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Analog Devices Inc./Maxim Integrated MAX40263AVB+T
- Part No.:
- MAX40263AVB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-XFQFN
- Datasheet:
-
MAX40263AVB+T.pdf
- Description:
- 1.8V, 15MHZ, LOW-OFFSET, LOW-POW
- Quantity:
- Payment:
- Shipping:
Inventory:2,099
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Product details
Overview
The MAX40263AVB+T from Analog Devices is a dual-channel, rail-to-rail input/output operational amplifier with individually controllable active-low shutdown pins (SHDNA/SHDNB), 15MHz unity-gain bandwidth, 50μV max input offset voltage (autocalibrated at power-up), and 750μA typical quiescent current per channel - optimized for precision signal buffering in portable medical instruments and SAR ADC driver stages.
For engineers reviewing the MAX40263AVB+T datasheet, MAX40263AVB+T pinout, MAX40263AVB+T application, or MAX40263AVB+T equivalent, key selection criteria include its ultra-low input bias current (<1.5pA), absence of input crossover distortion, 1.8V–5.5V supply range, and guaranteed operation across –40°C to +125°C for industrial-grade sensor interfaces and battery-powered instrumentation.
Technical Context
The MAX40263AVB+T employs an integrated ultra-quiet charge pump that generates an internal rail 1V above VDD to power a PMOS input differential pair, eliminating crossover distortion without external components. Its autocalibration circuit performs one-time VOS trimming at power-up, achieving ≤50μV offset at +25°C and retaining calibration through shutdown cycles.
This architecture enables true rail-to-rail input operation (VSS – 0.1V to VDD + 0.1V) and output swing within 50mV of rails, while maintaining 12.7nV/√Hz input voltage noise density and 105dB THD+N at 10kHz - critical for high-fidelity 12- to 14-bit data acquisition systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8V to 5.5V - supports single-cell Li-ion, 3.3V logic, and low-voltage industrial rails without level-shifting. |
| Unity-Gain Bandwidth | 15MHz - enables stable gain-of-1 buffering of fast transients in photodiode TIA and filter applications. |
| Input Offset Voltage | 50μV max at +25°C - ensures <0.005% gain error in precision instrumentation amplifiers and reference buffers. |
| Quiescent Current | 750μA per channel - allows dual-channel operation on microamp-level battery budgets in portable devices. |
| Input Voltage Noise | 12.7nV/√Hz at 10kHz - preserves SNR in low-amplitude sensor signal chains before ADC sampling. |
| THD+N | –105dB at 10kHz - meets audio-grade linearity requirements for analog front-end conditioning. |
| Rail-to-Rail I/O | VCM = VSS – 0.1V to VDD + 0.1V; VOL/VOH ≤ 50mV - maximizes dynamic range in single-supply 12-bit+ SAR ADC drivers. |
Pinout & Package
MAX40263AVB+T is housed in a 10-pin Ultra Thin QFN (UTQFN) package measuring 2.1mm × 1.6mm × 0.45mm, with exposed thermal pad (package code V101A2CN+1, outline 21-0610), suitable for space-constrained portable and medical PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VSS) | Negative supply reference | Ground return path for both channels; must be low-impedance to minimize PSRR degradation. |
| 2 (SHDNA) | Channel A shutdown control | Active-low logic input; pulls channel A into high-Z state with <1µA shutdown current. |
| 3 (SHDNB) | Channel B shutdown control | Independent active-low control; enables selective power gating without affecting channel A operation. |
| 4 (INB+) | Noninverting input, channel B | High-impedance CMOS node (10¹¹Ω); accepts signals up to VDD + 0.1V for true rail-to-rail input. |
| 5 (INB–) | Inverting input, channel B | Differential pair input; matched to INB+ for precision closed-loop gain accuracy. |
| 6 (OUTB) | Output, channel B | Capable of driving ≥10kΩ loads to within 50mV of rails; stable with ≤300pF capacitive load. |
| 7 (VDD) | Positive supply | Accepts 1.8V–5.5V; powers internal charge pump and output stage; decoupling required near pin. |
