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Analog Devices Inc./Maxim Integrated MAX6126BASA50+
- Part No.:
- MAX6126BASA50+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6126BASA50+.pdf
- Description:
- IC VREF SERIES 0.06% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:118
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Product details
Overview
MAX6126BASA50+ from Maxim Integrated is a B-grade, 5.000V ultra-precision series voltage reference with ±0.06% initial accuracy, 10ppm/°C max temperature coefficient over -40°C to +125°C, and 2.85µVP-P (0.1Hz–10Hz) flicker noise - designed for high-resolution ADC/DAC biasing in automotive and industrial instrumentation.
For engineers reviewing the MAX6126BASA50+ datasheet, MAX6126BASA50+ pinout, MAX6126BASA50+ application, or MAX6126BASA50+ equivalent, key selection criteria include its force/sense output architecture, 0.1µF–10µF capacitive-load stability, 5.2V–12.6V supply range, and 200mV dropout at 10mA - critical for low-headroom precision systems requiring long-term drift <20ppm/1000hr.
Technical Context
The MAX6126BASA50+ implements a curvature-corrected bandgap core with laser-trimmed thin-film resistors and proprietary low-noise architecture. Its dual-output (OUTF/OUTS) enables Kelvin sensing to cancel trace resistance errors in remote load applications.
It operates as a three-terminal series reference with internal current regulation, delivering stable 5.000V output independent of supply voltage variation (2μA/V max IIN drift), while supporting sink/source currents up to ±10mA with <0.025Ω effective load regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±0.06% at +25°C - enables direct interface with 5V-rail SAR ADCs without scaling. |
| Tempco (–40°C to +125°C) | 10ppm/°C max - ensures ≤±0.5mV total drift across full automotive temperature range. |
| Flicker Noise (0.1Hz–10Hz) | 2.85µVP-P - minimizes quantization uncertainty in 24-bit delta-sigma converters. |
| Wideband Noise (1kHz) | 145nV/√Hz (no NR cap); 95nV/√Hz (with 0.1µF NR cap) - supports low-noise signal chain design. |
| Dropout Voltage | 200mV max at 10mA - allows operation from 5.2V supply in 5V systems with margin. |
| Supply Current | 380µA typical, 725µA max (–40°C to +125°C) - enables low-power precision in battery-backed modules. |
| Load Regulation | ≤50µV/mA sourcing - maintains <±100µV error under 10mA dynamic load steps. |
Pinout & Package
MAX6126BASA50+ is housed in an 8-pin SO package (SOIC narrow, 150mil width), RoHS-compliant and lead-free (+ suffix). 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 wideband noise from 145nV/√Hz to 95nV/√Hz; floating if unused. |
| IN (Pin 2) | Positive supply input | Operates from 5.2V to 12.6V; supplies internal regulator and reference core. |
| GND (Pin 3) | Power ground reference | Common return for internal circuitry; separate from GNDS to enable Kelvin sensing. |
| GNDS (Pin 4) | Ground sense terminal | Connects to load ground point to cancel ground-path IR drop in precision current sources. |
| OUTS (Pin 6) | Voltage sense output | Provides feedback path to internal error amplifier; connects directly to load reference node. |
| OUTF (Pin 7) | Voltage force output | Delivers regulated 5.000V current to load; shorted to OUTS near load for 4-wire accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Force/Sense Output Architecture | Enables true 4-wire remote sensing to eliminate voltage drop errors in PCB traces or cables. |
| 0.1µF–10µF Capacitive-Load Stability | Eliminates need for external compensation; supports ceramic or tantalum output caps without oscillation. |
| Low 200mV Dropout at 10mA | Permits use in 5.2V-supplied systems with tight headroom, unlike shunt references requiring ≥1V overhead. |
| 20ppm/1000hr Long-Term Stability (SO) | Ensures calibration integrity over 1 year in field-deployed test equipment without recalibration. |
| Thermal Hysteresis: 15ppm (SO) | Minimizes repeatability error after thermal cycling - critical for metrology-grade instruments. |
Applications
| High-Resolution Data Acquisition | Precision Industrial Current Source |
|---|---|
|
Use Scenario: 24-bit delta-sigma ADC in portable digital multimeter with auto-ranging. IC Role / Device Role / Timing Role: Primary voltage reference for ADC VREF input and DAC output scaling. Use Value: 2.85µVP-P flicker noise and 10ppm/°C tempco ensure <±1 LSB error across –20°C to +70°C operating range. |
Use Scenario: 4–20mA loop transmitter with HART modulation in process control valve. IC Role / Device Role / Timing Role: Force/sense reference for op-amp-based current mirror generating precise loop current. Use Value: GNDS/OUTS separation cancels up to 100mΩ trace resistance, maintaining ±0.1% current accuracy over cable length. |
| Automotive Battery Monitoring Unit | ATE Reference Standard |
|
Use Scenario: High-side cell-voltage measurement in 12S Li-ion battery pack with integrated MCU. IC Role / Device Role / Timing Role: Stable 5.000V reference for 16-bit SAR ADC sampling cell voltages. Use Value: –40°C to +125°C operation and 725µA max supply current enable direct placement on battery management PCB without derating. |
