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Analog Devices Inc./Maxim Integrated MAX4241EUA-T
- Part No.:
- MAX4241EUA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4241EUA-T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,153
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Product details
Overview
MAX4241EUA-T 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 and consuming only 10µA per amplifier. It features 200µV input offset voltage, 90kHz gain-bandwidth product, shutdown mode (1µA), and is specified over –40°C to +85°C - ideal for precision sensor amplification in two-cell alkaline or lithium-powered portable systems.
For engineers reviewing the MAX4241EUA-T datasheet, MAX4241EUA-T pinout, MAX4241EUA-T application, or MAX4241EUA-T equivalent, key selection criteria include ultra-low supply current, sub-2V operation capability, shutdown-controlled high-impedance output, input common-mode range extending 200mV beyond rails, and guaranteed capacitive-load stability up to 200pF.
Technical Context
The MAX4241EUA-T employs a dual-input-stage architecture combining NPN and PNP differential pairs to achieve a common-mode input range from VEE − 0.2V to VCC + 0.2V. This enables full utilization of the supply voltage for signal swing without phase reversal on overdriven inputs.
Its rail-to-rail output stage delivers ±240µA sourcing/sinking capability at +1.8V and drives 10kΩ loads while swinging within 10mV of rails (typical, RL = 100kΩ). Unity-gain stability extends to 200pF, and internal protection includes 2.2kΩ series resistors and back-to-back diode clamps across inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V single supply - supports direct operation from aging two-cell alkaline (down to 1.8V) or Li-ion (3.0–2.7V) batteries. |
| Supply Current | 10µA per amplifier at +1.8V - enables >200,000 hours of operation on two AA alkaline cells in active mode. |
| Shutdown Current | <1.5µA (typ.) - reduces power by >90% and forces output to high-impedance state for system-level power gating. |
| Input Offset Voltage | ±1.2mV (max, –40°C to +85°C) - ensures <0.1% error in 1V-range sensor interfaces without trimming. |
| Gain-Bandwidth Product | 90kHz - sufficient for DC-coupled strain gauge, thermistor, and digital scale front-end amplification. |
| Input Common-Mode Range | VEE − 0.2V to VCC + 0.2V - allows direct sensing of signals referenced to ground or VCC in single-supply systems. |
| Rail-to-Rail Output Swing | Within 10mV of rails (RL = 100kΩ) - maximizes dynamic range for ADC input stages powered from same low-voltage rail. |
Pinout & Package
MAX4241EUA-T is housed in an 8-pin µMAX® package (3mm × 3mm, 0.8mm height), pin-compatible with industry-standard SO-8 but with 50% smaller footprint and thermal performance optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail voltage swing; high-impedance in shutdown mode. |
| 2 (IN−) | Inverting input | Differential input node with 200mV beyond-rail common-mode range; protected by 2.2kΩ series resistor and diode clamp. |
| 3 (IN+) | Noninverting input | Differential input node with identical beyond-rail range and protection as IN−. |
| 4 (VEE) | Negative supply / ground | Reference terminal for single-supply operation (typically GND); must be bypassed with 100nF capacitor. |
| 5 (SHDN) | Shutdown control input | Active-low logic input; pulls low to enter 1µA shutdown; VIH = 0.7×VCC, VIL = 0.3×VCC. |
| 6 (NC) | No connect | Internally unused; must remain unconnected per datasheet. |
| 7 (VCC) | Positive supply | Accepts +1.8V to +5.5V; PSRR = 73dB (min) enables direct battery connection without regulation. |
| 8 (NC) | No connect | Internally unused; must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Beyond-the-Rails™ input stage | Enables direct interfacing to sensors or signals at or beyond supply rails - eliminates level-shifting circuitry in battery-powered data loggers. |
| Rail-to-rail output swing | Delivers full-scale output into 100kΩ load within 10mV of VCC/VEE - preserves SNR when driving 12-bit SAR ADCs from same low-voltage rail. |
| 1µA shutdown mode | Reduces quiescent current by >90% while disabling amplifier and tri-stating output - critical for wake-on-event architectures in wearables. |
| Unity-gain stable to 200pF | Eliminates need for external compensation when driving long PCB traces, EMI filters, or ADC input capacitance - simplifies layout in compact modules. |
| Low input bias current (±6nA typ.) | Minimizes voltage error across high-impedance sources like pH electrodes or piezoresistive sensors - avoids mandatory guard traces or active guarding. |
Applications
| Digital Scale Front-End | Strain Gauge Signal Conditioning |
|---|---|
|
Use Scenario: Amplifying mV-level bridge outputs from load cells in handheld digital scales powered by two AA batteries. IC Role / Device Role / Timing Role: Precision instrumentation amplifier with gain-setting feedback network; operates continuously during weighing. Use Value: 200µV offset and 10µA supply current enable 0.05% accuracy and >1-year battery life without recharge or replacement. |
Use Scenario: Low-power signal conditioning for strain gauges in structural health monitoring nodes deployed in remote locations. IC Role / Device Role / Timing Role: Single-supply transducer amplifier with rail-to-rail output feeding a 12-bit ADC; activated intermittently via microcontroller. Use Value: Shutdown mode reduces average current to <100nA between readings, extending 10-year deployment on primary lithium cells. |
| Portable Medical Sensor Interface | Two-Cell Battery Voltage Monitor |
|
Use Scenario: Amplifying low-amplitude biopotential signals (ECG, EMG) in disposable wearable patches. IC Role / Device Role / Timing Role: First-stage gain block with Beyond-the-Rails inputs accepting electrode offsets up to ±200mV relative to battery ground. Use Value: Eliminates need for AC coupling or offset nulling circuitry, reducing component count and board area in ultra-thin form factors. |
