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Analog Devices Inc./Maxim Integrated MAX6126B50+T
- Part No.:
- MAX6126B50+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6126B50+T.pdf
- Description:
- IC VREF SERIES 0.1% 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,190
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Product details
Overview
MAX6126B50+T from Maxim Integrated is a high-precision, ultra-low-noise series voltage reference delivering 5.000V output with ±0.06% initial accuracy, 3ppm/°C (max) temperature coefficient over –40°C to +125°C, and 2.85µVP-P (0.1Hz–10Hz) flicker noise. It operates from 5.2V to 12.6V supply, supports 10mA source/sink current, and enables precision ADC/DAC biasing in automotive-grade instrumentation.
For engineers reviewing the MAX6126B50+T datasheet, MAX6126B50+T pinout, MAX6126B50+T application, or MAX6126B50+T equivalent, key selection criteria include its force/sense output architecture for remote sensing, 0.1µF–10µF capacitive-load stability, low 200mV dropout at 5mA, and guaranteed long-term stability of 20ppm/1000hr in SO package.
Technical Context
The MAX6126B50+T implements a curvature-corrected bandgap core with laser-trimmed thin-film resistors to achieve 3ppm/°C max tempco across –40°C to +125°C. Its proprietary low-noise architecture separates flicker and wideband noise paths, enabling 2.85µVP-P (0.1–10Hz) and 145nV/√Hz (1kHz, no NR cap) without elevated quiescent current.
It features dual-output Kelvin configuration: OUTF supplies load current while OUTS provides feedback sensing, and GNDS returns ground-sense path-enabling cancellation of trace IR drops in high-accuracy current sources and metrology systems. The NR pin accepts 0.1µF capacitor to reduce wideband noise to 95nV/√Hz and 0.6µVP-P (0.1–10Hz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±0.06% at +25°C - ensures direct compatibility with 5V-rail SAR ADCs and DACs without scaling. |
| Tempco (–40°C to +125°C) | ≤3ppm/°C (A grade), ≤12ppm/°C (B grade) - guarantees <±0.015% output drift over full automotive range. |
| Flicker Noise (0.1–10Hz) | 2.85µVP-P - enables 20-bit+ resolution in precision digital voltmeters and ATE systems. |
| Dropout Voltage | 0.05V (min) at 5mA - allows operation with only 5.2V input, critical for low-headroom industrial power rails. |
| Load Regulation | ≤50µV/mA sourcing - maintains <±0.001% output error under 10mA dynamic load steps in current-source designs. |
| Long-Term Stability | 20ppm/1000hr (SO package) - supports calibration intervals >1 year in field-deployed test equipment. |
| Supply Current | 380µA typical, ≤725µA over temperature - enables low-power battery-backed reference subsystems. |
Pinout & Package
MAX6126B50+T is housed in an 8-pin SO package (SOIC-8), RoHS-compliant, 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, Pin 7 is OUTF.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| NR (Pin 1) | Noise reduction input | Accepts 0.1µF capacitor to reduce 1kHz wideband noise from 145nV/√Hz to 95nV/√Hz and flicker noise to 0.6µVP-P. |
| IN (Pin 2) | Positive supply input | Operates from 5.2V to 12.6V; supply current varies <2µA/V - eliminates need for input regulation in multi-rail systems. |
| GND (Pin 3) | Power ground return | Reference for internal circuitry; separate from GNDS to isolate sense-path noise coupling. |
| GNDS (Pin 4) | Ground sense terminal | Connects to load ground point to cancel ground-return IR drop - essential for sub-0.01% current-source accuracy. |
| OUTS (Pin 6) | Voltage sense output | Provides feedback to internal regulator; connects directly to load's reference node for remote sensing. |
| OUTF (Pin 7) | Force output terminal | Delivers regulated 5V current to load; shorted to OUTS near load to eliminate trace resistance error. |
Key Features
| Feature | Design Value |
|---|---|
| Force-and-sense output architecture | Enables Kelvin connection to eliminate voltage drop errors in PCB traces and connectors - critical for 0.01% precision current sources. |
| 0.1µF–10µF capacitive-load stability | Eliminates need for external compensation networks; supports both ceramic (0.1µF) and bulk (10µF) output filtering in mixed-signal systems. |
| Ultra-low 2.85µVP-P flicker noise | Permits DC-coupled, high-resolution measurements in digital multimeters and sensor signal chains without post-processing filtering. |
| 20ppm/1000hr long-term stability (SO) | Reduces recalibration frequency in production test fixtures and portable calibration standards. |
| Automotive temperature range (–40°C to +125°C) | Validated for under-hood and industrial control applications where ambient thermal cycling exceeds commercial limits. |
Applications
| High-Resolution Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
|
Use Scenario: 24-bit delta-sigma ADC front-end in portable power analyzers requiring stable 5V reference. IC Role / Device Role / Timing Role: Primary voltage reference supplying VREF+ to ADC, with OUTF/OUTS/GNDS configured for 4-wire remote sensing. Use Value: 3ppm/°C tempco and 2.85µVP-P noise ensure <±1 LSB error over temperature and time without software correction. |
Use Scenario: Precision current source for RTD or strain-gauge excitation in engine control units. IC Role / Device Role / Timing Role: Force-sense reference driving MOSFET gate; GNDS tied to sensor ground to reject harness-induced common-mode error. Use Value: 0.06% initial accuracy and 20ppm/1000hr stability maintain <±0.1°C measurement uncertainty over 5-year vehicle life. |
| Digital Voltmeter Reference Standard | Industrial Process Controller Calibration |
|
