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Analog Devices Inc./Maxim Integrated MAX6071AAUT25+T
- Part No.:
- MAX6071AAUT25+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
MAX6071AAUT25+T.pdf
- Description:
- IC VREF SERIES 0.04% SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:7,293
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Product details
Overview
MAX6071AAUT25+T from Analog Devices is a precision 2.5V 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 process control systems.
For engineers reviewing the MAX6071AAUT25+T datasheet, MAX6071AAUT25+T pinout, MAX6071AAUT25+T application, or MAX6071AAUT25+T equivalent, this device supports low-power, high-stability reference design in automotive AEC-Q100-compliant systems, precision instrumentation, and high-resolution data acquisition where thermal drift and broadband noise must be minimized.
Technical Context
The MAX6071AAUT25+T implements a bandgap-based series reference architecture with force-sense output topology (OUTF/OUTS), enabling accurate regulation under load variations up to ±10mA while maintaining stability with 0.1–10µF capacitive loads. Its dual-ground structure (GNDF/GNDS) isolates force and sense paths to minimize PCB trace resistance errors.
Unlike the filter-capable MAX6070, the MAX6071 omits the FILTER pin and integrates optimized internal compensation for faster turn-on settling (30µs to 0.01%) and enable settling (75µs), at the expense of high-frequency noise filtering capability-making it ideal for applications prioritizing speed over ultra-wideband noise suppression.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±0.04% at +25°C - ensures direct compatibility with 2.5V ADC full-scale ranges without calibration. |
| Temp Drift (max) | 6ppm/°C (A grade) - contributes ≤±0.15mV error over –40°C to +125°C, critical for unheated industrial sensors. |
| Noise (0.1–10Hz) | 4.8µVP-P - limits RMS noise contribution to <0.1 LSB in 24-bit ADCs with 2.5V reference span. |
| Supply Current | 150µA typical - enables operation from microcontroller GPIO or low-quiescent LDOs in battery-powered instruments. |
| Dropout Voltage | 110–230mV at 10mA - allows use with 2.8V input rails, supporting single-cell Li-ion or 3.3V system supplies. |
| Ripple Rejection | 84dB at 60Hz - suppresses power supply hum in PLC analog input modules without external LC filtering. |
| Enable Settling | 75µs to 0.01% - enables rapid power cycling in time-triggered measurement sequences (e.g., sensor polling every 100µs). |
Pinout & Package
Package: 6-pin SOT23 (U6+5/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 | Reference ground return path for internal bandgap and regulator circuitry; connects to local GND plane near IN/OUT pins. |
| 2 - GNDS | Ground Sense | Sense return for OUTS feedback loop; must connect to load-side ground to reject PCB trace IR drop errors. |
| 3 - EN | Enable Control | Active-high digital input (VIH = 0.7×VIN); enables fast shutdown (ISD ≤6µA) for power-gating in portable equipment. |
| 4 - IN | Supply Input | Input rail (2.8V–5.0V); requires 0.1µF ceramic bypass to GNDF close to pin for PSRR optimization. |
| 5 - OUTS | Voltage Sense Output | Feedback node for closed-loop regulation; ties directly to load ground to maintain accuracy under varying load currents. |
| 6 - OUTF | Voltage Force Output | Main reference output; must be shorted to OUTS near the load and bypassed with 0.1–10µF capacitor to GNDF. |
Key Features
| Feature | Design Value |
|---|---|
| Force-sense output topology | Eliminates voltage error from PCB trace resistance between reference IC and load, enabling ±0.01% system-level accuracy. |
| AEC-Q100 qualified (Grade 1) | Validated for automotive applications including engine control units and ADAS sensor interfaces operating from –40°C to +125°C. |
| Low 150µA quiescent current | Reduces self-heating to <0.5°C rise at +125°C ambient, preserving long-term drift stability in sealed enclosures. |
| Capacitive-load stable (0.1–10µF) | Supports direct connection to large bulk capacitors on ADC reference inputs without oscillation or overshoot. |
| 84dB ripple rejection at 60Hz | Enables clean reference operation from noisy switch-mode power supplies without additional linear regulators. |
Applications
| Industrial Process Transmitter | Precision Weigh Scale Front-End |
|---|---|
|
Use Scenario: 4–20mA loop-powered pressure transmitter with 24-bit ΣΔ ADC sampling strain gauge bridge outputs. IC Role / Device Role / Timing Role: Provides stable 2.5V reference for ADC and excitation voltage for bridge, rejecting supply ripple and thermal gradients. Use Value: Enables ±0.02% full-scale linearity over –40°C to +85°C without factory recalibration, meeting IEC 61000-6-2 immunity requirements. |
Use Scenario: Battery-operated portable weigh scale using low-noise instrumentation amplifier and 24-bit ADC. IC Role / Device Role / Timing Role: Supplies low-drift, low-noise reference to ADC and DAC used for auto-zero and gain calibration routines. Use Value: Delivers <1µV RMS noise floor and 6ppm/°C drift, achieving 100,000-count resolution with <0.005% repeatability across temperature. |
| Automotive Cabin Temperature Sensor | High-Resolution Data Logger |
|
Use Scenario: AEC-Q100-compliant NTC thermistor interface in HVAC control module, digitized via SAR ADC. IC Role / Device Role / Timing Role: Precision 2.5V reference for ratiometric ADC conversion, synchronized with microcontroller's internal clock. Use Value: Maintains ±0.1°C measurement accuracy over vehicle lifetime (15 years) due to <16ppm long-term stability and thermal hysteresis <85ppm. |
Use Scenario: Industrial environmental monitor logging temperature/humidity/pressure at 100Hz using multi-channel 24-bit ADC. IC Role / Device Role / Timing Role: Shared reference source for all ADC channels to ensure channel-to-channel gain matching and common-mode rejection. Use Value: Achieves <0.001% inter-channel gain error via force-sense topology, eliminating need for per-channel reference buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6070AAUT25+T | Includes FILTER pin and internal high-frequency noise filter; 3x slower turn-on (9.7ms vs. 30µs) and higher quiescent current (160µA typical). | Better suited for wideband RF test equipment where 10Hz–10kHz thermal noise must be minimized below 3µVRMS. | Select MAX6070AAUT25+T only when high-frequency noise dominates system error budget and speed is secondary. |
| ADR4525BRZ | Higher initial accuracy (±0.02%), lower drift (3ppm/°C max), but larger SOIC-8 package and 950µA supply current. | Preferred for lab-grade instrumentation requiring ultimate stability, not space-constrained portable designs. | Choose ADR4525BRZ when board area is not constrained and sub-ppm drift is mandatory-e.g., metrology calibrators. |
Compared with MAX6070AAUT25+T, the MAX6071AAUT25+T trades filter flexibility for 300× faster settling and 6× lower supply current; versus ADR4525BRZ, it offers 6× smaller footprint and 6× lower power at the cost of 2× higher drift and 0.02% less initial accuracy.
