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Analog Devices Inc./Maxim Integrated MAX6126A41+T
- Part No.:
- MAX6126A41+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6126A41+T.pdf
- Description:
- IC VREF SERIES 0.06% 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,488
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Product details
Overview
MAX6126A41+T from Maxim Integrated is an ultra-high-precision, ultra-low-noise series voltage reference delivering a stable 4.096V output with ±0.02% (max) initial accuracy, 3ppm/°C (max) temperature coefficient over -40°C to +125°C, and 2.4µVP-P (0.1Hz–10Hz) flicker noise. It operates from 4.3V to 12.6V supply, supports ±10mA load current, and enables remote sensing via force/sense outputs - ideal for high-resolution 16-bit ADCs in industrial data acquisition systems.
For engineers reviewing the MAX6126A41+T datasheet, MAX6126A41+T pinout, MAX6126A41+T application, or MAX6126A41+T equivalent, this page delivers verified specifications, package-aware pin functions, real-world use cases in precision metrology and ATE, and two validated alternative parts with documented technical and application differences.
Technical Context
The MAX6126A41+T employs curvature-correction circuitry and laser-trimmed thin-film resistors to achieve 3ppm/°C max tempco and ±0.02% max initial accuracy. Its proprietary low-noise architecture delivers 2.4µVP-P (0.1Hz–10Hz) and 80nV/√Hz (1kHz, no NR cap) without elevated quiescent current - maintaining only 380µA typical IIN.
It features independent force (OUTF) and sense (OUTS) outputs plus ground-sense (GNDS) for Kelvin connections, enabling <0.025Ω load regulation and cancellation of trace IR drops. The NR pin accepts a 0.1µF capacitor to reduce wideband noise to 66nV/√Hz and 0.1Hz–10Hz noise to ≤0.9µVP-P.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.02% at +25°C - matches common 12-bit DAC full-scale and 16-bit SAR ADC reference points. |
| Tempco (–40°C to +125°C) | ≤5ppm/°C (A grade SO) - ensures <±80ppm drift across automotive temperature range. |
| Flicker Noise (0.1Hz–10Hz) | 2.4µVP-P - enables sub-16-bit effective resolution in precision digitizers without external filtering. |
| Wideband Noise (1kHz) | 120nV/√Hz (no NR cap); 80nV/√Hz (with 0.1µF NR) - reduces noise floor in high-speed data converters. |
| Dropout Voltage | ≤0.2V at 5mA load - allows operation from 4.3V supply while maintaining regulation for 4.096V output. |
| Load Regulation | ≤40µV/mA sourcing - holds output error <±400µV over full ±10mA load range. |
| Supply Current | 380µA typical, ≤725µA over –40°C to +125°C - enables low-power battery-backed precision systems. |
Pinout & Package
MAX6126A41+T is supplied in an 8-pin SO package (SOIC-8), with exposed pad for thermal performance. 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 (Pin 1) | Noise reduction input | Accepts 0.1µF capacitor to reduce 1kHz noise from 120nV/√Hz to 80nV/√Hz and 0.1Hz–10Hz noise to ≤0.9µVP-P. |
| IN (Pin 2) | Positive supply input | Operates from 4.3V to 12.6V; supply current virtually independent of VIN (±2µA/V variation). |
| GND (Pin 3) | Power ground reference | Primary ground return for internal circuitry; separate from GNDS to enable Kelvin sensing. |
| GNDS (Pin 4) | Ground sense terminal | Connects to load-side ground point to cancel ground trace voltage drop in remote sensing configurations. |
| OUTS (Pin 6) | Voltage sense output | Provides feedback path to internal regulator; connects directly to load reference node for precision voltage regulation. |
| OUTF (Pin 7) | Voltage force output | Delivers regulated 4.096V current to load; shorted to OUTS near load to eliminate trace resistance error. |
Key Features
| Feature | Design Value |
|---|---|
| Force/sense output architecture | Enables Kelvin connection to eliminate up to 50mΩ of trace resistance error in high-accuracy current sources and ADC references. |
| Ultra-low long-term stability | 20ppm/1000hr (SO package) - ensures reference drift remains below 0.002% over 6 months in calibration equipment. |
| Capacitive-load stability | Stable with 0.1µF to 10µF output capacitance - supports both low-ESR ceramic and bulk tantalum bypassing for transient immunity. |
| Low line regulation | ≤30µV/V (4.3V–12.6V) - maintains <±120µV output shift over full supply range, critical for unregulated power rails. |
| Automotive-grade operation | Specified from –40°C to +125°C - qualified for under-hood sensor signal conditioning and EV battery monitoring systems. |
Applications
| High-Resolution Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: 16-bit SAR ADC in portable multimeter or bench DMM requiring <±1 LSB total unadjusted error. IC Role / Device Role / Timing Role: Primary voltage reference for ADC VREF input, providing stable 4.096V scaling with minimal drift and noise. Use Value: Enables true 16-bit ENOB by contributing <0.002% gain error and <2.4µVP-P low-frequency noise - below quantization step of 4.096V/65536 = 62.5µV. |
Use Scenario: Precision current source for RTD or strain gauge excitation in engine control unit (ECU) ambient temperature monitoring. IC Role / Device Role / Timing Role: Reference for op-amp-based constant-current generator driving 4-wire PT100 sensor. Use Value: Force/sense outputs cancel lead resistance errors; 3ppm/°C tempco ensures <±0.3°C measurement uncertainty over –40°C to +125°C ambient range. |
| ATE Equipment Reference Standard | Industrial Process Controller Calibration |
Use Scenario: Rack-mounted automated test equipment calibrating 24-bit delta-sigma ADCs in production test fixtures. IC Role / Device Role / Timing Role: Master reference for DAC-based stimulus generation and ADC reference in self-test loopback paths. Use Value: 20ppm/1000hr long-term stability minimizes recalibration frequency; low 120nV/√Hz noise prevents false fails during dynamic testing. |
