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Analog Devices Inc./Maxim Integrated MAX6071BAUT21+T
- Part No.:
- MAX6071BAUT21+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
MAX6071BAUT21+T.pdf
- Description:
- IC VREF SERIES 0.08% SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:10,152
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Product details
Overview
MAX6071BAUT21+T from Analog Devices is a precision 2.048V bandgap 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-resolution ADC/DAC biasing in industrial process control systems.
For engineers reviewing the MAX6071BAUT21+T datasheet, MAX6071BAUT21+T pinout, MAX6071BAUT21+T application, or MAX6071BAUT21+T equivalent, this device supports low-power, high-stability analog signal chains requiring tight DC accuracy, sub-10µV noise, and operation across –40°C to +125°C with 10mA sourcing/sinking capability.
Technical Context
The MAX6071BAUT21+T implements a force-sense architecture with separate OUTF (force) and OUTS (sense) outputs, enabling Kelvin sensing to eliminate PCB trace resistance errors. It uses a proprietary low-noise bandgap core with integrated thermal compensation.
Unlike the MAX6070, it omits the FILTER pin and associated noise-reduction capacitor option, simplifying layout while retaining full 10mA load drive, 230mV max dropout at 10mA, and 84dB 60Hz ripple rejection-optimized for stable, low-drift reference generation without external filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048V - Matches common 12-bit DAC/ADC full-scale codes for zero-gain error calibration. |
| Initial Accuracy | ±0.04% - Ensures ≤0.82mV absolute error at 25°C, critical for <12-bit system linearity. |
| Temp Drift (max) | 6ppm/°C - Adds ≤0.25mV error over –40°C to +125°C, supporting wide-temperature industrial operation. |
| 1/f Noise (0.1–10Hz) | 4.8µVP-P - Enables <16-bit effective resolution in precision data acquisition front-ends. |
| Supply Current | 150µA typical - Allows battery-powered or energy-constrained designs with minimal quiescent overhead. |
| Load Drive | ±10mA - Supports direct driving of ADC reference inputs, op-amp bias networks, or small DACs without buffering. |
| Dropout Voltage | 230mV max at 10mA - Permits operation from 2.278V supply, compatible with 2.5V/2.7V rails and LDO outputs. |
Pinout & Package
Package: 6-pin SOT23 (U6+5/U6+5A), 2.9mm × 1.6mm footprint, RoHS-compliant, rated for –40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GNDF | Ground Force | Low-impedance ground return for internal reference core; must connect to clean system ground plane. |
| 2 - GNDS | Ground Sense | Sense point for feedback loop; connects to load-side ground to reject trace IR drop. |
| 3 - EN | Enable Control | Active-high digital input; drives high (>0.7×VIN) to activate output, low (<0.3×VIN) for 6µA shutdown. |
| 4 - IN | Supply Input | Input rail (2.8V–5.5V); requires local 0.1µF bypass to GNDF near pin. |
| 5 - OUTS | Voltage Sense Output | Feedback node connected directly to load ground; used with OUTF for 4-wire Kelvin regulation. |
| 6 - OUTF | Voltage Force Output | Main reference output; bypass with 0.1–10µF capacitor to GNDF for stability and noise reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Force-Sense Output Architecture | Separate OUTF/OUTS pins enable true 4-wire Kelvin connection, eliminating up to 50mΩ PCB trace error impact on reference accuracy. |
| AEC-Q100 Qualified | Qualified per AEC-Q100 Rev G Grade 1 (–40°C to +125°C), supporting automotive sensor modules and ADAS subsystems. |
| Ultra-Low 1/f Noise | 4.8µVP-P (0.1–10Hz) enables <16-bit effective resolution in slow-sampling applications like weigh scales and environmental sensors. |
| High Ripple Rejection | 84dB at 60Hz suppresses power supply coupling, allowing direct use with noisy switchers or unregulated wall adapters. |
| Fast Enable Settling | 75µs to 0.01% ensures rapid power-up in duty-cycled systems (e.g., portable test equipment, IoT edge nodes). |
Applications
| Industrial Process Transmitters | Precision Weigh Scales |
|---|---|
Use Scenario: 4–20mA loop-powered pressure/temperature transmitter operating in harsh factory environments. IC Role / Device Role / Timing Role: Primary voltage reference for 16-bit SAR ADC and DAC used in sensor linearization and output current generation. Use Value: ±0.04% accuracy and 6ppm/°C drift ensure <0.1% total error over temperature, meeting IEC 61293 Class 0.1 requirements. |
Use Scenario: Battery-powered benchtop scale with 100,000-count resolution and auto-zero function. IC Role / Device Role / Timing Role: Low-noise reference for 24-bit delta-sigma ADC front-end, directly driving modulator reference input. Use Value: 4.8µVP-P 1/f noise limits quantization uncertainty to <1 LSB, enabling true 20-bit effective resolution. |
| Automotive Cabin Sensors | Portable Medical Instrumentation |
Use Scenario: Occupant detection system using capacitive sensing and microcontroller-based signal processing. IC Role / Device Role / Timing Role: Stable 2.048V reference for MCU's internal 12-bit ADC measuring sensor capacitance changes. Use Value: AEC-Q100 qualification and –40°C to +125°C operation guarantee reliability in under-hood and cabin thermal cycling. |
Use Scenario: Handheld ECG monitor with analog front-end amplifying µV-level cardiac signals. IC Role / Device Role / Timing Role: Reference source for programmable gain amplifier (PGA) and anti-aliasing filter biasing. Use Value: 150µA supply current extends battery life; 10mA drive supports multi-channel PGA bias without external buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5020IDR | 2.048V, 3ppm/°C max drift, 3.8µVP-P noise, SO-8 package, no enable pin | Higher accuracy but larger footprint and no shutdown; better for lab-grade instruments, not portable designs | Select when ultimate drift performance is required and board space allows SO-8; avoid where enable control or SOT23 size is mandatory. |
| ADR4520BRZ | 2.048V, 3ppm/°C max drift, 5.5µVP-P noise, SO-8, 1.2mA supply current | Lower noise floor than MAX6071 but 8× higher quiescent current; unsuitable for battery operation | Choose for mains-powered precision instrumentation needing lowest possible drift; reject for energy-constrained or thermally sensitive layouts. |
Compared with REF5020IDR and ADR4520BRZ, the MAX6071BAUT21+T uniquely balances ultra-low noise (4.8µVP-P), micropower operation (150µA), integrated enable, and compact SOT23 packaging-making it optimal for space- and power-constrained industrial and automotive embedded systems requiring AEC-Q100 compliance.
