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Analog Devices Inc./Maxim Integrated MAX6226ALA50+
- Part No.:
- MAX6226ALA50+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-CLCC
- Datasheet:
-
MAX6226ALA50+.pdf
- Description:
- IC VREF SERIES 0.02% 8LCC
- Quantity:
- Payment:
- Shipping:
Inventory:275
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Product details
Overview
The MAX6226ALA50+ from Analog Devices is an ultra-high-precision, ultra-low-noise series voltage reference delivering a stable 5.000V output with ±0.02% (max) initial accuracy, 3ppm/°C (max) temperature coefficient, and 2.85μVP-P (0.1Hz–10Hz) flicker noise - optimized for high-resolution ADC/DAC biasing in automotive-grade instrumentation.
For engineers reviewing the MAX6226ALA50+ datasheet, MAX6226ALA50+ pinout, MAX6226ALA50+ application, or MAX6226ALA50+ equivalent, this page delivers verified specifications, force/sense output architecture details, ceramic LCC package layout guidance, and validated alternatives for precision analog system design.
Technical Context
The MAX6226ALA50+ implements a curvature-corrected bandgap core with laser-trimmed thin-film resistors to achieve 3ppm/°C max TCVOUT over −40°C to +125°C. Its dual-output force-sense topology (OUTF/OUTS) enables Kelvin sensing to eliminate trace resistance errors in remote load applications.
It features a dedicated noise-reduction pin (NR) that, when bypassed with 0.1μF, reduces wideband noise from 145nV/√Hz to 95nV/√Hz at 1kHz while maintaining 380μA quiescent current - a key differentiator versus conventional low-noise references requiring higher supply current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±0.02% (max) at +25°C - ensures ≤1 LSB error in 16-bit systems across full automotive temperature range. |
| Tempco (TCVOUT) | ≤3ppm/°C (−40°C to +125°C) - guarantees <±120ppm total drift over full range, critical for metrology-grade stability. |
| Flicker Noise | 2.85μVP-P (0.1Hz–10Hz) - enables sub-20-bit effective resolution in precision digitization without external filtering. |
| Wideband Noise | 145nV/√Hz (no NR cap) or 95nV/√Hz (with 0.1μF on NR) - directly improves SNR in high-speed DAC/ADC clock domains. |
| Dropout Voltage | ≤200mV at 5mA load - supports operation from 5.2V input, enabling use with low-headroom LDOs or battery-supplied systems. |
| Load Regulation | ≤50μV/mA sourcing - maintains output stability under dynamic 10mA load transients typical in programmable current sources. |
| Long-Term Drift | 11ppm/1000hr - ensures calibration validity over multi-year industrial deployments without recalibration cycles. |
Pinout & Package
MAX6226ALA50+ uses an 8-pin hermetically sealed ceramic LCC (Leadless Chip Carrier) package (outline 21-100289), offering superior humidity immunity and reduced mechanical stress vs. plastic packages - essential for long-term drift performance in harsh environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - NR | Noise Reduction Input | Accepts 0.1μF capacitor to reduce wideband noise by 35% and improve AC PSRR; left open if unused. |
| 2 - IN | Positive Supply Input | Operates from 5.2V to 12.6V; supplies internal reference core and output stage with 380μA quiescent current. |
| 4 - GND | Analog Ground Reference | Single-point return for all reference circuitry; must be isolated from digital/power ground planes per layout guidelines. |
| 5 - OUTS | Sense Output (High-Impedance) | Provides feedback path to internal error amplifier; connects directly to load point for Kelvin voltage regulation. |
| 6 - OUTF | Force Output (Low-Impedance) | Delivers regulated 5V to load; shorted to OUTS near load to cancel trace IR drop; bypassed with 0.1–10μF to GND. |
| 3, 7, 8 - I.C. | Internally Connected | No external connection permitted; internal die connections only - floating pins must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Force/Sense Output Architecture | Enables true Kelvin sensing to eliminate voltage drop errors in PCB traces or cables - critical for ±0.01% system-level accuracy. |
| Ceramic Hermetic LCC Package | Eliminates humidity-induced drift and reduces thermal hysteresis to 5ppm - outperforms plastic packages in long-term stability. |
| Ultra-Low Flicker Noise | 2.85μVP-P (0.1Hz–10Hz) enables high-resolution DC measurements without post-processing filtering. |
| Stable with 0.1–10μF Load Capacitance | Supports both low-ESR ceramic (0.1μF) and bulk tantalum (10μF) combinations - simplifies power integrity for mixed-signal SoCs. |
| Automotive Temperature Range | Specified from −40°C to +125°C - qualified for engine control units, battery management, and ADAS sensor signal conditioning. |
Applications
| High-Resolution Data Acquisition | Precision Current Sources |
|---|---|
|
Use Scenario: 16-bit SAR ADC in portable test equipment requiring <±1 LSB integral nonlinearity over temperature. IC Role / Device Role / Timing Role: Primary voltage reference supplying VREF to ADC; force/sense outputs compensate for PCB trace resistance between IC and converter. Use Value: 3ppm/°C tempco and 11ppm/1000hr drift ensure calibration remains valid for >2 years without field adjustment. |
Use Scenario: Programmable 10mA current source for RTD or strain gauge excitation in industrial process transmitters. IC Role / Device Role / Timing Role: Precision 5V reference driving external MOSFET; OUTS senses load voltage while OUTF delivers current. Use Value: 0.05Ω load regulation and 50μV/mA sourcing linearity maintain current accuracy to ±0.05% across full 0–10mA range. |
| Digital Voltmeters (DVM) | ATE Equipment Reference Standards |
|
Use Scenario: Benchtop DVM requiring 7½-digit resolution and <10ppm/year calibration stability. IC Role / Device Role / Timing Role: Master reference for internal DAC-based autoranging and offset correction circuits. Use Value: 2.85μVP-P flicker noise and 95nV/√Hz wideband noise enable sub-100nV RMS measurement floor. |
