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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Reference

Analog Devices Inc./Maxim Integrated MAX6126B41+T

Name: MAX6126B41+T
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX6126B41+T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX6126B41+T

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Voltage Reference

Package:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Datasheet:: MAX6126B41+T.pdf

Description:: IC VREF SERIES 0.1% 8UMAX

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Product details

Overview

MAX6126B41+T from Maxim Integrated is a high-precision, ultra-low-noise series voltage reference delivering 4.096V output with ±0.06% initial accuracy, 3ppm/°C max temperature coefficient (−40°C to +125°C), and 2.4µV_P-P (0.1Hz–10Hz) flicker noise. It operates from 4.3V to 12.6V supply, supports ±10mA load current, and enables precision ADC/DAC biasing in automotive-grade instrumentation.

For engineers reviewing the MAX6126B41+T datasheet, MAX6126B41+T pinout, MAX6126B41+T application, or MAX6126B41+T equivalent, key selection criteria include force/sense output architecture for remote sensing, 0.1µF–10µF capacitive-load stability, dropout as low as 50mV at 5mA, and thermal hysteresis of 20ppm in SO package.

Technical Context

The MAX6126B41+T implements curvature-corrected bandgap topology with laser-trimmed thin-film resistors to achieve 3ppm/°C tempco over −40°C to +125°C. Its dual-output architecture 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 120nV/√Hz to 80nV/√Hz at 1kHz via optional 0.1µF capacitor on NR pin. Supply current remains stable at 380µA (typ) across 4.3V–12.6V input, varying ≤2µA/V - enabling consistent performance in battery-backed or wide-input industrial supplies.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	4.096V ±0.06% at +25°C - matches common 12-bit DAC/ADC full-scale references.
Tempco (−40°C to +125°C)	3ppm/°C max - ensures <±72ppm total drift over full automotive range.
Flicker Noise (0.1Hz–10Hz)	2.4µV_P-P - enables sub-18-bit effective resolution in precision digitizers.
Dropout Voltage	50mV min at 5mA - allows operation with only 4.146V supply for 4.096V output.
Load Regulation	2µV/mA sourcing - maintains <20µV error across 10mA load variation.
Line Regulation	4.5µV/V max - contributes <51µV error over 4.3V–12.6V input swing.
Long-Term Stability	20ppm/1000hr (SO) - supports calibration intervals >1 year in metrology equipment.

Pinout & Package

The MAX6126B41+T is housed in an 8-pin SO package (SOIC-8), with exposed pad not electrically connected. Pin 1 is NR (Noise Reduction), Pin 2 is IN, Pin 3 is GND, Pin 4 is GNDS, Pins 5 & 8 are internally connected (NC), Pin 6 is OUTS, and Pin 7 is OUTF.

Pin/Terminal	Circuit Role	Design Meaning
NR	Noise Reduction Input	Accepts 0.1µF capacitor to reduce 1kHz wideband noise from 120nV/√Hz to 80nV/√Hz.
IN	Positive Supply Input	Operates from 4.3V to 12.6V; supply current varies ≤2µA/V for stable biasing.
GND	Power Ground Reference	Common return for internal circuitry; separate from GNDS to enable Kelvin sensing.
GNDS	Ground Sense Terminal	Connects to load ground point to cancel ground-path voltage drop in remote sensing.
OUTS	Voltage Sense Output	Provides feedback path to regulate OUTF; connects directly to load reference node.
OUTF	Voltage Force Output	Delivers regulated 4.096V to load; shorted to OUTS near load to maintain accuracy.

