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Analog Devices Inc./Maxim Integrated MAX6071BAUT18+T
- Part No.:
- MAX6071BAUT18+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
MAX6071BAUT18+T.pdf
- Description:
- IC VREF SERIES 0.08% SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,190
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Product details
Overview
MAX6071BAUT18+T from Analog Devices is a precision 1.8V 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 6.4µVP-P 1/f noise (0.1Hz–10Hz) at 1.8V output. It sources/sinks ±10mA, operates from 2.7V to 5.5V input, and supports high-accuracy industrial sensor signal conditioning and 16-bit ADC biasing.
For engineers reviewing the MAX6071BAUT18+T datasheet, MAX6071BAUT18+T pinout, MAX6071BAUT18+T application, or MAX6071BAUT18+T equivalent, this page provides verified circuit role, validated pin functions, real-world load regulation (135–225 µV/mA), thermal hysteresis (85 ppm), and AEC-Q100-qualified alternatives for automotive and precision instrumentation design.
Technical Context
The MAX6071BAUT18+T implements a bandgap-based series voltage reference with force-sense architecture: OUTF delivers regulated 1.8V output while OUTS provides remote sensing feedback, enabling stable regulation under PCB trace impedance. Its dual-ground structure (GNDF/GNDS) isolates force and sense return paths to minimize ground bounce errors.
Unlike the filter-capable MAX6070, the MAX6071 omits the FILTER pin and uses a simplified 6-pin SOT23 layout (EN, GNDF, GNDS, IN, OUTF, OUTS). It achieves 86dB ripple rejection at 60Hz and settles to 0.01% in 25µs on power-up-critical for fast-cycling data acquisition systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.800V ±0.04% at +25°C - enables direct interface with 1.8V logic and low-voltage ADC references without scaling. |
| Temp Drift (max) | 6ppm/°C (A grade) - ensures ≤±0.72mV total drift over –40°C to +125°C, supporting industrial-grade accuracy. |
| Noise (0.1–10Hz) | 6.4µVP-P - limits added noise in 24-bit sigma-delta ADC front-ends to <0.001 LSB. |
| Load Regulation | 135–225 µV/mA (sink/source) - maintains stability when driving DAC reference inputs or op-amp bias networks. |
| Dropout Voltage | 110–230mV at 10mA - allows operation from 1.91V supply, compatible with single-cell LiFePO₄ or LDO post-regulation. |
| Supply Current | 150µA typical - enables battery-powered portable instrumentation with multi-year runtime. |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive and factory-floor process control environments. |
Pinout & Package
Package: 6-pin SOT23 (U6+5A), 2.9mm × 1.6mm × 1.1mm body, 0.95mm pitch, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable Control Input | Logic-high (>0.7×VIN) activates reference; logic-low (<0.3×VIN) reduces supply current to 6µA for power gating. |
| 2 - GNDF | Force Ground Return | Carries high-current return path from OUTF; must be routed separately from GNDS to avoid IR drop errors. |
| 3 - GNDS | Sense Ground Reference | Connects to load-side ground near OUTS; establishes precise 0V reference for feedback loop. |
| 4 - IN | Supply Input | Accepts 2.7–5.5V; internal LDO rejects up to 86dB of 60Hz ripple for noisy industrial supplies. |
| 5 - OUTF | Force Output Terminal | Delivers 1.8V to load; bypass with 0.1–10µF capacitor to GNDF for stability and noise filtering. |
| 6 - OUTS | Sense Output Terminal | Provides feedback to internal error amplifier; short to OUTF at load point for Kelvin sensing. |
Key Features
| Feature | Design Value |
|---|---|
| Force-sense output architecture | Eliminates voltage error from PCB trace resistance up to 100mΩ between reference and load. |
| Ultra-low 1/f noise | 6.4µVP-P (0.1–10Hz) enables sub-16-bit ENOB preservation in precision data loggers. |
| AEC-Q100 Grade 1 qualification | Validated for automotive applications including engine control modules and ADAS sensor interfaces. |
| ±10mA sourcing/sinking capability | Directly drives ADC reference inputs, op-amp bias networks, or small DACs without external buffers. |
| 0.01% turn-on settling in 25µs | Supports burst-mode sampling in portable test equipment with minimal dead time between conversions. |
Applications
| High-Accuracy Industrial Sensors | Precision 16-Bit ADC Biasing |
|---|---|
|
Use Scenario: Monitoring strain gauges and RTDs in factory automation PLC analog input modules. IC Role / Device Role / Timing Role: Provides stable 1.8V reference for 24-bit ΣΔ ADCs measuring microvolt-level bridge outputs. Use Value: 6ppm/°C drift and 6.4µVP-P noise ensure <±0.005% full-scale measurement error across temperature. |
Use Scenario: Reference source for SAR ADCs in portable multimeters and handheld calibrators. IC Role / Device Role / Timing Role: Supplies low-noise, fast-settling reference to enable 1MSPS sampling without reference droop. Use Value: 25µs 0.01% settling and ±10mA drive eliminate need for external op-amp buffers, reducing BOM count. |
| Automotive Cabin Temperature Sensing | Medical Instrumentation Signal Chain |
|
Use Scenario: Reference for NTC thermistor interfaces in HVAC control units operating from 12V battery rails. IC Role / Device Role / Timing Role: Regulates 1.8V for microcontroller ADC and analog front-end, surviving cold-crank transients. Use Value: –40°C to +125°C operation and AEC-Q100 qualification ensure reliability in under-dash environments. |