Use Scenario: Benchtop DVM requiring traceable 5.000V reference with <10ppm total uncertainty. IC Role / Device Role / Timing Role: Primary reference in auto-ranging input stage; NR capacitor used to suppress switching noise from SMPS-derived supply. Use Value: 145nV/√Hz wideband noise and 5.2V min input allow direct use with 5.5V LDO - no extra headroom needed. |
Use Scenario: Field-replaceable reference module in PLC analog I/O cards for 4–20mA loop calibration. IC Role / Device Role / Timing Role: Stable 5V source for DAC output buffer and current-loop driver; SO package qualified for reflow soldering in high-volume manufacturing. Use Value: 10mA sink/source capability drives op-amp inputs and loop drivers simultaneously without external buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4550BRZ | 5.0V output, ±0.02% initial accuracy, 3ppm/°C max tempco, but higher 3.75µVP-P noise and no force/sense outputs. | Lacks Kelvin sensing - unsuitable for high-accuracy current sources with long trace lengths. | Select when ultimate initial accuracy is prioritized over noise and remote sensing capability. |
| REF5050IDR | 5.0V output, ±0.05% initial accuracy, 3ppm/°C max tempco, 2.9µVP-P noise, but requires ≥6.5V supply and has no NR pin. | Higher minimum supply limits use in 5.5V systems; no noise-reduction capacitor option degrades wideband PSRR. | Select when board space is constrained (SO-8 vs. REF5050's SO-8) and supply rail ≥6.5V is available. |
Compared with ADR4550BRZ and REF5050IDR, MAX6126B50+T uniquely combines force/sense outputs, 5.2V minimum supply, and NR-capacitor noise reduction - making it optimal for automotive and industrial current-source and metrology applications demanding sub-0.01% system-level accuracy.
Availability
MAX6126B50+T is available at Aetrix Electronics and suitable for high-accuracy data acquisition, automotive sensor conditioning, and industrial process controller calibration requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6126B50+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, with emphasis on low-noise, high-stability performance.
The MAX6126 family targets ultra-high-precision voltage references for metrology-grade instrumentation, where flicker noise, thermal hysteresis, and long-term drift directly impact measurement validity.
FAQ
What is the maximum supply voltage for MAX6126B50+T?
The absolute maximum supply voltage for MAX6126B50+T is +13V, but the guaranteed operating range is 5.2V to 12.6V. Operation above 12.6V risks exceeding safe power dissipation limits and may degrade long-term stability. For reliable 5.000V output regulation, VIN must remain ≥ (VOUT + dropout), i.e., ≥5.2V at 5mA load.
Can MAX6126B50+T drive a 10µF output capacitor?
Yes, MAX6126B50+T is explicitly characterized for stable operation with 0.1µF to 10µF output capacitance. A 10µF ceramic or tantalum capacitor improves transient response during rapid load changes, such as in DAC buffer circuits, and reduces output ripple without requiring external compensation.
How does the NR pin reduce noise in MAX6126B50+T?
The NR pin on MAX6126B50+T accepts a 0.1µF capacitor to shunt high-frequency noise from the internal reference core. This reduces wideband noise from 145nV/√Hz to 95nV/√Hz at 1kHz and lowers 0.1Hz–10Hz flicker noise from 2.85µVP-P to 0.6µVP-P, significantly improving effective resolution in DC-coupled measurement systems.
Is MAX6126B50+T suitable for remote sensing applications?
Yes - MAX6126B50+T features dedicated OUTF (force), OUTS (sense), and GNDS (ground sense) terminals to implement true 4-wire Kelvin connections. This architecture cancels voltage drops across PCB traces and connectors, enabling <0.01% accuracy in precision current sources and high-side sensing topologies.
What is the long-term stability specification for MAX6126B50+T in SO package?
MAX6126B50+T in SO package exhibits 20ppm/1000hr long-term stability at +25°C, measured per JEDEC JESD22-A117. This value reflects typical drift after 1000 hours of continuous operation and supports calibration intervals exceeding one year in production test equipment and field-deployed instruments.
MAX6126B50+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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 12ppm/°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
MAX6126B50+T FAQ
1.How can I place an order for MAX6126B50+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6126B50+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 MAX6126B50+T reliable?
The price and inventory of MAX6126B50+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6126B50+T is usually 5 days.
3.What payment methods are accepted for MAX6126B50+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6126B50+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6126B50+T?
MAX6126B50+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6126B50+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 MAX6126B50+T?
For technical support, including MAX6126B50+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6126B50+T requirements.
6.How does Aetrix verify that MAX6126B50+T is sourced from the original manufacturer or authorized distributors?
All MAX6126B50+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 MAX6126B50+T meets industry standards.
7.What is the process for return or replacement of MAX6126B50+T?
All MAX6126B50+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6126B50+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 MAX6126B50+T part is unused and in its original packaging.
Return procedure for MAX6126B50+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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