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Analog Devices Inc./Maxim Integrated MAX4241ESA+
- Part No.:
- MAX4241ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4241ESA+.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:211
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Product details
Overview
MAX4241ESA+ from Maxim Integrated is a single-channel, micropower operational amplifier with Beyond-the-Rails™ inputs and rail-to-rail output, operating from +1.8V to +5.5V supply, consuming only 10µA per amplifier, featuring 200µV input offset voltage and 90kHz gain-bandwidth product - ideal for precision signal conditioning in two-cell alkaline or lithium-ion portable systems.
For engineers reviewing the MAX4241ESA+ datasheet, MAX4241ESA+ pinout, MAX4241ESA+ application, or MAX4241ESA+ equivalent, this page delivers verified electrical specs, SO-8 package layout, shutdown functionality details, real-world sensor interface use cases, and validated alternative op amps for low-voltage battery-powered designs.
Technical Context
The MAX4241ESA+ employs dual NPN/PNP input differential pairs enabling a common-mode input range extending 200mV beyond both rails (VEE − 0.2V to VCC + 0.2V), with rail-to-rail output swing within 9mV of rails under 100kΩ load. Its internal architecture supports unity-gain stability with capacitive loads up to 200pF and exhibits no phase reversal during overdriven input conditions.
It integrates a dedicated SHDN pin enabling <1µA shutdown current (tested at VCC = 1.8V/5.0V), forcing output into high-impedance state. Input bias current is ±2nA typical (±15nA max over temperature), and PSRR is 73dB minimum across full supply range - critical for direct battery-sensing applications without regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V single supply - enables direct operation from aging two-cell alkaline (1.8V end-of-life) or single Li-ion (2.7–3.5V). |
| Supply Current | 10µA per amplifier at +1.8V - supports >200,000 hours runtime on two AA alkaline cells in active mode. |
| Input Offset Voltage | ±200µV (typ), ±1.2mV (max over temp) - ensures sub-mV error in precision sensor amplification (e.g., strain gauges, digital scales). |
| Gain-Bandwidth Product | 90kHz - sufficient for DC-coupled instrumentation, slow analog front-ends, and low-frequency filtering without instability. |
| Rail-to-Rail Output Swing | Within 9mV of rails (100kΩ load) - maximizes dynamic range in low-voltage systems, preserving >99% of available signal swing. |
| Shutdown Current | 1.0µA (typ) at +1.8V - reduces power by 90% vs active mode, enabling ultra-low-power wake-on-event architectures. |
| Input Common-Mode Range | VEE − 0.2V to VCC + 0.2V - allows direct sensing of signals referenced to ground or VCC (e.g., battery terminal monitoring). |
Pinout & Package
MAX4241ESA+ is housed in an 8-pin SO (Small Outline) package, compliant with JEDEC MS-012AC, body size 4.9mm × 3.9mm, 1.75mm height, with 1.27mm pitch. Pin 1 marked via notch or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail voltage swing; high-impedance in shutdown mode when SHDN = low. |
| 2 (IN−) | Inverting input | Differential input node; protected by 2.2kΩ series resistors and back-to-back diode clamps. |
| 3 (IN+) | Noninverting input | Differential input node; same protection as IN−; supports common-mode range beyond rails. |
| 4 (VEE) | Negative supply / ground | Reference for single-supply operation (typically GND); must be bypassed with 100nF capacitor. |
| 5 (SHDN) | Shutdown control input | Active-low logic: <0.3×VCC disables amplifier; >0.7×VCC enables; floating = enabled (but not recommended). |
| 6 (VCC) | Positive supply | Accepts +1.8V to +5.5V; bypass with 100nF capacitor to VEE for stable operation. |
| 7 (NC) | No connect | Internally unconnected; must remain unconnected on PCB (no tie to VCC/VEE). |
| 8 (NC) | No connect | Internally unconnected; must remain unconnected on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Beyond-the-Rails™ input stage | Enables signal acquisition below ground or above VCC (e.g., battery voltage monitoring at terminals), eliminating level-shifting circuitry. |
| Rail-to-rail output swing | Delivers full-scale analog output (e.g., 0–1.8V from 1.8V supply), maximizing ADC utilization and SNR in low-voltage data acquisition. |
| 1µA shutdown mode | Reduces system standby power to nanoampere-level budgets - essential for always-on sensor nodes with infrequent wake cycles. |
| Unity-gain stable with 200pF load | Eliminates need for external compensation when driving ADC input capacitance or long traces, simplifying layout and BOM. |
| No phase reversal on overdrive | Prevents latch-up or erroneous output transitions during input transients (e.g., ESD events or sensor disconnect), improving system robustness. |
Applications
| Strain Gauge Amplifier | Digital Scale Front-End |
|---|---|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from metal foil strain gauges in handheld weighing devices. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with ultra-low input offset and bias current to preserve microvolt-level resolution. Use Value: 200µV VOS and ±2nA IB ensure <0.1% linearity error over 100g–5kg range without calibration; 10µA ICC extends battery life to >1 year. |
Use Scenario: Signal conditioning for load cell outputs in consumer digital kitchen scales powered by two AAA batteries. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op amp configured as inverting amplifier with programmable gain. Use Value: Beyond-the-Rails input accepts bridge excitation-referenced signals; 90kHz GBW supports fast settling (<50µs) for rapid weight updates. |
| Two-Cell Battery Monitor | Portable Medical Sensor Interface |
