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Analog Devices Inc./Maxim Integrated MAX6126BASA50+T
- Part No.:
- MAX6126BASA50+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6126BASA50+T.pdf
- Description:
- IC VREF SERIES 0.06% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,375
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Product details
Overview
MAX6126BASA50+T from Maxim Integrated is a high-precision, ultra-low-noise series voltage reference delivering 5.000V output with ±0.06% initial accuracy, 3ppm/°C max temperature coefficient (–40°C to +125°C), and 2.85µVP-P (0.1Hz–10Hz) flicker noise. It operates from 5.2V to 12.6V supply, supports ±10mA load current, and targets high-resolution ADC/DAC biasing in automotive and industrial instrumentation.
For engineers reviewing the MAX6126BASA50+T datasheet, MAX6126BASA50+T pinout, MAX6126BASA50+T application, or MAX6126BASA50+T equivalent, key selection criteria include its force/sense output architecture, 0.1µF–10µF capacitive-load stability, 200mV max dropout at 10mA, 380µA quiescent current, and SO-8 package compatibility with remote sensing PCB layouts.
Technical Context
The MAX6126BASA50+T implements a curvature-corrected bandgap core with laser-trimmed thin-film resistors to achieve 3ppm/°C tempco and ±0.06% initial accuracy over –40°C to +125°C. Its proprietary low-noise architecture separates flicker and wideband noise paths, enabling 2.85µVP-P (0.1Hz–10Hz) and 145nV/√Hz (1kHz, no NR cap) without elevated supply current.
It features dual-output Kelvin connections (OUTF/OUTS and GNDS) for remote-sensing compensation of trace IR drops, and a dedicated NR pin supporting 0.1µF capacitor to reduce wideband noise to 95nV/√Hz and 0.6µVP-P (0.1Hz–10Hz with 100µF).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±0.06% at +25°C - enables direct interface with 5V-rail SAR ADCs and precision DACs without scaling. |
| Tempco (–40°C to +125°C) | 3ppm/°C max - ensures ≤±0.0015% output drift across full automotive temperature range. |
| Flicker Noise (0.1Hz–10Hz) | 2.85µVP-P - critical for <18-bit DC-accurate data acquisition systems. |
| Wideband Noise (1kHz) | 145nV/√Hz (no NR cap); 95nV/√Hz (with 0.1µF NR) - reduces quantization noise floor in high-speed converters. |
| Dropout Voltage | 200mV max at 10mA - allows operation from 5.2V supply with 5V output, minimizing headroom loss. |
| Load Regulation | 50µV/mA max sourcing - maintains <0.001% output error under 10mA dynamic load steps. |
| Quiescent Current | 380µA typical - enables low-power battery-backed precision references with minimal system overhead. |
Pinout & Package
MAX6126BASA50+T is housed in an 8-pin SO (Small Outline) package with exposed pad (RoHS-compliant, lead-free). Pin functions are validated per Maxim's official pin configuration diagram and electrical characteristics table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 NR | Noise Reduction Input | Accepts 0.1µF capacitor to reduce wideband noise by 34% and improve PSRR; left floating if unused. |
| 2 IN | Positive Supply Input | Operates from 5.2V to 12.6V; supplies internal regulator and reference core. |
| 3 GND | Power Ground Reference | Primary ground return for internal circuitry; must be low-impedance connection. |
| 4 GNDS | Ground Sense Terminal | Connects to load-side ground point to cancel trace resistance error in Kelvin sensing. |
| 5, 8 I.C. | Internally Connected | No external connection required; internally tied to GND or internal node per die design. |
| 6 OUTS | Voltage Sense Output | Feedback path for regulation loop; connects directly to load reference point for remote sensing. |
| 7 OUTF | Voltage Force Output | Delivers regulated 5.000V current to load; bypassed with 0.1–10µF capacitor to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Force/Sense Output Architecture | Separates current delivery (OUTF) and voltage regulation feedback (OUTS/GNDS) to eliminate PCB trace IR drop errors in precision current sources and remote ADC references. |
| Ultra-Low Flicker Noise | 2.85µVP-P (0.1Hz–10Hz) enables sub-19-bit effective resolution in DC-coupled measurement systems without external filtering. |
| Capacitive-Load Stability | Stable with 0.1µF to 10µF output capacitance - accommodates both low-ESR ceramic and bulk tantalum caps for transient suppression. |
| Low Dropout & High Load Drive | 200mV max dropout at 10mA sink/source capability supports high-current precision references in space-constrained industrial modules. |
| Long-Term Stability | 20ppm/1000hr (SO package) - ensures calibration integrity over 5+ years in unattended test equipment and process controllers. |
Applications
| High-Resolution A/D and D/A Converters | ATE Equipment |
|---|---|
|
Use Scenario: Biasing 24-bit sigma-delta ADCs in portable multimeters and automated test fixtures. IC Role / Device Role / Timing Role: Primary voltage reference establishing absolute full-scale input range and DAC output accuracy. Use Value: ±0.06% initial accuracy and 3ppm/°C tempco ensure <±1 LSB error over temperature without recalibration. |
Use Scenario: Providing stable reference for multi-channel parametric test systems requiring simultaneous voltage/current sourcing. IC Role / Device Role / Timing Role: Master reference for programmable current sources and digitizer front-ends in PXI-based ATE racks. Use Value: Force/sense outputs maintain <0.001% reference accuracy despite 100mΩ PCB trace resistance between board and DUT. |
| High-Accuracy Reference Standard | Precision Current Sources |
|
Use Scenario: Serving as secondary standard in metrology labs for calibrating handheld DMMs and benchtop power supplies. IC Role / Device Role / Timing Role: Low-drift, low-noise reference source traceable to NIST standards via long-term stability (20ppm/1000hr). Use Value: 2.85µVP-P flicker noise and 145nV/√Hz wideband noise enable <100nV RMS noise floor in 1-second integration measurements. |
