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Analog Devices Inc./Maxim Integrated MAX6071AAUT41+
- Part No.:
- MAX6071AAUT41+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
MAX6071AAUT41+.pdf
- Description:
- LOW NOISE, LOW DRIFT SOT23 VOLTA
- Quantity:
- Payment:
- Shipping:
Inventory:4,129
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Product details
Overview
MAX6071AAUT41+ from Analog Devices is a precision 4.096V 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 9µVP-P 1/f noise (0.1Hz–10Hz). It sources/sinks ±10mA, operates from 4.3V to 5.5V input, and targets high-resolution ADC/DAC biasing in industrial instrumentation.
For engineers reviewing the MAX6071AAUT41+ datasheet, MAX6071AAUT41+ pinout, MAX6071AAUT41+ application, or MAX6071AAUT41+ equivalent, key selection criteria include output stability over -40°C to +125°C, low dropout (60–150mV at 10mA), 84dB ripple rejection at 60Hz, and enable settling time of 100µs - critical for precision data acquisition systems requiring fast power-up and low-noise reference rails.
Technical Context
The MAX6071AAUT41+ implements a bandgap-based series voltage reference architecture with force-sense output topology (OUTF/GNDF and OUTS/GNDS pins), enabling Kelvin sensing to reject PCB trace resistance errors. Its dual-ground structure isolates force and sense return paths, maintaining accuracy under load-induced ground shifts.
Unlike the filter-capable MAX6070 variant, the MAX6071AAUT41+ omits the FILTER pin and associated internal RC network, resulting in faster turn-on (50µs) and enable (100µs) settling but higher wideband thermal noise (15µVRMS, 10Hz–10kHz). It supports capacitive loads from 0.1µF to 10µF without oscillation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.04% at +25°C - matches common 12-bit DAC/ADC full-scale codes for zero-gain error calibration. |
| Temp Drift (max) | 6ppm/°C (A grade) - ensures ≤±0.5mV output shift across -40°C to +125°C, critical for uncalibrated industrial sensors. |
| 1/f Noise | 9µVP-P (0.1Hz–10Hz) - enables sub-16-bit effective resolution in low-frequency measurement systems. |
| Dropout Voltage | 60–150mV at 10mA - allows operation with only 4.3V supply, supporting low-voltage microcontroller domains. |
| Ripple Rejection | 84dB at 60Hz - suppresses AC line interference in mains-powered test equipment and PLC analog I/O modules. |
| Enable Settling | 100µs to 0.01% - enables synchronized wake-up in battery-powered portable instruments with strict power sequencing. |
| Supply Current | 160–250µA (typ/max over temp) - permits integration into always-on sensor nodes with multi-year battery life. |
Pinout & Package
Package: 6-pin SOT23 (U6+5/U6+5A), 2.9mm × 1.6mm footprint, JEDEC MS-012 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GNDF | Ground Force | Return path for OUTF; connects to local ground near reference output capacitor to minimize force-loop impedance. |
| 2 - GNDS | Ground Sense | Sense return for OUTS; ties to load-side ground to eliminate voltage drop error from PCB trace resistance. |
| 3 - EN | Enable Input | Active-high digital control (VIH = 0.7×VIN); draws ≤1µA, enabling low-power sleep modes in data loggers. |
| 4 - IN | Supply Input | Input rail (4.3–5.5V); requires 0.1µF bypass capacitor to GNDF for PSRR optimization. |
| 5 - OUTS | Reference Sense Output | High-impedance Kelvin sense node; connects directly to ADC reference input or DAC VREF pin. |
| 6 - OUTF | Reference Force Output | Low-impedance drive node; shorted to OUTS near load and bypassed with 0.1–10µF capacitor to GNDF. |
Key Features
| Feature | Design Value |
|---|---|
| Force-Sense Output Architecture | Eliminates errors from PCB trace resistance by separating force (OUTF/GNDF) and sense (OUTS/GNDS) paths - essential for ±0.01% system accuracy. |
| Ultra-Low 1/f Noise | 9µVP-P (0.1Hz–10Hz) enables stable DC biasing in weigh scales, strain gauge amplifiers, and thermocouple cold-junction compensation. |
| AEC-Q100 Qualified | Rated for automotive applications (Grade 1: -40°C to +125°C), supporting engine control unit (ECU) sensor signal conditioning and ADAS power monitoring. |
| Wide Supply Range | Operates from 4.3V to 5.5V - compatible with both 5V legacy systems and modern 4.5V–5.5V LDO outputs, reducing BOM count. |
| Capacitive Load Stability | Stable with 0.1µF–10µF output capacitance - simplifies layout by allowing ceramic bulk + tantalum decoupling without phase-margin analysis. |
Applications
| High-Resolution Data Acquisition | Precision Instrumentation |
|---|---|
Use Scenario: 24-bit delta-sigma ADC in portable multimeter measuring µV-level thermocouple signals. IC Role / Device Role / Timing Role: Provides ultra-stable 4.096V reference for ADC full-scale range, directly determining absolute measurement accuracy. Use Value: 6ppm/°C drift and 9µVP-P noise ensure <0.005% total unadjusted error over temperature, eliminating need for per-unit calibration. | Use Scenario: Benchtop digital calibrator generating precise 4.096V test voltages for DMM verification. IC Role / Device Role / Timing Role: Serves as primary voltage standard in closed-loop feedback circuit controlling high-accuracy DAC output. Use Value: ±0.04% initial accuracy and 35ppm long-term stability (1000h) guarantee traceable metrology-grade output without annual recalibration. |
| Industrial Process Control | Automotive Sensor Conditioning |