Key Features

Feature	Design Value
Force/Sense Output Architecture	Enables Kelvin connection to eliminate IR drop errors in precision current sources and remote ADC references.
Ultra-Low Flicker Noise	2.4µV_P-P (0.1Hz–10Hz) supports 18-bit+ effective resolution in high-end data acquisition systems.
Low Dropout Operation	50mV min dropout at 5mA allows use with low-headroom supplies like 4.2V Li-ion batteries.
Stable with Wide Capacitive Load	Guaranteed stability with 0.1µF–10µF output capacitance - accommodates ceramic, tantalum, or hybrid bypassing.
Automotive Temperature Range	Specified from −40°C to +125°C - qualified for engine control, ADAS sensor interfaces, and under-hood instrumentation.

Applications

High-Resolution A/D and D/A Converters	Precision Current Sources
Use Scenario: Reference for 16-bit+ SAR or delta-sigma ADCs in portable test equipment. IC Role / Device Role / Timing Role: Provides stable 4.096V reference voltage with <±25µV total error over temperature and load. Use Value: Enables full-scale accuracy better than 0.01% without external trimming or calibration.	Use Scenario: Two-terminal current source for 4–20mA loop transmitters in process control. IC Role / Device Role / Timing Role: Serves as precision voltage source driving MOSFET gate; OUTS/GNDS senses load-side voltage. Use Value: Eliminates line resistance error - achieves <0.02% current accuracy over 1km cable runs.
Digital Voltmeters	High-Accuracy Industrial Control
Use Scenario: Front-end reference in handheld DVMs requiring 5½-digit resolution. IC Role / Device Role / Timing Role: Supplies reference to integrating ADC; NR capacitor reduces noise floor for low-frequency measurements. Use Value: Achieves <10µV RMS noise floor - supports 0.001% reading accuracy at 10V range.	Use Scenario: Calibration reference in PLC analog I/O modules operating in factory environments. IC Role / Device Role / Timing Role: Stable 4.096V source for DACs controlling valve positioners and motor drives. Use Value: Maintains <±0.01% gain stability over 10-year field life due to 20ppm/1000hr long-term drift.

High-Resolution A/D and D/A Converters

Precision Current Sources

Use Scenario: Reference for 16-bit+ SAR or delta-sigma ADCs in portable test equipment.

IC Role / Device Role / Timing Role: Provides stable 4.096V reference voltage with <±25µV total error over temperature and load.

Use Value: Enables full-scale accuracy better than 0.01% without external trimming or calibration.

Use Scenario: Two-terminal current source for 4–20mA loop transmitters in process control.

IC Role / Device Role / Timing Role: Serves as precision voltage source driving MOSFET gate; OUTS/GNDS senses load-side voltage.

Use Value: Eliminates line resistance error - achieves <0.02% current accuracy over 1km cable runs.

Digital Voltmeters

High-Accuracy Industrial Control

Use Scenario: Front-end reference in handheld DVMs requiring 5½-digit resolution.

IC Role / Device Role / Timing Role: Supplies reference to integrating ADC; NR capacitor reduces noise floor for low-frequency measurements.

Use Value: Achieves <10µV RMS noise floor - supports 0.001% reading accuracy at 10V range.

Use Scenario: Calibration reference in PLC analog I/O modules operating in factory environments.

IC Role / Device Role / Timing Role: Stable 4.096V source for DACs controlling valve positioners and motor drives.

Use Value: Maintains <±0.01% gain stability over 10-year field life due to 20ppm/1000hr long-term drift.

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage reference applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADR4540BRZ	4.096V output, ±0.02% initial accuracy, 3ppm/°C tempco, but higher 3.5µV_P-P flicker noise and no force/sense outputs.	Lacks Kelvin sensing - unsuitable for remote current sources or long-line ADC references.	Select when highest initial accuracy is critical and line-drop compensation is unnecessary.
REF5040AIDR	4.096V output, ±0.05% initial accuracy, 3ppm/°C tempco, 2.2µV_P-P noise, but requires external 10µF bypass and has no NR pin.	No noise-reduction capacitor option - wideband noise remains at 105nV/√Hz (1kHz).	Select when lower cost and SO-8 footprint are priorities, and 80nV/√Hz noise is acceptable.

