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Analog Devices Inc./Maxim Integrated MAX6126AASA41+T
- Part No.:
- MAX6126AASA41+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6126AASA41+T.pdf
- Description:
- IC VREF SERIES 0.02% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,850
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Product details
Overview
MAX6126AASA41+T from Maxim Integrated is an ultra-high-precision, ultra-low-noise series voltage reference delivering 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 - enabling high-resolution ADC/DAC biasing in automotive and industrial instrumentation.
For engineers reviewing the MAX6126AASA41+T datasheet, MAX6126AASA41+T pinout, MAX6126AASA41+T application, or MAX6126AASA41+T equivalent, key selection criteria include force/sense output architecture for remote sensing, 0.1µF–10µF capacitive-load stability, dropout as low as 50mV at 5mA, and A-grade SO-8 packaging qualified for automotive temperature operation.
Technical Context
The MAX6126AASA41+T implements a curvature-corrected bandgap core with laser-trimmed thin-film resistors to achieve 3ppm/°C max tempco and ±0.02% max initial accuracy. Its dual-output architecture separates force (OUTF) and sense (OUTS) paths to eliminate IR drop errors in precision current sources and remote-sensing applications.
It features a dedicated noise-reduction (NR) pin supporting 0.1µF capacitor addition to reduce wideband noise from 120nV/√Hz to 80nV/√Hz at 1kHz and suppress AC supply ripple - without increasing quiescent current beyond 380µA typical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V - precisely matches 12-bit full-scale ADC reference scaling (e.g., 4096 LSB = 4.096V). |
| Initial Accuracy | ±0.02% (max) at +25°C - enables <1 LSB error in 16-bit systems without calibration. |
| Tempco | 3ppm/°C (max) over –40°C to +125°C - ensures ≤0.5mV drift across full automotive range. |
| Flicker Noise | 2.4µVP-P (0.1Hz–10Hz) - critical for low-frequency precision measurements in digital voltmeters. |
| Wideband Noise | 120nV/√Hz (no NR cap), 80nV/√Hz (with 0.1µF NR cap) at 1kHz - supports high-SNR signal chains. |
| Dropout Voltage | 50mV (min) at 5mA load - allows operation from 4.146V supply in 4.2V battery-backed systems. |
| Load Regulation | 2µV/mA (sourcing), 5µV/mA (sinking) - maintains stability under dynamic load changes in process control loops. |
Pinout & Package
MAX6126AASA41+T is housed in an 8-pin SO package (SOIC-8, 150mil width), RoHS-compliant and qualified for automotive temperature range (–40°C to +125°C). The package supports standard reflow soldering (260°C peak) and offers 471mW power dissipation at +70°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - NR | Noise Reduction Input | Accepts 0.1µF capacitor to reduce wideband noise by 33% and improve PSRR; left open if unused. |
| 2 - IN | Positive Supply Input | Operates from 4.3V to 12.6V; supplies internal reference core and output buffer. |
| 3 - GND | Power Ground | Main ground return for internal circuitry; separate from GNDS to avoid sensing path contamination. |
| 4 - GNDS | Ground Sense | Connects to load ground point to cancel ground-return voltage drop in Kelvin configurations. |
| 5, 8 - I.C. | Internally Connected | No external connection permitted; internally tied to GND or internal nodes per die design. |
| 6 - OUTS | Voltage Sense Output | Provides feedback path to regulate OUTF; connects directly to load reference node for remote sensing. |
| 7 - OUTF | Voltage Force Output | Delivers regulated 4.096V current to load; bypassed with 0.1–10µF capacitor to GND for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Force/Sense Output Architecture | Enables true 4-wire remote sensing to eliminate line-drop errors in precision current sources and distributed systems. |
| Ultra-Low Flicker Noise | 2.4µVP-P (0.1Hz–10Hz) supports sub-µV resolution in DC-coupled instrumentation amplifiers. |
| Capacitive-Load Stability | Stable with 0.1µF to 10µF output capacitance - accommodates both fast transient response (0.1µF) and low-noise filtering (10µF). |
| Low Dropout Operation | 50mV min dropout at 5mA allows use with LDOs or battery-supplied rails near reference voltage. |
| Long-Term Stability | 20ppm/1000hr (SO package) - ensures <0.1% output drift over 5 years in uncalibrated industrial systems. |
Applications
| High-Resolution A/D and D/A Converters | Precision Current Sources |
|---|---|
Use Scenario: Reference for 16-bit SAR ADC in automotive engine control unit requiring stable 4.096V full-scale span. IC Role / Device Role / Timing Role: Provides low-drift, low-noise voltage reference for ADC conversion accuracy and repeatability. Use Value: ±0.02% initial accuracy and 3ppm/°C tempco ensure <1 LSB error across –40°C to +125°C without recalibration. | Use Scenario: Programmable 10mA precision current source for 4–20mA loop transmitter in process automation. IC Role / Device Role / Timing Role: Serves as stable voltage reference for op-amp-controlled current mirror with force/sense outputs. Use Value: OUTF/OUTS/GNDS Kelvin connections eliminate trace resistance errors, achieving <0.1% current accuracy. |
| Digital Voltmeters | High-Accuracy Industrial Control |
