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Analog Devices Inc./Maxim Integrated MAX6126B50+
- Part No.:
- MAX6126B50+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6126B50+.pdf
- Description:
- IC VREF SERIES 0.1% 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:351
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Product details
Overview
MAX6126B50+ 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 enables precision ADC/DAC biasing in automotive-grade instrumentation.
For engineers reviewing the MAX6126B50+ datasheet, MAX6126B50+ pinout, MAX6126B50+ application, or MAX6126B50+ equivalent, key selection criteria include its force/sense outputs for remote sensing, 0.2V max dropout at 10mA, 380µA quiescent current, and stability with 0.1µF–10µF capacitive loads across –40°C to +125°C.
Technical Context
The MAX6126B50+ uses curvature-corrected bandgap architecture with laser-trimmed thin-film resistors to achieve 3ppm/°C tempco and ±0.06% initial accuracy over automotive temperature range. Its dual-output topology separates force (OUTF) and sense (OUTS) paths to eliminate line-drop errors in high-accuracy current sources and remote-sensing applications.
Wideband noise is reduced from 145nV/√Hz to 95nV/√Hz (1kHz) via optional 0.1µF capacitor on NR pin, while maintaining supply current independence from VIN-varying only ≤2µA/V. Dropout voltage remains ≤0.2V at 5mA load, enabling operation with minimal headroom.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±0.06% at +25°C - precise reference for 16-bit+ SAR ADCs and metrology-grade DACs. |
| Tempco (–40°C to +125°C) | 3ppm/°C max - ensures <±0.3mV drift over full automotive range, critical for closed-loop sensor conditioning. |
| Flicker Noise (0.1Hz–10Hz) | 2.85µVP-P - enables sub-20-bit ENOB in high-resolution data acquisition systems. |
| Dropout Voltage | 0.2V max at 5mA - allows use with low-headroom supplies like 5.2V LDOs in compact power rails. |
| Quiescent Current | 380µA typical - stable across 5.2V–12.6V input, simplifying power budgeting in always-on modules. |
| Load Regulation | 50µV/mA max sourcing - maintains <±0.5mV error at full 10mA load, suitable for driving precision op-amp bias networks. |
| Capacitive Load Range | 0.1µF to 10µF - accommodates ceramic bypass and bulk capacitance without oscillation in noisy industrial environments. |
Pinout & Package
MAX6126B50+ is housed in an 8-pin SO package (SOIC) with exposed pad for thermal performance. Pin assignments are validated per Maxim's official pin configuration diagram and electrical characteristics table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| NR | Noise Reduction | Accepts 0.1µF capacitor to reduce wideband noise from 145nV/√Hz to 95nV/√Hz; left open if unused. |
| IN | Positive Supply Input | Accepts 5.2V–12.6V input; requires local 0.1µF bypass to GND for PSRR optimization. |
| GND | Power Ground | Primary ground return for internal circuitry; separate from GNDS to enable Kelvin sensing. |
| GNDS | Ground Sense | Connects to load-side ground point to cancel ground-path voltage drop in remote-sensing configurations. |
| OUTS | Voltage Sense Output | Provides feedback path to internal regulator; connects directly to load-side reference node for accuracy. |
| OUTF | Voltage Force Output | Delivers regulated 5.000V current to load; shorted to OUTS near load to minimize trace resistance impact. |
| Pins 5 & 8 | Internally Connected | No external connection permitted; internal test nodes not accessible to user circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Force/Sense Outputs (OUTF/OUTS) | Enables 4-wire Kelvin connection to eliminate voltage drop errors in long-trace or high-current precision current sources. |
| Ultra-Low Flicker Noise | 2.85µVP-P (0.1Hz–10Hz) supports <20-bit effective resolution in DC-coupled measurement front-ends. |
| Low Dropout Operation | 0.2V max dropout at 5mA allows integration into 5.2V supply rails without additional regulation overhead. |
| Automotive Temperature Range | Specified from –40°C to +125°C with 3ppm/°C tempco - qualified for under-hood sensor modules and ADAS ECUs. |
| Stable with Wide Capacitance Range | Guaranteed stability with 0.1µF–10µF output capacitance - eliminates need for external compensation in diverse PCB layouts. |
Applications
| High-Resolution Data Acquisition | Precision Industrial Current Sources |
|---|---|
Use Scenario: 24-bit delta-sigma ADC system in portable gas analyzer requiring stable 5V reference for ratiometric sensor excitation and digitization. IC Role / Device Role / Timing Role: Primary voltage reference supplying OUTF to ADC VREF pin and OUTS to bridge sensor excitation amplifier feedback node. Use Value: 3ppm/°C tempco and 2.85µVP-P noise ensure <±1 LSB error over temperature and time, meeting IEC 61000-4-3 immunity requirements. | Use Scenario: 4–20mA transmitter module for pressure transducers in oil & gas field instruments operating at –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Force/sense reference generating precise 5.000V across shunt resistor; GNDS tied to loop ground at field device terminal block. Use Value: Remote sensing cancels up to 100mΩ of wiring resistance, maintaining 0.1% current accuracy despite 100m cable runs. |
| Digital Voltmeters (DVM) | ATE Equipment Reference Standards |
