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Analog Devices Inc./Maxim Integrated MAX4236AEUA
- Part No.:
- MAX4236AEUA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4236AEUA.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,028
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Product details
Overview
The MAX4236AEUA from Maxim Integrated is a grade-A, unity-gain-stable, rail-to-rail output operational amplifier with ultra-low 20µV (max) input offset voltage at +25°C, 2µV/°C max offset drift, and 1pA input bias current. It operates from +2.4V to +5.5V single supply, delivers 1.7MHz gain-bandwidth, and features shutdown mode reducing quiescent current to 0.1µA - ideal for battery-powered precision sensor front-ends such as strain gauge and thermocouple amplifiers.
For engineers reviewing the MAX4236AEUA datasheet, MAX4236AEUA pinout, MAX4236AEUA application, or MAX4236AEUA equivalent, this page provides verified specifications, µMAX-8 package layout, real-world use cases in electrochemical and piezoelectric sensing, and validated alternative op amps for high-accuracy DC signal conditioning.
Technical Context
The MAX4236AEUA uses a CMOS input stage enabling ground-sensing operation (input common-mode range extends to VEE − 0.15V) and rail-to-rail output swing within 150mV of rails into 1kΩ. Its 120dB typical open-loop gain and 110dB minimum ensure stable closed-loop performance in low-noise, high-impedance configurations.
It integrates a dedicated SHDN pin that forces output into high-impedance state and reduces ICC to ≤0.1µA, with 4µs recovery time. The device is specified across −40°C to +85°C and tested per grade-A limits on offset voltage and drift in µMAX-8 packaging.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.4V to +5.5V - supports direct interface with 3V and 5V logic and ADC reference domains. |
| Input Offset Voltage (Grade A) | ≤20µV at +25°C - enables sub-10ppm accuracy in 1V full-scale instrumentation without trimming. |
| Offset Drift | ≤2µV/°C - ensures <±0.2mV total drift over −40°C to +85°C, critical for unattended industrial sensors. |
| Input Bias Current | 1pA typical - preserves signal integrity in >1GΩ source impedances (e.g., piezoelectric charge amplifiers). |
| Gain-Bandwidth Product | 1.7MHz - sufficient for stable unity-gain buffer and low-frequency filtering up to ~100kHz. |
| Quiescent Current | 350µA normal mode / 0.1µA shutdown - extends battery life in portable instrumentation with duty-cycled operation. |
| Rail-to-Rail Output | Swings within 150mV of VEE and VCC into 1kΩ - maximizes dynamic range when using single-supply ADCs. |
Pinout & Package
MAX4236AEUA is housed in an 8-pin µMAX package (pin-compatible with SO-8), measuring 3mm × 3mm × 0.8mm with exposed pad for thermal enhancement. Pin 1 is marked by a dot; pin numbering follows standard µMAX convention (counterclockwise from top-left corner).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier Output | High-drive, rail-to-rail output node; requires minimal trace length to avoid instability with capacitive loads up to 200pF. |
| 2 (VEE) | Negative Supply / Ground Reference | Connect to system ground in single-supply operation; bypass with 0.1µF capacitor to minimize PSRR degradation. |
| 3 (IN+) | Noninverting Input | Ultra-high-impedance CMOS node (≥1000MΩ); guard ring routing recommended for <1pA leakage paths. |
| 4 (IN−) | Inverting Input | Differential input node; matched to IN+ for optimal CMRR - layout symmetry critical for >80dB rejection. |
| 5 (N.C.) | No Connection | Not internally bonded; leave unconnected and unstubbed to prevent parasitic coupling. |
| 6 (SHDN) | Shutdown Control Input | Active-low logic input (VIH ≥0.7×VCC, VIL ≤0.3×VCC); must not float - tie to VCC or controlled GPIO. |
| 7 (N.C.) | No Connection | Not internally bonded; electrically isolated - no routing or copper pour required. |
| 8 (VCC) | Positive Supply Input | Primary power rail; bypass with 0.1µF ceramic capacitor placed <1mm from pin to suppress high-frequency noise. |
Key Features
| Feature | Design Value |
|---|---|
| Grade-A guaranteed offset | 20µV max at +25°C and ≤2µV/°C drift - eliminates need for external nulling in production calibration. |
| Ground-sensing input | Common-mode range includes VEE − 0.15V - enables direct measurement of signals referenced to ground in single-supply systems. |
| Rail-to-rail output | 150mV headroom into 1kΩ load - preserves >95% of full-scale ADC range without level-shifting circuitry. |
| Shutdown mode | 0.1µA quiescent current with high-Z output - allows multiplexed sensor architectures with zero crosstalk during idle cycles. |
| Capacitive load drive | Stable with up to 200pF - supports direct connection to long PCB traces or ADC input capacitance without isolation resistors. |
Applications
| Strain Gauge Signal Conditioning | Piezoelectric Sensor Charge Amplifier |
|---|---|
|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from metal foil or semiconductor strain gauges in load cells and pressure transducers. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with ultra-low input current to prevent bridge imbalance errors. Use Value: 1pA input bias avoids >0.1% gain error in 10kΩ bridge arms; 20µV offset contributes <0.002% full-scale error at 1V output. |
Use Scenario: Converting high-impedance charge output from accelerometers and vibration sensors into low-impedance voltage signals. IC Role / Device Role / Timing Role: Low-noise, unity-gain charge amplifier with femtoampere input leakage to maximize signal retention time constant. Use Value: 0.2µVp-p (0.1–10Hz) and 1pA bias enable >10-second time constants with 1nF feedback capacitors, preserving low-frequency response. |
| Thermocouple Cold-Junction Compensation | Electrochemical Sensor Interface |
|
Use Scenario: Amplifying µV-level Seebeck voltages from K-type or J-type thermocouples while rejecting millivolt-level cold-junction compensation errors. IC Role / Device Role / Timing Role: High-CMRR (≥80dB), low-drift DC amplifier in the first stage of a thermocouple measurement chain. Use Value: 2µV/°C drift ensures <±0.5°C error over 85°C ambient range; 102dB CMRR rejects common-mode noise from shared sensor grounds. |
