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Analog Devices Inc./Maxim Integrated MAX4040EUK-G103
- Part No.:
- MAX4040EUK-G103
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4040EUK-G103.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,399
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Product details
Overview
The MAX4040EUK-G103 from Maxim Integrated is a single-channel, micropower, rail-to-rail input/output operational amplifier designed for ultra-low-power signal conditioning in battery-powered systems. It operates from a single +2.4V to +5.5V supply, consumes only 10µA quiescent current per amplifier, delivers 90kHz gain-bandwidth product, and achieves rail-to-rail output swing within 10mV of both rails with a 100kΩ load - enabling full utilization of low-voltage supply headroom in portable sensor interfaces.
For engineers reviewing the MAX4040EUK-G103 datasheet, MAX4040EUK-G103 pinout, MAX4040EUK-G103 application, or MAX4040EUK-G103 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 PCB layouts in wearable and IoT edge nodes.
Technical Context
The MAX4040EUK-G103 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) and eliminate phase reversal during overdrive. Its output stage is optimized for low-voltage swing capability, delivering ±240µA source/sink current while maintaining linearity near the rails.
It features no internal shutdown function (unlike MAX4041/MAX4043), operates exclusively in active mode when powered, and exhibits 85dB power-supply rejection ratio - allowing direct connection to decaying battery rails without additional regulation in precision analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.4V to +5.5V single supply - supports direct battery operation from one to three alkaline or Li-ion cells without LDO. |
| Quiescent Current | 10µA per amplifier - enables multi-year battery life in always-on sensor nodes drawing <100nA average system current. |
| Gain-Bandwidth Product | 90kHz - sufficient for DC-coupled strain gauge, thermistor, and pH sensor amplification with stable closed-loop response. |
| Input Offset Voltage | ±200µV (typ) - ensures sub-0.1% measurement error in 12-bit ADC interfacing with 2.5V reference. |
| Rail-to-Rail Output Swing | Within 10mV of VEE/VCC at 100kΩ load - maximizes dynamic range for low-voltage ADCs and comparators. |
| Capacitive Load Stability | Stable with ≤200pF - eliminates need for isolation resistors in most PCB trace and filter capacitor configurations. |
| Input Common-Mode Range | VEE to VCC - allows direct sensing of signals referenced to ground or supply rail in single-supply systems. |
Pinout & Package
The MAX4040EUK-G103 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; device orientation follows standard SOT23 top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VEE | Negative supply terminal | Tied to ground in single-supply operation; defines lower rail for input common-mode and output swing limits. |
| 2 - IN− | Inverting input | Differential input node; high-impedance (45MΩ typ) with internal 2.2kΩ series protection resistors. |
| 3 - IN+ | Noninverting input | Differential input node; identical protection and impedance as IN−; crossover region centered at VCC/2. |
| 4 - OUT | Amplifier output | Rail-to-rail voltage source/sink; high-impedance state not supported (no shutdown pin). |
| 5 - VCC | Positive supply terminal | Accepts +2.4V to +5.5V; requires 100nF bypass capacitor to VEE for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends from VEE to VCC - enables direct interface with sensors whose output spans full supply range (e.g., bridge-based pressure transducers). |
| No phase reversal on overdrive | Guaranteed behavior across full temperature range - prevents latch-up or erroneous output transitions in comparator-mode use cases. |
| 200µV input offset voltage (typ) | Minimizes zero-error in precision DC amplification - critical for digital scale and medical sensor front-ends requiring <0.05% accuracy. |
| Unity-gain stable with 200pF load | Eliminates external compensation in most PCB layouts - reduces BOM count and layout complexity for compact designs. |
| 70nV/√Hz input voltage noise density | Supports low-noise amplification of µV-level signals (e.g., thermocouples) without degrading SNR in 10Hz–1kHz bandwidth. |
Applications
| Battery-Powered Sensor Nodes | Portable Medical Devices |
|---|---|
Use Scenario: Continuous monitoring of skin temperature or pulse oximetry photodiode current in wearable patches. IC Role / Device Role / Timing Role: Precision DC-coupled transimpedance and buffer amplifier for low-current, low-voltage analog signals. Use Value: 10µA supply current extends coin-cell battery life beyond 2 years; rail-to-rail I/O preserves full ADC input range at 1.8V supply. | Use Scenario: Signal conditioning for disposable glucose test strip electrochemical sensors. IC Role / Device Role / Timing Role: Low-offset, low-drift amplifier for microampere-level current measurement with 12-bit SAR ADC. Use Value: ±200µV VOS and 2µV/°C drift ensure <0.5% glucose concentration error across -20°C to +50°C operating range. |
| Digital Weight Scales | Industrial Handheld Testers |
Use Scenario: Amplifying mV-level output from 350Ω strain gauge bridges in pocket-sized weighing tools. IC Role / Device Role / Timing Role: Instrumentation-grade signal conditioner with matched input impedance and low bias current. Use Value: 45MΩ input resistance minimizes loading error on high-Z bridge outputs; 90kHz GBW supports fast settling for rapid weight capture. | Use Scenario: Front-end amplification for multimeter input channels measuring µA–mA currents and mV–V voltages. IC Role / Device Role / Timing Role: Reconfigurable gain block supporting autoranging and auto-zero functions. Use Value: Single-supply +2.4V operation enables integration into 3V-powered handheld platforms; 85dB PSRR rejects switching regulator noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4040EUK-T | Identical electrical specs and SOT23-5 package; differs only in tape-and-reel packaging (G103 = 3,000-unit reel, T = 250-unit reel). | No functional difference; suitable for same PCB footprints and thermal profiles. | Select MAX4040EUK-G103 for high-volume automated assembly; MAX4040EUK-T for prototyping or low-MOQ evaluation. |
| TLV851DBVR | Lower 500nA IQ, but only 12kHz GBW and ±3mV VOS; SOT23-5 package with different pinout (IN+ on pin 3, IN− on pin 2, VCC on pin 5, GND on pin 2). | Not pin-compatible; requires PCB redesign; better for nano-power sleep modes, worse for bandwidth-critical sensor buffering. | Choose TLV851DBVR only if sub-1µA standby current dominates design priority over bandwidth and offset performance. |
Compared with MAX4040EUK-T, the MAX4040EUK-G103 offers identical performance in a higher-volume reel format; versus TLV851DBVR, it provides 7.5× higher gain-bandwidth and 15× lower offset voltage at the cost of 20× higher quiescent current - making it optimal for precision, battery-operated signal chains where response speed and accuracy outweigh ultra-low-IQ requirements.
