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Analog Devices Inc./Maxim Integrated MAX44263AXA+T
- Part No.:
- MAX44263AXA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TFSOP (0.049", 1.25mm Width)
- Datasheet:
-
MAX44263AXA+T.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT SC70-8
- Quantity:
- Payment:
- Shipping:
Inventory:804
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Product details
Overview
The MAX44263AXA+T from Maxim Integrated is a dual, rail-to-rail input/output precision operational amplifier optimized for low-noise, low-power signal conditioning in portable and industrial systems. It delivers 15MHz unity-gain bandwidth, 12.7nV/√Hz input voltage noise, 500fA input bias current, and 50µV max input offset voltage at +25°C - enabling high-fidelity buffering of 12- to 14-bit SAR ADCs in battery-powered medical instruments and handheld devices.
For engineers reviewing the MAX44263AXA+T datasheet, MAX44263AXA+T pinout, MAX44263AXA+T application, or MAX44263AXA+T equivalent, this page provides verified electrical specifications, SC70-8 package layout, dual-channel op amp functional context, and validated alternative options for low-voltage, low-noise analog signal chains.
Technical Context
The MAX44263AXA+T employs an ultra-quiet integrated charge pump that generates an internal rail 1V above VDD to power its PMOS input stage - eliminating crossover distortion without external components or performance trade-offs. This architecture enables true rail-to-rail input operation from (VSS − 0.1V) to (VDD + 0.1V) and output swing within 10mV of rails at 10kΩ load.
Each amplifier channel features independent DC precision: 500µV max input offset voltage over −40°C to +125°C, 0.8–5µV/°C drift, and 97–115dB open-loop gain. The device self-calibrates on power-up to <50µV VOS and maintains stability with up to 300pF capacitive loads without isolation resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8V to 5.5V - supports direct interface with 1.8V/3.3V/5V logic and mixed-supply systems without level shifters. |
| Unity-Gain Bandwidth | 15MHz - enables accurate amplification of signals up to ~1MHz with ≤0.1% gain error in closed-loop configurations. |
| Input Voltage Noise Density | 12.7nV/√Hz at 10kHz - preserves SNR in precision sensor front-ends and ADC driver stages. |
| Input Bias Current | 0.01–0.5pA typical at +25°C - minimizes voltage error when driving high-impedance sources like photodiodes or pH electrodes. |
| Input Offset Voltage | 50µV max at +25°C; 800µV max over −40°C to +125°C - ensures baseline accuracy in uncalibrated industrial temperature sensing. |
| Quiescent Current per Amp | 650–1100µA - balances speed and battery life in always-on portable instrumentation. |
| Output Voltage Swing | Within 10mV of VSS/VDD at 10kΩ load - maximizes dynamic range in single-supply 12-bit data acquisition. |
Pinout & Package
MAX44263AXA+T is housed in an 8-pin SC70 package (outline 21-0460), measuring 2.0mm × 2.0mm × 0.9mm, with wettable flank leads for automated optical inspection. Pin 1 is marked by a dot; the package is RoHS-compliant and lead(Pb)-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 INA+ | Channel A noninverting input | High-impedance CMOS node; accepts common-mode voltages from VSS − 0.1V to VDD + 0.1V. |
| 2 INA− | Channel A inverting input | Differential pair input; matched to INA+ for <50µV input offset after autotrim. |
| 3 OUTA | Channel A output | Rail-to-rail capable; drives ≥10mA into resistive loads and remains stable with 300pF capacitive loads. |
| 4 VSS | Negative supply rail | Must be bypassed with 0.1µF capacitor to ground; serves as reference for both amplifier channels. |
| 5 INB+ | Channel B noninverting input | Electrically isolated from Channel A; identical specs and noise performance to INA+. |
| 6 INB− | Channel B inverting input | Independent differential input; no crosstalk with Channel A inputs per characterization data. |
| 7 OUTB | Channel B output | High-speed output with 7V/µs slew rate; usable for multiplexed sensor readout or dual-path filtering. |
| 8 VDD | Positive supply rail | Accepts 1.8–5.5V; requires local 0.1µF ceramic decoupling to minimize PSRR degradation above 10kHz. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O with zero-crossover distortion | Enabled by on-chip charge pump powering PMOS input stage - eliminates distortion in Sallen-Key filters and noninverting buffers. |
| Power-up auto-calibration | Reduces input offset to ≤50µV at +25°C without user intervention; triggered by internal POR circuitry in <10ms. |
| Ultra-low input bias current | 0.01pA typical - preserves signal integrity when interfacing with >1GΩ sensors such as piezoresistive pressure transducers. |
| High open-loop gain | 97–115dB - ensures ≤0.001% gain error in precision gain stages using 1% feedback resistors. |
| Wide temperature range support | Specified from −40°C to +125°C - qualified for under-hood automotive and industrial control applications. |
Applications
| Portable Medical Instrumentation | Analog-to-Digital Converter Buffering |
|---|---|
|
Use Scenario: Signal conditioning for ECG front-end amplifiers in handheld patient monitors. IC Role / Device Role / Timing Role: Dual-channel buffer isolating electrode inputs and driving anti-aliasing filters before 12-bit SAR ADC sampling. Use Value: 12.7nV/√Hz noise density and rail-to-rail output swing preserve microvolt-level cardiac signal fidelity across 0.05–150Hz band. |
Use Scenario: Driving the input of MAX11645 12-bit, 94ksps ADC in compact data loggers. IC Role / Device Role / Timing Role: Precision unity-gain buffer providing low-impedance source to ADC sample-and-hold capacitor. Use Value: 15MHz GBW and 7V/µs slew rate settle 2V step in <1.7µs to 0.01%, minimizing aperture uncertainty. |
| Transimpedance Amplifier | Battery-Operated Sensor Interface |