Availability
MAX6071BAUT21+T is available at Aetrix Electronics and suitable for high-accuracy industrial process control, precision instrumentation, and automotive cabin sensor applications requiring stable component supply across extended temperature ranges.
Supply support for MAX6071BAUT21+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 series was designed specifically for high-precision, low-noise voltage reference needs in space-constrained, wide-temperature industrial and automotive systems-emphasizing force-sense accuracy, micropower operation, and AEC-Q100 qualification.
FAQ
What is the output voltage tolerance of the MAX6071BAUT21+T at room temperature?
The MAX6071BAUT21+T has an initial output voltage accuracy of ±0.04% at +25°C, meaning its 2.048V nominal output falls within 2.0472V to 2.0488V under standard test conditions. This specification is 100% production tested and applies only to the 'A' grade variant denoted by the 'B' in the part number.
Does the MAX6071BAUT21+T support Kelvin (4-wire) connection, and how is it implemented?
Yes, the MAX6071BAUT21+T supports Kelvin connection via dedicated OUTF (pin 6) and OUTS (pin 5) terminals. OUTF delivers the regulated voltage to the load, while OUTS provides the feedback path to the internal error amplifier-allowing remote sensing at the load to cancel voltage drop across PCB traces or connectors.
What is the minimum supply voltage required for the MAX6071BAUT21+T to maintain regulation at full load?
The MAX6071BAUT21+T requires a minimum supply voltage of 2.8V to maintain regulation at 25°C. At –40°C to +125°C and 10mA load, the maximum dropout is 230mV, so VIN must be ≥2.278V. However, the guaranteed operating range starts at 2.8V per datasheet specifications.
How does the enable functionality of the MAX6071BAUT21+T work, and what is its shutdown current?
The MAX6071BAUT21+T features an active-high EN pin (pin 3). Driving it below 0.3×VIN disables the output and reduces supply current to ≤6µA. The enable settling time is 75µs to 0.01% when transitioning from shutdown to active mode with COUT = 0.1µF.
Is the MAX6071BAUT21+T qualified for automotive applications, and what standard does it meet?
Yes, the MAX6071BAUT21+T is AEC-Q100 qualified (Grade 1), certified for operation from –40°C to +125°C ambient temperature. This qualification covers stress testing for temperature cycling, humidity, ESD, and other automotive reliability requirements-making it suitable for cabin sensors, body control modules, and non-safety-critical ADAS subsystems.
MAX6071BAUT21+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):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.08%
- Temperature Coefficient:
- 8ppm/°C
- Noise - 0.1Hz to 10Hz:
- 6.4µVp-p
- Noise - 10Hz to 10kHz:
- 8.6µVrms
- 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
MAX6071BAUT21+T FAQ
1.How can I place an order for MAX6071BAUT21+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6071BAUT21+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 MAX6071BAUT21+T reliable?
The price and inventory of MAX6071BAUT21+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6071BAUT21+T is usually 5 days.
3.What payment methods are accepted for MAX6071BAUT21+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6071BAUT21+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6071BAUT21+T?
MAX6071BAUT21+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6071BAUT21+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 MAX6071BAUT21+T?
For technical support, including MAX6071BAUT21+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6071BAUT21+T requirements.
6.How does Aetrix verify that MAX6071BAUT21+T is sourced from the original manufacturer or authorized distributors?
All MAX6071BAUT21+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 MAX6071BAUT21+T meets industry standards.
7.What is the process for return or replacement of MAX6071BAUT21+T?
All MAX6071BAUT21+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6071BAUT21+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 MAX6071BAUT21+T part is unused and in its original packaging.
Return procedure for MAX6071BAUT21+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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