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Analog Devices Inc./Maxim Integrated MAX6071AAUT12+T
- Part No.:
- MAX6071AAUT12+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
MAX6071AAUT12+T.pdf
- Description:
- IC VREF SERIES 0.04% SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:5,810
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Product details
Overview
MAX6071AAUT12+T from Analog Devices is a precision 1.25V low-noise, low-drift series voltage reference in a 6-pin SOT23 package. It delivers ±0.04% initial accuracy, 6ppm/°C max temperature drift (A grade), and 4.8µVP-P 1/f noise (0.1Hz–10Hz) at 1.25V output, enabling high-accuracy ADC/DAC biasing in industrial sensor signal chains.
For engineers reviewing the MAX6071AAUT12+T datasheet, MAX6071AAUT12+T pinout, MAX6071AAUT12+T application, or MAX6071AAUT12+T equivalent, key selection criteria include its 150µA quiescent current, 10mA sink/source capability, 2.7V to 5.5V input range, and AEC-Q100 qualification for automotive-grade stability.
Technical Context
The MAX6071AAUT12+T implements a bandgap-based series voltage reference architecture with separate force (OUTF) and sense (OUTS) outputs, enabling Kelvin sensing to reject PCB trace resistance errors. Its dual-ground structure (GNDF/GNDS) isolates filter and load return paths to minimize noise coupling.
Unlike the MAX6070, the MAX6071 omits the FILTER pin and associated internal RC network-eliminating external capacitor dependency while retaining low 10Hz–10kHz thermal noise (6µVRMS) and 84dB 60Hz ripple rejection. Enable settling time is 63µs (typ) with 0.01% accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.250V ±0.04% at +25°C - matches standard DAC/ADC reference rails and enables direct replacement of legacy 1.25V references without resistor scaling. |
| Temp Drift (max) | 6ppm/°C (A grade) - ensures ≤75ppm total drift over –40°C to +125°C, critical for uncalibrated industrial instrumentation. |
| 1/f Noise | 4.8µVP-P (0.1Hz–10Hz) - supports 20-bit+ resolution in precision data acquisition where low-frequency noise dominates error budget. |
| Supply Current | 150µA (typ) at +25°C - allows battery-powered portable instruments to achieve >10-year shelf life with minimal standby power impact. |
| Load Drive | ±10mA - directly powers op-amp buffers or small analog front-ends without external gain stages, reducing BOM count. |
| Dropout Voltage | 110mV (max at 10mA, –40°C to +125°C) - enables operation from low-headroom supplies like 1.35V Li-ion cells or 1.8V LDO outputs. |
| Ripple Rejection | 84dB at 60Hz - suppresses AC mains coupling in factory-floor PLC modules and eliminates need for additional LC filtering. |
Pinout & Package
Package: 6-pin SOT23 (U6+5/U6+5A), 2.9mm × 1.6mm footprint, JEDEC MS-012 compliant, RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GNDF | Ground Force | Return path for internal reference core; must be connected to clean system ground near IC body to minimize PSRR degradation. |
| 2 - GNDS | Ground Sense | Return for load-side sensing; ties to ground at load point to cancel IR drop in PCB traces between reference and converter. |
| 3 - EN | Enable Input | CMOS-compatible control: VIH ≥ 0.7×VIN enables output; VIL ≤ 0.3×VIN disables, reducing supply current to 6µA. |
| 4 - IN | Supply Input | Accepts 2.7V–5.5V; requires local 0.1µF ceramic bypass to GNDF within 2mm to maintain stability under dynamic load. |
| 5 - OUTS | Output Sense | High-impedance Kelvin sense node; connects directly to ADC REF+ or op-amp non-inverting input for precision feedback. |
| 6 - OUTF | Output Force | Low-impedance drive node; bypassed with 0.1µF–10µF capacitor to GNDF to suppress high-frequency noise and ensure capacitive-load stability. |
Key Features
| Feature | Design Value |
|---|---|
