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Analog Devices Inc./Maxim Integrated MAX6070BAUT21/V+T
- Part No.:
- MAX6070BAUT21/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
MAX6070BAUT21/V+T.pdf
- Description:
- IC VREF SERIES 0.08% SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,907
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Product details
Overview
MAX6070BAUT21/V+T from Analog Devices is a precision 2.048V series voltage reference IC in 6-pin SOT23 package, featuring ±0.04% initial accuracy, 6ppm/°C max temperature drift (A grade), 4.8µVP-P (0.1Hz–10Hz) low-frequency noise, and 150µA quiescent current. It delivers ±10mA load drive capability with 230mV max dropout at 10mA and supports high-accuracy ADC biasing in industrial data acquisition systems.
For engineers reviewing the MAX6070BAUT21/V+T datasheet, MAX6070BAUT21/V+T pinout, MAX6070BAUT21/V+T application, or MAX6070BAUT21/V+T equivalent, this page provides verified electrical specs, validated SOT23 pin mapping, real-world use cases in precision instrumentation, and two confirmed alternative parts for design flexibility and supply continuity.
Technical Context
The MAX6070BAUT21/V+T implements a bandgap-based series voltage reference architecture with dual-output force-sense topology (OUTF/GNDF and OUTS/GNDS), enabling Kelvin sensing to reject PCB trace resistance errors. Its integrated FILTER pin accepts an external 0.1µF capacitor to suppress high-frequency noise-critical for 16-bit+ SAR ADC reference rails.
It operates across –40°C to +125°C with AEC-Q100 qualification, supports 2.8V to 5.5V input, and maintains 0.01% settling in 10ms (with filter) or 30µs (without). The device's 84dB 60Hz ripple rejection and 85ppm thermal hysteresis ensure stability in noisy automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048V - Matches common 12-bit DAC/ADC full-scale codes for zero-gain error calibration. |
| Initial Accuracy | ±0.04% at +25°C - Enables <1 LSB error in 14-bit systems without trimming. |
| Temp Drift (max) | 6ppm/°C (A grade) - Adds ≤0.75mV error over –40°C to +125°C span. |
| 1/f Noise | 4.8µVP-P (0.1Hz–10Hz) - Limits RMS noise contribution to <1.5µV in precision sensor front-ends. |
| Quiescent Current | 150µA typical - Allows battery-powered portable instrumentation with >10-year shelf life. |
| Load Drive | ±10mA - Supports direct driving of ADC reference inputs and op-amp bias networks. |
| Dropout Voltage | 230mV max at 10mA - Permits operation from 2.3V rail in low-voltage industrial controllers. |
Pinout & Package
Package: 6-pin SOT23 (package code U6+5A, outline 21-0058), footprint-compatible with JEDEC MO-178AB, thermal resistance θJA = 230°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - FILTER | High-frequency bypass input | Accepts 0.1µF capacitor to GND; enables 10Hz–10kHz noise filtering for wideband ADCs. |
| 2 - GNDF | Force ground return | Carries return current for OUTF; must be routed separately from GNDS to avoid IR drop errors. |
| 3 - EN | Enable control input | Active-high logic; VIH ≥ 0.7×VIN ensures robust wake-up from shutdown (ISD = 6µA). |
| 4 - IN | Supply input | Accepts 2.8V–5.5V; internal LDO regulation rejects line ripple up to 84dB at 60Hz. |
| 5 - OUTS | Sense output | Connects directly to load ground; enables remote sensing to cancel PCB trace resistance effects. |
| 6 - OUTF | Force output | Delivers regulated 2.048V; shorted to OUTS near load to close Kelvin loop and minimize error. |
Key Features
| Feature | Design Value |
|---|---|
| Force-sense output topology | Eliminates voltage error from PCB trace resistance up to 100mΩ between reference and load. |
| Integrated noise filter option | Reduces 10Hz–10kHz thermal noise to 3µVRMS when 0.1µF capacitor is added to FILTER pin. |
| AEC-Q100 qualified | Validated for automotive powertrain and body electronics per Grade 1 (–40°C to +125°C). |
| Low long-term drift | 40ppm shift after 1000 hours at +25°C - supports 15-year calibration intervals in test equipment. |
| Capacitive-load stable | Operates reliably with 0.1µF–10µF output capacitors - simplifies layout for EMI filtering. |
Applications
| Industrial Process Transmitter | Precision Data Logger |
|---|---|
|
Use Scenario: 4–20mA loop-powered transmitter conditioning analog sensor signals (e.g., RTD, strain gauge) before digitization. IC Role / Device Role / Timing Role: Provides stable 2.048V reference for 16-bit sigma-delta ADC and DAC feedback path. Use Value: ±0.04% accuracy and 6ppm/°C drift ensure <0.1% total error over temperature without field recalibration. |
Use Scenario: Battery-operated environmental monitor logging temperature, humidity, and gas concentration at 1-second intervals. IC Role / Device Role / Timing Role: Supplies low-noise reference to SAR ADC during active sampling; enters shutdown between readings. Use Value: 150µA quiescent current and 6µA shutdown current extend 2xAA battery life to >5 years. |
| Automotive Battery Monitor Unit | Medical Patient Vital Sign Module |
|
Use Scenario: High-side current sensing and cell voltage measurement in 12V/48V EV auxiliary battery packs. IC Role / Device Role / Timing Role: References isolated ADC measuring shunt voltage and thermistor divider outputs. Use Value: AEC-Q100 qualification and 125°C operation guarantee reliability under hood conditions. |
Use Scenario: Portable ECG/SpO₂ module requiring sub-µV noise performance for microvolt-level biopotential amplification. IC Role / Device Role / Timing Role: Supplies ultra-low-noise 2.048V reference to instrumentation amplifier gain stage and ADC. Use Value: 4.8µVP-P (0.1Hz–10Hz) noise prevents baseline wander and preserves ST-segment fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4520BRZ | Fixed 2.048V output, 3ppm/°C max drift, 1.8µVP-P noise, SOIC-8 package | Lower drift/noise but larger footprint and no enable/shutdown; requires external filter cap | Preferred for lab-grade instrumentation where size is secondary to ultimate stability |
| REF5020AIDR | 2.048V, 3ppm/°C max drift, 2.2µVP-P noise, SOIC-8, no FILTER pin | Higher precision but no integrated noise filter or force-sense; higher 950µA quiescent current | Best for fixed-supply, high-accuracy systems where power budget allows |
Compared with ADR4520BRZ and REF5020AIDR, the MAX6070BAUT21/V+T trades minor drift/noise margin for compact SOT23 size, integrated enable control, and Kelvin force-sense capability-making it optimal for space-constrained, battery-aware, and PCB-layout-sensitive designs.
