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Analog Devices Inc./Maxim Integrated MAX4040EUK-T
- Part No.:
- MAX4040EUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4040EUK-T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,001
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Product details
Overview
The MAX4040EUK-T from Maxim Integrated is a single-channel, micropower, rail-to-rail input/output operational amplifier optimized for ultra-low-power battery-powered systems. It operates from +2.4V to +5.5V single supply, draws only 10µA supply current, delivers 90kHz gain-bandwidth product, and achieves rail-to-rail output swing within 10mV of both rails with 100kΩ load - enabling full utilization of low-voltage supply headroom in precision sensor signal conditioning.
For engineers reviewing the MAX4040EUK-T datasheet, MAX4040EUK-T pinout, MAX4040EUK-T application, or MAX4040EUK-T equivalent, key selection criteria include its guaranteed -40°C to +85°C operation, 200µV input offset voltage, unity-gain stability with up to 200pF capacitive loads, and SOT23-5 package compatibility with space-constrained portable designs.
Technical Context
The MAX4040EUK-T employs a dual-input-stage architecture combining NPN and PNP differential pairs to achieve true rail-to-rail common-mode input range (VEE to VCC), with crossover centered at mid-supply. Its output stage is designed as a complementary current source/sink capable of driving 25kΩ loads while maintaining ≤60mV rail margin.
It features no phase reversal under overdriven inputs, supports direct connection to decaying battery supplies via 85dB PSRR, and exhibits stable small-signal transient response without external compensation - validated across temperature and supply voltage extremes per its extended industrial grade specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.4V to +5.5V single supply - enables direct operation from 2-cell alkaline or Li-ion battery stacks without regulation. |
| Supply Current per Amp | 10µA typical - extends battery life in always-on sensor nodes and wearable devices. |
| Gain-Bandwidth Product | 90kHz - sufficient for DC-coupled strain gauge, thermistor, and RTD amplification with adequate phase margin. |
| Input Offset Voltage | ±200µV max - ensures <0.5% error in 100mV full-scale sensor outputs without trimming. |
| Output Swing (100kΩ) | Within 10mV of VEE and VCC - maximizes dynamic range in 3.3V or lower systems. |
| Input Common-Mode Range | VEE to VCC - allows direct sensing of signals referenced to ground or supply rails. |
| Capacitive Load Stability | Stable with ≤200pF - eliminates need for isolation resistors in most PCB trace and filter capacitor scenarios. |
Pinout & Package
The MAX4040EUK-T is housed in a 5-pin SOT23-5 surface-mount package with exposed pad (non-electrical), footprint compatible with JEDEC MO-178AA. Pin 1 is marked with a dot or notch orientation indicator.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | High-impedance during power-up; rail-to-rail swing; no phase reversal on overdrive. |
| 2 (IN−) | Inverting input | Differential pair node; protected by 2.2kΩ series resistors and back-to-back diodes. |
| 3 (IN+) | Noninverting input | Differential pair node; matched impedance critical to minimize bias-current-induced offset. |
| 4 (VEE) | Negative supply | Tied to GND in single-supply mode; defines lower rail for input/output swing and biasing. |
| 5 (VCC) | Positive supply | Accepts +2.4V to +5.5V; bypassing with 100nF to VEE required for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O with 10mV rail margin | Enables full use of 2.4V–5.5V supply range in unipolar sensor interfaces without level-shifting. |
| 200µV input offset voltage | Reduces calibration burden in millivolt-level transducer applications such as load cells and thermopiles. |
| No phase reversal on overdrive | Prevents latch-up or erroneous output states when input exceeds common-mode range - critical in comparator-mode use. |
| Unity-gain stable to 200pF | Supports direct connection to ADC input filters, long traces, or EMI suppression caps without destabilization. |
| 85dB power-supply rejection | Allows direct battery supply connection without LDO, simplifying BOM and extending runtime in energy-harvesting systems. |
Applications
| Strain Gauge Signal Conditioning | Battery-Operated Digital Scale |
|---|---|
Use Scenario: Amplifying mV-level Wheatstone bridge output from metal foil strain gauges in handheld weighing devices. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier with rail-to-rail output driving 12-bit SAR ADC reference range. Use Value: 10µA quiescent current enables multi-year battery life; 200µV offset avoids zero-point drift calibration; 90kHz GBW supports fast settling after mechanical loading. | Use Scenario: Low-power analog front-end for portable digital kitchen or medical scales powered by two AA batteries. IC Role / Device Role / Timing Role: Single-supply transducer amplifier interfacing load cell to microcontroller's internal ADC. Use Value: +2.4V minimum supply allows operation down to 1.2V/cell; rail-to-rail I/O captures full bridge differential swing; 10mV rail margin preserves resolution at 3.3V system rail. |
| Portable Medical Sensor Node | Low-Voltage PDA Front-End |
