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Analog Devices Inc./Maxim Integrated MAX4236AESA+T
- Part No.:
- MAX4236AESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4236AESA+T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,645
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Product details
Overview
The MAX4236AESA+T from Maxim Integrated is a high-precision, unity-gain stable rail-to-rail output operational amplifier with 20µV max input offset voltage (Grade A, +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 product, and features shutdown mode reducing quiescent current to 0.1µA - ideal for battery-powered instrumentation and electrochemical sensor front-ends.
For engineers reviewing the MAX4236AESA+T datasheet, MAX4236AESA+T pinout, MAX4236AESA+T application, or MAX4236AESA+T equivalent, this page provides verified specifications, SO-8 package terminal mapping, real-world use cases in strain gauge and thermocouple amplification, and two validated alternative op amps with documented functional trade-offs.
Technical Context
The MAX4236AESA+T employs a CMOS input stage enabling ultra-low input bias current (1pA) and ground-sensing operation - its input common-mode range extends to VEE − 0.15V, supporting true single-supply signal acquisition near ground. It achieves 120dB typical open-loop gain and 102dB CMRR, ensuring high DC accuracy in precision transducer interfaces.
Its rail-to-rail output swings within 150mV of both rails into 1kΩ, maintaining dynamic range across low-voltage systems. The integrated shutdown pin (SHDN) enables fast recovery (4µs) and forces output into high-impedance state, critical for power-gated sensor nodes and multi-channel multiplexed analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 20µV max at +25°C (Grade A) - ensures ≤0.04% error in 50mV full-scale sensor outputs without trimming. |
| Offset Drift | 2µV/°C max - limits temperature-induced error to <100µV over −40°C to +85°C industrial range. |
| Input Bias Current | 1pA typical - enables >100GΩ effective input impedance, essential for piezoelectric charge amplifiers. |
| Gain-Bandwidth Product | 1.7MHz - supports stable unity-gain configuration for wideband DC-coupled signal conditioning. |
| Supply Range | +2.4V to +5.5V single supply - compatible with Li-ion, 3.3V, and 5V logic domains without level-shifting. |
| Quiescent Current | 350µA normal mode / 0.1µA shutdown - extends battery life in portable instrumentation by >3000× during idle periods. |
| Output Swing | Rail-to-rail into 1kΩ load (≤150mV from rails) - maximizes ADC utilization in 3V/5V systems. |
Pinout & Package
MAX4236AESA+T is supplied in an 8-pin SO (Small Outline) package with standard SOIC-8 footprint (5.0mm × 4.0mm, 1.27mm pitch). Pin 1 is marked with a beveled corner or dot; device is lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier Output | High-drive rail-to-rail output node; connects directly to ADC input or next-stage buffer. |
| 2 (VEE) | Negative Power Supply | Ground reference for single-supply operation; bypass with 0.1µF capacitor to minimize noise coupling. |
| 3 (IN+) | Noninverting Input | High-impedance sensor interface point; requires guarding in high-Z applications to prevent leakage errors. |
| 4 (IN−) | Inverting Input | Feedback node for closed-loop configurations; matched layout critical for CMRR preservation. |
| 5 (N.C.) | No Connection | Not internally bonded; must remain unconnected on PCB to avoid parasitic coupling. |
| 6 (SHDN) | Shutdown Control Input | Active-low logic input; pull to VEE (GND) to enter 0.1µA shutdown; pull to VCC for normal operation. |
| 7 (N.C.) | No Connection | Not internally bonded; electrically isolated; no PCB trace required. |
| 8 (VCC) | Positive Supply Input | Primary power rail; bypass with 0.1µF ceramic capacitor placed <1mm from pin to suppress supply ripple. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low offset voltage drift | 2µV/°C max (Grade A) - eliminates need for periodic system recalibration in field-deployed sensors. |
| Rail-to-rail output swing | Within 150mV of VCC/VEE into 1kΩ - preserves full-scale resolution when driving SAR or delta-sigma ADCs. |
| Ground-sensing input | Common-mode range includes VEE − 0.15V - enables direct interfacing to bridge sensors referenced to system ground. |
| Integrated shutdown control | 0.1µA quiescent current + high-Z output - allows dynamic power gating in multi-channel data loggers without external switches. |
| Capacitive load drive | Stable with up to 200pF load - supports direct connection to long traces or ADC input capacitance without isolation resistor. |
Applications
| Strain Gauge Amplification | Piezoelectric Sensor Interface |
|---|---|
|
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: Primary instrumentation amplifier stage with ultra-low input current to prevent bridge imbalance errors and minimal offset drift to maintain calibration stability over temperature. Use Value: Enables ±0.01% full-scale accuracy without trimming, even after thermal cycling from −40°C to +85°C. |
Use Scenario: Charge-to-voltage conversion for piezoelectric accelerometers and acoustic emission sensors generating pC-level charge pulses. IC Role / Device Role / Timing Role: Low-bias-current, low-noise transimpedance amplifier with high input impedance (>100GΩ) to maximize signal-to-noise ratio and extend low-frequency response. Use Value: Supports sub-1Hz measurement bandwidth using minimal feedback capacitance, reducing component count and board space. |
| Thermocouple Cold-Junction Compensation | Electrochemical Sensor Front-End |
|
Use Scenario: Precision amplification of µV-level thermocouple outputs while rejecting common-mode noise from furnace or industrial heating elements. IC Role / Device Role / Timing Role: First-stage differential amplifier with 102dB CMRR and 120dB PSRR to suppress EMI and supply ripple in noisy environments. Use Value: Achieves <0.5°C measurement uncertainty in Type-K thermocouples without active filtering or shielding. |