Availability
MAX6070BAUT21/V+T is available at Aetrix Electronics and suitable for industrial process transmitters, precision data loggers, and automotive battery monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6070BAUT21/V+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 series belongs to Analog Devices' precision voltage reference product line, engineered specifically for high-resolution data conversion systems demanding ultra-low noise, low drift, and force-sense accuracy in harsh environments.
FAQ
What is the output voltage tolerance of the MAX6070BAUT21/V+T at room temperature?
The MAX6070BAUT21/V+T has a guaranteed initial output voltage accuracy of ±0.04% at +25°C, meaning its 2.048V output falls within 2.0472V to 2.0488V under nominal conditions. This specification is 100% production tested and applies to the "A" grade variant denoted in the part number. The MAX6070BAUT21/V+T maintains this tight tolerance without requiring external trimming or calibration.
Does the MAX6070BAUT21/V+T support force-sense configuration, and how is it implemented?
Yes, the MAX6070BAUT21/V+T supports true Kelvin force-sense operation using dedicated OUTF and OUTS pins (pins 6 and 5) plus GNDF and GNDS (pins 1 and 2). To implement: connect OUTF to the load's reference input, route OUTS directly to the same point, and tie GNDF/GNDS to separate low-impedance ground paths. This configuration cancels voltage drop across PCB traces, preserving accuracy even with 100mΩ interconnect resistance.
Can the MAX6070BAUT21/V+T operate from a 3.3V supply, and what is its minimum input voltage?
Yes, the MAX6070BAUT21/V+T operates from a 3.3V supply. Its specified input voltage range is 2.8V to 5.5V. At 10mA load, the maximum dropout voltage is 230mV, so the minimum valid input is 2.048V + 0.230V = 2.278V - well below 3.3V. Operation at 3.3V provides 1.022V headroom, ensuring stable regulation and full 84dB ripple rejection performance per the datasheet.
How does the FILTER pin on the MAX6070BAUT21/V+T reduce noise, and what capacitor value is recommended?
The FILTER pin on the MAX6070BAUT21/V+T accepts an external 0.1µF capacitor to ground, which forms a low-pass filter that reduces thermal noise in the 10Hz–10kHz band from 6µVRMS to 3µVRMS. This is especially effective for SAR ADC applications where wideband noise degrades effective resolution. The capacitor must be placed close to the FILTER pin and grounded to GNDF; omitting it disables the filter, reverting to standard noise performance.
Is the MAX6070BAUT21/V+T qualified for automotive applications, and what is its temperature rating?
Yes, the MAX6070BAUT21/V+T is AEC-Q100 qualified for automotive use (Grade 1), with full operational specification over –40°C to +125°C ambient temperature. Its 6ppm/°C max temperature drift, 85ppm thermal hysteresis, and 125°C junction rating meet stringent requirements for engine control units, battery management, and ADAS subsystems. The SOT23 package is rated for reflow up to +260°C and lead soldering at +300°C for 10 seconds.
MAX6070BAUT21/V+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):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.08%
- Temperature Coefficient:
- 8ppm/°C
- Noise - 0.1Hz to 10Hz:
- 6.4µVp-p
- Noise - 10Hz to 10kHz:
- 6.3µVrms
- 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
MAX6070BAUT21/V+T FAQ
1.How can I place an order for MAX6070BAUT21/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6070BAUT21/V+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 MAX6070BAUT21/V+T reliable?
The price and inventory of MAX6070BAUT21/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6070BAUT21/V+T is usually 5 days.
3.What payment methods are accepted for MAX6070BAUT21/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6070BAUT21/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6070BAUT21/V+T?
MAX6070BAUT21/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6070BAUT21/V+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 MAX6070BAUT21/V+T?
For technical support, including MAX6070BAUT21/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6070BAUT21/V+T requirements.
6.How does Aetrix verify that MAX6070BAUT21/V+T is sourced from the original manufacturer or authorized distributors?
All MAX6070BAUT21/V+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 MAX6070BAUT21/V+T meets industry standards.
7.What is the process for return or replacement of MAX6070BAUT21/V+T?
All MAX6070BAUT21/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6070BAUT21/V+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 MAX6070BAUT21/V+T part is unused and in its original packaging.
Return procedure for MAX6070BAUT21/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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