Use Scenario: Signal conditioning for disposable ECG or pulse oximetry sensors in Bluetooth-enabled patient monitors. IC Role / Device Role / Timing Role: Micropower biopotential amplifier with high CMRR and low noise for AC-coupled front-end stages. Use Value: 70nV/√Hz input voltage noise meets clinical SNR requirements; 10µA ICC enables >1-month runtime on coin cell; shutdown not required due to single-amp topology. | Use Scenario: Analog interface for ambient light or touch-screen controller in legacy PDAs with tight board area constraints. IC Role / Device Role / Timing Role: General-purpose rail-to-rail op amp for photodiode TIA feedback or resistive touch voltage divider buffering. Use Value: SOT23-5 footprint saves PCB real estate; 90kHz bandwidth suffices for slow-varying environmental signals; 2.4V operation supports aging battery voltage sag. |
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 |
|---|---|---|---|
| MCP6001T-E/OT | Higher 100µA supply current; 1MHz GBW; 7mV max offset; SOT23-5 package | Better speed but 10× higher power draw - unsuitable for multi-year battery life targets | Select only if bandwidth >100kHz is mandatory and power budget allows ≥100µA per channel |
| TSV611ILT | 36µA supply current; 150kHz GBW; 1.5mV max offset; rail-to-rail I/O; SOT23-5 | Lower offset drift but higher current - trades precision for moderate power increase | Prefer when temperature-stable offset (<2µV/°C) is prioritized over sub-10µA operation |
Compared with MCP6001T-E/OT and TSV611ILT, the MAX4040EUK-T uniquely delivers 10µA supply current with 200µV offset and 90kHz GBW in SOT23-5 - making it the only option meeting strict multi-year battery life and sub-millivolt accuracy requirements simultaneously.
Availability
The MAX4040EUK-T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered weighing equipment, and low-voltage industrial data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4040EUK-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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, communications, and consumer markets.
The MAX4040EUK-T belongs to the MAX4040–MAX4044 micropower rail-to-rail op amp family, engineered specifically for ultra-low-power, low-voltage precision signal conditioning in portable and energy-constrained systems.
FAQ
What is the operating temperature range specified for the MAX4040EUK-T?
The MAX4040EUK-T is fully specified and guaranteed over the extended industrial temperature range of -40°C to +85°C. All electrical parameters - including supply current, input offset voltage, gain-bandwidth product, and output swing - are tested and warranted across this full range, ensuring reliable performance in outdoor, automotive cabin, and industrial environments where thermal cycling occurs.
Does the MAX4040EUK-T include a shutdown feature?
No, the MAX4040EUK-T does not include a shutdown pin or function. Shutdown capability is exclusive to the MAX4041 and MAX4043 variants in the same family. The MAX4040EUK-T is a single-amplifier device in SOT23-5 packaging with fixed operation - it draws 10µA continuously when powered and has no enable/disable control line.
Can the MAX4040EUK-T drive a 10kΩ load rail-to-rail?
Yes, the MAX4040EUK-T can drive a 10kΩ load rail-to-rail, though with reduced margin: typical output swing is within 60mV of each rail under 25kΩ load, and remains within ~100mV at 10kΩ per the load-driving capability curves in the datasheet. For applications requiring <20mV rail margin at 10kΩ, verify actual performance under worst-case VCC and temperature conditions.
Is the MAX4040EUK-T unity-gain stable with capacitive loads?
Yes, the MAX4040EUK-T is unity-gain stable with capacitive loads up to 200pF, as explicitly confirmed in the datasheet's Electrical Characteristics table and Typical Operating Characteristics (Load Resistor vs. Capacitive Load graph). No external isolation resistor is needed for PCB traces, ADC input filters, or standard EMI suppression caps within this limit.
What is the input bias current behavior of the MAX4040EUK-T across common-mode voltage?
The MAX4040EUK-T exhibits polarity-reversing input bias current due to its dual NPN/PNP input stage: bias current flows into both inputs near mid-supply but reverses direction as common-mode voltage approaches either rail. At VCM = 0V (VEE), IB ≈ +2nA; at VCM = VCC, IB ≈ –2nA. Matching source impedances at IN+ and IN– minimizes offset error caused by this effect.
MAX4040EUK-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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):
- 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:
- SOT-23-5
MAX4040EUK-T FAQ
1.How can I place an order for MAX4040EUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4040EUK-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 MAX4040EUK-T reliable?
The price and inventory of MAX4040EUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4040EUK-T is usually 5 days.
3.What payment methods are accepted for MAX4040EUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4040EUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4040EUK-T?
MAX4040EUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4040EUK-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 MAX4040EUK-T?
For technical support, including MAX4040EUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4040EUK-T requirements.
6.How does Aetrix verify that MAX4040EUK-T is sourced from the original manufacturer or authorized distributors?
All MAX4040EUK-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 MAX4040EUK-T meets industry standards.
7.What is the process for return or replacement of MAX4040EUK-T?
All MAX4040EUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4040EUK-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 MAX4040EUK-T part is unused and in its original packaging.
Return procedure for MAX4040EUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4040EUK-T Tags
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