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Analog Devices Inc./Maxim Integrated MAX6126A41+
- Part No.:
- MAX6126A41+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6126A41+.pdf
- Description:
- IC VREF SERIES 0.06% 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:455
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Product details
Overview
MAX6126A41+ 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 separate force (OUTF) and sense (OUTS) outputs - ideal for high-resolution 12-bit/16-bit ADCs requiring tight reference stability.
For engineers reviewing the MAX6126A41+ datasheet, MAX6126A41+ pinout, MAX6126A41+ application, or MAX6126A41+ equivalent, this page delivers verified specifications, validated pin functions, automotive-grade thermal performance data, and real-world design considerations for precision analog signal chains in test equipment and industrial control systems.
Technical Context
The MAX6126A41+ employs curvature-corrected bandgap architecture with laser-trimmed thin-film resistors to achieve 3ppm/°C max tempco and ±0.02% max initial accuracy. Its dual-output Kelvin configuration (OUTF/OUTS + GNDS) actively compensates for PCB trace resistance, enabling sub-10ppm system-level accuracy in remote-sensing applications.
It integrates low-noise design with optional NR-pin capacitor support: adding 0.1µF reduces wideband noise from 120nV/√Hz to 80nV/√Hz and 0.1Hz–10Hz noise from 2.4µVP-P to 0.9µVP-P. Dropout voltage remains ≤200mV at 10mA load, and quiescent current stays stable at 380µA (typ) across its 4.3V–12.6V input range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.02% (max) at +25°C - matches common 12-bit DAC/ADC full-scale reference points with minimal calibration overhead. |
| Initial Accuracy | ±0.02% (max) - eliminates need for post-production trimming in high-volume precision instrumentation. |
| Tempco | 3ppm/°C (max) over -40°C to +125°C - ensures <±24ppm drift across full automotive temperature range. |
| Low-Frequency Noise | 2.4µVP-P (0.1Hz–10Hz), reduced to 0.9µVP-P with 0.1µF NR cap - preserves ENOB in slow-sampling precision digitizers. |
| Wideband Noise | 120nV/√Hz (1kHz, no NR cap), 80nV/√Hz (with 0.1µF NR cap) - critical for low-noise amplifier biasing and RF subsystem references. |
| Load Regulation | ≤40µV/mA (sourcing), ≤5µV/mA (sinking) - maintains <±50µV error under 10mA dynamic load steps. |
| Dropout Voltage | 200mV (max) at 10mA - allows operation from 4.3V supply while retaining regulation margin in battery-powered systems. |
Pinout & Package
MAX6126A41+ is housed in an 8-pin SO package (small-outline, surface-mount) with exposed pad for thermal enhancement. Pin functions are validated per Maxim's official pin description and schematic guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - NR | Noise Reduction Input | Accepts 0.1µF capacitor to reduce wideband noise by 33% and flicker noise by >60%; left open if unused. |
| 2 - IN | Positive Supply Input | Operates from 4.3V to 12.6V; supplies internal regulator; requires local 0.1µF bypass to GND. |
| 3 - GND | Power Ground Reference | Main ground return for internal circuitry; must be connected to low-impedance system ground plane. |
| 4 - GNDS | Ground Sense Terminal | Connects to load-side ground point to cancel ground path voltage drop in Kelvin sensing configurations. |
| 5, 8 - I.C. | Internally Connected | No external connection permitted; internally tied to GND or internal nodes - floating or loading causes malfunction. |
| 6 - OUTS | Voltage Sense Output | Provides feedback to internal error amplifier; connects directly to load's reference input node for remote sensing. |
| 7 - OUTF | Voltage Force Output | Delivers regulated 4.096V current to load; shorted to OUTS near load to enable 4-wire sensing accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Force/Sense Outputs (OUTF/OUTS + GNDS) | Enables true 4-wire remote sensing to eliminate errors from PCB trace resistance up to 0.1Ω. |
| Ultra-Low Flicker Noise | 2.4µVP-P (0.1Hz–10Hz) - preserves DC stability in digital voltmeters and strain-gauge bridges. |
| Automotive Temperature Range | -40°C to +125°C operation with guaranteed 3ppm/°C tempco - qualified for under-hood and industrial control environments. |
| Capacitive Load Stability | Stable with 0.1µF to 10µF output capacitance - supports mixed-ceramic/tantalum filtering without oscillation risk. |
| Low Dropout & High PSRR | 200mV dropout at 10mA; >60dB PSRR at 1kHz - rejects ripple from noisy switch-mode supplies in compact designs. |
Applications
| High-Resolution Data Acquisition | Precision Current Sources |
|---|---|
|
Use Scenario: 16-bit SAR ADC in automated test equipment sampling sensor signals at 100kSPS. IC Role / Device Role / Timing Role: Primary voltage reference establishing absolute scale for analog-to-digital conversion. Use Value: ±0.02% initial accuracy and 3ppm/°C tempco ensure <±1 LSB error over temperature without recalibration. |
Use Scenario: Programmable 4–20mA transmitter driving long industrial field cables. IC Role / Device Role / Timing Role: Stable 4.096V reference for op-amp-based current-setting network. Use Value: Force/sense outputs compensate for 1–2Ω loop wiring resistance, maintaining <0.1% current accuracy. |
| Digital Voltmeters | Industrial Process Control |
|