Use Scenario: Monitoring end-of-life voltage drop across two-series alkaline cells in smart remotes or IoT sensors. IC Role / Device Role / Timing Role: Comparator-like function using open-loop configuration to trigger low-battery alert when VBAT falls below 1.8V threshold. Use Value: Guaranteed operation down to +1.8V and 1µA shutdown allow reliable detection at battery exhaustion without auxiliary LDO or supervisor IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4241ESA | Same electrical specs, but in 8-pin SO package (5.0mm × 4.0mm vs. µMAX's 3.0mm × 3.0mm). | Preferred where SO-8 footprint is standardized or thermal mass improves stability under variable ambient conditions. | Select MAX4241ESA for legacy board compatibility or higher power dissipation margin; choose MAX4241EUA-T for space-constrained portable designs. |
| TLV8511IDBVR | Lower GBW (5.5kHz), higher supply current (490nA), no shutdown pin; rail-to-rail I/O but no Beyond-the-Rails input range. | Suitable for non-critical, cost-sensitive applications where input signals stay within rails and bandwidth <10kHz suffices. | Choose TLV8511IDBVR only if board area is unconstrained, shutdown is unnecessary, and input common-mode stays strictly between rails. |
Compared with MAX4241ESA and TLV8511IDBVR, the MAX4241EUA-T uniquely combines ultra-small µMAX packaging, true beyond-the-rails input operation, and sub-2V guaranteed functionality - making it irreplaceable for miniaturized, battery-extending sensor front-ends demanding full-rail signal capture.
Availability
MAX4241EUA-T is available at Aetrix Electronics and suitable for portable medical devices, battery-powered industrial sensors, and handheld test equipment requiring stable component supply with long-term lifecycle assurance.
Supply support for MAX4241EUA-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) is a leader in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and consumer applications.
The MAX4240–MAX4244 family was designed specifically for ultra-low-power, single-supply precision signal conditioning in portable and energy-harvesting systems - prioritizing sub-2V operation, nanowatt shutdown, and rail-exploiting input/output architecture.
FAQ
What is the minimum operating voltage guaranteed for the MAX4241EUA-T?
The MAX4241EUA-T is fully specified and guaranteed to operate from +1.8V to +5.5V on a single supply. While typical operation extends down to +1.5V, design margins should rely on the guaranteed 1.8V minimum. This makes the MAX4241EUA-T suitable for direct connection to aging two-cell alkaline batteries without regulation.
Does the MAX4241EUA-T have true Beyond-the-Rails™ input capability, and what does that mean in practice?
Yes - the MAX4241EUA-T's input common-mode range extends from VEE − 0.2V to VCC + 0.2V. In practice, this means it can accurately amplify signals referenced to ground (0V) or to VCC (e.g., 1.8V) in single-supply systems without clipping or phase reversal - eliminating level-shifters in sensor interfaces like pH probes or bridge circuits.
How does the shutdown feature of the MAX4241EUA-T behave, and what is its impact on the output?
When the SHDN pin is pulled low (≤0.3×VCC), the MAX4241EUA-T enters shutdown mode, reducing supply current to <1.5µA and forcing the output into a high-impedance (tri-state) condition. This allows safe multiplexing or isolation of the output node in multi-channel systems without loading downstream circuitry.
Can the MAX4241EUA-T drive capacitive loads, and what is the maximum stable value?
Yes - the MAX4241EUA-T is unity-gain stable with capacitive loads up to 200pF, as verified in the datasheet's Load Resistor vs. Capacitive Load graph. For larger loads (e.g., ADC input capacitance + PCB trace), a small isolation resistor (e.g., 100Ω–1kΩ) between output and load maintains stability, though it introduces minor gain error.
What is the typical input offset voltage drift over temperature for the MAX4241EUA-T?
The MAX4241EUA-T has a guaranteed input offset voltage drift of 2µV/°C (max) over the –40°C to +85°C range. At room temperature, typical VOS is 200µV, meaning total drift across the full temperature range remains under ±170µV - supporting precision DC-coupled applications like digital weight scales without calibration.
MAX4241EUA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- Beyond-the-Rails™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 250 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-uMAX/uSOP
MAX4241EUA-T FAQ
1.How can I place an order for MAX4241EUA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4241EUA-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 MAX4241EUA-T reliable?
The price and inventory of MAX4241EUA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4241EUA-T is usually 5 days.
3.What payment methods are accepted for MAX4241EUA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4241EUA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4241EUA-T?
MAX4241EUA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4241EUA-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 MAX4241EUA-T?
For technical support, including MAX4241EUA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4241EUA-T requirements.
6.How does Aetrix verify that MAX4241EUA-T is sourced from the original manufacturer or authorized distributors?
All MAX4241EUA-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 MAX4241EUA-T meets industry standards.
7.What is the process for return or replacement of MAX4241EUA-T?
All MAX4241EUA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4241EUA-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 MAX4241EUA-T part is unused and in its original packaging.
Return procedure for MAX4241EUA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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