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Analog Devices Inc./Maxim Integrated MAX6070BAUT12/V+
- Part No.:
- MAX6070BAUT12/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
MAX6070BAUT12/V+.pdf
- Description:
- LOW-NOISE, HIGH-PRECISION SERIES
- Quantity:
- Payment:
- Shipping:
Inventory:3,161
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Product details
Overview
MAX6070BAUT12/V+ from Analog Devices is a precision 1.25V low-noise, low-drift series voltage reference in a 6-pin SOT23 package. It delivers ±0.08% initial accuracy, 6ppm/°C max temperature drift (A grade), 4.8µVP-P 0.1Hz–10Hz noise, and supports ±10mA load current - enabling high-accuracy ADC/DAC biasing in industrial sensor signal chains.
For engineers reviewing the MAX6070BAUT12/V+ datasheet, MAX6070BAUT12/V+ pinout, MAX6070BAUT12/V+ application, or MAX6070BAUT12/V+ equivalent, key selection criteria include its filter-enabled wideband noise suppression, 2.7V to 5.5V input range, 150µA quiescent current, and AEC-Q100 qualification for automotive-grade stability.
Technical Context
The MAX6070BAUT12/V+ implements a bandgap-based series reference architecture with separate force (OUTF) and sense (OUTS) outputs, enabling Kelvin sensing to reject PCB trace resistance errors. Its integrated FILTER pin accepts an external 0.1µF capacitor to suppress high-frequency noise beyond 10kHz.
It features active enable control (EN), operates across –40°C to +125°C, and maintains 0.2% output regulation over ±10mA sourcing/sinking loads - critical for precision current sources and ratiometric measurement systems where reference stability directly defines system accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.250V ±0.08% at +25°C - matches standard DAC/ADC reference rails and enables direct interface with 12-bit+ converters without scaling. |
| Temp Drift (max) | 6ppm/°C (A grade) - ensures ≤75ppm total drift over –40°C to +125°C, supporting <0.01% system gain error in process control loops. |
| 1/f Noise | 4.8µVP-P (0.1Hz–10Hz) - minimizes low-frequency error in high-resolution weigh-scale and strain-gauge front-ends. |
| Supply Current | 150µA typical - allows battery-powered portable instrumentation to achieve >10-year shelf life with coin-cell sources. |
| Load Current | ±10mA - drives 10kΩ minimum load impedance while maintaining regulation, sufficient for op-amp buffers and multi-channel ADC references. |
| Input Voltage Range | 2.7V to 5.5V - compatible with 3.3V and 5V supply domains, including automotive 12V systems via LDO pre-regulation. |
| Ripple Rejection | 89dB at 60Hz - rejects power-supply hum in industrial PLC analog I/O modules without additional filtering. |
Pinout & Package
Package: 6-pin SOT23 (U6+5/U6+5A), 2.9mm × 1.6mm × 1.1mm body, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FILTER | Noise filter input | Accepts 0.1µF capacitor to ground; enables high-frequency noise attenuation for wideband applications like audio ADCs. |
| GNDF | Force ground | Provides dedicated return path for OUTF; used with Kelvin connection to eliminate PCB IR drop error in high-accuracy circuits. |
| EN | Enable control | Active-high logic input; places device in 6µA shutdown mode when low - essential for power-gated sensor nodes. |
| IN | Supply input | Accepts 2.7V–5.5V unregulated input; internal regulation ensures stable 1.25V output independent of supply ripple. |
| OUTS | Sense output | Connects to load-side ground; forms feedback loop with OUTF to compensate for trace resistance up to 100mΩ. |
| OUTF | Force output | Delivers regulated 1.25V; must be shorted to OUTS near the load to close Kelvin loop and maintain accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Kelvin force-sense outputs | Eliminates voltage error from PCB trace resistance; maintains ±0.08% accuracy even with 50mΩ interconnect paths. |
| Integrated noise filter option | Reduces 10Hz–10kHz thermal noise to 2.5µVRMS when 0.1µF capacitor is added - critical for 24-bit delta-sigma ADCs. |
| AEC-Q100 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces per Grade 1 (–40°C to +125°C). |
| Low dropout voltage | 110mV typical at 10mA load - enables operation from 1.36V input, supporting ultra-low-voltage battery-backed real-time clocks. |
| High PSRR | 89dB at 60Hz and >60dB up to 10kHz - removes need for external LC filters in noisy industrial power environments. |
Applications
| High-Accuracy Industrial Control | Precision Instrumentation |
|---|---|
Use Scenario: Analog input module in a PLC measuring 4–20mA current loops with 16-bit resolution. IC Role / Device Role / Timing Role: Provides stable 1.25V reference for the 24-bit sigma-delta ADC's internal PGA and conversion core. Use Value: 6ppm/°C drift limits gain error to <0.008% over ambient temperature swings, meeting SIL-2 functional safety calibration requirements. | Use Scenario: Handheld multimeter with autoranging and true RMS measurement. 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 baseline drift during 1-second integration windows, ensuring sub-0.1% DC voltage accuracy. |
| High-Resolution ADCs | Automotive Sensor Interfaces |
Use Scenario: Data acquisition system digitizing thermocouple and RTD signals at 100kSPS. IC Role / Device Role / Timing Role: References the SAR ADC's internal DAC and external driver op-amps in a multiplexed channel design. Use Value: ±10mA drive capability supports simultaneous buffering for 4-channel 1MΩ input impedance, eliminating external op-amps. | Use Scenario: Tire pressure monitoring system (TPMS) ECU with MEMS pressure sensor and RF transceiver. IC Role / Device Role / Timing Role: Biases the pressure sensor bridge and ADC in the ultra-low-power wake-up measurement cycle. Use Value: 6µA shutdown current extends CR2032 battery life to >10 years while maintaining AEC-Q100 compliance for under-hood deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF101AU/2K5 | 1.25V output, 10ppm/°C max drift, no FILTER pin, 350µA supply current | Lacks Kelvin sensing and noise filter; suited for cost-sensitive non-automotive designs | Select REF101AU/2K5 only if 6ppm/°C drift and 150µA current are non-critical and Kelvin layout is unnecessary. |
| ADR4512B | 1.25V output, 3ppm/°C max drift, 200µA supply current, no enable or filter pins | Higher precision but no power management; requires external enable circuitry for low-power modes | Choose ADR4512B when ultimate long-term stability (<15ppm/1000h) outweighs dynamic power control needs. |
Compared with REF101AU/2K5 and ADR4512B, the MAX6070BAUT12/V+ uniquely combines AEC-Q100 qualification, integrated enable, Kelvin force-sense topology, and user-configurable noise filtering - making it optimal for automotive and industrial systems requiring both precision and power-aware operation.
