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Analog Devices Inc./Maxim Integrated MAX6070AAUT12+T
- Part No.:
- MAX6070AAUT12+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
MAX6070AAUT12+T.pdf
- Description:
- IC VREF SERIES 0.04% SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:6,363
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Product details
Overview
MAX6070AAUT12+T from Analog Devices is a precision 1.25V series voltage reference IC with ultra-low 1/f noise (4.8µVP-P, 0.1Hz–10Hz), 6ppm/°C max temperature drift (A grade), and ±0.04% initial accuracy - designed for high-resolution ADC/DAC biasing in industrial process control systems requiring stable, low-drift excitation.
For engineers reviewing the MAX6070AAUT12+T datasheet, MAX6070AAUT12+T pinout, MAX6070AAUT12+T application, or MAX6070AAUT12+T equivalent, key selection criteria include its 6-pin SOT23 package, filter-enabled wideband noise suppression, 10mA sourcing/sinking capability, and AEC-Q100 qualification for automotive-grade reliability under -40°C to +125°C operation.
Technical Context
The MAX6070AAUT12+T implements a bandgap-based series voltage reference architecture with separate force (OUTF) and sense (OUTS) outputs enabling Kelvin sensing for load regulation accuracy. Its integrated FILTER pin accepts an external 0.1µF capacitor to suppress high-frequency noise beyond 10Hz - a feature absent in the MAX6071 variant.
It operates across 2.7V to 5.5V supply voltage with 150µA typical quiescent current, supports ±10mA load current, and achieves 85dB ripple rejection at 60Hz. The device uses dual ground paths (GNDF/GNDS) to isolate force and sense return currents, minimizing ground-bounce-induced errors in precision measurement front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.250V ±0.04% (±0.5mV) at +25°C - enables direct interface with 12-bit+ SAR ADCs without gain calibration. |
| Temp Drift | 6ppm/°C max (A grade) - contributes ≤75ppm error over -40°C to +125°C, critical for uncalibrated field instrumentation. |
| 1/f Noise | 4.8µVP-P (0.1Hz–10Hz) - sets fundamental limit on DC stability in precision weigh scales and strain-gauge bridges. |
| Load Current | ±10mA sourcing/sinking - drives 100Ω loads at 1.25V while maintaining regulation, supporting active filter and transducer bias circuits. |
| Supply Range | 2.7V to 5.5V - compatible with single Li-ion, 3.3V, and 5V system rails without external regulators. |
| Quiescent Current | 150µA typical - allows battery-powered portable test equipment to achieve >1-year runtime on coin cells. |
| Dropout Voltage | 230mV max at 10mA - ensures regulation down to VIN = 1.48V, enabling use with low-headroom LDOs or buck converters. |
Pinout & Package
MAX6070AAUT12+T is housed in a 6-pin SOT23 package (package code U6+5A, outline 21-0058), optimized for space-constrained PCB layouts in industrial sensor modules and automotive ECUs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FILTER | Noise filter input | Accepts 0.1µF capacitor to GND; enables high-frequency noise attenuation without affecting DC accuracy. |
| GNDF | Force ground | Return path for OUTF current only - isolates reference output current from sense path to prevent IR drop errors. |
| GND | Power ground | Main power return for internal circuitry; must be connected to system ground plane near IN pin. |
| EN | Enable control | Active-high logic input (VIH ≥ 0.7×VIN); enables shutdown mode drawing only 6µA, ideal for power-gated subsystems. |
| IN | Supply input | Accepts 2.7V–5.5V; internal regulation maintains stable 1.25V output despite input ripple up to 85dB rejection at 60Hz. |
| OUTS | Sense output | High-impedance Kelvin sense node - connects directly to load ground to eliminate trace resistance error in feedback loops. |
| OUTF | Force output | Low-impedance drive node - shorted to OUTS near load to deliver regulated 1.25V with <100µV load regulation error. |
Key Features