| 8 (OUTA) | Output, channel A | Independent output; supports multiplexing via high-Z shutdown without external isolation switches. |
| 9 (INA–) | Inverting input, channel A | Matched to INA+; low 0.01pA bias current enables high-Z sensor interfacing (e.g., photodiodes). |
| 10 (INA+) | Noninverting input, channel A | Full rail-to-rail common-mode range; immune to phase reversal during overdrive. |
Key Features
| Feature | Design Value |
|---|---|
| Power-on autocalibration | Reduces input offset to ≤50μV without external trim components or factory calibration steps. |
| Integrated charge pump | Eliminates crossover distortion in noninverting configurations (e.g., Sallen-Key filters) without external bias networks. |
| Individual channel shutdown | Enables dynamic power management: one channel active while the other draws <1µA, ideal for time-multiplexed sensing. |
| No phase reversal | Prevents latch-up or erroneous output states when inputs exceed supply rails - critical for fault-tolerant sensor monitoring. |
| Low input bias current | <1.5pA at +25°C enables direct connection to >100MΩ source impedances (e.g., pH electrodes, piezoresistive sensors). |
Applications
| Portable Medical Instrumentation | Analog-to-Digital Converter Buffering |
|---|---|
Use Scenario: Signal conditioning for ECG/EEG front-ends where microvolt-level biopotentials require low-noise, low-offset amplification prior to digitization. IC Role / Device Role / Timing Role: Dual-channel op-amp serving as programmable-gain amplifier (PGA) input stage and anti-aliasing filter driver. Use Value: 12.7nV/√Hz noise density and 50μV offset preserve signal integrity across 0.05–150Hz clinical bandwidths without post-acquisition correction. | Use Scenario: Driving the input of 12- to 14-bit SAR ADCs (e.g., MAX11645) in battery-powered data loggers with tight power budgets. IC Role / Device Role / Timing Role: Rail-to-rail output buffer ensuring full-scale ADC utilization while settling to 0.01% in 1.7µs. Use Value: Output swing within 50mV of rails and 7V/µs slew rate prevent missing codes and enable accurate DC-coupled sampling. |
| Transimpedance Amplification | Battery-Operated Industrial Sensors |
Use Scenario: Converting photocurrent from low-light photodiodes in portable spectrometers or pulse oximeters. IC Role / Device Role / Timing Role: Precision transimpedance amplifier (TIA) with ultra-low input bias current and no phase reversal during photodiode saturation. Use Value: <1.5pA input bias current minimizes dark-current error; rail-to-rail output accommodates wide dynamic range photocurrent swings. | Use Scenario: Signal conditioning for high-impedance RTDs, strain gauges, or gas sensors in wireless field transmitters operating 10+ years on coin cells. IC Role / Device Role / Timing Role: Low-power, precision amplifier enabling duty-cycled measurement cycles with independent channel shutdown. Use Value: 750μA per channel + individual shutdown reduces average current to sub-µA levels during sleep intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, low-power, precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333PDR | Zero-drift architecture; 0.1μV/°C offset drift vs. MAX40263AVB+T's 6μV/°C; higher 35μA/channel quiescent current. | Better long-term DC stability but unsuitable for <1mA total system budget; lacks individual shutdown pins. | Select OPA2333PDR only when ultra-low drift dominates over power and channel independence requirements. |
| ADA4522-2ARMZ | Zero-drift, 2.5μV max offset, 1.2mA/channel IQ; wider 4.5–36V supply range; no shutdown function. | Targeted at precision industrial PLCs, not portable equipment; incompatible with 1.8V operation or battery shutdown sequencing. | Choose ADA4522-2ARMZ for high-voltage, zero-drift lab equipment - not for space- or power-constrained designs. |
Compared with OPA2333PDR and ADA4522-2ARMZ, the MAX40263AVB+T uniquely balances 15MHz bandwidth, individual channel shutdown, 1.8V operation, and <50μV offset - making it the only option meeting all four criteria for portable, multi-sensor, battery-powered instrumentation.
