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Analog Devices Inc./Maxim Integrated MAX4236AESA
- Part No.:
- MAX4236AESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4236AESA.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,427
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Product details
Overview
The MAX4236AESA 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 thermocouple or electrochemical amplifiers.
For engineers reviewing the MAX4236AESA datasheet, MAX4236AESA pinout, MAX4236AESA application, or MAX4236AESA equivalent, this page provides verified electrical specifications, SO-8 package terminal mapping, real-world use cases in low-drift instrumentation, and validated alternative options for high-accuracy analog signal conditioning.
Technical Context
The MAX4236AESA 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 DC precision across temperature.
It integrates a dedicated SHDN pin that forces output into high-impedance state and reduces ICC to ≤0.1µA in shutdown mode, with 4µs recovery time. The device is specified for −40°C to +85°C and tested per A-grade limits on offset voltage and drift in SO-8 packaging.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 20µV (max) at +25°C - enables sub-0.01% error in mV-level sensor signal amplification without trimming. |
| Offset Voltage Drift | 2µV/°C (max) - ensures <±0.2mV total drift over −40°C to +85°C ambient, critical for uncalibrated field instruments. |
| Input Bias Current | 1pA (typ) - supports >100GΩ source impedances in piezoelectric or electrochemical sensor interfaces without signal loss. |
| Gain-Bandwidth Product | 1.7MHz - sufficient for stable unity-gain buffering of DC-coupled signals up to ~100kHz with minimal phase margin degradation. |
| Rail-to-Rail Output Swing | Within 150mV of VCC/VEE into 1kΩ - maximizes dynamic range in +3V/+5V single-supply systems, preserving >94% of full-scale output. |
| Quiescent Supply Current | 350µA (typ) in active mode; 0.1µA in shutdown - extends battery life in portable instrumentation with periodic wake-up cycles. |
| Capacitive Load Drive | Stable with up to 200pF - allows direct driving of ADC input capacitors or long PCB traces without external isolation. |
Pinout & Package
MAX4236AESA is supplied in an 8-pin SO (SOIC-N) package with standard 150mil width and 1.27mm pitch. Pin 1 is marked by a beveled corner or dot; pins are numbered counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output node - rail-to-rail capable, high-impedance in shutdown mode when SHDN = low. |
| 2 | IN− | Inverting input - high-impedance CMOS node; sensitive to stray capacitance; requires guarded layout in high-Z applications. |
| 3 | IN+ | Noninverting input - matched to IN− for optimal CMRR; referenced to system ground or bias network in single-supply designs. |
| 4 | VEE | Negative supply pin - connect to GND in single-supply operation; bypass with 0.1µF ceramic capacitor close to pin. |
| 5 | N.C. | No internal connection - leave unconnected; not used for thermal pad or ESD protection. |
| 6 | VCC | Positive supply input - operate from +2.4V to +5.5V; bypass with 0.1µF ceramic capacitor near pin to suppress PSRR degradation. |
| 7 | SHDN | Active-low shutdown control - logic low (≤0.3×VCC) disables amplifier and places OUT in high-Z; must not float. |
| 8 | N.C. | No internal connection - electrically isolated; no routing or grounding required. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low offset voltage grade A | 20µV max at +25°C - eliminates need for manual nulling or digital calibration in factory-set medical or industrial sensors. |
| Ground-sensing input stage | Input common-mode range includes VEE − 0.15V - enables direct interfacing to transducers referenced below ground (e.g., load cells with negative common-mode). |
| Shutdown mode with high-Z output | 0.1µA quiescent current + tri-state output - permits multiplexed sensor architectures where unused channels must not load shared buses or reference nodes. |
| Single-supply rail-to-rail output | Swings within 150mV of VCC and VEE into 1kΩ - preserves full-scale resolution when driving SAR or delta-sigma ADCs powered from same supply. |
| Low-frequency noise performance | 0.2µVP-P (0.1Hz–10Hz) - minimizes baseline wander in DC-coupled biopotential or strain gauge measurements requiring >16-bit effective resolution. |
Applications
| Strain Gauge Signal Conditioning | Thermocouple Amplifier Front-End |
|---|---|
Use Scenario: Amplifying µV-level differential output from a Wheatstone bridge under mechanical stress, with minimal self-heating and long-term drift. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier core - configured as noninverting or difference amplifier with matched external resistors. Use Value: 1pA input bias current prevents bridge imbalance errors; 20µV offset ensures <0.02% full-scale error at 100mV bridge output. |
Use Scenario: Cold-junction compensation and linearization of Type-K thermocouple outputs spanning −200°C to +1350°C in industrial ovens or HVAC systems. IC Role / Device Role / Timing Role: Low-drift, low-noise preamplifier stage before cold-junction sensor and ADC digitization. Use Value: 2µV/°C drift contributes <±0.25°C error over full temperature range - meets Class 1 thermocouple accuracy requirements without software correction. |
| Electrochemical Sensor Interface | Battery-Powered pH Meter Front-End |
Use Scenario: Reading nanoamp-level current from amperometric gas sensors (e.g., CO, NO₂), converted to voltage via transimpedance configuration. IC Role / Device Role / Timing Role: Ultra-high-impedance TIA input stage - IN+ grounded, IN− connected to sensor cathode, feedback resistor tied to OUT. Use Value: 1pA input bias current avoids false baseline shift; rail-to-rail output accommodates wide pH-dependent voltage swings (0–14V equivalent) with single +5V supply. |