Compared with ADR4540BRZ and REF5040AIDR, the MAX6126B41+T uniquely combines force/sense architecture, 0.1µF–10µF capacitive-load stability, and NR-capacitor-enabled 80nV/√Hz wideband noise - making it optimal for remote-sensing, low-noise, and wide-supply industrial designs.

Availability

MAX6126B41+T is available at Aetrix Electronics and suitable for high-resolution data acquisition, precision current sourcing, and automotive-grade instrumentation requiring stable component supply across extended temperature ranges.

Supply support for MAX6126B41+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 precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.

The MAX6126 family delivers ultra-high-precision, ultra-low-noise series voltage references optimized for metrology-grade instrumentation, high-bit-count converters, and systems requiring long-term stability and remote sensing capability.

FAQ

What is the maximum allowable supply voltage for MAX6126B41+T?

The MAX6126B41+T supports a supply voltage range of 4.3V to 12.6V. Absolute maximum rating for IN is +13V, but operation above 12.6V is not guaranteed and may degrade long-term reliability. For stable 4.096V output, VIN must exceed VOUT by at least 50mV (dropout) under all load and temperature conditions.

Does MAX6126B41+T require an external resistor for operation?

No, the MAX6126B41+T is a series-mode voltage reference and does not require an external resistor. Unlike shunt-mode references, its supply current is virtually independent of supply voltage (≤2µA/V variation), simplifying design and improving efficiency in battery-powered or wide-input applications.

How does the force/sense architecture of MAX6126B41+T improve accuracy?

The MAX6126B41+T uses separate OUTF (force) and OUTS (sense) pins to implement Kelvin sensing. By routing OUTF to the load while connecting OUTS directly to the load's reference node, voltage drops across PCB traces or cables are excluded from regulation - maintaining 4.096V accuracy at the point of use, even with 1Ω line resistance.

Can MAX6126B41+T drive a 10µF output capacitor?

Yes, the MAX6126B41+T is stable with output capacitance from 0.1µF to 10µF. A 10µF capacitor improves transient response for rapidly changing loads, such as switching ADC drivers, and reduces output ripple. Place the capacitor as close as possible to the OUTF pin with low-ESR construction for optimal performance.

What is the purpose of the NR pin on MAX6126B41+T?

The NR (Noise Reduction) pin on MAX6126B41+T accepts an external 0.1µF capacitor to reduce wideband noise from 120nV/√Hz to 80nV/√Hz at 1kHz. It also lowers 0.1Hz–10Hz flicker noise to 0.9µV_P-P when used - critical for high-resolution, low-frequency measurement systems where noise dominates error budget.

MAX6126B41+T Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Package/Case:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Reference Type:: Series

Output Type:: Fixed

Voltage - Output (Min/Fixed):: 4.096V

Voltage - Output (Max):: -

Current - Output:: 10 mA

Tolerance:: ±0.1%

Temperature Coefficient:: 12ppm/°C

Noise - 0.1Hz to 10Hz:: 2.4µVp-p

Noise - 10Hz to 10kHz:: -

Voltage - Input:: 4.3V ~ 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

MAX6126B41+T FAQ

1.How can I place an order for MAX6126B41+T through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX6126B41+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 MAX6126B41+T reliable?

The price and inventory of MAX6126B41+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6126B41+T is usually 5 days.

3.What payment methods are accepted for MAX6126B41+T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6126B41+T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX6126B41+T?

MAX6126B41+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX6126B41+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 MAX6126B41+T?

For technical support, including MAX6126B41+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6126B41+T requirements.

6.How does Aetrix verify that MAX6126B41+T is sourced from the original manufacturer or authorized distributors?

All MAX6126B41+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 MAX6126B41+T meets industry standards.

7.What is the process for return or replacement of MAX6126B41+T?

All MAX6126B41+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6126B41+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 MAX6126B41+T part is unused and in its original packaging.

Return procedure for MAX6126B41+T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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