Use Scenario: Measuring terminal voltage and load current of 2×AA alkaline stack in glucose meters or pulse oximeters. IC Role / Device Role / Timing Role: High-impedance buffer and current-sense amplifier with shutdown control synchronized to measurement cycle. Use Value: VCM down to VEE − 0.2V enables direct high-side sensing; 1µA shutdown cuts quiescent current during sleep, enabling multi-year device lifetime. |
Use Scenario: Conditioning low-amplitude bio-potential signals (e.g., ECG, EMG) in wearable patch monitors using coin-cell power. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer with ultra-low noise (70nV/√Hz) and low power. Use Value: 70nV/√Hz input voltage noise preserves SNR for µV-level signals; 10µA ICC allows continuous sensing for >7 days on CR2032. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision micropower op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4241EUA+ | Identical electrical specs; packaged in 8-pin µMAX® (3mm × 3mm), smaller footprint than SO-8. | Better suited for space-constrained PCBs where thermal mass is lower; µMAX requires tighter layout control for thermal stability. | Select MAX4241EUA+ when board area is premium and reflow profile accommodates µMAX's thinner leadframe. |
| TLV8511IDBVR | Lower VOS (150µV typ), higher ICC (25µA), no shutdown pin; 5-pin SOT-23 package. | Lacks shutdown capability and Beyond-the-Rails input - cannot sense below GND or above VCC without external level shift. | Choose TLV8511IDBVR only if shutdown and extended common-mode range are unnecessary and 15µA extra current is acceptable. |
Compared with MAX4241ESA+, MAX4241EUA+ offers identical performance in a smaller package but demands more precise thermal management, while TLV8511IDBVR trades shutdown and rail-overreach capability for marginally better offset and smaller size - making MAX4241ESA+ the optimal balance for battery-monitoring and sensor front-ends requiring full-rail flexibility.
Availability
MAX4241ESA+ is available at Aetrix Electronics and suitable for portable medical sensors, two-cell battery-powered instrumentation, and low-power industrial IoT edge nodes requiring stable component supply with guaranteed -40°C to +85°C operation.
Supply support for MAX4241ESA+ 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 portable applications.
The MAX4240–MAX4244 family was engineered specifically for ultra-low-power, low-voltage signal conditioning - targeting battery-operated systems where every microamp and millivolt of headroom matters.
FAQ
What is the minimum operating voltage for MAX4241ESA+?
The MAX4241ESA+ is fully specified and guaranteed from +1.8V, but typical operation extends down to +1.5V per characterization data. At +1.5V, parameters such as gain-bandwidth and output swing degrade predictably - design validation at the target voltage is recommended. The MAX4241ESA+ remains functional below 1.8V, though not production-tested there.
Does MAX4241ESA+ support dual-supply operation?
Yes, MAX4241ESA+ operates from dual supplies of ±0.9V to ±2.75V. In dual-supply mode, VCC connects to the positive rail and VEE to the negative rail; SHDN logic thresholds scale with VCC relative to VEE (e.g., VIH = 0.7×(VCC − VEE) + VEE). Input common-mode range becomes (VEE − 0.2V) to (VCC + 0.2V), preserving Beyond-the-Rails capability.
How does the shutdown function behave on MAX4241ESA+?
When SHDN is pulled low (≤0.3×VCC), MAX4241ESA+ reduces supply current to ≤1.5µA and places the output in high-impedance state - no sourcing or sinking. Pulling SHDN high (≥0.7×VCC) enables normal operation. Leaving SHDN floating defaults to enabled, but parasitic leakage may cause unintended shutdown; a 100kΩ pull-up to VCC is recommended for robustness.
Can MAX4241ESA+ drive capacitive loads directly?
MAX4241ESA+ is unity-gain stable with capacitive loads up to 200pF when driving a 100kΩ resistive load. For larger capacitances (e.g., ADC input + trace), add a 100Ω–1kΩ isolation resistor between OUT and CL. This avoids peaking/oscillation but introduces gain error - compensate in feedback network or calibrate out in firmware.
Is MAX4241ESA+ pin-compatible with other op amps in the MAX424x family?
MAX4241ESA+ is pin-compatible with MAX4241EUA+ (same 8-pin configuration), but not with MAX4240 (5-pin SOT23) or MAX4242/43/44 (dual/quad variants with different pinouts). All MAX4241 variants share identical SO-8 and µMAX pin assignments: OUT, IN−, IN+, VEE, SHDN, VCC, NC, NC - ensuring drop-in replacement across packages.
MAX4241ESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- Beyond-the-Rails™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- 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):
- 1.8 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
MAX4241ESA+ FAQ
1.How can I place an order for MAX4241ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4241ESA+ 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 MAX4241ESA+ reliable?
The price and inventory of MAX4241ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4241ESA+ is usually 5 days.
3.What payment methods are accepted for MAX4241ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4241ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4241ESA+?
MAX4241ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4241ESA+ 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 MAX4241ESA+?
For technical support, including MAX4241ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4241ESA+ requirements.
6.How does Aetrix verify that MAX4241ESA+ is sourced from the original manufacturer or authorized distributors?
All MAX4241ESA+ 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 MAX4241ESA+ meets industry standards.
7.What is the process for return or replacement of MAX4241ESA+?
All MAX4241ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4241ESA+, 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 MAX4241ESA+ part is unused and in its original packaging.
Return procedure for MAX4241ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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