My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6126AASA33+T
- Part No.:
- MAX6126AASA33+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- -
- Datasheet:
-
MAX6126AASA33+T.pdf
- Description:
- IC VREF SERIES 0.02% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,136
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6126AASA33+T from Maxim Integrated is an ultra-high-precision, ultra-low-noise series voltage reference delivering 3.300V output with ±0.02% (max) initial accuracy, 3ppm/°C (max) temperature coefficient over –40°C to +125°C, and 1.95µVP-P (0.1Hz–10Hz) flicker noise - enabling high-resolution ADC/DAC biasing in automotive and industrial instrumentation.
For engineers reviewing the MAX6126AASA33+T datasheet, MAX6126AASA33+T pinout, MAX6126AASA33+T application, or MAX6126AASA33+T equivalent, this page provides verified package mapping (8-pin SO), force/sense output architecture, dropout voltage ≤200mV at 10mA, load regulation ≤40µV/mA, and noise-reduction capacitor interface for 60nV/√Hz → 60nV/√Hz wideband noise optimization.
Technical Context
The MAX6126AASA33+T 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 separates force (OUTF) and sense (OUTS) outputs to eliminate line-drop errors in precision current sources and remote-sensing applications.
It operates from 3.5V to 12.6V supply, draws 380µA quiescent current (independent of VIN), supports 0.1µF–10µF capacitive loads, and integrates a dedicated NR pin for external 0.1µF capacitor to reduce 1kHz wideband noise from 100nV/√Hz to 60nV/√Hz - without increasing supply current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.300V ±0.02% at +25°C - enables direct interface with 3.3V logic and SAR ADC reference inputs without scaling. |
| Tempco (–40°C to +125°C) | ≤5ppm/°C (A grade SO) - ensures <±165µV drift over full automotive range, critical for calibration stability. |
| Flicker Noise (0.1Hz–10Hz) | 1.95µVP-P - minimizes low-frequency error in precision weigh scales and digital voltmeters. |
| Wideband Noise (1kHz) | 100nV/√Hz (no NR cap); 60nV/√Hz (with 0.1µF on NR) - directly reduces quantization noise floor in 20-bit+ converters. |
| Dropout Voltage | ≤200mV at 10mA load - allows operation from 3.5V supply while maintaining regulation for 3.3V systems. |
| Load Regulation | ≤40µV/mA sourcing - maintains <±400µV error across full 10mA load range, supporting active filter and DAC buffer designs. |
| Supply Current | 380µA typical, ≤725µA over –40°C to +125°C - enables low-power battery-backed precision measurement nodes. |
Pinout & Package
MAX6126AASA33+T is housed in an 8-pin SO (Small Outline) package, RoHS-compliant and lead-free, with exposed pad not electrically connected. Pin 1 is marked by notch or dot; pins are numbered counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 NR | Noise Reduction | Accepts 0.1µF capacitor to reduce 1kHz noise from 100nV/√Hz to 60nV/√Hz; left open if unused. |
| 2 IN | Positive Supply Input | Operates from 3.5V to 12.6V; supplies internal bandgap and error amplifier; bypass to GND recommended. |
| 3 GND | Power Ground | Main ground return for internal circuitry; separate from GNDS to enable Kelvin sensing. |
| 4 GNDS | Ground Sense | Connects to load-side ground point to cancel ground path IR drop in precision current sources. |
| 5, 8 I.C. | Internally Connected | No external connection; internally tied to GND or floating - must remain unconnected per datasheet. |
| 6 OUTS | Voltage Sense Output | High-impedance feedback node; connects to load-side reference point to regulate OUTF voltage remotely. |
| 7 OUTF | Voltage Force Output | Low-impedance power output; delivers up to 10mA; bypassed with 0.1–10µF capacitor to GND near load. |
Key Features
| Feature | Design Value |
|---|---|
| Force/Sense Output Architecture | Separates OUTF (current delivery) and OUTS (voltage sensing) to eliminate line-drop errors in 4-wire remote sensing. |
| Ultra-Low Flicker Noise | 1.95µVP-P (0.1Hz–10Hz) enables sub-20-bit effective resolution in precision data acquisition systems. |
| Curvature-Corrected Bandgap Core | Laser-trimmed thin-film resistors deliver ≤5ppm/°C tempco over –40°C to +125°C without external compensation. |
| Stable with Wide Capacitive Load Range | Guaranteed stability with 0.1µF–10µF output capacitance - supports both fast transient response (0.1µF) and ripple suppression (10µF). |
| Low Dropout & High PSRR | 200mV max dropout at 10mA; >60dB PSRR at 100Hz - rejects supply ripple in noisy industrial power rails. |
Applications
| High-Resolution A/D and D/A Converters | Precision Current Sources |
|---|---|
Use Scenario: Reference for 24-bit sigma-delta ADC in portable gas analyzer requiring <10ppm total error over temperature. IC Role / Device Role / Timing Role: Primary voltage reference establishing absolute scale for analog input conversion. Use Value: ±0.02% initial accuracy and 5ppm/°C tempco limit full-scale error to <±0.03% across –40°C to +85°C. |
Use Scenario: Programmable 10mA current source for RTD excitation in industrial temperature transmitters. IC Role / Device Role / Timing Role: Precision 3.3V reference driving MOSFET gate via OUTS/OUTF Kelvin connection. Use Value: Force/sense architecture cancels PCB trace resistance, maintaining <±0.1% current accuracy despite 100mΩ line impedance. |
| Digital Voltmeters | High-Accuracy Industrial Process Control |
Use Scenario: 6½-digit bench DVM requiring stable 3.3V reference for autoranging front-end amplifiers. IC Role / Device Role / Timing Role: Low-drift, low-noise reference for gain calibration and offset nulling circuits. Use Value: 1.95µVP-P flicker noise and 20ppm/1000hr long-term stability ensure <0.001% reading repeatability over 1000 hours. |