| Kelvin Output Architecture | Separate OUTF (force) and OUTS (sense) pins eliminate voltage error from PCB trace resistance up to 100mΩ, preserving accuracy in high-current or long-trace layouts. |
| AEC-Q100 Qualified | Rated for automotive applications (Grade 1: –40°C to +125°C), including engine control units and ADAS sensor interfaces requiring extended temperature reliability. |
| No External Filter Required | Omits MAX6070's FILTER pin and external capacitor, simplifying layout and eliminating capacitor aging/tolerance risks in mission-critical systems. |
| Low Dropout Operation | 110mV max dropout at 10mA enables use with ultra-low-voltage supplies (e.g., 1.35V coin cells), extending battery life in portable test equipment. |
| Stable with Ceramic Capacitors | Guaranteed stable with 0.1µF–10µF ceramic output caps-no ESR requirements-reducing cost and board space vs. tantalum or electrolytic alternatives. |
Applications
| High-Resolution Data Acquisition | Precision Current Sources |
|---|---|
Use Scenario: 24-bit delta-sigma ADC in weigh-scale transducer interface operating from 3.3V rail with ±0.01% linearity requirement. IC Role / Device Role / Timing Role: Primary voltage reference for ADC REF+ input, providing stable 1.25V基准 with sub-ppm thermal drift to minimize gain error over temperature. Use Value: 4.8µVP-P 1/f noise ensures <0.5 LSB noise contribution at 24-bit resolution, eliminating need for digital averaging or oversampling. | Use Scenario: Programmable 4–20mA loop transmitter in hazardous-area process controllers requiring 0.1% full-scale accuracy. IC Role / Device Role / Timing Role: Reference for DAC-controlled current mirror; OUTF/OUTS configuration rejects PCB trace resistance in 2-wire loop wiring. Use Value: ±0.04% initial accuracy and 6ppm/°C drift enable calibration-free operation across –40°C to +85°C ambient, reducing field service costs. |
| Automotive Sensor Signal Conditioning | Portable Battery-Powered Instruments |
Use Scenario: Pressure sensor module in brake-by-wire system, exposed to under-hood temperatures up to +125°C. IC Role / Device Role / Timing Role: Stable 1.25V reference for ratiometric bridge excitation and ADC conversion, maintaining accuracy despite wide thermal cycling. Use Value: AEC-Q100 Grade 1 qualification and 85ppm thermal hysteresis ensure repeatable measurements after repeated hot/cold cycles, meeting ISO 26262 ASIL-B requirements. | Use Scenario: Handheld multimeter powered by two AAA alkaline cells (1.8V–3.2V), requiring 200-hour runtime with 4½-digit display. IC Role / Device Role / Timing Role: Low-power reference for auto-ranging ADC, enabled only during measurement to conserve energy. Use Value: 150µA quiescent current and 6µA shutdown mode extend battery life by >3× vs. legacy references, while 110mV dropout permits operation down to 1.35V cell voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3412RTER | 1.2V output, 3ppm/°C max drift, 2.5µVP-P noise, but only ±100µA load capability and no Kelvin outputs. | Suitable for low-power, low-current applications (e.g., IoT sensor nodes) where trace resistance is negligible. | Select REF3412RTER when ultra-low noise and minimal drift outweigh need for high load drive or Kelvin sensing. |
| ADR4512BRTZ-REEL7 | 1.2V output, 3ppm/°C max drift, 1.8µVP-P noise, SOIC-8 package, higher 4.5mA quiescent current. | Better for lab-grade instrumentation where size is secondary to ultimate noise performance and long-term stability (15ppm/1000h). | Select ADR4512BRTZ-REEL7 when board space permits larger package and lowest possible noise is mandatory for metrology-grade systems. |
Compared with REF3412RTER and ADR4512BRTZ-REEL7, the MAX6071AAUT12+T uniquely balances Kelvin sensing, 10mA drive, and automotive qualification in a compact SOT23-making it optimal for space-constrained, high-reliability industrial and automotive signal chains where trace resistance and thermal stability cannot be compromised.