Use Scenario: Signal conditioning for amperometric gas sensors and pH electrodes requiring femtoampere-level current resolution. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1pA input bias current and 0.2µVp-p low-frequency noise to resolve sub-nA currents without baseline drift. Use Value: Enables 12-bit-equivalent resolution in low-power portable gas analyzers operating from coin-cell batteries. |
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 | 17µV max offset (25°C), 0.1µV/°C drift, 200nA input bias - lower drift but 200× higher input current than MAX4236AESA+T. | Better for low-drift DC references; unsuitable for piezoelectric or high-impedance electrochemical sensors. | Select OPA333AIDR only when ultra-low drift dominates over input current requirements. |
| LTC2050CS8#TRPBF | 5µV max offset (25°C), 0.05µV/°C drift, 25pA input bias - superior DC specs but 1.5MHz GBW and no shutdown function. | Preferred for ultra-stable integrators or zero-drift metrology; lacks power-gating capability for battery operation. | Choose LTC2050CS8#TRPBF where absolute DC accuracy outweighs shutdown need and bandwidth suffices. |
Compared with OPA333AIDR and LTC2050CS8#TRPBF, the MAX4236AESA+T uniquely balances ultra-low input bias current (1pA), rail-to-rail output, integrated shutdown, and 1.7MHz bandwidth - making it optimal for battery-powered, high-impedance sensor systems requiring both precision and power efficiency.
Availability
MAX4236AESA+T is available at Aetrix Electronics and suitable for strain gauge amplification, thermocouple signal conditioning, and electrochemical sensor front-ends requiring stable component supply across automotive, industrial, and medical OEM programs.
Supply support for MAX4236AESA+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 high-performance analog and mixed-signal ICs for precision sensing, power management, and communication applications.
The MAX4236/MAX4237 family targets ultra-precision DC signal chains in resource-constrained environments - specifically engineered for sensor interfaces where offset, drift, and input current directly limit measurement fidelity.
FAQ
What is the maximum input offset voltage specification for MAX4236AESA+T at +25°C?
The MAX4236AESA+T is Grade A, guaranteeing a maximum input offset voltage of 20µV at +25°C. This value is 100% tested during production for SO-8 packages per Maxim's datasheet revision 0 (2001). Typical offset is 5µV, and the device maintains ≤150µV over the full −40°C to +85°C operating range.
Does MAX4236AESA+T support single-supply operation, and what is its minimum supply voltage?
Yes, MAX4236AESA+T supports true single-supply operation from +2.4V to +5.5V. Its input common-mode range extends to VEE − 0.15V (i.e., −0.15V with VEE = GND), enabling ground-referenced sensor inputs. The 2.4V minimum allows compatibility with partially discharged Li-ion cells and low-voltage microcontrollers.
What is the function of the SHDN pin on MAX4236AESA+T, and how does it affect output behavior?
The SHDN pin on MAX4236AESA+T is an active-low shutdown control. When pulled to VEE (GND), it reduces quiescent current to <0.1µA and places the output in a high-impedance state - electrically disconnecting the amplifier from downstream circuitry. Recovery time to full operation is 4µs, and the pin must never be left floating.
Can MAX4236AESA+T drive capacitive loads, and what is its rated stability limit?
Yes, MAX4236AESA+T is specified to remain stable with capacitive loads up to 200pF, as confirmed in the Electrical Characteristics table under "Capacitive Load Stability". This allows direct connection to ADC input capacitance or long PCB traces without requiring isolation resistors or external compensation networks.
How does the input bias current of MAX4236AESA+T impact high-impedance sensor applications?
The MAX4236AESA+T has a typical input bias current of 1pA - critical for preserving signal integrity in high-impedance applications like piezoelectric charge amplifiers or electrochemical sensors. At 1pA, it introduces <1mV error across a 1GΩ source impedance, enabling accurate measurement of sub-nA currents and pC-level charges without guard-ring layout complexity.
MAX4236AESA+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:
- Active
- 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+T FAQ
1.How can I place an order for MAX4236AESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4236AESA+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 MAX4236AESA+T reliable?
The price and inventory of MAX4236AESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4236AESA+T is usually 5 days.
3.What payment methods are accepted for MAX4236AESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4236AESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4236AESA+T?
MAX4236AESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4236AESA+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 MAX4236AESA+T?
For technical support, including MAX4236AESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4236AESA+T requirements.
6.How does Aetrix verify that MAX4236AESA+T is sourced from the original manufacturer or authorized distributors?
All MAX4236AESA+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 MAX4236AESA+T meets industry standards.
7.What is the process for return or replacement of MAX4236AESA+T?
All MAX4236AESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4236AESA+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 MAX4236AESA+T part is unused and in its original packaging.
Return procedure for MAX4236AESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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