Availability
The MAX4040EUK-G103 is available at Aetrix Electronics and suitable for battery-powered sensor nodes, portable medical devices, digital weight scales, and industrial handheld testers requiring stable component supply with guaranteed -40°C to +85°C operation and long-term production continuity.
Supply support for MAX4040EUK-G103 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 MAX4040EUK-G103 belongs to the MAX4040–MAX4044 micropower rail-to-rail op amp family, engineered specifically for ultra-low-power, low-voltage signal conditioning in portable and energy-harvesting systems where supply headroom is constrained.
FAQ
Does the MAX4040EUK-G103 include a shutdown pin?
No, the MAX4040EUK-G103 does not feature a shutdown pin. It is the single-amplifier variant without enable/disable control - unlike the MAX4041 and MAX4043 which integrate SHDN functionality. The MAX4040EUK-G103 remains continuously active when powered; power gating must be implemented externally via supply switching. All electrical specifications assume continuous operation.
What is the maximum capacitive load the MAX4040EUK-G103 can drive without oscillation?
According to the official Maxim datasheet, the MAX4040EUK-G103 is unity-gain stable with capacitive loads up to 200pF under all operating conditions. This includes PCB trace capacitance, filter capacitors, and ADC input capacitance. Driving >200pF requires an isolation resistor (e.g., 100Ω–1kΩ) between the MAX4040EUK-G103 output and the load to maintain phase margin.
Can the MAX4040EUK-G103 operate from a 1.8V supply?
No, the MAX4040EUK-G103 has a minimum specified supply voltage of +2.4V. Operation below 2.4V is not characterized or guaranteed - parameters such as input offset voltage, gain-bandwidth, and output swing degrade outside the +2.4V to +5.5V range. For 1.8V systems, consider alternatives like the MAX44260 or ADA4505-1, which are explicitly rated down to 1.8V.
Is the MAX4040EUK-G103 pin-compatible with other op amps in the SOT23-5 package?
The MAX4040EUK-G103 uses a nonstandard SOT23-5 pinout: VEE (pin 1), IN− (pin 2), IN+ (pin 3), OUT (pin 4), VCC (pin 5). This differs from industry-standard configurations (e.g., MCP6001, LMV321) where VDD is typically pin 5 and GND is pin 2. Direct replacement requires PCB redesign; verify pin mapping before substitution.
What is the typical input bias current of the MAX4040EUK-G103 at room temperature?
The typical input bias current of the MAX4040EUK-G103 is ±2nA at TA = +25°C, with a maximum of ±10nA over the full -40°C to +85°C temperature range. This low bias current minimizes voltage errors caused by source impedance mismatches - especially important when interfacing with high-impedance sensors like pH electrodes or piezoelectric elements.
MAX4040EUK-G103 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- 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):
- 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-G103 FAQ
1.How can I place an order for MAX4040EUK-G103 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4040EUK-G103 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-G103 reliable?
The price and inventory of MAX4040EUK-G103 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4040EUK-G103 is usually 5 days.
3.What payment methods are accepted for MAX4040EUK-G103?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4040EUK-G103 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4040EUK-G103?
MAX4040EUK-G103 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4040EUK-G103 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-G103?
For technical support, including MAX4040EUK-G103 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4040EUK-G103 requirements.
6.How does Aetrix verify that MAX4040EUK-G103 is sourced from the original manufacturer or authorized distributors?
All MAX4040EUK-G103 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-G103 meets industry standards.
7.What is the process for return or replacement of MAX4040EUK-G103?
All MAX4040EUK-G103 units undergo pre-shipment inspection (PSI). If there is an issue with MAX4040EUK-G103, 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-G103 part is unused and in its original packaging.
Return procedure for MAX4040EUK-G103:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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