Use Scenario: Rack-mounted ATE system needing traceable, low-drift reference for calibrating DMM modules. IC Role / Device Role / Timing Role: Primary reference standard in automated calibration station; operated in temperature-stabilized oven. Use Value: Ceramic LCC package delivers 5ppm thermal hysteresis and 11ppm/1000hr long-term drift - meets MIL-STD-45662A traceability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4550BRZ | 5.0V output, ±0.02% initial accuracy, 3ppm/°C tempco, but 5.5V min input voltage and no force/sense outputs. | Lacks Kelvin sensing - unsuitable for remote-load applications with >50mΩ trace resistance. | Select when board space is constrained and trace resistance is negligible; requires higher minimum supply voltage. |
| REF5050AIDR | 5.0V output, ±0.05% initial accuracy, 3ppm/°C tempco, 3.8V min input, no NR pin or force/sense architecture. | Higher initial error and no noise-reduction capability - limits use in <18-bit systems. | Choose for cost-sensitive industrial designs where 0.05% accuracy suffices and wideband noise is less critical. |
Compared with ADR4550BRZ and REF5050AIDR, the MAX6226ALA50+ uniquely combines force/sense outputs, NR pin for configurable noise reduction, and ceramic LCC packaging - making it the only option among the three qualified for automotive-grade, remote-sensing, ultra-low-drift applications.
Availability
MAX6226ALA50+ is available at Aetrix Electronics and suitable for high-accuracy industrial process control, automotive sensor signal conditioning, and metrology-grade test equipment requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for MAX6226ALA50+ 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and automotive markets since 1965.
The MAX6226 series was designed specifically for ultra-stable, ultra-low-noise voltage referencing in automotive and industrial systems demanding <±0.02% accuracy and <3ppm/°C tempco over −40°C to +125°C.
FAQ
What is the minimum input voltage required for stable operation of the MAX6226ALA50+?
The MAX6226ALA50+ requires a minimum input voltage of 5.2V to guarantee specified performance, as defined by its dropout voltage of ≤200mV at 5mA load. Operation below 5.2V may result in degraded line regulation, increased noise, or failure to maintain 5.000V output within ±0.02% accuracy. The device remains functional down to 2.7V but only for lower-output-voltage variants (e.g., MAX6226ALA25+).
Can the MAX6226ALA50+ be used without connecting the NR pin?
Yes, the MAX6226ALA50+ operates fully functional with the NR pin left unconnected. In this configuration, wideband noise is 145nV/√Hz at 1kHz. Adding a 0.1μF capacitor to NR reduces noise to 95nV/√Hz and improves AC power-supply rejection - recommended for high-SNR applications like 16-bit+ data converters.
How should the force (OUTF) and sense (OUTS) outputs be connected in a PCB layout?
For optimal accuracy, route OUTF and OUTS as a matched pair to the load. Short OUTF to OUTS physically at the load point - not at the IC - using a low-inductance connection. Place the 0.1–10μF output capacitor between OUTF and GND adjacent to the load. Avoid routing OUTF/OUTS over split planes or near noisy digital traces to preserve Kelvin sensing integrity.
Is the MAX6226ALA50+ RoHS-compliant and lead-free?
Yes, the MAX6226ALA50+ is RoHS-compliant and lead-free. The "+" suffix in the part number explicitly denotes a lead(Pb)-free/RoHS-compliant ceramic LCC package, per Analog Devices' ordering information and package documentation (Outline Number 21-100289).
What is the maximum capacitive load the MAX6226ALA50+ can drive stably?
The MAX6226ALA50+ is stable with output capacitance ranging from 0.1μF to 10μF. This range accommodates both low-ESR ceramic capacitors (for high-frequency noise suppression) and bulk electrolytic/tantalum capacitors (for transient current delivery). Stability is guaranteed across the full −40°C to +125°C temperature range and 0–10mA load current.
MAX6226ALA50+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-CLCC
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.02%
- Temperature Coefficient:
- 5ppm/°C
- Noise - 0.1Hz to 10Hz:
- 2.85µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 5.2V ~ 12.6V
- Current - Supply:
- 500µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-CLCC (3.8x3.8)
MAX6226ALA50+ FAQ
1.How can I place an order for MAX6226ALA50+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6226ALA50+ 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 MAX6226ALA50+ reliable?
The price and inventory of MAX6226ALA50+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6226ALA50+ is usually 5 days.
3.What payment methods are accepted for MAX6226ALA50+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6226ALA50+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6226ALA50+?
MAX6226ALA50+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6226ALA50+ 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 MAX6226ALA50+?
For technical support, including MAX6226ALA50+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6226ALA50+ requirements.
6.How does Aetrix verify that MAX6226ALA50+ is sourced from the original manufacturer or authorized distributors?
All MAX6226ALA50+ 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 MAX6226ALA50+ meets industry standards.
7.What is the process for return or replacement of MAX6226ALA50+?
All MAX6226ALA50+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6226ALA50+, 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 MAX6226ALA50+ part is unused and in its original packaging.
Return procedure for MAX6226ALA50+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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