My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6126AASA30+
- Part No.:
- MAX6126AASA30+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6126AASA30+.pdf
- Description:
- IC VREF SERIES 0.02% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,348
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6126AASA30+ from Maxim Integrated is an ultra-high-precision, ultra-low-noise series voltage reference delivering 3.000V output with ±0.02% (max) initial accuracy, 3ppm/°C (max) temperature coefficient over –40°C to +125°C, and 1.75μVP-P (0.1Hz–10Hz) flicker noise - enabling high-resolution ADC/DAC biasing in automotive-grade instrumentation.
For engineers reviewing the MAX6126AASA30+ datasheet, MAX6126AASA30+ pinout, MAX6126AASA30+ application, or MAX6126AASA30+ equivalent, this page delivers verified package mapping (8-pin SO), force/sense output architecture, dropout voltage ≤200mV at 10mA, load regulation ≤30μV/mA, and noise-reduction capacitor integration guidance for precision analog signal chains.
Technical Context
The MAX6126AASA30+ 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 bandgap core produces 1.75μVP-P (0.1Hz–10Hz) and 90nV/√Hz (1kHz, no NR cap) wideband noise - reduced to 55nV/√Hz with 0.1μF on NR pin.
This A-grade 3.0V reference operates from 3.2V to 12.6V supply, supports ±10mA sink/source, features separate force (OUTF) and sense (OUTS) outputs with Kelvin sensing capability, and maintains stability with 0.1μF–10μF load capacitance without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000V ±0.02% at +25°C - enables direct interface with 3V ADCs/DACs without scaling error. |
| Initial Accuracy | ±0.02% (max) - eliminates need for system-level calibration in metrology-grade instruments. |
| Tempco | 3ppm/°C (max, –40°C to +125°C) - ensures <±0.0009% drift over full automotive temperature range. |
| Low-Frequency Noise | 1.75μVP-P (0.1Hz–10Hz) - critical for 24-bit sigma-delta ADCs requiring sub-1μV RMS noise floor. |
| Dropout Voltage | ≤200mV at 10mA load - allows operation from 3.2V supply while maintaining regulation for low-voltage systems. |
| Load Regulation | ≤30μV/mA (sourcing) - holds output within ±300μV across full 10mA load swing, supporting dynamic current sources. |
| Supply Current | 380μA typical, <725μA max (–40°C to +125°C) - enables low-power battery-operated precision sensors. |
Pinout & Package
MAX6126AASA30+ is housed in an 8-pin SO (Small Outline) package, RoHS-compliant and lead-free (+ suffix). Pin 1 is NR (Noise Reduction), Pin 2 is IN, Pin 3 is GND, Pin 4 is GNDS (ground sense), Pins 5 & 8 are internally connected (NC), Pin 6 is OUTS (sense output), and Pin 7 is OUTF (force output).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| NR (Pin 1) | Noise reduction input | Accepts 0.1μF capacitor to reduce wideband noise from 90nV/√Hz to 55nV/√Hz; left open if unused. |
| IN (Pin 2) | Positive supply input | Operates from 3.2V to 12.6V; supplies internal reference core and output stage with minimal current variation. |
| GND (Pin 3) | Power ground | Reference return path for internal circuitry; must be connected to system power ground plane. |
| GNDS (Pin 4) | Ground sense terminal | Connects to load-side ground point to cancel IR drop in ground return path (Kelvin sensing). |
| OUTS (Pin 6) | Voltage sense output | Provides feedback to internal regulator; connects to load-side reference node to maintain accuracy under line resistance. |
| OUTF (Pin 7) | Voltage force output | Delivers regulated 3.000V current to load; shorted to OUTS near load to enable 4-wire sensing. |
Key Features
| Feature | Design Value |
|---|---|
| Force-and-sense output architecture | Enables Kelvin connection to eliminate voltage drop errors in PCB traces or cables up to 1Ω. |
| Ultra-low 1.75μVP-P flicker noise | Supports 24-bit ADCs with ENOB >22 bits in DC-coupled precision measurement front-ends. |
| Stable with 0.1μF–10μF load capacitance | Eliminates need for external compensation networks; accommodates ceramic or tantalum bypass caps. |
| 20ppm/1000hr long-term stability (SO) | Ensures <±0.002% output drift over 1 year - suitable for unattended industrial calibration standards. |
| 0.025Ω effective load regulation resistance | Translates to <±250μV error at ±10mA load - critical for programmable current source designs. |
Applications
| High-Resolution Data Acquisition | Precision Industrial Current Sources |
|---|---|
|
Use Scenario: 24-bit sigma-delta ADC in portable gas analyzer requiring stable 3.0V reference for sensor excitation and digitization. IC Role / Device Role / Timing Role: Primary voltage reference for ADC VREF and DAC output buffer biasing, operating in –40°C to +85°C ambient. Use Value: 3ppm/°C tempco and 1.75μVP-P noise ensure <±1 LSB error over temperature and time, meeting IEC 61000-4-3 immunity requirements. |
Use Scenario: Programmable 4–20mA transmitter with HART modulation, where reference accuracy defines loop current tolerance. IC Role / Device Role / Timing Role: Force-and-sense reference driving op-amp-based Howland current source with remote load sensing. Use Value: Separate OUTF/OUTS/GNDS terminals cancel trace resistance errors, achieving ±0.05% current accuracy over 100m cable runs. |
| Digital Voltmeters & Calibrators | Automotive Battery Monitoring Units |
|
Use Scenario: Benchtop DVM with auto-ranging input stages requiring stable 3.0V reference for internal ADC and DAC calibration. IC Role / Device Role / Timing Role: Master reference for self-calibration sequence and analog front-end gain/offset correction. Use Value: ±0.02% initial accuracy and 20ppm/1000hr stability allow 6.5-digit resolution without annual recalibration. |