Use Scenario: Benchtop 7½-digit DVM requiring ultra-stable 5V reference for autoranging ADC and internal calibration routines. IC Role / Device Role / Timing Role: Primary reference source feeding both main ADC and self-calibration DAC; NR pin fitted with 0.1µF cap to suppress switching noise from digital subsystem. Use Value: 20ppm/1000hr long-term stability reduces recalibration frequency from quarterly to annually, lowering TCO. | Use Scenario: Automated test equipment channel card needing traceable, low-drift reference for parametric testing of analog ICs at production volume. IC Role / Device Role / Timing Role: Master reference for multiple DUT bias rails; OUTF drives parallel DACs while OUTS feeds precision comparator threshold circuits. Use Value: ±0.06% initial accuracy and 3ppm/°C tempco meet MIL-STD-883 Class B screening requirements for ATE reliability. |
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 higher 3.75µVP-P flicker noise and no force/sense outputs. | Lacks remote sensing capability; unsuitable for high-accuracy current sources with long traces. | Select when ultimate initial accuracy is prioritized over noise and remote sensing. |
| REF5050IDR | 5.0V output, ±0.05% initial accuracy, 3ppm/°C tempco, 3.5µVP-P noise, and single-output architecture. | No NR pin or force/sense separation; requires external Kelvin routing for equivalent performance. | Choose for cost-sensitive designs where board space permits discrete Kelvin layout. |
Compared with ADR4550BRZ and REF5050IDR, MAX6126B50+ uniquely integrates force/sense outputs and NR pin for noise reduction-enabling superior system-level accuracy in current-source and remote-load applications without added components or layout complexity.
Availability
MAX6126B50+ is available at Aetrix Electronics and suitable for high-accuracy industrial process control, automotive sensor modules, and automated test equipment requiring stable component supply across extended temperature ranges.
Supply support for MAX6126B50+ 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, automotive, and communications applications.
The MAX6126 family targets ultra-high-precision voltage references where low noise, tight tempco, and force/sense architecture are essential for metrology, instrumentation, and sensor signal chains.
FAQ
What is the maximum dropout voltage specification for MAX6126B50+ at 10mA load current?
The MAX6126B50+ has a maximum dropout voltage of 0.4V at 10mA load current, defined as the minimum (VIN – VOUT) differential required to maintain output regulation within 0.1% of 5.000V. This value is specified across –40°C to +125°C and enables operation with 5.2V input supplies in automotive and industrial systems.
Can MAX6126B50+ be used with a 0.1µF output capacitor, and what is the minimum recommended value?
Yes, MAX6126B50+ is stable with a 0.1µF output capacitor, which is the minimum recommended value per the datasheet. The device guarantees stability across 0.1µF to 10µF, allowing designers to select ceramic or tantalum types based on ESR and transient response requirements without risk of oscillation.
How does the NR (Noise Reduction) pin function on MAX6126B50+, and what capacitor value is recommended?
The NR pin on MAX6126B50+ accepts an external capacitor to reduce wideband noise. A 0.1µF capacitor lowers 1kHz noise from 145nV/√Hz to 95nV/√Hz and reduces 0.1Hz–10Hz flicker noise to 0.9µVP-P. Larger values (e.g., 100µF) further reduce low-frequency noise to 0.6µVP-P, but increase turn-on settling time to 20ms.
What is the purpose of separate GNDS and GND pins on MAX6126B50+, and how should they be connected?
The GNDS pin on MAX6126B50+ provides a dedicated ground-sense connection for Kelvin-style remote sensing. It must be routed to the exact same point as the load's ground return-separate from the main GND pin-to cancel voltage drop in the ground path. GND serves the internal circuitry and should connect to the local power ground plane.
Is MAX6126B50+ qualified for automotive applications, and what temperature range does it support?
Yes, MAX6126B50+ is qualified for automotive applications with guaranteed operation from –40°C to +125°C. Its 3ppm/°C max temperature coefficient and 20ppm/1000hr long-term stability meet AEC-Q100 stress test requirements for engine control, ADAS, and body electronics modules.
MAX6126B50+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 12ppm/°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-uMAX/uSOP
MAX6126B50+ FAQ
1.How can I place an order for MAX6126B50+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6126B50+ 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 MAX6126B50+ reliable?
The price and inventory of MAX6126B50+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6126B50+ is usually 5 days.
3.What payment methods are accepted for MAX6126B50+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6126B50+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6126B50+?
MAX6126B50+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6126B50+ 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 MAX6126B50+?
For technical support, including MAX6126B50+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6126B50+ requirements.
6.How does Aetrix verify that MAX6126B50+ is sourced from the original manufacturer or authorized distributors?
All MAX6126B50+ 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 MAX6126B50+ meets industry standards.
7.What is the process for return or replacement of MAX6126B50+?
All MAX6126B50+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6126B50+, 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 MAX6126B50+ part is unused and in its original packaging.
Return procedure for MAX6126B50+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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