Availability
MAX6071AAUT12+T is available at Aetrix Electronics and suitable for high-accuracy industrial and process control, precision instrumentation, and automotive sensor modules requiring stable component supply across extended temperature ranges.
Supply support for MAX6071AAUT12+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.
The MAX6071AAUT12+T belongs to the MAX6070/MAX6071 low-noise, high-precision series voltage reference product line, designed specifically for applications demanding sub-ppm-level stability, ultra-low 1/f noise, and robust operation in harsh thermal environments.
FAQ
What is the maximum load current the MAX6071AAUT12+T can source or sink?
The MAX6071AAUT12+T can source and sink up to ±10mA across the full –40°C to +125°C temperature range. This capability allows it to directly drive ADC reference inputs, op-amp bias networks, or small current mirrors without external buffering-reducing design complexity and improving system accuracy by avoiding gain-stage errors. The device maintains regulation within specification even at full ±10mA load.
Does the MAX6071AAUT12+T require an external filter capacitor like the MAX6070?
No, the MAX6071AAUT12+T does not require an external filter capacitor because it lacks the FILTER pin present on the MAX6070. Its internal architecture is optimized for low broadband noise (6µVRMS, 10Hz–10kHz) without external components, simplifying layout and eliminating capacitor-related aging, tolerance, and ESR dependencies. This makes the MAX6071AAUT12+T ideal for designs prioritizing reliability and minimal bill-of-materials.
How does the Kelvin output configuration (OUTF/OUTS) improve accuracy in the MAX6071AAUT12+T?
The MAX6071AAUT12+T uses separate OUTF (force) and OUTS (sense) pins to implement a 4-wire Kelvin connection. OUTF delivers current to the load, while OUTS senses voltage directly at the load point-rejecting voltage drop across PCB traces or connectors. This configuration compensates for up to 100mΩ of series resistance, preserving the ±0.04% initial accuracy and 6ppm/°C drift spec even in high-current or mechanically stressed layouts where trace resistance would otherwise degrade performance.
Is the MAX6071AAUT12+T qualified for automotive applications?
Yes, the MAX6071AAUT12+T is AEC-Q100 qualified (Grade 1: –40°C to +125°C), making it suitable for automotive applications including engine control units, ADAS sensors, and battery management systems. Its guaranteed performance over this extended temperature range, combined with low thermal hysteresis (85ppm) and long-term stability (40ppm/1000h), meets functional safety requirements for ASIL-B systems where reference integrity directly impacts control loop accuracy and diagnostic coverage.
What is the minimum input voltage required for the MAX6071AAUT12+T to maintain regulation at full load?
The MAX6071AAUT12+T requires a minimum input voltage of 1.36V (1.25V + 110mV dropout) to maintain regulation at 10mA load and –40°C to +125°C. At typical conditions (+25°C, 10mA), dropout is lower (80mV typ), allowing operation from as low as 1.33V. This ultra-low dropout enables compatibility with single-cell lithium batteries (1.8V–3.2V), low-noise LDOs, and energy-harvesting sources-extending operational range beyond conventional 1.5V or 1.8V system rails.
MAX6071AAUT12+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:
- 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
MAX6071AAUT12+T FAQ
1.How can I place an order for MAX6071AAUT12+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6071AAUT12+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 MAX6071AAUT12+T reliable?
The price and inventory of MAX6071AAUT12+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6071AAUT12+T is usually 5 days.
3.What payment methods are accepted for MAX6071AAUT12+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6071AAUT12+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6071AAUT12+T?
MAX6071AAUT12+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6071AAUT12+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 MAX6071AAUT12+T?
For technical support, including MAX6071AAUT12+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6071AAUT12+T requirements.
6.How does Aetrix verify that MAX6071AAUT12+T is sourced from the original manufacturer or authorized distributors?
All MAX6071AAUT12+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 MAX6071AAUT12+T meets industry standards.
7.What is the process for return or replacement of MAX6071AAUT12+T?
All MAX6071AAUT12+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6071AAUT12+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 MAX6071AAUT12+T part is unused and in its original packaging.
Return procedure for MAX6071AAUT12+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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