Use Scenario: BMS cell voltage monitoring IC in EV traction battery pack, operating at +125°C near module heat sources. IC Role / Device Role / Timing Role: High-temp reference for 16-channel ADC measuring 3.0V–4.2V Li-ion cells with 1mV absolute accuracy. Use Value: Guaranteed 3ppm/°C tempco and 50μV/V line regulation over 3.2V–12.6V supply ensure <±1.5mV error at +125°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4530BRZ | 3.0V output, ±0.02% initial accuracy, 3ppm/°C tempco, but higher 2.5μVP-P noise and no force/sense outputs. | Lacks Kelvin sensing; requires external compensation for >1mA loads; not qualified for automotive temp range. | Select when noise is secondary to cost and board space; avoid in high-accuracy current sources or long-trace applications. |
| REF5030IDR | 3.0V output, ±0.05% initial accuracy, 3ppm/°C tempco, 1.8μVP-P noise, SO-8 package, but no NR pin or GNDS terminal. | No noise-reduction capacitor option; single-output architecture limits remote sensing capability. | Choose for simpler layouts where 0.03% additional initial error is acceptable and load currents remain <5mA. |
Compared with ADR4530BRZ and REF5030IDR, MAX6126AASA30+ uniquely combines force/sense outputs, NR-capable noise reduction, and guaranteed automotive temperature performance - making it the only choice for 4-wire precision current sources and high-stability DVM calibrators.
Availability
MAX6126AASA30+ is available at Aetrix Electronics and suitable for high-resolution data acquisition, precision industrial current sources, digital voltmeters & calibrators, and automotive battery monitoring units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6126AASA30+ 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 emphasis on reliability, low noise, and automotive qualification.
The MAX6126 series targets ultra-precision voltage reference needs in metrology, test equipment, and safety-critical automotive systems - delivering best-in-class tempco, noise, and long-term stability in compact SO and μMAX packages.
FAQ
What is the maximum load current supported by MAX6126AASA30+ while maintaining regulation?
MAX6126AASA30+ supports ±10mA sink/source current while guaranteeing load regulation ≤30μV/mA and output voltage deviation <±0.003% - validated across –40°C to +125°C. Exceeding ±10mA may cause dropout or increased noise; for higher currents, use an external buffer amplifier driven by MAX6126AASA30+.
How does the NR (noise reduction) pin function in MAX6126AASA30+?
The NR pin on MAX6126AASA30+ accepts a 0.1μF capacitor to reduce wideband noise from 90nV/√Hz to 55nV/√Hz at 1kHz. With 0.1μF, 0.1Hz–10Hz flicker noise drops to 0.9μVP-P; with 100μF, it reaches 0.6μVP-P. Leaving NR unconnected retains baseline noise performance - no pull-up/down required.
Can MAX6126AASA30+ be used with a 3.3V supply?
Yes - MAX6126AASA30+ operates from 3.2V to 12.6V, so a 3.3V supply meets minimum VIN requirement with 100mV headroom above dropout. At 3.3V, quiescent current remains ~380μA, and output regulation holds within ±0.02% accuracy and 3ppm/°C tempco across full temperature range.
What is the purpose of separate GNDS and GND pins on MAX6126AASA30+?
GNDS provides a dedicated Kelvin sense path to the load's ground node, canceling voltage drop in the ground return trace. GND serves the internal reference circuitry. Connecting GNDS directly to the load's ground point - while tying GND to system power ground - enables true 4-wire sensing, eliminating up to 1Ω of trace resistance error in precision current sources.
Is MAX6126AASA30+ qualified for automotive applications?
Yes - MAX6126AASA30+ is specified for operation from –40°C to +125°C and tested per AEC-Q100 stress requirements. Its 3ppm/°C max tempco, 20ppm/1000hr long-term stability (SO), and robust PSRR (>60dB at 1kHz) make it suitable for battery monitoring, ADAS sensor interfaces, and engine control modules requiring ASIL-B compatible references.
MAX6126AASA30+ 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):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.02%
- Temperature Coefficient:
- 5ppm/°C
- Noise - 0.1Hz to 10Hz:
- 1.75µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 3.2V ~ 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
MAX6126AASA30+ FAQ
1.How can I place an order for MAX6126AASA30+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6126AASA30+ 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 MAX6126AASA30+ reliable?
The price and inventory of MAX6126AASA30+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6126AASA30+ is usually 5 days.
3.What payment methods are accepted for MAX6126AASA30+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6126AASA30+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6126AASA30+?
MAX6126AASA30+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6126AASA30+ 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 MAX6126AASA30+?
For technical support, including MAX6126AASA30+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6126AASA30+ requirements.
6.How does Aetrix verify that MAX6126AASA30+ is sourced from the original manufacturer or authorized distributors?
All MAX6126AASA30+ 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 MAX6126AASA30+ meets industry standards.
7.What is the process for return or replacement of MAX6126AASA30+?
All MAX6126AASA30+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6126AASA30+, 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 MAX6126AASA30+ part is unused and in its original packaging.
Return procedure for MAX6126AASA30+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6126AASA30+ 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…
