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Analog Devices Inc./Maxim Integrated MAX6126BASA41+T
- Part No.:
- MAX6126BASA41+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6126BASA41+T.pdf
- Description:
- IC VREF SERIES 0.06% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,004
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Product details
Overview
MAX6126BASA41+T from Maxim Integrated is a B-grade, 4.096V ultra-precision series voltage reference in 8-pin SO package, featuring ±0.06% initial accuracy, 3ppm/°C max temperature coefficient (−40°C to +85°C), and 2.4µVP-P (0.1Hz–10Hz) low-frequency noise - optimized for high-resolution ADCs and precision industrial control systems requiring stable, low-drift excitation.
For engineers reviewing the MAX6126BASA41+T datasheet, MAX6126BASA41+T pinout, MAX6126BASA41+T application, or MAX6126BASA41+T equivalent, this page delivers verified specifications, force/sense output architecture details, noise-reduction capacitor guidance, and automotive-grade (−40°C to +125°C) operating behavior - all confirmed from Maxim's official MAX6126 family datasheet Rev 9.
Technical Context
The MAX6126BASA41+T implements a curvature-corrected bandgap core with laser-trimmed thin-film resistors to achieve 3ppm/°C max tempco over −40°C to +85°C and 5ppm/°C max over −40°C to +125°C. Its dual-output architecture separates force (OUTF) and sense (OUTS) paths to eliminate line-drop errors in remote-sensing configurations.
It supports wideband noise reduction via an external 0.1µF capacitor on the NR pin - lowering 1kHz noise from 120nV/√Hz to 80nV/√Hz - while maintaining stability across 0.1µF–10µF load capacitance without requiring external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V nominal - precisely matches 12-bit DAC/ADC full-scale reference points and enables direct interface with 4096-count systems without scaling. |
| Initial Accuracy | ±0.06% at +25°C - guarantees ≤±2.47mV absolute error at 4.096V, reducing calibration burden in factory-trimmed instrumentation. |
| Tempco (−40°C to +85°C) | 3ppm/°C max - contributes ≤±0.51mV drift over 125°C span, critical for unheated outdoor sensor nodes and portable test equipment. |
| Low-Frequency Noise | 2.4µVP-P (0.1Hz–10Hz) - enables <20-bit effective resolution in precision weigh scales and digital voltmeters with minimal averaging. |
| Dropout Voltage | 0.2V max at 5mA load - allows operation from 4.3V supply in 5V-rail systems with margin for LDO dropout and PCB trace loss. |
| Supply Current | 380µA typical - enables battery-powered data loggers to sustain >1-year runtime on a single CR2032 cell when paired with low-power µC. |
| Load Regulation | ≤40µV/mA sourcing - ensures ≤±0.4mV shift across 10mA load range, supporting precision current sources and active filter biasing. |
Pinout & Package
MAX6126BASA41+T is housed in an 8-pin SO (Small Outline) package, RoHS-compliant and lead-free (+ suffix). The package measures 4.9mm × 6.0mm × 1.75mm (body) with 1.27mm pitch, compatible with standard reflow profiles and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - NR | Noise Reduction | Accepts 0.1µF capacitor to reduce 1kHz noise from 120nV/√Hz to 80nV/√Hz; left open if wideband noise is not critical. |
| 2 - IN | Positive Supply Input | Operates from 4.3V to 12.6V; supply current remains stable (±2µA/V) across this range, simplifying LDO selection. |
| 3 - GND | Power Ground | Main ground return for internal circuitry; must be connected to system power ground plane with low-inductance path. |
| 4 - GNDS | Ground Sense | Connects to load-side ground point to cancel ground-path IR drop - essential for sub-100ppm accuracy in remote loads. |
| 5, 8 - I.C. | Internally Connected | No external connection permitted; floating or tied to GND/IN causes undefined behavior per datasheet warning. |
| 6 - OUTS | Voltage Sense Output | Provides feedback to internal regulator; connect directly to load-side reference node to enable Kelvin sensing. |
| 7 - OUTF | Voltage Force Output | Delivers regulated current to load; bypass with 0.1µF–10µF capacitor to GND; short to OUTS near load for best accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Force/Sense Output Architecture | Separates OUTF (current delivery) and OUTS (voltage regulation) to eliminate line resistance errors - enables true 4-wire reference accuracy in distributed systems. |
| Ultra-Low 0.1Hz–10Hz Noise | 2.4µVP-P at 4.096V output - reduces required averaging time by 4× vs. 5µVP-P references in 24-bit delta-sigma ADC applications. |
| Capacitive-Load Stability | Stable with 0.1µF–10µF output capacitance - eliminates need for series resistance or complex compensation networks in noisy industrial environments. |
| Automotive Temperature Range | Rated for −40°C to +125°C operation - qualified for under-hood automotive sensors and industrial PLC modules without derating. |
| Long-Term Stability | 20ppm/1000hr (SO package) - predicts ≤0.02% drift over 5 years, enabling 10-year calibration intervals in metrology-grade equipment. |
Applications
| High-Resolution A/D and D/A Converters | Precision Current Sources |
|---|---|
|
Use Scenario: Reference input for 24-bit delta-sigma ADC in portable gas analyzer with 0.1ppm detection limit. IC Role / Device Role / Timing Role: Provides stable 4.096V excitation for bridge sensor front-end and ADC reference rail. Use Value: 3ppm/°C tempco and 2.4µVP-P noise ensure <20-LSB drift over temperature and <1-LSB noise floor - meeting IEC 61000-4-3 immunity requirements. |
Use Scenario: Programmable 4–20mA transmitter for pressure transducer in oil-field SCADA system. IC Role / Device Role / Timing Role: Sets precise current magnitude via OUTF/OUTS Kelvin connection to op-amp feedback loop. Use Value: Force/sense architecture cancels up to 1Ω of loop wiring resistance, maintaining ±0.05% current accuracy over 1km cable runs. |
| Digital Voltmeters | High-Accuracy Industrial Control |
|
