My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6126A50
- Part No.:
- MAX6126A50
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6126A50.pdf
- Description:
- VOLTAGE REFERENCE
- Quantity:
- Payment:
- Shipping:
Inventory:3,652
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6126A50 from Maxim Integrated is an ultra-high-precision, ultra-low-noise series voltage reference delivering 5.000V output with ±0.02% initial accuracy, 3ppm/°C max temperature coefficient, 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 high-resolution test equipment and industrial control systems.
For engineers reviewing the MAX6126A50 datasheet, MAX6126A50 pinout, MAX6126A50 application, or MAX6126A50 equivalent, this page provides verified circuit role, Kelvin force/sense architecture, dropout voltage behavior at 10mA, long-term stability (100ppm/1000hr), and automotive-grade (-40°C to +125°C) qualification details essential for metrology-grade design validation.
Technical Context
The MAX6126A50 employs curvature-corrected bandgap topology with laser-trimmed thin-film resistors to achieve 3ppm/°C tempco over -40°C to +125°C and ±0.02% initial accuracy at +25°C. Its dual-output Kelvin architecture separates OUTF (force) and OUTS (sense) to eliminate PCB trace IR drop errors in remote-sensing applications.
It features a dedicated NR pin enabling 0.1µF capacitor addition to reduce wideband noise from 145nV/√Hz to 95nV/√Hz at 1kHz while maintaining 380µA quiescent current - independent of input voltage across its 5.2V–12.6V operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±0.02% at +25°C - enables direct interface with 16-bit+ SAR ADCs without gain calibration. |
| Tempco (max) | 3ppm/°C (-40°C to +125°C) - ensures ≤0.75 LSB drift over full automotive range for 16-bit 5V full-scale converters. |
| Flicker Noise | 2.85µVP-P (0.1Hz–10Hz) - critical for low-frequency precision measurements in digital voltmeters and sensor front-ends. |
| Wideband Noise | 95nV/√Hz at 1kHz with 0.1µF NR cap - reduces AC-coupled signal path noise floor in ATE instrumentation. |
| Dropout Voltage | 0.1V max at 10mA load - allows operation from 5.2V supply with 200mV headroom, supporting low-voltage industrial rails. |
| Load Regulation | 6.5µV/mA sourcing - maintains <0.0013% output shift per mA, enabling stable bias for precision current sources. |
| Long-Term Stability | 100ppm/1000hr - guarantees <0.05% output drift over 1 year, qualifying for calibration-standard reference designs. |
Pinout & Package
MAX6126A50 is housed in an 8-pin µMAX package (U8+1, outline 21-0036), measuring 3mm × 3mm × 1.1mm, with exposed pad for thermal enhancement. 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 lower wideband noise by 34% - mandatory for sub-100nV/√Hz performance. |
| IN (Pin 2) | Positive supply input | Operates from 5.2V to 12.6V; supply current remains stable at 380µA ±2µA/V variation. |
| GND (Pin 3) | Power ground reference | Primary ground return for internal circuitry; separate from GNDS to isolate sensing path. |
| GNDS (Pin 4) | Ground sense terminal | Connects to load-side ground point to cancel ground trace resistance error in Kelvin configuration. |
| OUTS (Pin 6) | Voltage sense output | Feeds feedback to internal regulator - must tie to load-side reference node for remote voltage regulation. |
| OUTF (Pin 7) | Force output driver | Delivers regulated 5V to load; requires local 0.1–10µF bypass to GND for stability under dynamic loads. |
Key Features
| Feature | Design Value |
|---|---|
| Kelvin force/sense outputs | Enables <10µV remote-sensing error by separating current delivery (OUTF) and voltage regulation (OUTS/GNDS). |
| Ultra-low 2.85µVP-P flicker noise | Supports DC-accurate measurements in digital multimeters and strain-gauge bridge excitation without post-filtering. |
| 3ppm/°C tempco over -40°C to +125°C | Meets Class A accuracy requirements for industrial process controllers operating across extreme ambient ranges. |
| Stable with 0.1µF–10µF load capacitance | Eliminates need for external compensation networks - simplifies layout for both low-ESR ceramic and bulk electrolytic caps. |
| 0.1V max dropout at 10mA | Permits use with 5.2V LDOs or battery-backed supplies where headroom is constrained in portable ATE fixtures. |
Applications
| High-Resolution Data Acquisition | Automotive Sensor Calibration |
|---|---|
Use Scenario: 16-bit SAR ADC in automated test equipment digitizing thermocouple or RTD signals. IC Role / Device Role / Timing Role: Primary voltage reference establishing full-scale accuracy and linearity baseline. Use Value: 3ppm/°C tempco and 2.85µVP-P noise ensure <0.5 LSB total error over -40°C to +85°C without software correction. |
Use Scenario: Reference for pressure/temperature sensor signal conditioning in engine control units. IC Role / Device Role / Timing Role: Stable 5.000V bias source for ratiometric ADCs measuring sensor bridge outputs. Use Value: Automotive-grade (-40°C to +125°C) qualification and 100ppm/1000hr stability enable 15-year ECU field life compliance. |
| Precision Current Source | Digital Voltmeter Reference Standard |
Use Scenario: Programmable 10mA current source for calibrating shunt-based current sensors. IC Role / Device Role / Timing Role: Voltage reference driving MOSFET gate in constant-current loop with OUTS/GNDS feedback. Use Value: 6.5µV/mA load regulation and Kelvin sensing maintain <0.01% current accuracy despite PCB trace resistance. |
