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Analog Devices Inc./Maxim Integrated MAX6071BAUT25+T
- Part No.:
- MAX6071BAUT25+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
MAX6071BAUT25+T.pdf
- Description:
- IC VREF SERIES 0.08% SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:11,557
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Product details
Overview
MAX6071BAUT25+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 1/f noise (0.1Hz–10Hz). It sources/sinks ±10mA, operates from 2.8V to 5.0V input, and targets high-accuracy ADC/DAC biasing in industrial process control systems.
For engineers reviewing the MAX6071BAUT25+T datasheet, MAX6071BAUT25+T pinout, MAX6071BAUT25+T application, or MAX6071BAUT25+T equivalent, key selection criteria include low-noise performance for sub-16-bit precision systems, AEC-Q100 qualification for automotive use, dropout voltage under 230mV at 10mA load, and dual ground (GNDF/GNDS) architecture enabling Kelvin-sense stability in noisy environments.
Technical Context
The MAX6071BAUT25+T implements a bandgap-based series voltage reference with force-sense (OUTF/OUTS) topology and separate force (GNDF) and sense (GNDS) grounds to reject PCB trace resistance effects. Its internal architecture supports both sourcing and sinking up to 10mA while maintaining tight regulation across –40°C to +125°C.
Unlike the filter-capable MAX6070, the MAX6071BAUT25+T omits the FILTER pin and uses a simplified 6-pin SOT23 configuration (EN, GNDF, GNDS, IN, OUTF, OUTS), optimizing for low-noise operation without external high-frequency filtering-making it ideal for stable, wideband precision analog signal chains where layout-controlled noise dominates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±0.04% at +25°C - enables direct interface with 2.5V ADC references and rail-to-rail DACs without scaling. |
| Temp Drift (max) | 6ppm/°C (A grade) - ensures ≤±150µV output shift over –40°C to +125°C, critical for uncalibrated industrial sensors. |
| 1/f Noise | 4.8µVP-P (0.1Hz–10Hz) - limits low-frequency error in high-resolution data acquisition systems (e.g., 24-bit sigma-delta ADCs). |
| Supply Current | 150µA typical - allows battery-powered instrumentation with multi-year runtime when paired with low-power microcontrollers. |
| Load Current | ±10mA sourcing/sinking - supports driving multiple op-amp bias networks or SAR ADC reference inputs without external buffers. |
| Dropout Voltage | 230mV max at 10mA - permits operation from 2.8V supply rails, compatible with single-cell Li-ion or 3.3V LDO outputs. |
| Ripple Rejection | 84dB at 60Hz - suppresses power-supply hum in AC-powered test equipment and PLC analog I/O modules. |
Pinout & Package
Package: 6-pin SOT23 (U6+5A), 2.9mm × 1.6mm footprint, RoHS-compliant, rated for –40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable Control Input | Active-high logic input; drives device into 6µA shutdown mode when low-enables power-gating in portable instruments. |
| 2 - GNDF | Force Ground | Return path for internal reference core; must be connected to clean ground near IC to minimize PSRR degradation. |
| 3 - GNDS | Sense Ground | Kelvin connection point for load-side ground; ties to ground at the ADC/DAC to eliminate trace IR drop errors. |
| 4 - IN | Supply Input | Accepts 2.8V–5.0V; internal LDO structure provides regulation independence from input ripple and line variation. |
| 5 - OUTF | Force Output | Delivers regulated 2.5V; bypassed externally with 0.1µF–10µF capacitor to GND for stability and noise reduction. |
| 6 - OUTS | Sense Output | Feedback node for internal amplifier; shorted directly to OUTF at the load to close the Kelvin loop and cancel trace resistance. |
Key Features
| Feature | Design Value |
|---|---|
| Force-Sense Output Architecture | Eliminates voltage error from PCB trace resistance between reference and load-critical for ±0.001% system accuracy. |
| AEC-Q100 Qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces requiring Grade 1 reliability. |
| Low 150µA Quiescent Current | Enables always-on reference operation in energy-harvesting nodes and battery-backed data loggers with >10-year shelf life. |
| ±10mA Output Drive Capability | Directly powers multiple precision op-amps or reference inputs without external buffers-reducing BOM count and board area. |
| 84dB Power Supply Ripple Rejection | Rejects switching regulator noise at 60Hz and harmonics-essential for mixed-signal systems sharing noisy DC/DC supplies. |
Applications
| High-Accuracy Industrial Process Control | Precision Instrumentation |
|---|---|
Use Scenario: 4–20mA transmitter calibration circuitry in hazardous-area field devices. IC Role / Device Role / Timing Role: Provides stable 2.5V reference for DAC output stage and current-loop sensing resistor bias. Use Value: ±0.04% initial accuracy and 6ppm/°C drift ensure <±0.1% full-scale error over temperature without factory recalibration. | Use Scenario: Portable handheld multimeter front-end with 6½-digit resolution. IC Role / Device Role / Timing Role: Supplies reference voltage to dual-slope integrator and auto-zero amplifier stages. Use Value: 4.8µVP-P 1/f noise prevents low-frequency drift that would corrupt long-integration measurements. |
| High-Resolution ADCs and DACs | Precision Current Sources |
