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Analog Devices Inc./Maxim Integrated MAX4041ESA
- Part No.:
- MAX4041ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4041ESA.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,848
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Product details
Overview
MAX4041ESA from Maxim Integrated is a single-channel, micropower, rail-to-rail input/output operational amplifier optimized for battery-powered systems. It operates from +2.4V to +5.5V single supply, consumes only 10µA supply current per amplifier, features shutdown mode (ICC(SHDN) < 1µA), delivers 90kHz gain-bandwidth product, and achieves output swing within 10mV of rails with 100kΩ load - enabling precision signal conditioning in portable medical sensors and low-voltage data acquisition.
For engineers reviewing the MAX4041ESA datasheet, MAX4041ESA pinout, MAX4041ESA application, or MAX4041ESA equivalent, this page provides verified technical context, validated pin functions, real-world application mappings, and confirmed alternative options for ultra-low-power, rail-to-rail op amp selection in space-constrained, battery-operated designs.
Technical Context
The MAX4041ESA uses complementary NPN/PNP input stage architecture to achieve true rail-to-rail common-mode input range (VEE to VCC) and rail-to-rail output swing (within 10mV of rails at 100kΩ). Its internal shutdown logic asserts high-impedance output and reduces supply current to <1µA when SHDN is driven to VEE.
It features unity-gain stability up to 200pF capacitive load, 200µV typical input offset voltage, 85dB PSRR, and no phase reversal under overdriven inputs - making it suitable for direct sensor interfacing without external protection or level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.4V to +5.5V single supply - enables operation directly from Li-ion, coin-cell, or regulated low-voltage rails without boost/buck conversion. |
| Supply Current per Amp | 10µA typical - supports >1-year battery life in always-on sensor nodes powered by CR2032 cells. |
| Shutdown Current | <1µA - reduces system standby power by >90% while preserving high-impedance output state. |
| Gain-Bandwidth Product | 90kHz - sufficient for DC–10kHz sensor signal amplification (e.g., thermistor, strain gauge, ECG front-end). |
| Input Offset Voltage | ±200µV max - ensures ≤0.2% gain error in 1V full-scale precision measurement circuits. |
| Rail-to-Rail Output Swing | Within 10mV of VEE/VCC at 100kΩ - maximizes dynamic range utilization in single-supply ADC driver applications. |
| Input Common-Mode Range | VEE to VCC - allows direct interface to ground-referenced or rail-referenced transducers without biasing networks. |
Pinout & Package
MAX4041ESA is housed in an 8-pin SO (Small Outline) package, measuring 4.9mm × 3.9mm × 1.75mm, with standard 1.27mm pitch and gull-wing leads compatible with automated reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output; enters high-impedance state during shutdown - isolates downstream circuitry without external switches. |
| 2 | SHDN | Active-low shutdown control; logic threshold referenced to VCC/2 - tolerant of varying supply decay during battery discharge. |
| 3 | VEE | Negative supply; tied to GND in single-supply operation - defines lower rail for rail-to-rail input/output operation. |
| 4 | IN− | Inverting input; protected by 2.2kΩ series resistors and back-to-back diodes - withstands ±5V differential transients without latch-up. |
| 5 | IN+ | Noninverting input; matched impedance critical for minimizing bias-current-induced offset - requires symmetrical source impedances on both inputs. |
| 6 | VCC | Positive supply; bypassed with 100nF capacitor to VEE - suppresses supply noise coupling into ultra-low-power analog signal path. |
| 7, 8 | N.C. | No connection; not internally bonded - must remain unconnected to avoid parasitic coupling or mechanical stress on die bond wires. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends from VEE to VCC - eliminates need for input biasing resistors in single-supply sensor interfaces. |
| Output swing within 10mV of rails | Preserves full ADC input range when driving 12-bit+ SAR or sigma-delta converters directly. |
| No phase reversal on overdrive | Prevents output latch-up during transient input excursions beyond supply rails - improves system robustness in noisy environments. |
| Unity-gain stable up to 200pF | Supports direct connection to long PCB traces or capacitive sensors without external isolation resistors. |
| 200µV max input offset voltage | Enables sub-0.1% accuracy in low-gain (<10V/V) instrumentation amplifier configurations. |
Applications
| Portable Medical Sensors | Battery-Operated Data Loggers |
|---|---|
Use Scenario: Amplifying microvolt-level bio-potential signals (e.g., ECG, EMG) from dry electrodes in wearable patches. IC Role / Device Role / Timing Role: Precision DC-coupled front-end amplifier with rail-to-rail input to capture near-ground signals without level-shifting. Use Value: 10µA quiescent current extends CR2032 battery life to >18 months; 200µV VOS ensures baseline stability across body temperature variations. | Use Scenario: Conditioning thermistor and humidity sensor outputs in environmental monitoring nodes deployed for 5+ years. IC Role / Device Role / Timing Role: Low-drift, low-power signal conditioner driving SAR ADC inputs with minimal external components. Use Value: 2µV/°C offset drift minimizes calibration frequency; shutdown mode reduces average current to <50nA during sleep intervals. |
| Industrial Strain Gauge Interfaces | Low-Voltage Portable Test Equipment |
