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Analog Devices Inc./Maxim Integrated MAX4041ESA-T
- Part No.:
- MAX4041ESA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4041ESA-T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,063
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Product details
Overview
The MAX4041ESA-T from Maxim Integrated is a single-channel, micropower, rail-to-rail input/output operational amplifier optimized for ultra-low-power, low-voltage portable systems. It operates from +2.4V to +5.5V, consumes only 10µA supply current per amplifier, features shutdown mode (1µA), delivers 90kHz gain-bandwidth, and swings within 10mV of rails with 100kΩ load - enabling precision signal conditioning in battery-powered sensor interfaces.
For engineers reviewing the MAX4041ESA-T datasheet, MAX4041ESA-T pinout, MAX4041ESA-T application, or MAX4041ESA-T equivalent, key selection criteria include its guaranteed -40°C to +85°C operation, SO-8 package compatibility, shutdown logic threshold referenced to VCC/2, rail-to-rail I/O performance at sub-3V supplies, and suitability for high-impedance sensor front-ends requiring minimal quiescent power.
Technical Context
The MAX4041ESA-T employs a dual-input-stage architecture (NPN + PNP differential pairs) to achieve true rail-to-rail common-mode input range extending from VEE to VCC, with crossover centered at VCC/2. Its output stage uses complementary push-pull circuitry capable of sourcing/sinking current to drive 25kΩ loads while maintaining <60mV rail margin.
It integrates internal 2.2kΩ series input resistors and back-to-back triple-diode clamps for ±1.8V differential input protection. Shutdown control (SHDN pin) forces output into high-impedance state and reduces ICC to <1µA, with enable/disable times of 150µs and 50µs respectively - critical for duty-cycled sensor amplification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.4V to +5.5V single supply - supports direct connection to decaying Li-ion or coin-cell batteries without regulation. |
| Supply Current per Amp | 10µA typical - enables multi-year operation on 100mAh coin cells in wake-sleep sensor nodes. |
| Shutdown Current | <1µA - reduces system standby power by >90% versus active mode, preserving battery life during idle periods. |
| Gain-Bandwidth Product | 90kHz - sufficient for DC–10kHz sensor signal bandwidths (e.g., strain gauges, thermistors) with unity-gain stability up to 200pF. |
| Input Offset Voltage | ±200µV max - ensures ≤0.5mV error in 2.5V full-scale 12-bit ADC interfaces with 100kΩ source impedance. |
| Rail-to-Rail Output Swing | Within 10mV of rails (100kΩ load) - maximizes dynamic range and SNR in low-voltage data acquisition systems. |
| Input Common-Mode Range | VEE to VCC - allows direct sensing of signals referenced to ground or supply rails without level-shifting circuitry. |
Pinout & Package
The MAX4041ESA-T is housed in an 8-pin SO (Small Outline) package, measuring 4.9mm × 6.0mm × 1.75mm, with gull-wing leads and standard JEDEC MS-012AC footprint. Pin 1 is marked with a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Positive supply input - must be bypassed with 100nF capacitor to VEE (GND) for stable operation. |
| 2 | IN− | Inverting input - high-impedance node (±2nA bias current); matched external impedance minimizes offset error. |
| 3 | IN+ | Noninverting input - same bias current behavior as IN−; polarity reversal occurs near VCC/2 common-mode voltage. |
| 4 | VEE | Negative supply - tied to GND for single-supply use; internal substrate connection. |
| 5 | OUT | Amplifier output - enters high-impedance state during shutdown; drives capacitive loads ≤200pF directly. |
| 6 | SHDN | Shutdown control - logic high (≥0.7×VCC) enables operation; logic low (≤0.3×VCC) activates shutdown mode. |
| 7 | N.C. | No connection - not internally bonded; must remain unconnected and floating. |
| 8 | N.C. | No connection - not internally bonded; must remain unconnected and floating. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends from VEE to VCC - eliminates need for input level-shifting in single-supply systems with ground-referenced sensors. |
| Output swing within 10mV of rails | Preserves >99.6% of available signal range at 2.4V supply - critical for maximizing resolution in low-voltage ADCs. |
| Shutdown mode with high-Z output | Reduces total system current to <1µA and isolates amplifier output - prevents loading of downstream circuits during sleep. |
| No phase reversal on overdriven inputs | Ensures predictable output behavior during input transients or fault conditions - improves reliability in unattended sensor nodes. |
| Unity-gain stable with 200pF capacitive load | Supports direct driving of ADC input capacitance or long PCB traces without external isolation resistors. |
Applications
| Strain Gauge Signal Conditioning | Battery-Cell Voltage Monitoring |
|---|---|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from metal foil or semiconductor strain gauges in handheld test equipment. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with rail-to-rail I/O and ultra-low input bias current (±2nA). Use Value: Enables 16-bit resolution measurement using 2.5V reference ADCs without gain error from input offset drift (2µV/°C TCVOS) or bias current mismatch. | Use Scenario: Monitoring individual cell voltages in 2–4 cell Li-ion battery packs for state-of-charge estimation and protection. IC Role / Device Role / Timing Role: High-impedance buffer and level translator between cell terminals and microcontroller ADC inputs. Use Value: Draws only 10µA per channel - extends pack runtime by minimizing parasitic drain; rail-to-rail input accepts 0–4.2V cell range directly. |
| Digital Scale Load Cell Interface | Portable Medical Sensor Front-End |