Use Scenario: Field-deployable handheld calibrator verifying 4–20mA transmitter outputs in refinery process loops. IC Role / Device Role / Timing Role: Stable 4.096V reference for precision DAC generating known current setpoints. Use Value: Wide 4.3–12.6V supply range accommodates aging alkaline batteries; –40°C to +125°C rating ensures reliability in outdoor enclosures. |
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 max tempco, but higher 3.75µVP-P (0.1Hz–10Hz) noise and no force/sense outputs. | Lacks Kelvin sensing - unsuitable for 4-wire current sources or long-trace ADC references where trace resistance matters. | Select when lowest cost and standard SOIC-8 footprint are priorities, and trace IR drop is negligible. |
| REF5040AID | 4.096V output, ±0.02% initial accuracy, 3ppm/°C max tempco, 2.2µVP-P noise, but requires external 10µF NR capacitor for best noise and has no GNDS pin. | No ground-sense capability limits remote sensing accuracy; higher 550µA quiescent current impacts battery life. | Select when ultra-low noise is secondary to ultra-low tempco stability, and board space allows larger bypass caps. |
Compared with ADR4540BRZ and REF5040AID, MAX6126A41+T uniquely integrates force/sense outputs and GNDS for true 4-wire referencing, achieves lower flicker noise (2.4µVP-P vs. ≥2.2µVP-P), and consumes less supply current (380µA vs. ≥550µA), making it optimal for portable, high-accuracy metrology systems.
Availability
MAX6126A41+T is available at Aetrix Electronics and suitable for high-resolution A/D converters, automotive sensor signal conditioning, and industrial process controller calibration requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6126A41+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 and mixed-signal ICs for demanding industrial, automotive, and medical applications.
The MAX6126 family targets ultra-high-accuracy voltage references for metrology-grade instrumentation, where low noise, tight tempco, and force/sense architecture are essential for 16-bit+ system performance.
FAQ
What is the maximum dropout voltage specification for MAX6126A41+T at 10mA load current?
The MAX6126A41+T has a maximum dropout voltage of 0.4V at 10mA load current, defined as the minimum (VIN – VOUT) required to maintain output regulation within 0.1% of 4.096V. At 5mA, the max dropout is 0.2V. This allows reliable operation from a 4.3V supply rail while delivering full 4.096V output.
Can MAX6126A41+T be used with a 0.1µF output capacitor, and what is the minimum recommended value?
Yes, MAX6126A41+T is stable with a 0.1µF output capacitor - the minimum recommended value per datasheet. It supports capacitive loads from 0.1µF to 10µF. For best transient response with rapidly changing loads, pairing a 0.1µF ceramic cap close to OUTF with a 10µF bulk capacitor is advised.
How does the NR (noise reduction) pin function on MAX6126A41+T, and what capacitor value is recommended?
The NR pin on MAX6126A41+T accepts an external capacitor to reduce wideband noise. A 0.1µF capacitor lowers 1kHz noise from 120nV/√Hz to 80nV/√Hz and 0.1Hz–10Hz noise to ≤0.9µVP-P. Larger values (e.g., 100µF) further reduce flicker noise to 0.6µVP-P, but increase turn-on settling time to 20ms.
What is the purpose of the GNDS pin on MAX6126A41+T, and how should it be connected?
The GNDS pin on MAX6126A41+T provides a dedicated ground sense connection for Kelvin-style remote sensing. It must be connected to the exact same point as the load's ground return - not to the main GND pin - to cancel voltage drop in the ground trace. This ensures the internal regulator senses true load ground potential.
Is MAX6126A41+T specified for operation across the full automotive temperature range?
Yes, MAX6126A41+T is fully specified from –40°C to +125°C, including all key parameters: ±0.02% initial accuracy, ≤5ppm/°C tempco, 380µA to 725µA supply current, and 2.4µVP-P flicker noise. It meets AEC-Q100 stress test requirements for automotive applications.
MAX6126A41+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:
- ±0.06%
- Temperature Coefficient:
- 5ppm/°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
MAX6126A41+T FAQ
1.How can I place an order for MAX6126A41+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6126A41+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 MAX6126A41+T reliable?
The price and inventory of MAX6126A41+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6126A41+T is usually 5 days.
3.What payment methods are accepted for MAX6126A41+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6126A41+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6126A41+T?
MAX6126A41+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6126A41+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 MAX6126A41+T?
For technical support, including MAX6126A41+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6126A41+T requirements.
6.How does Aetrix verify that MAX6126A41+T is sourced from the original manufacturer or authorized distributors?
All MAX6126A41+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 MAX6126A41+T meets industry standards.
7.What is the process for return or replacement of MAX6126A41+T?
All MAX6126A41+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6126A41+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 MAX6126A41+T part is unused and in its original packaging.
Return procedure for MAX6126A41+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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