|
Use Scenario: Converting photocurrent from low-light photodiodes in portable spectrometers. IC Role / Device Role / Timing Role: High-gain TIA stage with feedback resistor >10MΩ and low-input-bias-current dual op amp. Use Value: 0.01pA input bias current prevents >10mV error across 10MΩ feedback, critical for sub-nA current resolution. |
Use Scenario: Conditioning outputs from MEMS accelerometers and temperature sensors in IoT edge nodes. IC Role / Device Role / Timing Role: Dual-channel signal conditioner powering two independent sensor paths with shared supply. Use Value: 650µA per amplifier quiescent current enables multi-day operation on coin-cell batteries while maintaining 15MHz bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-noise op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333PDR | Chopper-stabilized architecture; 0.02µV/°C offset drift vs. MAX44263AXA+T's 0.8–5µV/°C; higher 1/f noise. | Better DC stability in <1Hz applications; less suitable for wideband filtering due to chopper ripple. | Select OPA2333PDR when ultra-low drift dominates over bandwidth and noise floor requirements. |
| AD8602ARMZ-REEL | FET-input topology; 1pA input bias current (vs. 0.01pA); 8MHz GBW (vs. 15MHz); 22nV/√Hz noise (vs. 12.7nV/√Hz). | Lower cost; adequate for 10-bit ADC drivers but marginal for 12-bit+ precision at full bandwidth. | Select AD8602ARMZ-REEL where budget constraints outweigh need for sub-15nV/√Hz noise and 15MHz bandwidth. |
Compared with OPA2333PDR and AD8602ARMZ-REEL, the MAX44263AXA+T uniquely combines 15MHz bandwidth, 12.7nV/√Hz noise, and 0.01pA input bias in a thermally matched dual configuration - making it optimal for simultaneous high-resolution, high-speed sensor channel conditioning.
Availability
MAX44263AXA+T is available at Aetrix Electronics and suitable for portable medical instrumentation, analog-to-digital converter buffering, transimpedance amplification, battery-operated sensor interfaces, and industrial signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for MAX44263AXA+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 and mixed-signal ICs for demanding industrial, medical, and communications applications - emphasizing low power, high accuracy, and robust operation.
The MAX44263AXA+T belongs to Maxim's 1.8V–5.5V, rail-to-rail I/O op amp family engineered specifically for high-fidelity, low-power signal conditioning in space-constrained portable and harsh-environment systems.
FAQ
What is the operating temperature range for the MAX44263AXA+T?
The MAX44263AXA+T is fully specified from −40°C to +125°C, with guaranteed performance including input offset voltage, bandwidth, and PSRR across this range. It can operate down to 1.7V supply at 0°C to +70°C, but full 1.8V–5.5V range applies only within the extended industrial temperature grade.
Does the MAX44263AXA+T include shutdown or calibration functionality?
No - unlike the MAX44260 (shutdown) or MAX44261 (on-demand CAL), the MAX44263AXA+T lacks dedicated SHDN or CAL pins. It performs automatic power-up calibration only, reducing input offset to ≤50µV at +25°C without external control signals.
What package type is used for the MAX44263AXA+T?
The MAX44263AXA+T uses an 8-pin SC70 package (package code X8CN+1, outline 21-0460), measuring 2.0mm × 2.0mm × 0.9mm. It features RoHS-compliant, lead(Pb)-free construction with wettable flank leads for reliable solder-joint inspection.
How does the MAX44263AXA+T achieve rail-to-rail input without crossover distortion?
The MAX44263AXA+T integrates an ultra-quiet charge pump that generates an internal voltage rail 1V above VDD to bias its PMOS input differential pair. This eliminates the NMOS/PMOS transition region responsible for crossover distortion in conventional rail-to-rail input op amps.
Can the MAX44263AXA+T drive heavy capacitive loads directly?
Yes - the MAX44263AXA+T remains stable with up to 300pF capacitive loads without requiring external isolation resistors, as confirmed in the datasheet's stability characterization (Figure MAX44260 toc26). This simplifies PCB layout for ADC driver and filter applications.
MAX44263AXA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TFSOP (0.049", 1.25mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 7V/µs
- Gain Bandwidth Product:
- 15 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.01 pA
- Voltage - Input Offset:
- 10 µV
- Current - Supply:
- 650µA (x2 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-8
MAX44263AXA+T FAQ
1.How can I place an order for MAX44263AXA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX44263AXA+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 MAX44263AXA+T reliable?
The price and inventory of MAX44263AXA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX44263AXA+T is usually 5 days.
3.What payment methods are accepted for MAX44263AXA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX44263AXA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX44263AXA+T?
MAX44263AXA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX44263AXA+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 MAX44263AXA+T?
For technical support, including MAX44263AXA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX44263AXA+T requirements.
6.How does Aetrix verify that MAX44263AXA+T is sourced from the original manufacturer or authorized distributors?
All MAX44263AXA+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 MAX44263AXA+T meets industry standards.
7.What is the process for return or replacement of MAX44263AXA+T?
All MAX44263AXA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX44263AXA+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 MAX44263AXA+T part is unused and in its original packaging.
Return procedure for MAX44263AXA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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