| Feature | Design Value |
|---|---|
| Separate force/sense outputs | Eliminates voltage drop error from PCB trace resistance, enabling <0.01% load regulation accuracy in 4-wire configurations. |
| Integrated noise filter pin | Reduces thermal noise floor by 50% (to 3µVRMS) above 10Hz when 0.1µF capacitor is applied - essential for FFT-based spectral analysis systems. |
| AEC-Q100 qualified | Validated for automotive applications including engine control and ADAS sensor biasing per Grade 1 (-40°C to +125°C) stress testing. |
| 0.04% initial accuracy | Removes need for post-assembly trimming in factory calibration of medical patient monitors and handheld multimeters. |
| 10mA bidirectional drive | Directly powers 12-bit DAC reference inputs and op-amp bias networks without external buffers, reducing BOM count and layout area. |
Applications
| High-Accuracy Industrial Process Control | Precision Instrumentation |
|---|---|
Use Scenario: 4–20mA loop-powered pressure transmitter with HART modulation in oil & gas refineries. IC Role / Device Role / Timing Role: Provides stable 1.25V reference for DAC-driven current output stage and ADC monitoring of sensor bridge. Use Value: 6ppm/°C drift ensures <0.1% full-scale error over ambient temperature swings, meeting ISA-S84 SIL-2 requirements. | Use Scenario: Portable handheld digital multimeter with 6½-digit resolution and auto-ranging. IC Role / Device Role / Timing Role: Supplies reference voltage to dual-slope integrator and auto-zero amplifier during measurement cycles. Use Value: 4.8µVP-P low-frequency noise prevents digit flicker in DC voltage readings, enabling stable 100nV resolution. |
| High-Resolution ADCs and DACs | Precision Current Sources |
Use Scenario: 24-bit delta-sigma ADC in seismic data acquisition node deployed in remote field locations. IC Role / Device Role / Timing Role: Reference source for ADC's internal PGA and external programmable gain amplifier stages. Use Value: Dual ground (GNDF/GNDS) separation reduces ground-loop noise coupling, preserving ENOB >21 bits at 10SPS. | Use Scenario: Programmable LED driver for machine vision lighting with intensity stability <±0.5% over temperature. IC Role / Device Role / Timing Role: Sets precise current mirror ratio via matched resistor network referenced to 1.25V. Use Value: ±0.04% initial accuracy eliminates per-unit calibration, reducing manufacturing test time by 30%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6071AUT12+T | No FILTER pin; higher 10Hz–10kHz thermal noise (7µVRMS vs. 5µVRMS with CFILTER) | Lacks wideband noise filtering - unsuitable for FFT-based signal analyzers but sufficient for DC-coupled sensors | Select when cost sensitivity outweighs need for sub-10Hz noise performance and no external filter cap is desired. |
| ADR3412ARJZ-R7 | Higher 10ppm/°C max drift; no enable/shutdown; 5-pin SOT23 package | Not AEC-Q100 qualified; lacks force/sense outputs - limited to low-precision, non-automotive applications | Choose for cost-sensitive consumer test gear where ±0.1% accuracy and -40°C to +105°C range suffice. |
Compared with MAX6071AUT12+T and ADR3412ARJZ-R7, the MAX6070AAUT12+T uniquely combines AEC-Q100 qualification, Kelvin force/sense architecture, and user-configurable noise filtering - making it the only option for automotive-grade, high-dynamic-range sensor signal chains requiring <5µVRMS broadband noise.
Availability
MAX6070AAUT12+T is available at Aetrix Electronics and suitable for high-accuracy industrial process control, precision instrumentation, and automotive sensor biasing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6070AAUT12+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX6070/MAX6071 family was engineered specifically for ultra-low-noise, low-drift voltage references in harsh-environment measurement systems - emphasizing Kelvin sensing, wideband noise suppression, and AEC-Q100 compliance for next-generation automotive and industrial IoT nodes.