Use Scenario: Interfacing 1–5mV/V analog output load cells in battery-powered digital kitchen or luggage scales. IC Role / Device Role / Timing Role: Low-noise, micropower signal conditioner with 70nV/√Hz input voltage noise and 90kHz GBW. Use Value: Achieves <10µg resolution at 5kg full scale with 24-bit ΣΔ ADC; shutdown mode cuts power during display-off intervals. | Use Scenario: Amplifying low-amplitude biopotential signals (ECG, EMG) in wearable health monitors powered by CR2032 cells. IC Role / Device Role / Timing Role: First-stage gain block with rail-to-rail I/O, low input offset (±200µV), and no phase reversal during electrode pop transients. Use Value: Maintains signal integrity during patient movement; 10µA supply current enables >12-month operation on single coin cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4041EUA+T | Identical electrical specs; packaged in 8-pin µMAX (3mm × 3mm) instead of SO-8 (4.9mm × 6.0mm). | Preferred for space-constrained PCBs where footprint area is critical; thermal resistance differs (µMAX: 4.1mW/°C derating vs SO: 5.88mW/°C). | Select MAX4041EUA+T when board area is limited and thermal management permits smaller package. |
| TLV2461CDR | Higher supply current (23µA), wider GBW (650kHz), no shutdown function; SO-8 compatible pinout but SHDN pin repurposed as NC. | Suitable for higher-speed, non-battery-critical applications; lacks low-power shutdown capability required for intermittent sensing. | Choose TLV2461CDR only if speed >90kHz is needed and continuous operation is acceptable - not a drop-in replacement for shutdown-dependent designs. |
Compared with MAX4041EUA+T, the MAX4041ESA-T offers identical performance in a larger, more manufacturable SO-8 package with better thermal dissipation; versus TLV2461CDR, it trades bandwidth and cost for 57% lower quiescent current and integrated shutdown - making it superior for energy-harvesting and long-life battery systems.
Availability
The MAX4041ESA-T is available at Aetrix Electronics and suitable for battery-powered medical devices, portable instrumentation, industrial sensor nodes, and consumer electronics requiring stable component supply across extended temperature ranges.
Supply support for MAX4041ESA-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) designs precision analog, mixed-signal, and power management ICs for demanding industrial, medical, and communications applications.
The MAX4040–MAX4044 family was engineered specifically for micropower, rail-to-rail I/O operation in single-supply, battery-constrained systems - targeting sensor signal conditioning, portable instrumentation, and energy-efficient data acquisition.
FAQ
What is the operating temperature range for the MAX4041ESA-T?
The MAX4041ESA-T is fully specified and guaranteed over the extended industrial temperature range of -40°C to +85°C. All electrical parameters - including input offset voltage (±200µV max), supply current (10µA typ), and rail-to-rail output swing - are validated across this range per the datasheet's TA = TMIN to TMAX test conditions.
Does the MAX4041ESA-T have built-in shutdown functionality?
Yes, the MAX4041ESA-T includes a dedicated SHDN pin (Pin 6) that enables low-power shutdown mode. When driven to VEE (GND), it reduces supply current to <1µA per amplifier and places the output in a high-impedance state. The logic thresholds are referenced to VCC/2: VIH ≥ 0.7×VCC enables operation; VIL ≤ 0.3×VCC activates shutdown.
What package type is used for the MAX4041ESA-T?
The MAX4041ESA-T is supplied in an 8-pin SO (Small Outline) package, also designated as SOIC-8 or SO-8, with JEDEC MS-012AC outline. Its dimensions are 4.9mm × 6.0mm × 1.75mm, featuring gull-wing leads and standard surface-mount compatibility for automated assembly.
Can the MAX4041ESA-T drive capacitive loads without oscillation?
Yes, the MAX4041ESA-T is unity-gain stable with capacitive loads up to 200pF when driving resistive loads ≥100kΩ. For heavier capacitive loads (e.g., >200pF or low-impedance ADC inputs), an isolation resistor (RISO) between OUT and CL is recommended to maintain phase margin - as confirmed by the Load Resistor vs. Capacitive Load graph in the datasheet.
How does the rail-to-rail input stage of the MAX4041ESA-T work?
The MAX4041ESA-T uses separate NPN and PNP differential input pairs that operate in parallel, enabling common-mode voltage acceptance from VEE to VCC. Their crossover occurs at VCC/2, resulting in a typical input offset voltage of 200µV. Input bias current changes polarity across this point, so matching source impedances at IN+ and IN− minimizes offset errors caused by bias current flow.
MAX4041ESA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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:
- 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-T FAQ
1.How can I place an order for MAX4041ESA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4041ESA-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 MAX4041ESA-T reliable?
The price and inventory of MAX4041ESA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4041ESA-T is usually 5 days.
3.What payment methods are accepted for MAX4041ESA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4041ESA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4041ESA-T?
MAX4041ESA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4041ESA-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 MAX4041ESA-T?
For technical support, including MAX4041ESA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4041ESA-T requirements.
6.How does Aetrix verify that MAX4041ESA-T is sourced from the original manufacturer or authorized distributors?
All MAX4041ESA-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 MAX4041ESA-T meets industry standards.
7.What is the process for return or replacement of MAX4041ESA-T?
All MAX4041ESA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4041ESA-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 MAX4041ESA-T part is unused and in its original packaging.
Return procedure for MAX4041ESA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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