Use Scenario: Interfacing amperometric gas sensors (e.g., CO, NO₂) where current output ranges from pA to nA under varying environmental conditions. IC Role / Device Role / Timing Role: Transimpedance amplifier with ultra-low input bias to prevent polarization of working electrodes and maintain sensor linearity. Use Value: 1pA input bias avoids >1% measurement error in 100pA sensor currents; rail-to-rail output accommodates wide dynamic range of sensor outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision, low-input-bias op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDBVR | 17µV max offset (A-grade), 0.1µV/°C drift, 200pA input bias - lower drift but higher input current than MAX4236AEUA. | Better for ultra-stable DC references; less suitable for >1GΩ piezoelectric sources due to 200× higher input bias. | Select OPA333AIDBVR when drift-critical, low-power, rail-to-rail I/O is needed and source impedance <100MΩ. |
| LTC2050CS5#TRMPBF | 5µV max offset, 0.05µV/°C drift, 3pA input bias - superior DC specs but 3.6MHz GBW and no shutdown pin. | Preferred for nanovolt-level measurements (e.g., cryogenic sensors); lacks power-gating capability for battery systems. | Select LTC2050CS5#TRMPBF when ultimate offset stability is required and continuous operation is acceptable. |
Compared with OPA333AIDBVR and LTC2050CS5#TRMPBF, the MAX4236AEUA uniquely balances ultra-low input bias (1pA), grade-A offset control (20µV), integrated shutdown, and µMAX packaging - making it optimal for portable, high-impedance sensor front-ends requiring both precision and power efficiency.
Availability
MAX4236AEUA is available at Aetrix Electronics and suitable for strain gauge interfaces, thermocouple amplifiers, electrochemical sensor front-ends, and battery-powered instrumentation requiring stable component supply across extended temperature ranges.
Supply support for MAX4236AEUA 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 industrial, medical, and communications applications.
The MAX4236/MAX4237 product line targets high-accuracy, low-power sensor signal conditioning - specifically engineered for applications demanding sub-µV offset stability, femtoampere input leakage, and rail-to-rail operation from single 3V/5V supplies.
FAQ
What is the maximum guaranteed input offset voltage for MAX4236AEUA at +25°C?
The MAX4236AEUA is grade-A tested and guaranteed to have an input offset voltage of ≤20µV at +25°C. This limit is 100% production tested per Maxim's specification, unlike grade-B variants which allow up to 50µV. The MAX4236AEUA's tight offset tolerance makes it suitable for applications where calibration steps must be minimized or eliminated.
Does MAX4236AEUA support true single-supply operation with ground-referenced inputs?
Yes. The MAX4236AEUA features ground-sensing input capability: its input common-mode voltage range extends down to VEE − 0.15V. When VEE = 0V (single-supply configuration), the input accepts signals down to −0.15V - enabling direct interfacing with grounded sensors and eliminating the need for level-shifting circuitry in most industrial transducer applications.
What is the shutdown behavior of MAX4236AEUA, and how fast does it recover?
When the SHDN pin is pulled low, the MAX4236AEUA reduces quiescent current to ≤0.1µA and places the output in a high-impedance state. Recovery to full operation occurs within 4µs after SHDN is returned high (RL = 1kΩ). This fast wake-up supports burst-mode sensing in portable instruments without sacrificing precision or power savings.
Can MAX4236AEUA drive a 1000pF load without oscillation?
No. The MAX4236AEUA is characterized for stable operation with capacitive loads up to 200pF. Driving >200pF risks peaking or oscillation due to phase margin reduction. For larger loads (e.g., ADC inputs or long cables), add a small series resistor (10–50Ω) between the MAX4236AEUA output and the load to isolate capacitance while maintaining signal fidelity.
Is the µMAX package of MAX4236AEUA pin-compatible with SO-8 footprints?
Yes - the MAX4236AEUA in µMAX-8 shares identical pinout and function mapping with the SO-8 variant (MAX4236AESA), including pin 1 (OUT), pin 2 (VEE), pin 3 (IN+), pin 4 (IN−), pin 5 (N.C.), pin 6 (SHDN), pin 7 (N.C.), and pin 8 (VCC). Layouts designed for SO-8 can accommodate µMAX-8 with minor land pattern adjustments for body size and thermal pad.
MAX4236AEUA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.3V/µs
- Gain Bandwidth Product:
- 1.7 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 5 µV
- Current - Supply:
- 350µA
- Current - Output / Channel:
- 30 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-uMAX/uSOP
MAX4236AEUA FAQ
1.How can I place an order for MAX4236AEUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4236AEUA 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 MAX4236AEUA reliable?
The price and inventory of MAX4236AEUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4236AEUA is usually 5 days.
3.What payment methods are accepted for MAX4236AEUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4236AEUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4236AEUA?
MAX4236AEUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4236AEUA 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 MAX4236AEUA?
For technical support, including MAX4236AEUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4236AEUA requirements.
6.How does Aetrix verify that MAX4236AEUA is sourced from the original manufacturer or authorized distributors?
All MAX4236AEUA 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 MAX4236AEUA meets industry standards.
7.What is the process for return or replacement of MAX4236AEUA?
All MAX4236AEUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4236AEUA, 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 MAX4236AEUA part is unused and in its original packaging.
Return procedure for MAX4236AEUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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