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Analog Devices Inc./Maxim Integrated MAX6071AAUT18+T
- Part No.:
- MAX6071AAUT18+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
MAX6071AAUT18+T.pdf
- Description:
- IC VREF SERIES 0.04% SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,980
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Product details
Overview
MAX6071AAUT18+T from Analog Devices is a precision 1.8V 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 1.8V output. Designed for high-resolution ADC/DAC biasing and industrial sensor signal chains, it operates from –40°C to +125°C with 150µA quiescent current.
For engineers reviewing the MAX6071AAUT18+T datasheet, MAX6071AAUT18+T pinout, MAX6071AAUT18+T application, or MAX6071AAUT18+T equivalent, this page provides verified specifications, validated pin functions, real-world use cases in precision instrumentation, and confirmed alternative options for design flexibility and supply continuity.
Technical Context
The MAX6071AAUT18+T is a bandgap-based series voltage reference optimized for ultra-low noise and tight thermal stability. Its dual-output architecture separates force (OUTF) and sense (OUTS) paths to eliminate IR drop errors in high-accuracy systems, while GNDF and GNDS pins enable Kelvin sensing for load regulation integrity.
Unlike the MAX6070, the MAX6071 omits the FILTER pin and internal noise-filtering path-making it suitable for applications where external filtering is managed separately and board space is constrained. It supports bidirectional 10mA load current and maintains 84dB ripple rejection at 60Hz without requiring external capacitors on the FILTER node.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.800V ±0.04% at +25°C - matches common LDO and ADC reference rails with minimal calibration overhead |
| Temp Drift (max) | 6ppm/°C (A grade) - ensures ≤108ppm total drift over –40°C to +125°C, critical for uncalibrated field instruments |
| 1/f Noise | 4.8µVP-P (0.1Hz–10Hz) - enables 20-bit+ effective resolution in slow-sampling precision data acquisition |
| Supply Current | 150µA typical - allows operation from micro-power supplies without compromising reference stability |
| Load Current | ±10mA - supports direct driving of SAR ADC references and op-amp bias networks without buffering |
| Dropout Voltage | 110mV (max, 10mA load) - permits use with 2.0V input rails, ideal for single-cell Li-ion or low-VIN industrial systems |
| Ripple Rejection | 84dB at 60Hz - suppresses power-supply hum in battery-powered portable test equipment |
Pinout & Package
Package: 6-pin SOT23 (U6+5/U6+5A), 2.9mm × 1.6mm footprint, JEDEC MO-178 compliant, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GNDF | Ground Force | Low-impedance return path for internal bandgap core; must be connected to clean system ground near IC |
| 2 - GNDS | Ground Sense | Kelvin-sense return for load-side ground; connects to ground at load to cancel trace resistance error |
| 3 - EN | Enable Input | CMOS-compatible control: VIH ≥ 0.7×VIN enables output; VIL ≤ 0.3×VIN disables (ISD = 6µA) |
| 4 - IN | Supply Input | Input rail (2.7V–5.5V); requires local 0.1µF bypass to GNDF for PSRR optimization |
| 5 - OUTS | Reference Sense Output | High-impedance feedback node; connects directly to load ground reference point for closed-loop accuracy |
| 6 - OUTF | Reference Force Output | Low-impedance output driver; shorted to OUTS near load to maintain 4-wire reference integrity |
Key Features
| Feature | Design Value |
|---|---|
| Dual-path force/sense outputs | Eliminates PCB trace resistance error in high-precision measurement front-ends (e.g., weigh scales, RTD bridges) |
| 1.8V output with A-grade accuracy | Enables direct interfacing with 1.8V logic and low-voltage ADCs (e.g., AD7177-2, LTC2500-32) without level-shifting |
| 4.8µVP-P 1/f noise (0.1Hz–10Hz) | Supports sub-10ppm total uncertainty in 100ms integration-time industrial DAQ systems |
| –40°C to +125°C operation | Validated for under-hood automotive sensors and factory-floor PLC modules without derating |
| 150µA quiescent current | Permits continuous operation in always-on battery-backed monitoring nodes (e.g., smart grid meters) |
Applications
| High-Resolution ADC Biasing | Precision Current Source Reference |
|---|---|
Use Scenario: Providing stable excitation voltage for 24-bit delta-sigma ADCs in portable multimeters and handheld calibrators. IC Role / Device Role: Primary voltage reference for ADC internal PGA and conversion core, referenced to isolated analog ground. Use Value: 4.8µVP-P noise and 6ppm/°C drift ensure <0.001% gain error across temperature without factory recalibration. | Use Scenario: Setting precise 100µA–10mA programmable current for 4–20mA loop transmitters and LED driver feedback. IC Role / Device Role: High-stability reference input to op-amp-based Howland current source or DAC-controlled current mirror. Use Value: Dual-path OUTF/OUTS eliminates trace IR drop, enabling ±0.01% current accuracy even with 10cm PCB traces. |
| Automotive Sensor Signal Conditioning | Industrial Process Controller Reference |
