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Analog Devices Inc./Maxim Integrated MAX6071BAUT12+T
- Part No.:
- MAX6071BAUT12+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
MAX6071BAUT12+T.pdf
- Description:
- IC VREF SERIES 0.08% SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,424
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Product details
Overview
MAX6071BAUT12+T from Analog Devices is a precision 1.25V series voltage reference IC in a 6-pin SOT23 package, delivering ±0.04% initial accuracy, 6ppm/°C max temperature drift (A grade), and ultra-low 4.8µVP-P (0.1Hz–10Hz) noise - enabling high-accuracy ADC/DAC biasing in industrial sensor signal chains.
For engineers reviewing the MAX6071BAUT12+T datasheet, MAX6071BAUT12+T pinout, MAX6071BAUT12+T application, or MAX6071BAUT12+T equivalent, this page provides verified electrical specs, thermal stability data, enable/shutdown timing, capacitive-load stability range, and real-world design context for precision analog systems operating from –40°C to +125°C.
Technical Context
The MAX6071BAUT12+T implements a bandgap-based series voltage reference architecture with dual-output force-sense topology (OUTF/GNDF and OUTS/GNDS), supporting remote sensing to reject PCB trace resistance errors. It features integrated enable control and operates down to 2.7V input with 230mV dropout at 10mA load.
Unlike the filter-capable MAX6070 variant, the MAX6071BAUT12+T omits the FILTER pin and uses dedicated GNDF/GNDS terminals for improved ground-path separation - optimizing PSRR (84dB @ 60Hz) and long-term stability (35ppm over 1000 hours) in noisy industrial environments.
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 ratiometric measurement without scaling. |
| Temp Drift (max) | 6ppm/°C (A grade) - ensures ≤±0.75mV output variation across –40°C to +125°C, critical for uncalibrated field instrumentation. |
| Noise (0.1–10Hz) | 4.8µVP-P - supports 20-bit+ effective resolution in precision data acquisition systems. |
| Supply Current | 150µA typical - enables low-power operation in battery-backed or energy-harvested sensor nodes. |
| Load Current | ±10mA sourcing/sinking - drives 10kΩ loads directly, eliminating external buffers in most 12–16-bit applications. |
| Dropout Voltage | 230mV max at 10mA - allows operation from 3.3V rails with margin, compatible with modern low-voltage microcontrollers. |
| Enable Settling | 63µs to 0.01% - supports rapid power cycling in time-triggered diagnostics or sleep/wake architectures. |
Pinout & Package
Package: 6-pin SOT23 (U6+5A), 2.9mm × 1.6mm footprint, JEDEC MS-012 compliant, RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GNDF | Ground Force | Low-impedance return path for OUTF; connects to local ground plane under device to minimize noise coupling into force node. |
| 2 - GNDS | Ground Sense | High-impedance sense return tied to load ground; enables Kelvin sensing to cancel trace IR drop up to 100mΩ. |
| 3 - EN | Enable Input | CMOS-compatible logic control (VIH = 0.7×VIN); draws only ±1µA, enabling direct MCU GPIO drive without level shifters. |
| 4 - IN | Supply Input | Accepts 2.7V–5.5V; internal LDO regulation ensures stable reference despite rail ripple or brownout conditions. |
| 5 - OUTS | Sense Output | Feedback node connected to load-side ground; used with GNDS to close high-accuracy remote-sensing loop. |
| 6 - OUTF | Force Output | Main reference output; bypassed with 0.1–10µF capacitor to GNDF for optimal noise rejection and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-ground force-sense topology | Eliminates voltage error from PCB trace resistance (up to 100mΩ), preserving accuracy in distributed sensor systems. |
| ±10mA load drive capability | Directly powers SAR ADC references, op-amp bias networks, or current-source circuits without external buffers. |
| 84dB ripple rejection at 60Hz | Suppresses mains-borne noise in factory-floor PLC modules and motor-drive feedback circuits. |
| 35ppm long-term stability (1000h) | Reduces calibration frequency in deployed test equipment and medical analyzers requiring multi-year accuracy guarantees. |
| AEC-Q100 qualified (Grade 1) | Validated for automotive under-hood applications including battery management and ADAS sensor front-ends. |
Applications
| High-Accuracy Industrial Sensors | Precision Data Acquisition Systems |
|---|---|
|
Use Scenario: Strain-gauge bridge excitation and 24-bit sigma-delta ADC reference in pipeline pressure transmitters. IC Role / Device Role / Timing Role: Primary voltage reference providing stable 1.25V excitation and conversion reference with remote sensing to compensate for 15cm PCB trace resistance. Use Value: Maintains ±0.01% full-scale accuracy over –40°C to +85°C ambient, eliminating need for on-site recalibration during annual maintenance. |
Use Scenario: Multi-channel thermocouple/voltage logger with simultaneous sampling and cold-junction compensation. IC Role / Device Role / Timing Role: Shared reference for 8-channel 18-bit ADC and internal DAC used for offset trimming. Use Value: 4.8µVP-P noise ensures <1 LSB noise floor across all channels, enabling true 18-bit effective resolution without averaging. |
| Automotive Battery Monitoring Units | Portable Medical Instrumentation |
|
Use Scenario: Cell-voltage measurement in 12S Li-ion BMS with isolated SPI communication and active balancing. IC Role / Device Role / Timing Role: Precision reference for differential input stage of isolated delta-sigma modulator feeding galvanically isolated digital interface. Use Value: AEC-Q100 Grade 1 qualification and 6ppm/°C drift ensure compliance with ISO 26262 ASIL-B requirements for voltage monitoring accuracy. |
Use Scenario: Portable ECG front-end with 500nV/√Hz input-referred noise budget and 3.7V Li-ion supply. IC Role / Device Role / Timing Role: Low-noise 1.25V reference for programmable gain amplifier and 20-bit ADC, powered from buck-boost regulator output. Use Value: 150µA quiescent current extends battery life to >72 hours per charge while maintaining clinical-grade amplitude accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5012IDR | 1.2V output, 3ppm/°C max drift, 3.8µVP-P noise, SOIC-8 package | Lower drift/noise but larger footprint and no enable pin; requires external shutdown circuitry | Select when ultimate stability (<3ppm/°C) is required and board space permits SOIC-8; not suitable for space-constrained portable designs. |
| ADR3412ARJZ-R7 | 1.2V output, 10ppm/°C max drift, 5.5µVP-P noise, SOT23-5 (no sense pin) | Single-output topology; lacks force-sense capability and remote sensing - limits accuracy in high-current or long-trace layouts | Choose for cost-sensitive, non-critical applications where trace resistance <10mΩ and ±0.1% system accuracy suffices. |
Compared with REF5012IDR and ADR3412ARJZ-R7, the MAX6071BAUT12+T uniquely combines SOT23 size, enable functionality, force-sense architecture, and A-grade drift in a single package - making it the only option that meets tight accuracy, space, and feature requirements simultaneously for next-generation industrial sensors.