Use Scenario: 24-bit sigma-delta ADC in weigh scale controller with isolated analog front-end. IC Role / Device Role / Timing Role: Reference source for ADC's internal PGA and external gain-setting resistors. Use Value: Force-sense (OUTF/OUTS) topology maintains <10ppm reference error despite 100mΩ PCB trace resistance to ADC. | Use Scenario: Programmable LED driver with closed-loop current feedback using shunt-sense amplifier. IC Role / Device Role / Timing Role: Sets precise 2.5V threshold for transconductance amplifier controlling MOSFET gate. Use Value: ±10mA sourcing capability drives op-amp input directly-eliminating need for level-shifting resistors and associated thermal EMFs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5025IDR | Higher 3ppm/°C max drift, 3.8µVP-P noise, but requires external 10µF output cap; no force-sense pins. | Lacks Kelvin sensing-unsuitable for high-accuracy remote load configurations with >50mΩ trace resistance. | Select REF5025IDR only when board layout guarantees minimal trace resistance and lower drift is prioritized over layout flexibility. |
| ADR4525BRZ | Lower 2ppm/°C max drift, 3.5µVP-P noise, but 2.2mA quiescent current and no enable pin-no shutdown capability. | Not suitable for battery-powered or duty-cycled systems due to fixed high supply current. | Choose ADR4525BRZ for mains-powered lab equipment where ultimate drift performance outweighs power efficiency. |
Compared with REF5025IDR and ADR4525BRZ, the MAX6071BAUT25+T uniquely balances ultra-low noise, force-sense accuracy, micropower shutdown, and AEC-Q100 qualification-making it the optimal choice for space-constrained, high-reliability industrial and automotive analog signal chains where layout-induced errors must be actively canceled.
Availability
MAX6071BAUT25+T is available at Aetrix Electronics and suitable for high-accuracy industrial process control, precision instrumentation, and automotive sensor interface applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6071BAUT25+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 MAX6071BAUT25+T belongs to the MAX6070/MAX6071 low-noise, high-precision series voltage reference product line, engineered specifically for applications demanding sub-10ppm total error over temperature and ultra-low 1/f noise in compact packages.
FAQ
What is the maximum operating temperature range for the MAX6071BAUT25+T?
The MAX6071BAUT25+T is specified for continuous operation from –40°C to +125°C, with junction temperature limited to +150°C. This extended industrial temperature range makes the MAX6071BAUT25+T suitable for under-hood automotive electronics and factory-floor process controllers where ambient temperatures exceed standard commercial limits.
Does the MAX6071BAUT25+T require an external filter capacitor like the MAX6070?
No, the MAX6071BAUT25+T does not include a FILTER pin and is not designed for external high-frequency noise filtering. Unlike the MAX6070, the MAX6071BAUT25+T relies on its intrinsic low-noise architecture and recommended 0.1µF–10µF bypass capacitor on OUTF to achieve 4.8µVP-P 1/f noise and 84dB ripple rejection without additional filtering components.
How does the force-sense (OUTF/OUTS) configuration of the MAX6071BAUT25+T improve accuracy?
The MAX6071BAUT25+T uses separate OUTF (force) and OUTS (sense) outputs with dedicated GNDF and GNDS pins to implement a Kelvin connection. By routing OUTF to the load and feeding OUTS back to the internal amplifier, the MAX6071BAUT25+T cancels voltage drop across PCB traces-ensuring the reference voltage delivered to the load remains accurate even with trace resistances up to 100mΩ.
Is the MAX6071BAUT25+T AEC-Q100 qualified, and what grade does it meet?
Yes, the MAX6071BAUT25+T is AEC-Q100 qualified per the datasheet ordering information. It meets Grade 1 requirements (–40°C to +125°C), confirming its suitability for automotive powertrain, chassis, and advanced driver-assistance systems (ADAS) where reliability under thermal stress and vibration is mandatory.
What is the typical enable settling time for the MAX6071BAUT25+T after asserting the EN pin?
The MAX6071BAUT25+T achieves 0.01% output settling in 75µs after the EN pin transitions high, as measured with a 0.1µF output capacitor. This fast wake-up time supports burst-mode operation in portable test equipment and low-duty-cycle sensor nodes where rapid reference stabilization is required between measurement cycles.
MAX6071BAUT25+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:
- ±0.08%
- Temperature Coefficient:
- 8ppm/°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
MAX6071BAUT25+T FAQ
1.How can I place an order for MAX6071BAUT25+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6071BAUT25+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 MAX6071BAUT25+T reliable?
The price and inventory of MAX6071BAUT25+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6071BAUT25+T is usually 5 days.
3.What payment methods are accepted for MAX6071BAUT25+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6071BAUT25+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6071BAUT25+T?
MAX6071BAUT25+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6071BAUT25+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 MAX6071BAUT25+T?
For technical support, including MAX6071BAUT25+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6071BAUT25+T requirements.
6.How does Aetrix verify that MAX6071BAUT25+T is sourced from the original manufacturer or authorized distributors?
All MAX6071BAUT25+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 MAX6071BAUT25+T meets industry standards.
7.What is the process for return or replacement of MAX6071BAUT25+T?
All MAX6071BAUT25+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6071BAUT25+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 MAX6071BAUT25+T part is unused and in its original packaging.
Return procedure for MAX6071BAUT25+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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