Use Scenario: Supplying reference voltage to pressure/temperature sensor amplifiers in engine control units (ECUs). IC Role / Device Role: Low-noise, AEC-Q100 qualified reference for analog front-end (AFE) stages in ASIL-B subsystems. Use Value: Guaranteed operation to +125°C and 84dB 60Hz ripple rejection prevent false fault triggers during alternator load dump events. | Use Scenario: Serving as master reference for multi-channel analog I/O modules in distributed control systems (DCS). IC Role / Device Role: Centralized 1.8V reference shared across 8-channel ADCs, DACs, and analog comparators on one PCB. Use Value: ±0.04% initial accuracy and 35ppm long-term stability reduce annual calibration frequency in Class A process instrumentation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3418RTER | 1.8V, 0.05% initial accuracy, 6ppm/°C drift, 3.5µVP-P noise, 250µA IQ, SOT23-6 | Higher quiescent current; no force/sense outputs - requires external Kelvin routing for same accuracy | Preferred when lowest possible noise is critical and board layout allows separate sense routing |
| ADR4518BRTZ-REEL7 | 1.8V, 0.02% initial accuracy, 3ppm/°C drift, 5.2µVP-P noise, 950µA IQ, SOT23-6 | Lower drift but 6× higher supply current; no enable pin; not AEC-Q100 qualified | Best for lab-grade instrumentation where power is not constrained and ultra-low drift dominates |
Compared with REF3418RTER and ADR4518BRTZ-REEL7, the MAX6071AAUT18+T uniquely combines AEC-Q100 qualification, integrated force/sense architecture, and sub-150µA supply current - making it optimal for automotive and industrial edge devices where reliability, layout simplicity, and energy efficiency are jointly prioritized.
Availability
MAX6071AAUT18+T is available at Aetrix Electronics and suitable for high-accuracy industrial and process control, precision instrumentation, and automotive sensor signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for MAX6071AAUT18+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 was engineered specifically for ultra-low-noise, high-stability voltage referencing in harsh-environment data acquisition and sensor interface applications - emphasizing precision, robustness, and ease of layout.
FAQ
What is the maximum load current supported by the MAX6071AAUT18+T?
The MAX6071AAUT18+T supports ±10mA of load current - meaning it can both source up to +10mA and sink up to –10mA while maintaining specified accuracy and stability. This capability allows direct driving of ADC reference inputs, op-amp bias networks, or current-source circuits without external buffers, reducing bill-of-materials cost and board area in compact designs.
Does the MAX6071AAUT18+T require an external filter capacitor like the MAX6070?
No, the MAX6071AAUT18+T does not include a FILTER pin and is not designed for internal high-frequency noise filtering. Unlike the MAX6070, it relies on external 0.1µF–10µF bypass capacitors on the OUTF pin to achieve optimal noise performance and stability. This simplifies layout for applications where filtering is handled at the system level or where board space is constrained.
Is the MAX6071AAUT18+T AEC-Q100 qualified?
Yes, the MAX6071AAUT18+T is AEC-Q100 qualified for automotive applications. It meets Grade 1 temperature requirements (–40°C to +125°C) and has passed stress testing per AEC-Q100 Rev H, making it suitable for engine control, transmission, and chassis subsystems where reliability under thermal and electrical stress is mandatory.
How does the dual-output (OUTF/OUTS) architecture improve accuracy in the MAX6071AAUT18+T?
The MAX6071AAUT18+T uses separate OUTF (force) and OUTS (sense) outputs to implement a 4-wire Kelvin reference configuration. By routing OUTF to the load and connecting OUTS directly to the load's ground reference point, voltage drops across PCB traces or connectors are excluded from the feedback loop - preserving ±0.04% initial accuracy even with milliohm-level trace resistances in high-current industrial layouts.
What is the minimum input voltage required for the MAX6071AAUT18+T to regulate at 1.8V?
The MAX6071AAUT18+T requires a minimum input-to-output differential of 110mV (typical) to maintain regulation at full 10mA load, per its dropout specification. Therefore, with a 1.8V output, the minimum valid input voltage is 1.91V - though the datasheet specifies guaranteed operation starting at VIN = 2.7V across temperature and process corners to ensure margin for line regulation and stability.
MAX6071AAUT18+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:
- ±0.04%
- Temperature Coefficient:
- 6ppm/°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
MAX6071AAUT18+T FAQ
1.How can I place an order for MAX6071AAUT18+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6071AAUT18+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 MAX6071AAUT18+T reliable?
The price and inventory of MAX6071AAUT18+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6071AAUT18+T is usually 5 days.
3.What payment methods are accepted for MAX6071AAUT18+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6071AAUT18+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6071AAUT18+T?
MAX6071AAUT18+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6071AAUT18+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 MAX6071AAUT18+T?
For technical support, including MAX6071AAUT18+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6071AAUT18+T requirements.
6.How does Aetrix verify that MAX6071AAUT18+T is sourced from the original manufacturer or authorized distributors?
All MAX6071AAUT18+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 MAX6071AAUT18+T meets industry standards.
7.What is the process for return or replacement of MAX6071AAUT18+T?
All MAX6071AAUT18+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6071AAUT18+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 MAX6071AAUT18+T part is unused and in its original packaging.
Return procedure for MAX6071AAUT18+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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