Availability
MAX6071AAUT25+T is available at Aetrix Electronics and suitable for industrial process transmitters, automotive cabin sensors, and portable precision data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6071AAUT25+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 delivers ultra-low-noise, low-drift series voltage references optimized for high-resolution data conversion in space- and power-constrained environments-from factory-floor PLCs to automotive ECUs.
FAQ
What is the maximum load current supported by the MAX6071AAUT25+T?
The MAX6071AAUT25+T supports ±10mA of load current-capable of sourcing up to +10mA and sinking up to –10mA while maintaining output voltage accuracy within specification. This enables direct driving of ADC reference inputs, op-amp bias networks, and small DACs without external buffers. Exceeding ±10mA may cause dropout or increased drift due to internal pass device limitations.
Does the MAX6071AAUT25+T require an external filter capacitor?
No-the MAX6071AAUT25+T does not include a FILTER pin and has no provision for external high-frequency noise filtering. It relies on internal compensation for stability and speed. For applications needing >84dB ripple rejection beyond 60Hz, a 0.1µF ceramic capacitor must be placed directly between OUTF and GNDF, and system-level filtering should be implemented upstream of the IN pin.
Can the MAX6071AAUT25+T be used with a 2.7V supply?
No-the MAX6071AAUT25+T specifies a minimum supply voltage of 2.8V (per Electrical Characteristics table for VOUT = 2.500V). At 2.7V, the device may fail to regulate or exhibit increased dropout and drift. For 2.7V operation, consider the MAX6071AAUT18+T (1.8V version) or verify margin with worst-case 230mV dropout at 10mA load.
How does the force-sense (OUTF/OUTS) configuration improve accuracy in the MAX6071AAUT25+T?
The force-sense topology in the MAX6071AAUT25+T separates the high-current OUTF path from the precision-sensing OUTS path. By routing OUTS directly to the load ground, voltage drops across PCB traces or connectors do not affect regulation-maintaining ±0.04% accuracy even with 100mΩ trace resistance. This eliminates the need for Kelvin connections in compact layouts.
Is the MAX6071AAUT25+T AEC-Q100 qualified, and what grade does it meet?
Yes-the MAX6071AAUT25+T is AEC-Q100 qualified per Grade 1 (–40°C to +125°C), verified through stress testing including HTOL, TC, and ESD. This qualification covers the full temperature range and confirms reliability for automotive body electronics, infotainment, and ADAS sensor interfaces-not just ambient-rated industrial use.
MAX6071AAUT25+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):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.04%
- Temperature Coefficient:
- 6ppm/°C
- Noise - 0.1Hz to 10Hz:
- 4.8µVp-p
- Noise - 10Hz to 10kHz:
- 6µVrms
- Voltage - Input:
- 2.8V ~ 5.5V
- Current - Supply:
- 300µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6071AAUT25+T FAQ
1.How can I place an order for MAX6071AAUT25+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6071AAUT25+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 MAX6071AAUT25+T reliable?
The price and inventory of MAX6071AAUT25+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6071AAUT25+T is usually 5 days.
3.What payment methods are accepted for MAX6071AAUT25+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6071AAUT25+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6071AAUT25+T?
MAX6071AAUT25+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6071AAUT25+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 MAX6071AAUT25+T?
For technical support, including MAX6071AAUT25+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6071AAUT25+T requirements.
6.How does Aetrix verify that MAX6071AAUT25+T is sourced from the original manufacturer or authorized distributors?
All MAX6071AAUT25+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 MAX6071AAUT25+T meets industry standards.
7.What is the process for return or replacement of MAX6071AAUT25+T?
All MAX6071AAUT25+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6071AAUT25+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 MAX6071AAUT25+T part is unused and in its original packaging.
Return procedure for MAX6071AAUT25+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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