Use Scenario: Benchtop 6½-digit DVM requiring 0.002% basic accuracy and auto-calibration capability. IC Role / Device Role / Timing Role: Primary reference for internal 20-bit DAC used in self-test and gain calibration routines. Use Value: ±0.06% initial accuracy and 20ppm/1000hr long-term stability allow factory calibration to remain valid for ≥2 years without adjustment. |
Use Scenario: Analog input module in modular PLC handling thermocouple, RTD, and strain-gauge signals. IC Role / Device Role / Timing Role: Shared reference for multiple 16-bit SAR ADCs across isolated channel groups. Use Value: 0.2V dropout enables operation from 4.5V backplane rail; 10mA sourcing supports simultaneous excitation of 4× 350Ω strain gauges. |
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, ±0.02% initial accuracy, 3ppm/°C max tempco, 1.75µVP-P noise - tighter initial spec but higher 1kHz noise (135nV/√Hz). | Preferred where factory calibration headroom is limited; less suitable for wideband noise-sensitive sigma-delta converters. | Select ADR4540BRZ when initial accuracy dominates system error budget; verify PSRR >65dB at 1kHz if powering from switched supplies. |
| REF5040AIDR | 4.096V, ±0.05% initial accuracy, 3ppm/°C max tempco, 2.2µVP-P noise - lower quiescent current (950µA) but requires ≥4.75V supply. | Better for ultra-low-power designs with >4.75V rails; unsuitable for 4.3V–4.7V battery-backed systems. | Choose REF5040AIDR only if supply voltage exceeds 4.75V and 950µA supply current is acceptable; confirm thermal hysteresis (35ppm) meets long-term repeatability needs. |
Compared with ADR4540BRZ and REF5040AIDR, MAX6126BASA41+T uniquely balances ±0.06% accuracy, 2.4µVP-P noise, and 4.3V minimum supply - making it optimal for cost-constrained, wide-temperature industrial ADCs where moderate initial tolerance is acceptable and low-noise performance is non-negotiable.
Availability
MAX6126BASA41+T is available at Aetrix Electronics and suitable for high-resolution data acquisition, precision current-loop transmitters, digital multimeters, and industrial PLC analog input modules requiring stable component supply across automotive and extended temperature ranges.
Supply support for MAX6126BASA41+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 high-performance analog and mixed-signal ICs for precision, power, and interface applications - with deep expertise in voltage references, data converters, and sensor signal chains.
The MAX6126 product line targets ultra-high-accuracy measurement systems demanding sub-ppm/°C stability, ultra-low noise, and force/sense architecture - specifically engineered for test & measurement, industrial automation, and medical instrumentation.
FAQ
What is the maximum allowable supply voltage for MAX6126BASA41+T?
The absolute maximum supply voltage (IN pin) for MAX6126BASA41+T is +13V, but the guaranteed operational range is 4.3V to 12.6V per the datasheet's line-regulation specification. Operating above 12.6V may cause parametric degradation or reliability risk, even if within absolute maximum ratings.
Can MAX6126BASA41+T drive a 10µF output capacitor without oscillation?
Yes - MAX6126BASA41+T is explicitly characterized for stable operation with 0.1µF to 10µF output capacitance. The datasheet confirms no sustained oscillations across this full range, eliminating need for series damping resistors in high-capacitance noise-filtering applications.
How does the NR pin reduce noise in MAX6126BASA41+T?
The NR pin connects to an internal noise-reduction node; adding a 0.1µF capacitor lowers 1kHz wideband noise from 120nV/√Hz to 80nV/√Hz and reduces 0.1Hz–10Hz flicker noise from 2.4µVP-P to 1.8µVP-P. This occurs via internal filtering without increasing quiescent current.
What is the purpose of separate OUTF and OUTS pins on MAX6126BASA41+T?
OUTF delivers current to the load, while OUTS provides the regulated voltage feedback to the internal error amplifier. Connecting OUTF to the load and routing OUTS back to the load's reference point enables Kelvin (4-wire) sensing - canceling voltage drop in supply and ground traces for sub-100ppm accuracy.
Is MAX6126BASA41+T suitable for automotive applications?
Yes - MAX6126BASA41+T is rated for −40°C to +125°C operation and specified across that full range for key parameters including tempco (5ppm/°C max), load regulation, and supply current. It meets AEC-Q100 stress test requirements for automotive electronics when used per datasheet guidelines.
MAX6126BASA41+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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:
- 10ppm/°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-SOIC
MAX6126BASA41+T FAQ
1.How can I place an order for MAX6126BASA41+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6126BASA41+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 MAX6126BASA41+T reliable?
The price and inventory of MAX6126BASA41+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6126BASA41+T is usually 5 days.
3.What payment methods are accepted for MAX6126BASA41+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6126BASA41+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6126BASA41+T?
MAX6126BASA41+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6126BASA41+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 MAX6126BASA41+T?
For technical support, including MAX6126BASA41+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6126BASA41+T requirements.
6.How does Aetrix verify that MAX6126BASA41+T is sourced from the original manufacturer or authorized distributors?
All MAX6126BASA41+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 MAX6126BASA41+T meets industry standards.
7.What is the process for return or replacement of MAX6126BASA41+T?
All MAX6126BASA41+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6126BASA41+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 MAX6126BASA41+T part is unused and in its original packaging.
Return procedure for MAX6126BASA41+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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