input Offset Voltage | ±4.5mV (max) - Ensures <0.1% error in 12-bit precision applications like electronic ignition timing and sensor signal detection. |
| Capacitive Load Stability | Stable up to 400pF - Allows direct connection to long PCB traces, cables, or EMI filters without oscillation risk. |
Pinout & Package
MAX4401AXT+T is housed in a 6-pin SC70 package (package code X6SN+1), measuring 2.0mm × 1.25mm × 0.9mm, with exposed pad not electrically connected. Thermal resistance is θJA = 326°C/W (single-layer board) and θJC = 115°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN+ | Noninverting input - High-impedance (1000GΩ), ground-sensing node compatible with single-ended sensor outputs. |
| 2 | IN− | Inverting input - Matches IN+ in bias current (±100pA max), enabling low-offset differential sensing. |
| 3 | VSS | Negative supply - Tied to GND in single-supply operation; supports rail-to-rail common-mode input down to VSS. |
| 4 | OUT | Amplifier output - Rail-to-rail CMOS stage capable of ±1.4mA drive into 2kΩ, high-Z in shutdown mode. |
| 5 | VDD | Positive supply - Accepts +2.5V to +5.5V; requires local 0.1µF bypass capacitor to minimize PSRR degradation. |
| 6 | SHDN | Active-low shutdown enable - Pull high (≥0.7×VDD) for normal operation; pull low (≤0.3×VDD) to enter 1µA shutdown state. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full-scale signal headroom into 2kΩ loads, eliminating clipping in battery-powered data loggers. |
| 1µA shutdown current | Enables ultra-low-power wake-on-event architectures in automotive body controllers and IoT edge nodes. |
| Unity-gain stable to 400pF | Removes need for external isolation resistors when driving ADC input caps or long sensor cables. |
| Ground-sensing inputs | Accepts input signals down to VSS (0V), simplifying interface with thermistors, RTDs, and bridge sensors. |
| −40°C to +125°C operation | Qualified for under-hood automotive and industrial motor control environments without derating. |
Applications
| Single-Supply Zero-Crossing Detector | Automotive Electronic Ignition Module |
|---|---|
Use Scenario: Detecting AC waveform polarity transitions in microcontroller-based motor control or power metering. IC Role / Device Role / Timing Role: Comparator replacement with hysteresis-free thresholding using rail-to-rail output and fast 7µs settling. Use Value: Eliminates dual-supply requirement and reduces BOM count versus discrete comparator solutions. |
Use Scenario: Amplifying and conditioning coil driver feedback signals in engine control units (ECUs). IC Role / Device Role / Timing Role: Signal conditioner for knock sensor or primary current sense, operating reliably at 125°C ambient. Use Value: Maintains <0.1% offset drift across temperature, ensuring precise spark timing under thermal stress. |
| Infrared Receiver Front-End | Sensor Signal Detection (Thermistor/RTD) |
Use Scenario: Amplifying weak, low-frequency IR photodiode currents in remote controls or occupancy sensors. IC Role / Device Role / Timing Role: Low-noise (36nV/√Hz), low-IQ transimpedance amplifier with shutdown during idle periods. Use Value: Extends battery life in wireless remotes while preserving 10kHz bandwidth for pulse decoding. |
Use Scenario: Linearizing and amplifying resistance-based temperature sensor outputs in HVAC or battery packs. IC Role / Device Role / Timing Role: Precision buffer with ground-sensing inputs and rail-to-rail output for 12-bit ADC interfacing. Use Value: Achieves ±0.5°C accuracy over −40°C to +125°C without calibration due to low TCVOS (±1µV/°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-channel, shutdown-capable op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSV911ICT | Higher GBW (8MHz), no shutdown, 5-pin SC70, 600µA IQ | Better for high-speed filtering but lacks power gating for intermittent sensing. | Select when speed >1MHz is required and shutdown is unnecessary. |
| MCP6001T-E/OT | Lower IQ (100µA), no shutdown, 5-pin SOT23, 1MHz GBW | Smaller footprint and lower static power, but no high-Z output disable capability. | Select for cost-sensitive, always-on applications where shutdown is not needed. |
Compared with TSV911ICT and MCP6001T-E/OT, the MAX4401AXT+T uniquely combines shutdown control, rail-to-rail output, and automotive temperature range in a 6-pin SC70-making it the only choice for thermally demanding, duty-cycled sensor interfaces requiring output isolation.
Availability
MAX4401AXT+T is available at Aetrix Electronics and suitable for automotive electronic ignition modules, infrared receivers, portable communications devices, and sensor signal detection systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4401AXT+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 automotive, industrial, and communications markets.
The MAX4400–MAX4403 family was engineered specifically for cost-sensitive, single-supply signal conditioning in harsh-environment applications-emphasizing rail-to-rail operation, low quiescent current, and extended temperature reliability.
FAQ
What is the maximum capacitive load the MAX4401AXT+T can drive stably?
The MAX4401AXT+T is unity-gain stable driving capacitive loads up to 400pF without external compensation. This specification is verified across the full −40°C to +125°C temperature range and enables direct interfacing with ADC input capacitors, long PCB traces, or EMI filter networks without risk of oscillation. Exceeding 400pF requires series isolation resistance per Figure 3 in the datasheet.
Does the MAX4401AXT+T require external components for basic operation?
Yes-the MAX4401AXT+T requires a 0.1µF ceramic bypass capacitor between VDD and VSS, placed as close as possible to the device pins. No other external components are mandatory for basic operation, though SHDN must be actively driven (not left floating) and input/output traces should be minimized to reduce stray capacitance per layout guidelines in the datasheet.
What is the output behavior of the MAX4401AXT+T during shutdown?
When SHDN is pulled low, the MAX4401AXT+T output enters a true high-impedance (Hi-Z) state with leakage current limited to ±1.0µA over −40°C to +125°C. This allows safe multiplexing of multiple amplifiers onto shared analog buses or ADC inputs without loading or contention, unlike op amps that default to mid-rail or clamped outputs in shutdown.
Is the MAX4401AXT+T qualified for automotive applications?
The MAX4401AXT+T is specified for operation from −40°C to +125°C and meets the environmental requirements for under-dash automotive applications. While it is not AEC-Q100 certified (certification applies only to specific MAX4402 variants), its extended temperature rating, robust ESD tolerance, and production screening align with Tier-2 automotive subsystem needs such as body control modules and climate sensors.
How does the input offset voltage of the MAX4401AXT+T vary with temperature?
The MAX4401AXT+T has a typical input offset voltage drift (TCVOS) of ±1µV/°C, resulting in <±0.13mV total drift over the full −40°C to +125°C range. This low drift ensures consistent accuracy in precision sensor interfaces-such as thermistor amplifiers-without requiring periodic recalibration, even in thermally cycling environments like automotive cabins or industrial enclosures.
MAX4401AXT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX4401AXT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4401AXT+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 MAX4401AXT+T reliable?
The price and inventory of MAX4401AXT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4401AXT+T is usually 5 days.
3.What payment methods are accepted for MAX4401AXT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4401AXT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4401AXT+T?
MAX4401AXT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4401AXT+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 MAX4401AXT+T?
For technical support, including MAX4401AXT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4401AXT+T requirements.
6.How does Aetrix verify that MAX4401AXT+T is sourced from the original manufacturer or authorized distributors?
All MAX4401AXT+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 MAX4401AXT+T meets industry standards.
7.What is the process for return or replacement of MAX4401AXT+T?
All MAX4401AXT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4401AXT+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 MAX4401AXT+T part is unused and in its original packaging.
Return procedure for MAX4401AXT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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