Use Scenario: Reference for analog output module (4–20mA) in PLC rack operating in factory environments (–25°C to +70°C). IC Role / Device Role / Timing Role: Regulated 3.3V source for DAC reference and op-amp biasing in isolated output stage. Use Value: 380µA quiescent current and 3.5V min input allow direct use from 5V backplane rail with margin for aging and ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4533BRZ | 3.3V, ±0.02% initial accuracy, 3ppm/°C max tempco, but higher 3.8µVP-P flicker noise and no force/sense outputs. | Lacks Kelvin sensing; unsuitable for precision current sources with long traces or high load currents. | Select when ultra-low noise is secondary to cost and footprint; requires external buffering for load regulation. |
| REF5033AIDR | 3.3V, ±0.05% initial accuracy, 3ppm/°C max tempco, 1.6µVP-P noise, but 1.2mA quiescent current and no NR pin. | Higher supply current limits battery life; no noise-reduction capacitor option restricts wideband noise optimization. | Prefer where long-term stability (15ppm/1000hr) outweighs low-noise priority; avoid in space-constrained or low-power designs. |
Compared with ADR4533BRZ and REF5033AIDR, the MAX6126AASA33+T uniquely combines force/sense architecture, 0.1µF NR-capable wideband noise reduction, and 380µA quiescent current - making it optimal for remote-sensing, low-power, and high-SNR precision analog systems.
Availability
MAX6126AASA33+T is available at Aetrix Electronics and suitable for high-resolution data acquisition, precision current sourcing, and industrial process control applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6126AASA33+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, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX6126 family was engineered specifically for ultra-precision, low-noise voltage referencing in high-resolution data converters and metrology-grade instrumentation - prioritizing tempco, noise, and long-term stability over cost or integration density.
FAQ
What is the maximum load current supported by the MAX6126AASA33+T?
The MAX6126AASA33+T supports up to 10mA of sourced or sunk load current while maintaining specified accuracy and regulation. Load regulation is guaranteed ≤40µV/mA for sourcing (0–10mA) and ≤40µV/mA for sinking (–10mA to 0), ensuring stable 3.3V reference performance under dynamic load conditions encountered in DAC buffers and active filters.
Can the MAX6126AASA33+T be used with a 3.3V supply rail?
No - the MAX6126AASA33+T requires a minimum supply voltage of 3.5V (VIN ≥ VOUT + 200mV) to maintain regulation. Using a 3.3V rail would place the device below dropout, causing output collapse. A 5V or higher supply is recommended to ensure margin for line drop, ripple, and temperature variation.
How does the NR (Noise Reduction) pin function on the MAX6126AASA33+T?
The NR pin on the MAX6126AASA33+T accepts an external 0.1µF capacitor to reduce 1kHz wideband noise from 100nV/√Hz to 60nV/√Hz. It has no effect on 0.1Hz–10Hz flicker noise (1.95µVP-P). Leaving NR unconnected retains default noise performance; adding larger capacitors (e.g., 100µF) further reduces flicker noise to 0.6µVP-P, but increases turn-on time to 20ms.
What is the purpose of separate OUTF and OUTS pins on the MAX6126AASA33+T?
OUTF (Force Output) delivers current to the load, while OUTS (Sense Output) provides a high-impedance feedback node connected directly to the load's reference point. This Kelvin configuration cancels voltage drop across PCB traces or cables between the MAX6126AASA33+T and the load - essential for precision current sources and remote ADC references where trace resistance would otherwise degrade accuracy.
Is the MAX6126AASA33+T qualified for automotive applications?
Yes - the MAX6126AASA33+T is rated for the automotive temperature range of –40°C to +125°C and meets AEC-Q100 stress test requirements. Its 5ppm/°C max tempco, 20ppm/1000hr long-term stability, and robust ESD tolerance (±2kV HBM) make it suitable for engine control units, battery management systems, and ADAS sensor signal conditioning where reference stability is mission-critical.
MAX6126AASA33+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Reference Type:
- -
- Output Type:
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Tolerance:
- -
- Temperature Coefficient:
- -
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6126AASA33+T FAQ
1.How can I place an order for MAX6126AASA33+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6126AASA33+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 MAX6126AASA33+T reliable?
The price and inventory of MAX6126AASA33+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6126AASA33+T is usually 5 days.
3.What payment methods are accepted for MAX6126AASA33+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6126AASA33+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6126AASA33+T?
MAX6126AASA33+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6126AASA33+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 MAX6126AASA33+T?
For technical support, including MAX6126AASA33+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6126AASA33+T requirements.
6.How does Aetrix verify that MAX6126AASA33+T is sourced from the original manufacturer or authorized distributors?
All MAX6126AASA33+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 MAX6126AASA33+T meets industry standards.
7.What is the process for return or replacement of MAX6126AASA33+T?
All MAX6126AASA33+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6126AASA33+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 MAX6126AASA33+T part is unused and in its original packaging.
Return procedure for MAX6126AASA33+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6126AASA33+T 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…