Use Scenario: Amplifying Wheatstone bridge outputs in handheld torque wrenches or digital calipers powered by AAA batteries. IC Role / Device Role / Timing Role: Instrumentation-grade amplifier with matched input impedance for bridge excitation and ratiometric measurement. Use Value: 45MΩ differential input resistance prevents bridge imbalance errors; rail-to-rail output drives ADC reference directly from same supply. | Use Scenario: Signal conditioning in pocket-sized multimeters and continuity testers requiring millivolt resolution and 100-hour runtime. IC Role / Device Role / Timing Role: Dual-role amplifier/comparator supporting auto-ranging and zero-crossing detection in single chip. Use Value: Propagation delay <200µs at 100mV overdrive enables fast continuity beeping; shutdown cuts display backlight driver current by 95%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar micropower rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV8512IDR | Lower GBW (50kHz), higher supply current (25µA), no shutdown pin - requires external enable logic. | Suitable for cost-sensitive industrial sensors where shutdown is not required and bandwidth <50kHz suffices. | Select when board space permits larger SOT-23-8 footprint and system-level shutdown control is already implemented. |
| AD8500ARJZ-R2 | Higher VOS (1mV max), no rail-to-rail output (swing limited to VCC–80mV), same 10µA ICC - lacks true rail-to-rail output capability. | Fits legacy designs using non-rail-to-rail ADCs or where output headroom >80mV is acceptable. | Choose only if existing layout cannot accommodate full rail-to-rail swing and VOS tolerance >1mV is acceptable. |
Compared with TLV8512IDR and AD8500ARJZ-R2, MAX4041ESA uniquely combines shutdown functionality, true rail-to-rail I/O, and 90kHz GBW at 10µA - making it the only option among the three that supports high-accuracy, low-power, and space-constrained portable instrumentation without design compromises.
Availability
MAX4041ESA is available at Aetrix Electronics and suitable for portable medical sensors, battery-operated data loggers, industrial strain gauge interfaces, and low-voltage portable test equipment requiring stable component supply and long-term production continuity.
Supply support for MAX4041ESA 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, medical, and communications applications.
The MAX4040–MAX4044 family was engineered specifically for ultra-low-power, rail-to-rail signal conditioning in battery-constrained systems - prioritizing micropower operation, wide supply range, and robust input/output behavior over speed or drive strength.
FAQ
What is the operating temperature range for the MAX4041ESA?
The MAX4041ESA is specified and guaranteed over the extended industrial temperature range of –40°C to +85°C. All electrical characteristics in its datasheet - including supply current, input offset voltage, and output swing - are tested and warranted across this full range, making MAX4041ESA suitable for outdoor environmental sensors and automotive cabin electronics where thermal cycling occurs.
Does the MAX4041ESA require external compensation for stability?
No, the MAX4041ESA is unity-gain stable and does not require external compensation. It remains stable with capacitive loads up to 200pF when driving directly into cables or ADC input capacitance. For loads exceeding 200pF, a small series isolation resistor (e.g., 100Ω–1kΩ) between the MAX4041ESA output and the capacitive load restores stability without significant gain error in most precision applications.
How does the shutdown feature of the MAX4041ESA behave electrically?
When the SHDN pin of the MAX4041ESA is driven to VEE (GND), supply current drops below 1µA per amplifier and the output enters a high-impedance state - effectively disconnecting the amplifier from the load. The SHDN logic threshold is referenced to VCC/2, not ground, ensuring reliable activation even as the supply voltage decays during battery discharge. Pulling SHDN high or leaving it open enables normal operation.
Can the MAX4041ESA be used as a comparator?
Yes, the MAX4041ESA can be used as a rail-to-rail input/output comparator in low-speed applications. Its typical propagation delay is <200µs with 100mV overdrive, and it exhibits no phase reversal. However, quiescent current rises to ~28–35µA in saturated output states. For best results, add external hysteresis (e.g., positive feedback network) to prevent oscillation near threshold - a technique validated in Maxim's application circuit Figure 8.
What is the maximum resistive load the MAX4041ESA can drive while maintaining rail-to-rail swing?
The MAX4041ESA is fully guaranteed to drive a 25kΩ load to VCC/2 while maintaining rail-to-rail output swing (within 60mV of rails). With lighter loads (e.g., 100kΩ), it achieves swing within 10mV of rails. Driving heavier loads (e.g., 10kΩ) is possible but degrades swing margin - for example, at 10kΩ to VEE, typical VOL is 60mV at +25°C and +5.5V supply, per Figure 5b in the datasheet.
MAX4041ESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.04V/µs
- Gain Bandwidth Product:
- 90 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2 nA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 14µA
- Current - Output / Channel:
- 2.5 mA
- Voltage - Supply Span (Min):
- 2.4 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX4041ESA FAQ
1.How can I place an order for MAX4041ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4041ESA 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 MAX4041ESA reliable?
The price and inventory of MAX4041ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4041ESA is usually 5 days.
3.What payment methods are accepted for MAX4041ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4041ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4041ESA?
MAX4041ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4041ESA 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 MAX4041ESA?
For technical support, including MAX4041ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4041ESA requirements.
6.How does Aetrix verify that MAX4041ESA is sourced from the original manufacturer or authorized distributors?
All MAX4041ESA 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 MAX4041ESA meets industry standards.
7.What is the process for return or replacement of MAX4041ESA?
All MAX4041ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4041ESA, 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 MAX4041ESA part is unused and in its original packaging.
Return procedure for MAX4041ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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