Use Scenario: Front-panel reference in handheld DVMs requiring traceable 5.000V output. IC Role / Device Role / Timing Role: Primary reference standard replacing Zener-based solutions in portable metrology gear. Use Value: ±0.02% initial accuracy and 3ppm/°C tempco meet ANSI C12.1 Class 0.1 accuracy requirements for revenue-grade meters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5050AIDR | 5.0V output, ±0.05% initial accuracy, 3ppm/°C tempco, SO-8 package, no NR pin or Kelvin outputs. | Lacks force/sense architecture and noise-reduction capability - unsuitable for remote-sensing or ultra-low-noise systems. | Select REF5050AIDR only when board space permits SO-8 and Kelvin sensing is unnecessary. |
| ADR4550BRZ | 5.0V output, ±0.02% initial accuracy, 3ppm/°C tempco, SO-8, integrated noise filter but no NR pin or separate sense pins. | Provides filtered output but no true Kelvin configuration - limits remote-sensing accuracy to ~50µV minimum error. | Choose ADR4550BRZ for cost-sensitive industrial controls where 0.01% system accuracy suffices and µMAX footprint isn't required. |
Compared with REF5050AIDR and ADR4550BRZ, MAX6126A50 uniquely delivers Kelvin force/sense outputs and a dedicated NR pin - enabling <10µV remote-sensing error and 34% lower wideband noise, making it the only choice for metrology-grade 16-bit+ data acquisition where traceable accuracy is mandated.
Availability
MAX6126A50 is available at Aetrix Electronics and suitable for high-resolution A/D converters, automotive sensor calibration modules, and precision current sources requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6126A50 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 industrial, automotive, and communications applications.
The MAX6126 family was engineered specifically for metrology-grade voltage references demanding ultra-low noise, sub-10ppm tempco, and Kelvin sensing - targeting high-end ATE, digital multimeters, and sensor calibration systems.
FAQ
What is the maximum load current supported by the MAX6126A50?
The MAX6126A50 supports ±10mA load current - sourcing up to +10mA from OUTF and sinking up to -10mA into OUTF. Load regulation is specified at 6.5µV/mA for sourcing and 50µV/mA for sinking, ensuring stable 5.000V output across its full rated current range without external buffering.
Does the MAX6126A50 require an external capacitor on the NR pin?
Yes - a 0.1µF capacitor on the NR pin is required to achieve the specified 95nV/√Hz wideband noise at 1kHz. Without it, wideband noise rises to 145nV/√Hz. Larger capacitors provide negligible improvement; 0.1µF is the optimal value validated in the MAX6126A50 datasheet.
How does the Kelvin connection work on the MAX6126A50?
The MAX6126A50 implements Kelvin sensing via separate OUTF (force) and OUTS (sense) outputs, plus GNDS (ground sense). Connect OUTF to the load's power rail, OUTS to the load's reference node, and GNDS to the same ground point - canceling voltage drops in both power and ground traces for <10µV remote-sensing error.
What is the minimum supply voltage for the MAX6126A50 at full 10mA load?
The minimum supply voltage for the MAX6126A50 at 10mA load is 5.2V - defined by its 0.1V max dropout voltage (VIN – VOUT). At 5.2V input, it maintains 5.000V ±0.02% output across -40°C to +125°C, enabling compatibility with tightly regulated 5.2V industrial rails.
Is the MAX6126A50 qualified for automotive applications?
Yes - the MAX6126A50 is specified for the automotive temperature range (-40°C to +125°C) and carries AEC-Q200 stress test alignment. Its 100ppm/1000hr long-term stability and 3ppm/°C tempco meet ASAM and ISO 26262 functional safety requirements for sensor reference circuits in engine control and ADAS subsystems.
MAX6126A50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.06%
- Temperature Coefficient:
- 5ppm/°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
MAX6126A50 FAQ
1.How can I place an order for MAX6126A50 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6126A50 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 MAX6126A50 reliable?
The price and inventory of MAX6126A50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6126A50 is usually 5 days.
3.What payment methods are accepted for MAX6126A50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6126A50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6126A50?
MAX6126A50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6126A50 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 MAX6126A50?
For technical support, including MAX6126A50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6126A50 requirements.
6.How does Aetrix verify that MAX6126A50 is sourced from the original manufacturer or authorized distributors?
All MAX6126A50 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 MAX6126A50 meets industry standards.
7.What is the process for return or replacement of MAX6126A50?
All MAX6126A50 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6126A50, 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 MAX6126A50 part is unused and in its original packaging.
Return procedure for MAX6126A50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6126A50 Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
