My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6126AASA41+
- Part No.:
- MAX6126AASA41+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6126AASA41+.pdf
- Description:
- IC VREF SERIES 0.02% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:412
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6126AASA41+ 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. It operates from 4.3V to 12.6V supply, supports ±10mA load current, and enables remote sensing via separate force (OUTF) and sense (OUTS) outputs - ideal for high-resolution 12-bit/16-bit ADC/DAC biasing in precision test equipment.
For engineers reviewing the MAX6126AASA41+ datasheet, MAX6126AASA41+ pinout, MAX6126AASA41+ application, or MAX6126AASA41+ equivalent, this page delivers verified specifications, validated pin functions, automotive-grade thermal stability data, noise-reduction capacitor guidance, and real-world design constraints for ATE and industrial control systems.
Technical Context
The MAX6126AASA41+ employs curvature-correction circuitry and laser-trimmed thin-film resistors to achieve 3ppm/°C max tempco and ±0.02% max initial accuracy across -40°C to +125°C. Its proprietary low-noise architecture produces 2.4µVP-P (0.1Hz–10Hz) and 120nV/√Hz (1kHz, no NR cap) wideband noise - reduced to 80nV/√Hz with 0.1µF on NR pin.
It features dual-output Kelvin configuration (OUTF/OUTS/GNDS) for remote sensing, dropout as low as 50mV at 5mA, and stable operation with 0.1µF–10µF output capacitance. Supply current remains tightly regulated at 380µA (typ) with only 2µA/V variation vs. input voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V - precisely matches 12-bit full-scale ADC reference (212 = 4096), eliminating scaling error in digital multimeters and data acquisition systems. |
| Initial Accuracy | ±0.02% (max) at +25°C - ensures ≤0.83mV absolute error before calibration, critical for Class I precision instrumentation. |
| Tempco | 3ppm/°C (max) from -40°C to +125°C - contributes ≤0.5mV drift over full automotive range, enabling uncalibrated operation in engine control units. |
| Low-Frequency Noise | 2.4µVP-P (0.1Hz–10Hz) - limits RMS noise contribution to <0.8µV in 1s settling, essential for sub-16-bit resolution measurements. |
| Dropout Voltage | 50mV (typ) at 5mA load - allows operation from 4.146V supply, supporting single-supply 4.2V Li-ion battery-powered portable calibrators. |
| Load Regulation | 2µV/mA (sourcing), 5µV/mA (sinking) - maintains ≤50µV shift across 10mA load swing, preserving linearity in programmable current sources. |
| Long-Term Stability | 20ppm/1000hr (SO package) - guarantees <0.083mV drift per 1000hr, meeting 1-year calibration interval requirements for metrology standards. |
Pinout & Package
MAX6126AASA41+ is housed in an 8-pin SO (Small Outline) package with exposed pad (RoHS-compliant, lead-free). Pin 1 is marked by a beveled corner or dot; pins are numbered counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 NR | Noise Reduction Input | Accepts 0.1µF capacitor to reduce 1kHz wideband noise from 120nV/√Hz to 80nV/√Hz; floating if unused. |
| 2 IN | Positive Supply Input | Operates from 4.3V to 12.6V; supplies 380µA quiescent current independent of VIN within spec range. |
| 3 GND | Power Ground Reference | Main ground return for internal circuitry; must be low-impedance path to system ground plane. |
| 4 GNDS | Ground Sense Terminal | Connects to load-side ground point to cancel IR drop in ground return path (Kelvin sensing). |
| 5, 8 I.C. | Internally Connected | No external connection permitted; internally tied to GND or other nodes per die design. |
| 6 OUTS | Voltage Sense Output | Provides feedback to internal regulator; connect directly to load's reference input node for remote sensing. |
| 7 OUTF | Voltage Force Output | Delivers regulated 4.096V to load; short to OUTS at load point to eliminate trace resistance error. |
Key Features
| Feature | Design Value |
|---|---|
| Force/Sense Outputs (OUTF/OUTS/GNDS) | Enables true 4-wire Kelvin sensing to nullify voltage drop in PCB traces and connectors - critical for <10ppm accuracy in automated test fixtures. |
| Ultra-Low Flicker Noise | 2.4µVP-P (0.1Hz–10Hz) - minimizes low-frequency drift in precision integrators and digital voltmeter front-ends. |
| Wide Supply Range | 4.3V to 12.6V - supports direct operation from 5V, 9V, or 12V rails without LDO pre-regulation in industrial PLC modules. |
| Capacitive Load Stability | Stable with 0.1µF–10µF CLOAD - accommodates ceramic, tantalum, or polymer output caps for EMI filtering and transient suppression. |
| Automotive Temperature Range | -40°C to +125°C - qualified for under-hood and transmission-control applications without derating. |
Applications
| High-Resolution Data Acquisition | Automotive Engine Control Unit (ECU) |
|---|---|
|
Use Scenario: 16-bit SAR ADC in portable digital multimeter sampling sensor signals at 100kSPS. IC Role / Device Role / Timing Role: Primary voltage reference supplying precise 4.096V VREF to ADC, with OUTF/OUTS/GNDS eliminating layout-induced errors. Use Value: Enables ±0.5 LSB integral nonlinearity (INL) by maintaining <1ppm output drift during 10ms conversion window. |
Use Scenario: Fuel injector driver IC requiring calibrated current source for closed-loop fuel metering. IC Role / Device Role / Timing Role: Reference for precision current mirror generating 200mA injector drive current with <0.1% tolerance. Use Value: Achieves ±0.2% current accuracy over -40°C to +125°C, reducing emissions variance by 12% vs. standard references. |
| ATE Semiconductor Test System | Industrial Process Controller |
|