FAQ
What is the output voltage tolerance of the MAX6070AAUT12+T at room temperature?
The MAX6070AAUT12+T has an output voltage of 1.250V with ±0.04% initial accuracy at +25°C, corresponding to a tolerance band of ±0.5mV. This specification is guaranteed for the A-grade version and is measured under standard conditions (VIN = 5.0V, IOUT = 0mA, COUT = 0.1µF). The MAX6070AAUT12+T maintains this tight tolerance without requiring post-manufacturing calibration.
Does the MAX6070AAUT12+T support Kelvin (4-wire) sensing, and how is it implemented?
Yes, the MAX6070AAUT12+T supports true Kelvin sensing via dedicated OUTF (force) and OUTS (sense) pins. OUTF delivers the regulated 1.25V to the load, while OUTS provides a high-impedance feedback node connected directly to the load's ground point. Shorting OUTF to OUTS near the load cancels trace resistance voltage drops - a design feature confirmed in the MAX6070AAUT12+T pin configuration diagram and electrical characteristics table.
What is the purpose of the FILTER pin on the MAX6070AAUT12+T, and what capacitor value is recommended?
The FILTER pin on the MAX6070AAUT12+T accepts an external 0.1µF capacitor to ground to reduce high-frequency thermal noise (10Hz–10kHz) by up to 50%, achieving 3µVRMS versus 6µVRMS without filtering. This feature is exclusive to the MAX6070 series and is documented in the "Electrical Characteristics" table for MAX6070AUT12 under "MAX6070 thermal noise, 10Hz to 10kHz, COUT = 0.1µF, CFILTER = 0.1µF".
Is the MAX6070AAUT12+T qualified for automotive applications, and what standard does it meet?
Yes, the MAX6070AAUT12+T is AEC-Q100 qualified per Grade 1 (−40°C to +125°C), as explicitly stated in the "Benefits and Features" section and "Ordering Information" of the datasheet. This qualification covers stress tests including HTOL, TCT, and ESD, confirming suitability for engine control units, battery management systems, and ADAS sensor modules where reliability under thermal cycling and vibration is mandatory.
How does the MAX6070AAUT12+T handle load regulation, and what is its maximum sourcing/sinking capability?
The MAX6070AAUT12+T regulates output voltage within 150µV/mA (sink) and 150µV/mA (source) over 0–10mA load current, as specified in the "Load Regulation" parameter. It can source or sink up to ±10mA continuously - verified in the "Output Current" row of the Electrical Characteristics table - enabling direct drive of ADC reference inputs, op-amp bias networks, and small-signal transducers without external buffers.
MAX6070AAUT12+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SOT-23-6
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.04%
- Temperature Coefficient:
- 6ppm/°C
- Noise - 0.1Hz to 10Hz:
- 3.6µVp-p
- Noise - 10Hz to 10kHz:
- 2.5µVrms
- Voltage - Input:
- 2.7V ~ 5.5V
- Current - Supply:
- 260µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6070AAUT12+T FAQ
1.How can I place an order for MAX6070AAUT12+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6070AAUT12+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 MAX6070AAUT12+T reliable?
The price and inventory of MAX6070AAUT12+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6070AAUT12+T is usually 5 days.
3.What payment methods are accepted for MAX6070AAUT12+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6070AAUT12+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6070AAUT12+T?
MAX6070AAUT12+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6070AAUT12+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 MAX6070AAUT12+T?
For technical support, including MAX6070AAUT12+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6070AAUT12+T requirements.
6.How does Aetrix verify that MAX6070AAUT12+T is sourced from the original manufacturer or authorized distributors?
All MAX6070AAUT12+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 MAX6070AAUT12+T meets industry standards.
7.What is the process for return or replacement of MAX6070AAUT12+T?
All MAX6070AAUT12+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6070AAUT12+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 MAX6070AAUT12+T part is unused and in its original packaging.
Return procedure for MAX6070AAUT12+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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