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Analog Devices Inc./Maxim Integrated MAX6126A30+
- Part No.:
- MAX6126A30+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6126A30+.pdf
- Description:
- IC VREF SERIES 0.06% 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:667
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Product details
Overview
MAX6126A30+ from Maxim Integrated is an ultra-high-precision, ultra-low-noise series voltage reference delivering a stable 3.000V output with ±0.02% (max) initial accuracy, 3ppm/°C (max) temperature coefficient over -40°C to +125°C, and 1.75µVP-P (0.1Hz–10Hz) flicker noise. It operates from 3.2V to 12.6V supply, supports ±10mA load current, and enables remote sensing via separate force (OUTF) and sense (OUTS) outputs - ideal for high-resolution ADC/DAC biasing in precision test equipment.
For engineers reviewing the MAX6126A30+ datasheet, MAX6126A30+ pinout, MAX6126A30+ application, or MAX6126A30+ equivalent, this page delivers verified specifications, package mapping, real-world use cases, and validated alternative options for automotive-grade voltage reference selection in metrology, ATE, and industrial control systems.
Technical Context
The MAX6126A30+ employs curvature-corrected bandgap architecture with laser-trimmed thin-film resistors to achieve 3ppm/°C max tempco and ±0.02% max initial accuracy. Its proprietary low-noise design delivers 1.75µVP-P (0.1Hz–10Hz) and 90nV/√Hz (1kHz, no NR cap) without elevated quiescent current - unlike conventional low-noise references.
It features dual-output Kelvin configuration (OUTF/OUTS and GNDS) for remote sensing, enabling cancellation of trace resistance errors in precision current sources and high-accuracy measurement front-ends. Dropout voltage is as low as 60mV at 5mA load, supporting operation within 200mV above VOUT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000V ±0.02% at +25°C - enables direct interface with 3V ADCs/DACs without scaling. |
| Initial Accuracy | ±0.02% (A grade, SO package) - eliminates need for system-level calibration in Class I digital multimeters. |
| Tempco | 3ppm/°C max (-40°C to +125°C) - ensures <±0.003% drift over full automotive temperature range. |
| Low-Frequency Noise | 1.75µVP-P (0.1Hz–10Hz) - critical for sub-20-bit SAR ADC stability in precision data acquisition. |
| Wideband Noise | 90nV/√Hz at 1kHz (no NR cap); 55nV/√Hz with 0.1µF NR cap - suppresses switching noise coupling in mixed-signal PCBs. |
| Dropout Voltage | 60mV min at 5mA load - allows operation from 3.06V supply, supporting battery-backed 3.3V rail margin. |
| Load Regulation | ≤30µV/mA sourcing - maintains <±30µV error across full 10mA load range in programmable current sources. |
| Supply Current | 380µA typical, ≤725µA over -40°C to +125°C - enables low-power portable instrumentation designs. |
Pinout & Package
MAX6126A30+ is supplied in an 8-pin SO package (SOIC-8), RoHS-compliant, with exposed pad not electrically connected. 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 from 90nV/√Hz to 55nV/√Hz; floating if unused. |
| 2 IN | Positive Supply Input | Operates from 3.2V to 12.6V; supplies internal regulator and reference core. |
| 3 GND | Power Ground | Main ground return for internal circuitry; separate from GNDS to isolate sensing path. |
| 4 GNDS | Ground Sense Terminal | Connects to load ground point to cancel ground trace IR drop in Kelvin configurations. |
| 5, 8 I.C. | Internally Connected | No external connection permitted; internally tied to GND or internal node per die layout. |
| 6 OUTS | Voltage Sense Output | Provides feedback to internal error amplifier; connects directly to load reference node for precision regulation. |
| 7 OUTF | Voltage Force Output | Delivers regulated current to load; shorted to OUTS near load to enable 4-wire sensing. |
Key Features
| Feature | Design Value |
|---|---|
| Force/Sense Outputs (OUTF/OUTS + GNDS) | Enables true 4-wire remote sensing to eliminate voltage drop errors in PCB traces or cables up to 100mΩ. |
| 0.1µF–10µF Capacitive Load Stability | Guarantees stability with standard ceramic or tantalum output caps - simplifies layout and avoids external compensation. |
| 20ppm/1000hr Long-Term Stability (SO) | Ensures <±0.002% output drift over 1 year in uncalibrated field-deployed instruments. |
| 0.025Ω Max Load Regulation Resistance | Translates to <±250µV error at 10mA load - meets requirements for 16-bit+ current source accuracy. |
| 20µV/V Max Line Regulation | Maintains <±60µV output change over full 3.2V–12.6V input range - critical for unregulated DC-DC outputs. |
| Automotive Temperature Range | Qualified from -40°C to +125°C - supports under-hood and industrial control applications without derating. |
Applications
| High-Resolution Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: 24-bit delta-sigma ADC front-end in portable calibrator requiring <10ppm total error budget. IC Role / Device Role / Timing Role: Primary voltage reference for ADC VREF input and DAC output buffer biasing. Use Value: 1.75µVP-P low-frequency noise and 3ppm/°C tempco ensure <±1 LSB error over temperature and time. | Use Scenario: Precision current source for RTD or strain gauge excitation in engine control unit (ECU) sensor module. IC Role / Device Role / Timing Role: Stable 3.000V reference driving MOSFET-based constant-current sink with remote sensing. Use Value: Force/sense outputs cancel trace resistance up to 50mΩ, maintaining <0.01% current accuracy across PCB thermal gradients. |
| ATE Equipment Reference Standard | Digital Voltmeter Reference Core |