Use Scenario: Parametric test head sourcing bias voltages to DUT pins during wafer probing. IC Role / Device Role / Timing Role: Low-noise reference for 18-bit DAC generating stimulus voltages; NR pin decoupled to suppress switching noise from adjacent drivers. Use Value: Reduces 1kHz noise floor by 35nV/√Hz, enabling accurate measurement of sub-100nA leakage currents. |
Use Scenario: Analog input module in distributed control system measuring 4–20mA loop current via precision shunt. IC Role / Device Role / Timing Role: Reference for 24-bit ΣΔ ADC converting shunt voltage; GNDS connected at PLC terminal block to reject ground loop errors. Use Value: Eliminates 2mV ground offset error, improving 4–20mA reading resolution to 0.005% of full scale. |
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, 3ppm/°C tempco, but higher 3.75µVP-P (0.1Hz–10Hz) noise and no force/sense outputs. | Lacks Kelvin sensing - unsuitable for long-trace or high-current remote loads where trace resistance exceeds 10mΩ. | Select when board space is constrained (SOIC-8 vs. SOIC-8 identical footprint) and remote sensing is unnecessary. |
| REF5040AIDR | 4.096V output, ±0.02% initial accuracy, 3ppm/°C tempco, 2.2µVP-P noise, but requires external 10µF bypass cap and has no NR pin for noise tuning. | No noise reduction pin - cannot optimize wideband noise below 100nV/√Hz without additional filtering components. | Choose for cost-sensitive designs where 80nV/√Hz noise is acceptable and layout allows tight capacitor placement. |
Compared with ADR4540BRZ and REF5040AIDR, MAX6126AASA41+ uniquely combines Kelvin force/sense outputs, tunable wideband noise (via NR pin), and automotive-grade thermal stability in a standard SOIC-8 - making it the only option for ATE load-board references requiring <1ppm trace-error cancellation and <80nV/√Hz noise.
Availability
MAX6126AASA41+ is available at Aetrix Electronics and suitable for high-resolution A/D converters, automotive ECU calibration systems, and industrial process controllers requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for MAX6126AASA41+ 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 targets ultra-precision voltage reference needs in metrology, automated test equipment, and safety-critical control systems - emphasizing low noise, high accuracy, and robust thermal performance.
FAQ
What is the maximum allowable supply voltage for MAX6126AASA41+?
The MAX6126AASA41+ supports a supply voltage range of 4.3V to 12.6V, as specified in the Electrical Characteristics table for VOUT = 4.096V. Exceeding 12.6V violates Absolute Maximum Ratings and may cause permanent damage. Operation below 4.3V risks dropout and loss of regulation - minimum input is VOUT + 200mV (4.296V), but guaranteed performance starts at 4.3V.
Can MAX6126AASA41+ drive a 10mA load while maintaining accuracy?
Yes, MAX6126AASA41+ is fully specified for ±10mA sink/source current. Load regulation is 2µV/mA (sourcing) and 5µV/mA (sinking), resulting in ≤50µV total shift across full 10mA swing - well within its ±0.02% (±0.83mV) initial accuracy band. This capability enables direct driving of op-amp reference inputs or precision current mirrors without buffering.
How does the NR pin reduce noise in MAX6126AASA41+?
The NR pin on MAX6126AASA41+ accepts a 0.1µF capacitor to reduce wideband noise from 120nV/√Hz to 80nV/√Hz at 1kHz. Internally, this capacitor filters high-frequency noise generated by the reference core. The 0.1µF value is optimized - smaller values yield diminishing returns; larger values increase turn-on time to 20ms but do not further reduce 1kHz noise.
What is the purpose of separate OUTF, OUTS, and GNDS pins on MAX6126AASA41+?
These pins implement a 4-wire Kelvin connection: OUTF delivers current to the load, OUTS senses voltage at the load node, and GNDS references ground at the load. By separating force and sense paths, MAX6126AASA41+ cancels voltage drops across PCB traces and connectors - essential for maintaining <10ppm accuracy in ATE load boards where trace resistance can exceed 50mΩ.
Is MAX6126AASA41+ suitable for automotive applications?
Yes, MAX6126AASA41+ is qualified for the automotive temperature range (-40°C to +125°C) and meets AEC-Q100 stress-test requirements. Its 3ppm/°C max tempco, 20ppm/1000hr long-term stability, and thermal hysteresis of 20ppm (SO package) ensure reliable operation in engine control, transmission, and ADAS modules without recalibration across lifetime thermal cycling.
MAX6126AASA41+ 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):
- 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+ FAQ
1.How can I place an order for MAX6126AASA41+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6126AASA41+ 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+ reliable?
The price and inventory of MAX6126AASA41+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6126AASA41+ is usually 5 days.
3.What payment methods are accepted for MAX6126AASA41+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6126AASA41+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6126AASA41+?
MAX6126AASA41+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6126AASA41+ 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+?
For technical support, including MAX6126AASA41+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6126AASA41+ requirements.
6.How does Aetrix verify that MAX6126AASA41+ is sourced from the original manufacturer or authorized distributors?
All MAX6126AASA41+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX6126AASA41+?
All MAX6126AASA41+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6126AASA41+, 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+ part is unused and in its original packaging.
Return procedure for MAX6126AASA41+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6126AASA41+ 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…
