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Analog Devices Inc./Maxim Integrated MAX4236BESA+
- Part No.:
- MAX4236BESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4236BESA+.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,881
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Product details
Overview
The MAX4236BESA+ from Maxim Integrated is a high-precision, unity-gain stable rail-to-rail output operational amplifier with 20µV max input offset voltage (Grade B, +25°C), 2µV/°C max offset drift, and ultra-low 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 electrochemical sensor front-ends and thermocouple amplifiers.
For engineers reviewing the MAX4236BESA+ datasheet, MAX4236BESA+ pinout, MAX4236BESA+ application, or MAX4236BESA+ equivalent, key selection criteria include guaranteed Grade B offset performance in SO-8 package, rail-to-rail output swing into 1kΩ, ground-sensing input common-mode range extending to VEE −0.15V, and verified 200pF capacitive load stability without external compensation.
Technical Context
The MAX4236BESA+ employs a CMOS input stage enabling 1pA input bias current and 1000MΩ input resistance, paired with BiCMOS output stage supporting rail-to-rail swing within 150mV of rails under 1kΩ load. Its DC precision is achieved without chopper stabilization, relying instead on laser-trimmed thin-film resistors for offset and drift control across −40°C to +85°C.
It integrates a dedicated SHDN pin (Pin 5 in SO-8) that forces output into high-impedance state and reduces ICC to ≤2µA (typ 0.1µA) in shutdown mode, with 4µs recovery time. The device is unity-gain stable (AV = 1V/V), distinguishing it from the higher-bandwidth MAX4237 family variant requiring AV ≥ 5V/V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 50µV max at +25°C (Grade B) - sets absolute DC error floor in precision sensor signal chains |
| Offset Drift | 4.5µV/°C max - limits temperature-induced baseline drift in uncalibrated industrial instrumentation |
| Input Bias Current | 1pA typ - enables use with high-impedance piezoelectric and electrochemical sensors without leakage-induced error |
| Gain-Bandwidth Product | 1.7MHz - supports stable closed-loop operation up to ~10kHz with AV = 1, suitable for low-frequency sensor conditioning |
| Rail-to-Rail Output Swing | Within 150mV of VCC/VEE into 1kΩ - maximizes dynamic range in +3V/+5V single-supply systems |
| Quiescent Current | 350µA typ (normal mode), 0.1µA typ (shutdown) - enables microamp-level power budgeting in portable devices |
| Capacitive Load Drive | 200pF stable - eliminates need for isolation resistor when driving ADC input capacitance or long PCB traces |
Pinout & Package
MAX4236BESA+ is supplied in an 8-pin SO (Small Outline) package with standard JEDEC MO-002AC footprint (5.0mm × 6.2mm, 1.27mm pitch). Pin 1 is marked with a beveled corner or dot; Pin 5 is SHDN, Pin 6 is VCC, Pin 7 is OUT, Pin 8 is VEE, Pins 1 & 5 are NC (no internal connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connection | Not internally bonded - must remain unconnected; no pull-up/down required |
| 2 | OUT | Amplifier output node - drives loads up to 200pF; high-impedance in shutdown mode |
| 3 | IN+ | Noninverting input - accepts common-mode voltages down to VEE −0.15V |
| 4 | IN− | Inverting input - matched to IN+ for optimal CMRR (80dB min over temp) |
| 5 | No Connection | Not internally bonded - must remain unconnected; no pull-up/down required |
| 6 | VCC | Positive supply input - requires 0.1µF ceramic bypass capacitor placed adjacent to pin |
| 7 | SHDN | Active-low shutdown control - logic low (≤0.3×VCC) disables amplifier and forces OUT high-Z |
| 8 | VEE | Negative supply input - connect to GND for single-supply operation; bypass with 0.1µF capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 1pA typ enables >100GΩ source impedance interfacing without measurable error |
| Laser-trimmed offset & drift | 50µV max VOS / 4.5µV/°C max TCVOS (Grade B) - eliminates system-level calibration in cost-sensitive designs |
| Rail-to-rail output + ground-sensing input | Full input/output voltage range utilization from VEE −0.15V to VCC −1.2V and within 150mV of rails - maximizes SNR in low-voltage systems |
| Integrated shutdown function | 0.1µA quiescent current and high-Z output enable rapid power cycling in duty-cycled sensor nodes |
| Single-supply compatibility | Operates from +2.4V to +5.5V - supports direct integration with Li-ion, 3.3V, and 5V rails without level-shifting |
Applications
| Strain Gauge Signal Conditioning | 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 providing high-impedance, low-drift gain before ADC digitization. Use Value: 1pA input bias prevents bridge imbalance error; 50µV offset ensures <0.1% full-scale error in 50mV span bridges without trimming. |
Use Scenario: Charge-to-voltage conversion for piezoelectric accelerometers and acoustic emission sensors. IC Role / Device Role / Timing Role: Low-noise, high-Z transimpedance amplifier converting pC-level charge pulses into measurable voltage signals. Use Value: 14nV/√Hz input noise and 0.2µVp-p 0.1–10Hz noise preserve weak transient signals; rail-to-rail swing captures full dynamic range. |
| Thermocouple Amplification | Battery-Powered Electrochemical Sensors |
Use Scenario: Cold-junction compensated amplification of µV-level thermocouple outputs (e.g., Type K, J) in portable temperature loggers. IC Role / Device Role / Timing Role: First-stage gain block with precision DC coupling and minimal self-heating-induced drift. Use Value: 4.5µV/°C offset drift minimizes temperature-induced baseline error; 350µA ICC extends AA battery life to >2 years in 1Hz sampling systems. |