Use Scenario: Calibration reference in automated test equipment verifying 18-bit DAC linearity. IC Role / Device Role / Timing Role: Primary traceable reference source for DUT stimulus and measurement comparison. Use Value: 20ppm/1000hr long-term stability and 15ppm thermal hysteresis meet ISO/IEC 17025 traceability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4550BRZ | 5.000V, ±0.02% A-grade, 3ppm/°C max, 1.75µVP-P, SOIC-8, but no force/sense outputs. | Lacks Kelvin sensing; requires external layout compensation for trace IR drop. | Choose when highest initial accuracy and lowest tempco are prioritized over remote sensing capability. |
| REF5050AIDR | 5.000V, ±0.05% A-grade, 3ppm/°C max, 2.2µVP-P, SOIC-8, includes force/sense but higher 1.2mA quiescent current. | Higher supply current limits use in power-constrained portable instruments. | Choose when lower noise and tighter tempco justify 3× higher IQ in mains-powered ATE systems. |
Compared with ADR4550BRZ and REF5050AIDR, MAX6126BASA50+ uniquely balances B-grade cost efficiency (±0.06%), automotive temperature support, force/sense capability, and ultra-low 380µA quiescent current - making it optimal for embedded industrial sensors and battery-aware test gear where remote sensing and low power coexist.
Availability
MAX6126BASA50+ is available at Aetrix Electronics and suitable for high-resolution data acquisition, precision industrial current sources, and automotive battery monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6126BASA50+ 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 delivers ultra-low-noise, high-accuracy series voltage references optimized for metrology-grade instrumentation, automotive sensing, and industrial control systems demanding long-term stability and Kelvin sensing.
FAQ
What is the maximum supply voltage for MAX6126BASA50+?
The MAX6126BASA50+ supports a supply voltage range of 5.2V to 12.6V. This upper limit is defined by its absolute maximum rating of +13V on the IN pin and guaranteed operation up to 12.6V per the line regulation specification. Exceeding 12.6V may degrade long-term reliability or violate safe operating area limits.
Does MAX6126BASA50+ require an external resistor like shunt references?
No, MAX6126BASA50+ is a three-terminal series voltage reference and does not require an external current-setting resistor. Its supply current is internally regulated at ~380µA and remains virtually independent of input voltage - eliminating resistor tolerance errors and power waste inherent in two-terminal shunt references.
How does the force/sense architecture of MAX6126BASA50+ improve accuracy?
The MAX6126BASA50+ uses separate OUTF (force) and OUTS (sense) pins to implement true Kelvin connection. By routing OUTF to the load while feeding OUTS back to the reference's error amplifier from the load's exact voltage node, it cancels voltage drops across PCB traces or interconnects - enabling sub-0.01% accuracy even with 100mΩ path resistance.
Can MAX6126BASA50+ drive a 10µF output capacitor?
Yes, MAX6126BASA50+ is stable with output capacitance from 0.1µF to 10µF, including ceramic, tantalum, and aluminum electrolytic types. A 10µF capacitor improves transient response during rapid load changes, and combining it with a 0.1µF capacitor further reduces high-frequency noise and ringing.
What is the long-term stability specification for MAX6126BASA50+?
MAX6126BASA50+ exhibits 20ppm/1000hr long-term stability when packaged in the SOIC variant. This value is measured at +25°C over 1000 hours of continuous operation and reflects parametric drift due to dielectric relaxation and stress migration - critical for calibration-holding applications like benchtop DVMs and ATE standards.
MAX6126BASA50+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- 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:
- 10ppm/°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-SOIC
MAX6126BASA50+ FAQ
1.How can I place an order for MAX6126BASA50+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6126BASA50+ 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 MAX6126BASA50+ reliable?
The price and inventory of MAX6126BASA50+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6126BASA50+ is usually 5 days.
3.What payment methods are accepted for MAX6126BASA50+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6126BASA50+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6126BASA50+?
MAX6126BASA50+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6126BASA50+ 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 MAX6126BASA50+?
For technical support, including MAX6126BASA50+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6126BASA50+ requirements.
6.How does Aetrix verify that MAX6126BASA50+ is sourced from the original manufacturer or authorized distributors?
All MAX6126BASA50+ 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 MAX6126BASA50+ meets industry standards.
7.What is the process for return or replacement of MAX6126BASA50+?
All MAX6126BASA50+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6126BASA50+, 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 MAX6126BASA50+ part is unused and in its original packaging.
Return procedure for MAX6126BASA50+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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