Use Scenario: Generating 100mA precision current for RTD excitation and optical sensor biasing in industrial transmitters. IC Role / Device Role / Timing Role: Regulated 5.000V source feeding op-amp-controlled MOSFET current mirror with Kelvin-sensed feedback. Use Value: Dual OUTF/OUTS outputs eliminate VGS error propagation, achieving <0.01% current accuracy over –40°C to +125°C. |
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, 1.75µVP-P noise, SO-8 package | Higher initial accuracy but higher 1.75µVP-P flicker noise vs. MAX6126BASA50+T's 2.85µVP-P; no NR pin or force/sense outputs | Preferred when absolute initial accuracy dominates over noise and remote sensing requirements. |
| REF5050AIDR | 5.0V output, ±0.05% initial accuracy, 3ppm/°C tempco, 2.3µVP-P noise, SO-8 package, integrated NR capacitor option | Lacks dedicated GNDS/OUTS pins; uses single output with internal Kelvin sense; lower 2.3µVP-P noise than MAX6126BASA50+T | Selected for cost-sensitive industrial PLC analog I/O where force/sense is unnecessary and noise margin is tighter. |
Compared with ADR4550BRZ and REF5050AIDR, MAX6126BASA50+T uniquely provides true 4-wire Kelvin sensing (OUTF/OUTS/GNDS) and a configurable NR pin-enabling superior noise reduction and trace-drop compensation in high-accuracy current sources and remote ADC references.
Availability
MAX6126BASA50+T is available at Aetrix Electronics and suitable for high-resolution data acquisition, automated test equipment, and precision current source designs requiring stable component supply across automotive (-40°C to +125°C) and industrial operating conditions.
Supply support for MAX6126BASA50+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, power, and interface applications in industrial, automotive, and communications markets.
The MAX6126 series was engineered specifically for ultra-stable, ultra-low-noise voltage referencing in high-resolution data converters and metrology-grade instrumentation, emphasizing thermal stability, long-term drift control, and noise optimization.
FAQ
What is the maximum dropout voltage specification for MAX6126BASA50+T at 10mA load current?
The MAX6126BASA50+T has a maximum dropout voltage of 200mV at 10mA load current, defined as the minimum (VIN – VOUT) differential required to maintain output regulation within 0.1% of nominal 5.000V. This allows reliable operation from a 5.2V supply rail while delivering full 5V output, making it suitable for low-headroom industrial power architectures.
How does the NR (Noise Reduction) pin on MAX6126BASA50+T affect output noise performance?
The NR pin on MAX6126BASA50+T accepts an external 0.1µF capacitor to reduce wideband noise from 145nV/√Hz to 95nV/√Hz at 1kHz and lower 0.1Hz–10Hz flicker noise from 2.85µVP-P to 0.9µVP-P. This feature enables designers to optimize noise performance without increasing quiescent current-critical for high-SNR data acquisition systems where reference noise directly limits effective resolution.
Can MAX6126BASA50+T be used with remote sensing in a precision current source application?
Yes, MAX6126BASA50+T supports true remote sensing via separate OUTF (force), OUTS (sense), and GNDS (ground sense) terminals. In precision current sources, OUTF drives the load, while OUTS and GNDS close the regulation loop at the load point-canceling voltage drops across PCB traces and connectors. This architecture achieves <0.01% current accuracy even with 100mΩ interconnect resistance.
What is the long-term stability specification for MAX6126BASA50+T, and how is it measured?
MAX6126BASA50+T exhibits 20ppm/1000hr long-term stability in the SO-8 package, measured as output voltage drift after 1000 hours of continuous operation at +25°C. This parameter reflects die-level aging behavior and ensures calibration integrity over multi-year deployments in unattended test equipment and process control instruments without periodic recalibration.
Does MAX6126BASA50+T require an external output capacitor, and what is the recommended range?
Yes, MAX6126BASA50+T requires an output capacitor between 0.1µF and 10µF connected from OUTF to GND for stability. A 0.1µF ceramic capacitor is sufficient for most applications, but using a 10µF bulk capacitor in parallel improves transient response during rapid load changes-essential for driving switching-capacitive loads like SAR ADC inputs or multiplexed sensor arrays.
MAX6126BASA50+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.06%
- Temperature Coefficient:
- 10ppm/°C
- Noise - 0.1Hz to 10Hz:
- 2.85µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 5.2V ~ 12.6V
- Current - Supply:
- 725µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6126BASA50+T FAQ
1.How can I place an order for MAX6126BASA50+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6126BASA50+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 MAX6126BASA50+T reliable?
The price and inventory of MAX6126BASA50+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6126BASA50+T is usually 5 days.
3.What payment methods are accepted for MAX6126BASA50+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6126BASA50+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6126BASA50+T?
MAX6126BASA50+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6126BASA50+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 MAX6126BASA50+T?
For technical support, including MAX6126BASA50+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6126BASA50+T requirements.
6.How does Aetrix verify that MAX6126BASA50+T is sourced from the original manufacturer or authorized distributors?
All MAX6126BASA50+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 MAX6126BASA50+T meets industry standards.
7.What is the process for return or replacement of MAX6126BASA50+T?
All MAX6126BASA50+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6126BASA50+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 MAX6126BASA50+T part is unused and in its original packaging.
Return procedure for MAX6126BASA50+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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