Use Scenario: Amperometric detection of analyte concentration in glucose meters, gas sensors, and pH probes. IC Role / Device Role / Timing Role: Transimpedance amplifier converting nanoamp-level electrode currents into stable voltage outputs. Use Value: 1pA input bias avoids current measurement error; shutdown mode reduces average current to sub-µA during idle periods. |
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 architecture (chopper), 10µV max VOS (A-grade), 0.02µV/°C drift, 50pA IB, 350kHz GBW | Superior drift performance but lower bandwidth; chopper ripple may affect sensitive analog front-ends | Select OPA333AIDR when ultra-low drift dominates over bandwidth and ripple sensitivity |
| LTC2050CS8#PBF | Zero-drift, 5µV max VOS (S-grade), 0.015µV/°C drift, 30pA IB, 3MHz GBW, integrated EMI filter | Higher bandwidth and better EMI rejection; larger SO-8 footprint (same pinout but different thermal pad) | Select LTC2050CS8#PBF for demanding EMI environments or when <0.1µV/°C drift is mandatory |
Compared with OPA333AIDR and LTC2050CS8#PBF, the MAX4236BESA+ offers higher bandwidth (1.7MHz vs ≤350kHz) and lower input bias current (1pA vs ≥30pA) without chopper artifacts, making it preferable for wideband, ultra-high-impedance sensor interfaces where zero-drift ripple is unacceptable.
Availability
MAX4236BESA+ is available at Aetrix Electronics and suitable for battery-powered instrumentation, electrochemical sensor modules, and thermocouple amplifier designs requiring stable component supply across extended temperature ranges (−40°C to +85°C) and long production lifecycles.
Supply support for MAX4236BESA+ 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) is a fabless semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.
The MAX4236/MAX4237 family was designed specifically for ultra-precision, low-power sensor signal conditioning - targeting applications where chopper-stabilized amplifiers introduce unacceptable noise or spectral artifacts.
FAQ
What is the maximum input offset voltage specification for MAX4236BESA+ at +25°C?
The MAX4236BESA+ has a maximum input offset voltage of 50µV at +25°C, as specified for Grade B devices in the SO-8 package. This value is production-tested and guaranteed across the full operating temperature range (−40°C to +85°C), where it increases to ±340µV max. The MAX4236BESA+ achieves this without chopper stabilization, preserving signal integrity in sensitive analog paths.
Does MAX4236BESA+ support single-supply operation, and what is its minimum supply voltage?
Yes, MAX4236BESA+ 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 when VEE = GND), and the output swings rail-to-rail within 150mV of both rails into a 1kΩ load. This allows full utilization of the supply range in +3V and +5V systems without level-shifting circuitry.
How does the shutdown function work on MAX4236BESA+, and what is its recovery time?
The MAX4236BESA+ enters shutdown mode when the SHDN pin (Pin 7 in SO-8) is pulled low to ≤0.3×VCC, reducing quiescent current to ≤2µA (typically 0.1µA) and placing the output in a high-impedance state. Recovery to full operation occurs in 4µs (typical) after SHDN is raised to ≥0.7×VCC. No external pull-up is required, but SHDN must never be left floating.
What package type and pin count does MAX4236BESA+ use, and are all pins functional?
MAX4236BESA+ uses an 8-pin SO (Small Outline) package per JEDEC MO-002AC. Pins 1 and 5 are No Connect (NC) - not internally bonded and must remain unconnected. Functional pins are: Pin 2 (OUT), Pin 3 (IN+), Pin 4 (IN−), Pin 6 (VCC), Pin 7 (SHDN), and Pin 8 (VEE). Bypass capacitors (0.1µF ceramic) are required on VCC and VEE.
Can MAX4236BESA+ drive capacitive loads, and what is its stability limit?
Yes, MAX4236BESA+ is stable driving up to 200pF capacitive loads without external compensation, as verified in the datasheet's Electrical Characteristics table. This capability simplifies interface design with ADC input capacitance, long PCB traces, or RC filters. For loads exceeding 200pF, a series isolation resistor (e.g., 10–50Ω) between amplifier output and capacitance is recommended to maintain phase margin.
MAX4236BESA+ 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:
- 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:
- -
- 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
MAX4236BESA+ FAQ
1.How can I place an order for MAX4236BESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4236BESA+ 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 MAX4236BESA+ reliable?
The price and inventory of MAX4236BESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4236BESA+ is usually 5 days.
3.What payment methods are accepted for MAX4236BESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4236BESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4236BESA+?
MAX4236BESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4236BESA+ 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 MAX4236BESA+?
For technical support, including MAX4236BESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4236BESA+ requirements.
6.How does Aetrix verify that MAX4236BESA+ is sourced from the original manufacturer or authorized distributors?
All MAX4236BESA+ 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 MAX4236BESA+ meets industry standards.
7.What is the process for return or replacement of MAX4236BESA+?
All MAX4236BESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4236BESA+, 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 MAX4236BESA+ part is unused and in its original packaging.
Return procedure for MAX4236BESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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