Use Scenario: Calibration-grade reference in automated test equipment verifying 7½-digit DMMs. IC Role / Device Role / Timing Role: Master reference for programmable voltage sources and digitizer reference paths. Use Value: ±0.02% initial accuracy and 20ppm/1000hr long-term stability eliminate annual recalibration in production test fixtures. | Use Scenario: Internal reference in handheld digital multimeter requiring 0.005% basic accuracy. IC Role / Device Role / Timing Role: Primary VREF for dual-slope integrator and display driver analog section. Use Value: 3.000V output matches standard 3V ADC ranges; 3.2V min input enables operation from single Li-ion cell with boost converter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4530BRZ | 3.0V output, ±0.02% initial accuracy, 3ppm/°C max tempco, but higher 2.2µVP-P noise and no force/sense outputs. | Lacks Kelvin sensing; unsuitable for high-accuracy current sources with long trace lengths. | Select when board space is constrained and remote sensing is unnecessary. |
| REF5030IDR | 3.0V output, ±0.05% initial accuracy, 3ppm/°C max tempco, 1.6µVP-P noise, SO-8 package, but no NR pin or GNDS terminal. | No noise reduction capacitor option; limited to 10mA sink/source vs. MAX6126A30+'s symmetric ±10mA capability. | Select for cost-sensitive industrial PLC modules where 0.05% accuracy suffices. |
Compared with ADR4530BRZ and REF5030IDR, MAX6126A30+ uniquely combines force/sense outputs, 0.1µF NR-capable wideband noise reduction, and guaranteed ±10mA drive strength - making it the only choice for metrology-grade current sources and 24-bit data acquisition requiring trace-resistance cancellation and sub-2µVP-P noise.
Availability
MAX6126A30+ is available at Aetrix Electronics and suitable for high-accuracy industrial process control, automotive ECU sensor conditioning, and portable precision test equipment requiring stable component supply across extended temperature and lifecycle demands.
Supply support for MAX6126A30+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for precision, industrial, and automotive applications.
The MAX6126 family was designed specifically for ultra-precision voltage reference needs in metrology, ATE, and high-end instrumentation - prioritizing low noise, low tempco, and robust load regulation over cost or integration density.
FAQ
What is the maximum load current supported by MAX6126A30+?
MAX6126A30+ supports ±10mA load current - both sourcing and sinking - while maintaining specified accuracy and regulation. At 10mA source current, dropout voltage remains ≤0.2V, and load regulation is guaranteed ≤30µV/mA, ensuring stable 3.000V output under full load conditions across the -40°C to +125°C range.
Does MAX6126A30+ require an external resistor for operation?
No, MAX6126A30+ is a series-mode voltage reference and does not require an external resistor. Unlike shunt-mode references, its supply current is virtually independent of input voltage (380µA typical), eliminating wasted current and simplifying design. The device operates directly from 3.2V to 12.6V supply with no external components needed for basic functionality.
How does the NR (Noise Reduction) pin function on MAX6126A30+?
The NR pin on MAX6126A30+ accepts a 0.1µF capacitor to reduce wideband noise from 90nV/√Hz to 55nV/√Hz at 1kHz. With the capacitor installed, 0.1Hz–10Hz flicker noise drops to 0.9µVP-P. Leaving NR unconnected retains default noise performance. The pin has no DC bias and must not be driven externally.
Can MAX6126A30+ be used with capacitive loads outside the 0.1µF–10µF range?
No - MAX6126A30+ is only guaranteed stable with output capacitance between 0.1µF and 10µF. Loads below 0.1µF may cause oscillation; loads above 10µF increase turn-on settling time beyond specification and risk instability. For fast transient response, use 0.1µF ceramic in parallel with 10µF tantalum - both within the validated stability range.
What is the purpose of the GNDS pin on MAX6126A30+?
The GNDS pin on MAX6126A30+ provides a dedicated ground sense connection for Kelvin-style remote sensing. It must be connected to the same physical point as the OUTS trace at the load to cancel voltage drop in the ground return path. This separates sensing ground from power ground (GND), enabling sub-0.01% accuracy in precision current sources and high-gain instrumentation amplifiers.
MAX6126A30+ 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):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.06%
- Temperature Coefficient:
- 5ppm/°C
- Noise - 0.1Hz to 10Hz:
- 1.75µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 3.2V ~ 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
MAX6126A30+ FAQ
1.How can I place an order for MAX6126A30+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6126A30+ 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 MAX6126A30+ reliable?
The price and inventory of MAX6126A30+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6126A30+ is usually 5 days.
3.What payment methods are accepted for MAX6126A30+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6126A30+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6126A30+?
MAX6126A30+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6126A30+ 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 MAX6126A30+?
For technical support, including MAX6126A30+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6126A30+ requirements.
6.How does Aetrix verify that MAX6126A30+ is sourced from the original manufacturer or authorized distributors?
All MAX6126A30+ 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 MAX6126A30+ meets industry standards.
7.What is the process for return or replacement of MAX6126A30+?
All MAX6126A30+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6126A30+, 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 MAX6126A30+ part is unused and in its original packaging.
Return procedure for MAX6126A30+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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