Use Scenario: Benchtop DVM measuring mV-level thermocouple outputs with auto-ranging. IC Role / Device Role / Timing Role: Low-noise reference for integrator and comparator stages in dual-slope architecture. Use Value: 2.4µVP-P flicker noise prevents baseline drift during 100ms integration cycles. |
Use Scenario: PLC analog input module conditioning 4–20mA signals from pressure transmitters. IC Role / Device Role / Timing Role: Precision reference for ADC front-end and isolated current-loop receiver. Use Value: Long-term stability of 20ppm/1000hr minimizes annual calibration drift in unattended installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4540BTRZ-R7 | 4.096V output, ±0.02% initial accuracy, 3ppm/°C tempco, but higher 3.5µVP-P flicker noise and no force/sense outputs. | Lacks remote sensing capability; requires external Kelvin routing for equivalent accuracy. | Preferred when board space is constrained and remote sensing is not required. |
| REF5040IDR | 4.096V output, ±0.05% initial accuracy, 3ppm/°C tempco, 3.8µVP-P noise, and no NR pin for wideband noise reduction. | Higher initial error increases calibration burden; no noise-reduction capacitor option limits low-noise use cases. | Suitable for cost-sensitive industrial designs where 0.05% accuracy suffices and noise is less critical. |
Compared with ADR4540BTRZ-R7 and REF5040IDR, MAX6126A41+ uniquely combines force/sense architecture, lowest flicker noise in its class, and integrated NR-capability - making it optimal for metrology-grade systems demanding both accuracy and noise immunity without layout compromises.
Availability
MAX6126A41+ is available at Aetrix Electronics and suitable for high-resolution data acquisition, precision current sources, digital voltmeters, and industrial process control applications requiring stable component supply across automotive and extended temperature ranges.
Supply support for MAX6126A41+ 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.
The MAX6126 family targets ultra-precision voltage reference needs in test & measurement, industrial automation, and automotive subsystems - emphasizing low noise, tight tempco, and robust remote-sensing capability.
FAQ
What is the maximum load current supported by the MAX6126A41+?
The MAX6126A41+ supports ±10mA load current - sourcing up to +10mA from OUTF and sinking up to -10mA into OUTF. Load regulation remains ≤40µV/mA (sourcing) and ≤5µV/mA (sinking), ensuring stable 4.096V output under dynamic load conditions. Exceeding ±10mA may degrade accuracy or trigger thermal shutdown.
Does the MAX6126A41+ require an external resistor like shunt references?
No, the MAX6126A41+ is a series-mode voltage reference and does not require an external current-setting resistor. Unlike shunt references, its supply current is virtually independent of input voltage (380µA typ, ±2µA/V variation), simplifying design and improving efficiency in low-power systems.
How does the NR (Noise Reduction) pin function on the MAX6126A41+?
The NR pin on the MAX6126A41+ accepts a 0.1µF capacitor to reduce wideband noise from 120nV/√Hz to 80nV/√Hz and 0.1Hz–10Hz flicker noise from 2.4µVP-P to 0.9µVP-P. This capacitor forms a low-pass filter within the internal noise-shaping loop - leaving NR unconnected disables this feature without affecting basic operation.
Can the MAX6126A41+ be used with output capacitors outside the 0.1µF–10µF range?
No - the MAX6126A41+ is only guaranteed stable with output capacitance between 0.1µF and 10µF. Capacitors below 0.1µF risk oscillation due to insufficient phase margin; those above 10µF may cause excessive turn-on settling time (>20ms) or instability under transient loads. Ceramic X7R types are recommended for best ESR performance.
What is the purpose of the separate OUTF, OUTS, and GNDS pins on the MAX6126A41+?
These pins implement a 4-wire Kelvin sensing architecture: OUTF delivers current to the load, OUTS senses voltage at the load node, and GNDS returns sense current from the load ground point. This cancels voltage drops across PCB traces and connectors - enabling sub-10ppm system accuracy even with 0.1Ω path resistance, which is essential for metrology-grade applications.
MAX6126A41+ 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):
- 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+ FAQ
1.How can I place an order for MAX6126A41+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6126A41+ 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+ reliable?
The price and inventory of MAX6126A41+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6126A41+ is usually 5 days.
3.What payment methods are accepted for MAX6126A41+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6126A41+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6126A41+?
MAX6126A41+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6126A41+ 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+?
For technical support, including MAX6126A41+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6126A41+ requirements.
6.How does Aetrix verify that MAX6126A41+ is sourced from the original manufacturer or authorized distributors?
All MAX6126A41+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX6126A41+?
All MAX6126A41+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6126A41+, 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+ part is unused and in its original packaging.
Return procedure for MAX6126A41+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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