Availability
MAX6070BAUT12/V+ is available at Aetrix Electronics and suitable for high-accuracy industrial control, precision instrumentation, and automotive sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6070BAUT12/V+ 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 series belongs to Analog Devices' precision voltage reference product line, engineered specifically for applications demanding ultra-low noise, low drift, and robust operation in harsh environments - including factory automation, test equipment, and vehicle subsystems.
FAQ
What is the output voltage tolerance of the MAX6070BAUT12/V+ at room temperature?
The MAX6070BAUT12/V+ has an output voltage tolerance of ±0.08% at +25°C, corresponding to ±1.0mV deviation from the nominal 1.250V output. This specification is guaranteed for the 'B' grade variant and applies under standard test conditions with VIN = 5.0V and no load. The tolerance remains stable across the full –40°C to +125°C operating range due to its low 6ppm/°C temperature coefficient.
Does the MAX6070BAUT12/V+ support Kelvin (4-wire) connections, and how are the pins configured?
Yes, the MAX6070BAUT12/V+ supports Kelvin connections via dedicated OUTF (pin 6) and OUTS (pin 5) terminals. OUTF delivers the regulated 1.25V output, while OUTS provides the sense node that closes the feedback loop at the load. To implement Kelvin sensing, OUTF and OUTS must be shorted together as close as possible to the load, and GNDF (pin 1) must connect to the same local ground point - minimizing voltage error from PCB trace resistance.
How does the FILTER pin on the MAX6070BAUT12/V+ reduce noise, and what capacitor value is recommended?
The FILTER pin on the MAX6070BAUT12/V+ accepts an external 0.1µF capacitor to ground, forming a low-pass filter that reduces high-frequency thermal noise (10Hz–10kHz) from 6µVRMS to 2.5µVRMS. This configuration is validated in the datasheet for optimal wideband performance. Larger capacitors (up to 10µF) may be used for enhanced low-frequency stability, but 0.1µF provides the best balance of noise suppression and settling time (9.6ms to 0.01%).
What is the minimum input voltage required for the MAX6070BAUT12/V+ to maintain regulation at full load?
The MAX6070BAUT12/V+ requires a minimum input voltage of 1.36V to maintain regulation at 10mA load, based on its 110mV typical dropout voltage (VIN – VOUT). However, the specified operational input range is 2.7V to 5.5V - ensuring reliable startup, PSRR performance, and margin against brownout. At 2.7V input, the device delivers full ±10mA sourcing/sinking capability while maintaining ±0.08% accuracy and 6ppm/°C drift.
Is the MAX6070BAUT12/V+ qualified for automotive applications, and what standards does it meet?
Yes, the MAX6070BAUT12/V+ is AEC-Q100 qualified (Grade 1: –40°C to +125°C), meeting stress testing requirements for automotive electronic components including temperature cycling, humidity bias, and ESD robustness. It is explicitly listed in the datasheet's Ordering Information section as qualified for automotive use - making it suitable for engine control, body electronics, and ADAS sensor signal conditioning where reliability under thermal and electrical stress is mandatory.
MAX6070BAUT12/V+ 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):
- 1.25V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.08%
- Temperature Coefficient:
- 8ppm/°C
- Noise - 0.1Hz to 10Hz:
- 3.6µVp-p
- Noise - 10Hz to 10kHz:
- 2.5µVrms
- Voltage - Input:
- 2.7V ~ 5.5V
- Current - Supply:
- 260µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6070BAUT12/V+ FAQ
1.How can I place an order for MAX6070BAUT12/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6070BAUT12/V+ 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 MAX6070BAUT12/V+ reliable?
The price and inventory of MAX6070BAUT12/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6070BAUT12/V+ is usually 5 days.
3.What payment methods are accepted for MAX6070BAUT12/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6070BAUT12/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6070BAUT12/V+?
MAX6070BAUT12/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6070BAUT12/V+ 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 MAX6070BAUT12/V+?
For technical support, including MAX6070BAUT12/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6070BAUT12/V+ requirements.
6.How does Aetrix verify that MAX6070BAUT12/V+ is sourced from the original manufacturer or authorized distributors?
All MAX6070BAUT12/V+ 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 MAX6070BAUT12/V+ meets industry standards.
7.What is the process for return or replacement of MAX6070BAUT12/V+?
All MAX6070BAUT12/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6070BAUT12/V+, 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 MAX6070BAUT12/V+ part is unused and in its original packaging.
Return procedure for MAX6070BAUT12/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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