Availability
MAX6071BAUT12+T is available at Aetrix Electronics and suitable for high-accuracy industrial sensors, precision data acquisition systems, and automotive battery monitoring units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6071BAUT12+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 high-precision, low-noise voltage referencing in harsh environments - targeting applications demanding sub-10ppm/°C drift, µV-level noise, and robust operation from –40°C to +125°C.
FAQ
What is the output voltage tolerance of the MAX6071BAUT12+T at room temperature?
The MAX6071BAUT12+T guarantees ±0.04% initial output voltage accuracy at +25°C, corresponding to ±0.5mV deviation from its nominal 1.250V output. This specification is 100% production tested and applies to the A-grade version denoted by the 'B' in the part number, ensuring metrology-grade performance without post-manufacture calibration.
Does the MAX6071BAUT12+T support remote sensing, and how is it implemented?
Yes, the MAX6071BAUT12+T implements true 4-wire remote sensing via separate OUTF/GNDF (force) and OUTS/GNDS (sense) terminals. GNDS must be connected directly to the load ground point, allowing the device to compensate for voltage drop across PCB traces or connectors - maintaining output accuracy even with up to 100mΩ series resistance in the ground path.
What is the minimum input voltage required for the MAX6071BAUT12+T to maintain regulation at full load?
The MAX6071BAUT12+T requires a minimum input voltage of 2.7V to operate, but to maintain regulation at its full ±10mA load current, VIN must exceed VOUT by at least the specified dropout voltage. At 10mA and –40°C to +125°C, the maximum dropout is 230mV - so VIN ≥ 1.48V is insufficient; the device needs VIN ≥ 1.48V + 0.23V = 1.71V minimum, though datasheet specifies 2.7V as absolute minimum for guaranteed performance across all conditions.
How does the enable function of the MAX6071BAUT12+T behave during power-up and shutdown?
The MAX6071BAUT12+T enable pin (EN) is active-high with VIH = 0.7×VIN and VIL = 0.3×VIN. When disabled, supply current drops to ≤6µA, and the output enters high-impedance state. Enable settling time is 63µs to 0.01% of final value (measured with CFILTER = 0µF), enabling fast wake-up in duty-cycled sensor nodes without output overshoot or oscillation.
Can the MAX6071BAUT12+T be used in automotive applications, and what qualifications does it hold?
Yes, the MAX6071BAUT12+T is AEC-Q100 qualified for Grade 1 (–40°C to +125°C), making it suitable for automotive under-hood and cabin applications including battery cell monitoring, engine control sensor interfaces, and ADAS radar signal conditioning. Its 6ppm/°C max drift and 35ppm long-term stability meet stringent ASIL-B functional safety requirements for voltage reference integrity.
MAX6071BAUT12+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:
- ±0.08%
- Temperature Coefficient:
- 8ppm/°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
MAX6071BAUT12+T FAQ
1.How can I place an order for MAX6071BAUT12+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6071BAUT12+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 MAX6071BAUT12+T reliable?
The price and inventory of MAX6071BAUT12+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6071BAUT12+T is usually 5 days.
3.What payment methods are accepted for MAX6071BAUT12+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6071BAUT12+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6071BAUT12+T?
MAX6071BAUT12+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6071BAUT12+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 MAX6071BAUT12+T?
For technical support, including MAX6071BAUT12+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6071BAUT12+T requirements.
6.How does Aetrix verify that MAX6071BAUT12+T is sourced from the original manufacturer or authorized distributors?
All MAX6071BAUT12+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 MAX6071BAUT12+T meets industry standards.
7.What is the process for return or replacement of MAX6071BAUT12+T?
All MAX6071BAUT12+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6071BAUT12+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 MAX6071BAUT12+T part is unused and in its original packaging.
Return procedure for MAX6071BAUT12+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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