Availability
MAX40263AVB+T is available at Aetrix Electronics and suitable for portable medical instrumentation, SAR ADC buffering, transimpedance amplification, and battery-operated industrial sensors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX40263AVB+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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.
The MAX40263AVB+T belongs to Analog Devices' precision, low-power op-amp product line designed specifically for signal integrity in portable, medical, and industrial sensor interfaces where rail-to-rail operation, low noise, and autonomous calibration are mandatory.
FAQ
What is the maximum operating temperature range for the MAX40263AVB+T?
The MAX40263AVB+T is specified for continuous operation from –40°C to +125°C, with all electrical characteristics guaranteed across this full industrial temperature range. This makes the MAX40263AVB+T suitable for under-hood automotive sensor interfaces, industrial motor controls, and portable medical devices deployed in uncontrolled ambient environments.
Does the MAX40263AVB+T require external components for its input offset calibration?
No, the MAX40263AVB+T performs autonomous input offset voltage calibration at power-up using an internal autotrim circuit - no external capacitors, resistors, or calibration firmware are needed. The MAX40263AVB+T achieves ≤50μV offset at +25°C and retains this calibration value through subsequent shutdown cycles without re-execution.
How does the MAX40263AVB+T eliminate crossover distortion without external circuitry?
The MAX40263AVB+T integrates an ultra-quiet charge pump that generates an internal voltage rail 1V above VDD to bias a PMOS input differential pair. This architecture eliminates the NMOS/PMOS transition region responsible for crossover distortion in standard CMOS op-amps - a feature confirmed in Figure 1 of the MAX40263AVB+T datasheet and validated across all operating conditions.
Can both channels of the MAX40263AVB+T be shut down independently while maintaining different power states?
Yes, the MAX40263AVB+T provides two dedicated active-low shutdown pins - SHDNA for channel A and SHDNB for channel B - allowing fully independent control. One channel can remain active (drawing 750μA) while the other is in shutdown (drawing <1μA), enabling dynamic power management in time-multiplexed sensor systems without cross-talk or shared control logic.
What is the recommended power supply ramp rate to ensure reliable MAX40263AVB+T calibration?
To guarantee successful power-on autocalibration, the MAX40263AVB+T requires a supply voltage ramp rate fast enough to settle within 10ms. If the supply ramps too slowly, calibration may trigger before VDD stabilizes, resulting in elevated offset. Alternatively, power the MAX40263AVB+T with SHDNA/SHDNB held low, then assert both high only after VDD has fully settled - a method explicitly recommended in the MAX40263AVB+T Applications Information section.
MAX40263AVB+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-XFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Standard
- Number of Circuits:
- 2
- Output Type:
- Single Ended, Rail-to-Rail
- Slew Rate:
- 7V/µs
- Gain Bandwidth Product:
- 15 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 10 µV
- Current - Supply:
- 1.3mA (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:
- 10-UTQFN (1.6x2.1)
MAX40263AVB+T FAQ
1.How can I place an order for MAX40263AVB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX40263AVB+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 MAX40263AVB+T reliable?
The price and inventory of MAX40263AVB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX40263AVB+T is usually 5 days.
3.What payment methods are accepted for MAX40263AVB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX40263AVB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX40263AVB+T?
MAX40263AVB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX40263AVB+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 MAX40263AVB+T?
For technical support, including MAX40263AVB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX40263AVB+T requirements.
6.How does Aetrix verify that MAX40263AVB+T is sourced from the original manufacturer or authorized distributors?
All MAX40263AVB+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 MAX40263AVB+T meets industry standards.
7.What is the process for return or replacement of MAX40263AVB+T?
All MAX40263AVB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX40263AVB+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 MAX40263AVB+T part is unused and in its original packaging.
Return procedure for MAX40263AVB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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