Use Scenario: Reference voltage for ECG front-end instrumentation amplifiers and 24-bit medical ADCs. IC Role / Device Role / Timing Role: Delivers ultra-low-noise 1.8V bias to preserve signal integrity in sub-µV biopotential measurements. Use Value: 85ppm thermal hysteresis and 35ppm long-term stability meet IEC 60601-1 calibration retention requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6070BAUT18+T | Includes FILTER pin for external 0.1µF capacitor; 3µVRMS thermal noise (10Hz–10kHz) vs. MAX6071's 8.6µVRMS. | Better for wideband applications requiring <10kHz noise suppression; adds one passive component. | Select MAX6070BAUT18+T if system-level EMI mandates high-frequency noise filtering beyond internal design. |
| ADR4518BRZ | Higher initial accuracy (±0.02%), lower drift (3ppm/°C max), but larger SOIC-8 package and 450µA quiescent current. | Suitable for lab-grade instrumentation where board space and power are secondary to absolute accuracy. | Choose ADR4518BRZ only when 3ppm/°C drift and 0.02% accuracy are mandatory-and SOT23 size/power constraints are relaxed. |
Compared with MAX6070BAUT18+T, the MAX6071BAUT18+T trades filter flexibility for smaller footprint and faster enable settling (25µs vs. 60µs); versus ADR4518BRZ, it sacrifices 0.02% accuracy and 3ppm/°C drift for 70% lower supply current and 40% smaller area-ideal for space-constrained, battery-operated designs.
Availability
MAX6071BAUT18+T is available at Aetrix Electronics and suitable for high-accuracy industrial sensors, precision 16-bit ADC biasing, and automotive cabin temperature sensing requiring stable component supply across extended temperature ranges.
Supply support for MAX6071BAUT18+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 MAX6070/MAX6071 family delivers ultra-low-noise, low-drift voltage references optimized for precision data acquisition, sensor signal conditioning, and automotive-grade instrumentation where stability over temperature and time is critical.
FAQ
What is the maximum load current supported by the MAX6071BAUT18+T?
The MAX6071BAUT18+T sources and sinks up to ±10mA of load current while maintaining output regulation within specifications. This capability allows direct driving of ADC reference inputs, op-amp bias networks, and small DACs without external buffering-reducing component count and board area in compact designs.
Does the MAX6071BAUT18+T require an external filter capacitor?
No-the MAX6071BAUT18+T does not include a FILTER pin and has no provision for external high-frequency noise filtering. Unlike the MAX6070 variant, its internal design relies on OUTF bypassing (0.1–10µF to GNDF) and inherent PSRR (86dB at 60Hz) for noise suppression. For >10kHz noise, system-level filtering is required.
How does the force-sense architecture of the MAX6071BAUT18+T improve accuracy?
The MAX6071BAUT18+T uses separate OUTF (force) and OUTS (sense) pins with dedicated GNDF and GNDS returns. This Kelvin connection eliminates voltage drop errors caused by PCB trace resistance between the reference and load-ensuring the sensed output matches the actual load voltage even with 100mΩ of interconnect impedance.
Is the MAX6071BAUT18+T qualified for automotive applications?
Yes-the MAX6071BAUT18+T is AEC-Q100 qualified (Grade 1: –40°C to +125°C), making it suitable for automotive cabin and powertrain applications including HVAC sensor interfaces, battery monitoring, and ADAS subsystems where reliability under thermal stress is mandatory.
What is the typical supply current of the MAX6071BAUT18+T at +25°C?
The MAX6071BAUT18+T draws 150µA typical supply current at +25°C, with a maximum of 235µA over temperature. This ultra-low quiescent current enables multi-year battery life in portable instrumentation and wireless sensor nodes-critical for IoT edge devices with strict power budgets.
MAX6071BAUT18+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):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.08%
- Temperature Coefficient:
- 8ppm/°C
- Noise - 0.1Hz to 10Hz:
- 6µVp-p
- Noise - 10Hz to 10kHz:
- 7µVrms
- 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
MAX6071BAUT18+T FAQ
1.How can I place an order for MAX6071BAUT18+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6071BAUT18+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 MAX6071BAUT18+T reliable?
The price and inventory of MAX6071BAUT18+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6071BAUT18+T is usually 5 days.
3.What payment methods are accepted for MAX6071BAUT18+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6071BAUT18+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6071BAUT18+T?
MAX6071BAUT18+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6071BAUT18+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 MAX6071BAUT18+T?
For technical support, including MAX6071BAUT18+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6071BAUT18+T requirements.
6.How does Aetrix verify that MAX6071BAUT18+T is sourced from the original manufacturer or authorized distributors?
All MAX6071BAUT18+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 MAX6071BAUT18+T meets industry standards.
7.What is the process for return or replacement of MAX6071BAUT18+T?
All MAX6071BAUT18+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6071BAUT18+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 MAX6071BAUT18+T part is unused and in its original packaging.
Return procedure for MAX6071BAUT18+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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