Use Scenario: Reference in handheld 6½-digit DVM measuring microvolt-level signals in metrology labs. IC Role / Device Role / Timing Role: Supplies ultra-low-noise 4.096V reference for integrating ADC and auto-zero amplifier stages. Use Value: 2.4µVP-P flicker noise and 80nV/√Hz wideband noise enable sub-µV resolution and low 1/f noise floor. | Use Scenario: Reference for analog input modules in PLCs monitoring thermocouple or RTD signals in factory environments. IC Role / Device Role / Timing Role: Delivers stable excitation voltage and ADC reference in multi-channel isolated I/O systems. Use Value: 20ppm/1000hr long-term stability and automotive-grade temp range ensure >10-year field reliability without drift compensation. |
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 output, ±0.02% initial accuracy, but higher 3.5ppm/°C max tempco and no force/sense outputs. | Lacks Kelvin sensing capability; unsuitable for precision current sources with long traces. | Choose ADR4540BRZ only when force/sense is unnecessary and board space favors SO-8 footprint compatibility. |
| REF5040AIDR | 4.096V output, ±0.05% initial accuracy, 3ppm/°C max tempco, no NR pin or dedicated GNDS. | Higher initial error limits use in 16-bit+ systems; no noise-reduction path for sensitive signal chains. | Select REF5040AIDR where cost sensitivity outweighs need for ultra-low noise and remote sensing. |
Compared with ADR4540BRZ and REF5040AIDR, MAX6126AASA41+T uniquely combines A-grade accuracy, integrated noise reduction, and true 4-wire sensing - making it optimal for automotive-grade precision current sources and metrology-grade DVMs where trace resistance and supply ripple must be actively canceled.
Availability
MAX6126AASA41+T is available at Aetrix Electronics and suitable for high-resolution data acquisition, automotive sensor conditioning, and industrial process control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6126AASA41+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 communications applications.
The MAX6126 series was engineered specifically for ultra-high-accuracy, ultra-low-noise voltage reference needs in 16-bit+ data converters, precision instrumentation, and automotive subsystems requiring AEC-Q200 alignment.
FAQ
What is the maximum operating temperature range for MAX6126AASA41+T?
The MAX6126AASA41+T is rated for continuous operation from –40°C to +125°C, meeting automotive-grade thermal requirements. Its electrical specifications - including ±0.02% initial accuracy and 3ppm/°C max tempco - are guaranteed across this full range, and the SO-8 package supports reflow soldering up to 260°C.
Does MAX6126AASA41+T require an external resistor like shunt references?
No, MAX6126AASA41+T is a series-mode voltage reference and does not require an external resistor. Unlike two-terminal shunt references, its 380µA quiescent supply current remains virtually independent of input voltage (≤2µA/V variation), simplifying supply design and eliminating resistor power loss and tolerance dependencies.
How does the force/sense architecture of MAX6126AASA41+T improve accuracy?
The MAX6126AASA41+T uses separate OUTF (force) and OUTS (sense) pins to implement true Kelvin sensing: OUTF delivers current to the load, while OUTS monitors voltage at the load node. This cancels voltage drops across PCB traces or wiring, maintaining 4.096V regulation accuracy at the point of use - critical for precision current sources and remote ADC references.
Can MAX6126AASA41+T drive capacitive loads up to 10µF without oscillation?
Yes, MAX6126AASA41+T is explicitly characterized and guaranteed stable with output capacitance from 0.1µF to 10µF. The device's internal compensation ensures no sustained oscillations across this range, supporting both low-ESR ceramic (0.1µF) for fast settling and bulk tantalum/electrolytic (10µF) for low-noise filtering in industrial applications.
What is the purpose of the NR pin on MAX6126AASA41+T?
The NR (Noise Reduction) pin on MAX6126AASA41+T accepts an external 0.1µF capacitor to reduce wideband noise from 120nV/√Hz to 80nV/√Hz at 1kHz and suppress AC supply ripple. It also lowers 0.1Hz–10Hz flicker noise to 0.9µVP-P, enhancing performance in precision DC measurement circuits without increasing supply current.
MAX6126AASA41+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:
- ±0.02%
- 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-SOIC
MAX6126AASA41+T FAQ
1.How can I place an order for MAX6126AASA41+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6126AASA41+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 MAX6126AASA41+T reliable?
The price and inventory of MAX6126AASA41+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6126AASA41+T is usually 5 days.
3.What payment methods are accepted for MAX6126AASA41+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6126AASA41+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6126AASA41+T?
MAX6126AASA41+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6126AASA41+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 MAX6126AASA41+T?
For technical support, including MAX6126AASA41+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6126AASA41+T requirements.
6.How does Aetrix verify that MAX6126AASA41+T is sourced from the original manufacturer or authorized distributors?
All MAX6126AASA41+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 MAX6126AASA41+T meets industry standards.
7.What is the process for return or replacement of MAX6126AASA41+T?
All MAX6126AASA41+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6126AASA41+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 MAX6126AASA41+T part is unused and in its original packaging.
Return procedure for MAX6126AASA41+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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