Use Scenario: Portable handheld pH meter requiring multi-day battery life while maintaining ±0.01pH accuracy across 0–14 pH range. IC Role / Device Role / Timing Role: Low-power, high-precision buffer between glass electrode (high-Z, ~100MΩ) and ADC input. Use Value: 350µA active current + 0.1µA shutdown enables >1-year shelf life; 20µV offset ensures <0.002pH measurement uncertainty at 25°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDR | Zero-drift chopper architecture; 10µV max offset (25°C); 0.05µV/°C drift; higher 1.8MHz GBW but 17µA ICC. | Better drift spec but introduces 10nVpp chopper noise; unsuitable for low-frequency electrochemical sensing below 1Hz. | Select OPA333AIDR only when ultra-low drift dominates over low-noise and low-power requirements. |
| LTC2050CS8#PBF | Zero-drift design; 5µV max offset (25°C); 0.025µV/°C drift; 1.5MHz GBW; 120µA ICC; SO-8 package. | Superior DC specs but 340× higher quiescent current - incompatible with battery-operated devices needing µA-level sleep modes. | Choose LTC2050CS8#PBF for mains-powered lab equipment demanding highest possible DC accuracy, not portable instrumentation. |
Compared with OPA333AIDR and LTC2050CS8#PBF, the MAX4236AESA uniquely balances ultra-low offset (20µV), ultra-low drift (2µV/°C), ultra-low power (350µA), and true shutdown (0.1µA), making it the only option meeting all four criteria simultaneously for field-deployable precision analog front-ends.
Availability
MAX4236AESA is available at Aetrix Electronics and suitable for strain gauge signal conditioning, thermocouple amplification, and electrochemical sensor interface applications requiring stable component supply across industrial, medical, and environmental monitoring programs.
Supply support for MAX4236AESA 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 high-performance analog and mixed-signal ICs for precision, power, and interface applications - known for innovation in rail-to-rail amplifiers, voltage references, and sensor signal chains.
The MAX4236/MAX4237 family was engineered specifically for ultra-low-drift, low-power, single-supply instrumentation - targeting applications where traditional chopper amplifiers introduce unacceptable noise or complexity.
FAQ
What is the maximum guaranteed input offset voltage for MAX4236AESA at +25°C?
The MAX4236AESA is grade-A tested and guaranteed to have a maximum input offset voltage of 20µV at +25°C. This limit is 100% production tested per Maxim specification, unlike grade-B variants which are rated at 50µV max. The typical value is 5µV, and distribution data shows >95% of units fall below 10µV.
Does MAX4236AESA support true rail-to-rail input common-mode range?
No - the MAX4236AESA features ground-sensing input (common-mode range extends to VEE − 0.15V), but its upper limit is VCC − 1.2V. It does not include the positive rail. However, this extended lower range enables direct interfacing with sensors whose output can go slightly below ground, while the rail-to-rail output fully utilizes the supply range.
Can MAX4236AESA drive a 1000pF capacitive load stably?
No - the MAX4236AESA is characterized for stability with up to 200pF capacitive load. Driving 1000pF directly will cause sustained oscillation or excessive overshoot. For larger loads, add a series isolation resistor (e.g., 10–50Ω) between OUT and the capacitive node, or use a unity-gain buffer stage with higher drive capability.
What is the shutdown recovery time for MAX4236AESA?
The MAX4236AESA requires 4µs to recover from shutdown to full operational output swing when loaded with 1kΩ, as measured from SHDN rising edge to output settling within 0.1% of final value. This timing is consistent across −40°C to +85°C and independent of supply voltage between +2.4V and +5.5V.
Is MAX4236AESA pin-compatible with MAX4236AEUA or MAX4236EUT-T?
No - MAX4236AESA (SO-8) has different pinout and footprint than MAX4236AEUA (µMAX-8) and MAX4236EUT-T (SOT23-6). While functional behavior is identical, PCB layout, thermal design, and decoupling strategies differ significantly. Direct replacement requires board redesign; consult package drawings for mechanical compatibility.
MAX4236AESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
MAX4236AESA FAQ
1.How can I place an order for MAX4236AESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4236AESA 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 MAX4236AESA reliable?
The price and inventory of MAX4236AESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4236AESA is usually 5 days.
3.What payment methods are accepted for MAX4236AESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4236AESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4236AESA?
MAX4236AESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4236AESA 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 MAX4236AESA?
For technical support, including MAX4236AESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4236AESA requirements.
6.How does Aetrix verify that MAX4236AESA is sourced from the original manufacturer or authorized distributors?
All MAX4236AESA 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 MAX4236AESA meets industry standards.
7.What is the process for return or replacement of MAX4236AESA?
All MAX4236AESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4236AESA, 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 MAX4236AESA part is unused and in its original packaging.
Return procedure for MAX4236AESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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