Use Scenario: 4–20mA transmitter module in hazardous-area pressure transmitters. IC Role / Device Role / Timing Role: References the current-loop DAC and ADC used for diagnostics and loop-powered sensor excitation. Use Value: 125°C operating range and AEC-Q100 qualification ensure reliability in oil/gas field environments with minimal derating. | Use Scenario: Battery management system (BMS) cell voltage monitor in EV traction battery packs. IC Role / Device Role / Timing Role: Supplies reference for 16-bit SAR ADC sampling individual Li-ion cell voltages (0–5V range). Use Value: 84dB 60Hz ripple rejection prevents AC coupling noise from nearby inverters from corrupting cell voltage readings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4540BRZ | 4.096V, 3ppm/°C max drift, 5.5µVP-P noise, SOIC-8 package, no enable pin | Higher accuracy and lower noise, but larger footprint and no shutdown - unsuitable for space-constrained portable designs | Select when ultimate stability outweighs size/power constraints; verify SOIC-8 layout compatibility. |
| REF5040AIDR | 4.096V, 3ppm/°C max drift, 6.5µVP-P noise, SOIC-8, 1.2mA quiescent current | Lower drift/noise than MAX6071AAUT41+, but 5× higher supply current limits battery life in portable gear | Choose for lab-grade instrumentation where power is not constrained and sub-ppm stability is mandatory. |
Compared with ADR4540BRZ and REF5040AIDR, the MAX6071AAUT41+ trades 2–3ppm/°C higher drift and ~3µVP-P more 1/f noise for 6× lower quiescent current and SOT23 size - making it optimal for compact, battery-operated precision systems where moderate accuracy suffices.
Availability
MAX6071AAUT41+ is available at Aetrix Electronics and suitable for high-resolution data acquisition, precision instrumentation, and industrial process control requiring stable component supply across extended temperature ranges.
Supply support for MAX6071AAUT41+ 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 low-noise, low-drift voltage references optimized for high-precision data conversion and sensor signal chains in harsh environments.
FAQ
What is the maximum load current supported by the MAX6071AAUT41+?
The MAX6071AAUT41+ can source and sink up to ±10mA of load current while maintaining output regulation and specified accuracy. This capability supports direct driving of ADC reference inputs, op-amp bias networks, and small DAC loads without external buffering - verified across the full -40°C to +125°C operating range per datasheet Section "Electrical Characteristics-MAX607__AUT41".
Does the MAX6071AAUT41+ require an external filter capacitor like the MAX6070?
No, the MAX6071AAUT41+ does not include a FILTER pin or internal filter network. Unlike the MAX6070, it is optimized for speed (50µs turn-on, 100µs enable settling) rather than ultra-low wideband noise - confirmed by pin configuration diagrams and absence of FILTER pin in MAX6071-specific electrical tables on pages 9 and 18 of the datasheet.
What is the minimum input voltage required for the MAX6071AAUT41+ to maintain regulation at full load?
The MAX6071AAUT41+ requires a minimum input voltage of 4.3V to maintain regulation at 10mA load current over temperature, based on its 60–150mV dropout specification (Note 5, page 10). At 4.3V input and 4.096V output, the 204mV headroom exceeds the worst-case 150mV dropout, ensuring stable operation in 4.5V nominal supply systems.
How does the force-sense architecture of the MAX6071AAUT41+ improve system accuracy?
The MAX6071AAUT41+ uses separate OUTF/GNDF (force) and OUTS/GNDS (sense) terminals to eliminate voltage errors caused by PCB trace resistance between the IC and load. By routing the high-current force path separately from the high-impedance sense path, it achieves true Kelvin connection - preserving the ±0.04% initial accuracy even with 100mΩ trace resistance, as detailed in the "Pin Description" section (page 18).
Is the MAX6071AAUT41+ suitable for automotive applications?
Yes, the MAX6071AAUT41+ is AEC-Q100 qualified (Grade 1: -40°C to +125°C) and specified for automotive use, including engine control, battery monitoring, and ADAS sensor signal conditioning. Its 125°C junction rating, 85ppm thermal hysteresis, and robust PSRR make it appropriate for under-hood and cabin electronics per datasheet "Ordering Information" and "Absolute Maximum Ratings" sections.
MAX6071AAUT41+ 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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.04%
- Temperature Coefficient:
- 6ppm/°C
- Noise - 0.1Hz to 10Hz:
- 9.6µVp-p
- Noise - 10Hz to 10kHz:
- 9µVrms
- Voltage - Input:
- 4.3V ~ 5.5V
- Current - Supply:
- 350µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6071AAUT41+ FAQ
1.How can I place an order for MAX6071AAUT41+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6071AAUT41+ 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 MAX6071AAUT41+ reliable?
The price and inventory of MAX6071AAUT41+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6071AAUT41+ is usually 5 days.
3.What payment methods are accepted for MAX6071AAUT41+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6071AAUT41+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6071AAUT41+?
MAX6071AAUT41+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6071AAUT41+ 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 MAX6071AAUT41+?
For technical support, including MAX6071AAUT41+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6071AAUT41+ requirements.
6.How does Aetrix verify that MAX6071AAUT41+ is sourced from the original manufacturer or authorized distributors?
All MAX6071AAUT41+ 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 MAX6071AAUT41+ meets industry standards.
7.What is the process for return or replacement of MAX6071AAUT41+?
All MAX6071AAUT41+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6071AAUT41+, 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 MAX6071AAUT41+ part is unused and in its original packaging.
Return procedure for MAX6071AAUT41+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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