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Analog Devices Inc./Maxim Integrated MAX6070AAUT21+T
- Part No.:
- MAX6070AAUT21+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
MAX6070AAUT21+T.pdf
- Description:
- IC VREF SERIES 0.04% SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,056
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Product details
Overview
MAX6070AAUT21+T from Analog Devices is a precision 2.048V series voltage reference IC in a 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 supports ±10mA load sourcing/sinking and is optimized for high-resolution ADCs and industrial process control systems requiring stable, low-noise reference voltage.
For engineers reviewing the MAX6070AAUT21+T datasheet, MAX6070AAUT21+T pinout, MAX6070AAUT21+T application, or MAX6070AAUT21+T equivalent, key selection criteria include output voltage tolerance at temperature extremes, 1/f noise performance in precision sensor signal chains, dropout voltage under 10mA load, filter-capable architecture for wideband noise suppression, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The MAX6070AAUT21+T implements a bandgap-based series voltage reference with dual-output force-sense architecture (OUTF/OUTS) to reject PCB trace resistance effects and maintain regulation accuracy at the load. Its integrated FILTER pin enables external 0.1µF capacitor connection to suppress high-frequency noise-critical for 16-bit+ data converters.
It operates across –40°C to +125°C with guaranteed 2.048V output, 110–230mV dropout at 10mA, and 84dB ripple rejection at 60Hz. The device enters shutdown mode drawing ≤6µA when EN is low, enabling power-sensitive portable instrumentation designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048V - matches common 12-bit DAC/ADC full-scale codes and simplifies ratio-metric system design. |
| Initial Accuracy | ±0.04% at +25°C - ensures <±0.82mV absolute error without calibration in factory-set systems. |
| Temp Drift (max) | 6ppm/°C - contributes ≤±0.25mV error over –40°C to +125°C ambient range. |
| 1/f Noise | 4.8µVP-P (0.1Hz–10Hz) - enables sub-LSB stability in precision weigh scales and strain gauge bridges. |
| Quiescent Current | 150µA typical - allows battery operation >1 year in 10µA-sleep-cycle IoT sensor nodes. |
| Load Current | ±10mA - drives 10kΩ minimum load directly, eliminating need for external buffer in most DAQ front-ends. |
| Dropout Voltage | 110–230mV at 10mA - supports operation from 2.8V supply rails, compatible with Li-ion and 3.3V LDO outputs. |
Pinout & Package
Package: 6-pin SOT23 (package code U6+5A, outline 21-0058), footprint-compatible with JEDEC MS-012AC, thermal resistance θJA = 230°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FILTER (Pin 1) | Noise filter input | Accepts 0.1µF capacitor to GND to attenuate >10kHz switching noise-required for optimal wideband PSRR. |
| GNDF (Pin 2) | Force ground | Provides dedicated ground return path for internal reference core; must be connected to clean analog ground plane. |
| EN (Pin 3) | Enable control | Active-high logic input (VIH ≥0.7×VIN); enables fast 10ms turn-on settling with 0.01% accuracy. |
| IN (Pin 4) | Supply input | Accepts 2.8V–5.5V input; internal regulation maintains stable 2.048V output despite rail variation. |
| OUTS (Pin 5) | Sense output | Feedback node for remote sensing-connect directly to load ground to compensate for trace IR drop. |
| OUTF (Pin 6) | Force output | Main reference output; bypass with 0.1–10µF capacitor to GNDF for stability and noise filtering. |
Key Features
| Feature | Design Value |
|---|---|
| Force-sense output architecture | Compensates for up to 100mΩ PCB trace resistance between IC and load, preserving output accuracy at point-of-use. |
| Integrated noise filter pin | Enables 30nV/√Hz spectral density at 1kHz when 0.1µF CFILTER is used-reducing wideband noise by >50% vs. unfiltered mode. |
| AEC-Q100 qualified | Rated for automotive applications (Grade 1: –40°C to +125°C), including engine control modules and ADAS sensor interfaces. |
| Low long-term drift | 40ppm shift after 1000 hours at +25°C - ensures calibration validity over multi-year industrial equipment service life. |
| Capacitive-load stability | Stable with 0.1–10µF output capacitance - accommodates ceramic, tantalum, or polymer caps without oscillation risk. |
Applications
| High-Resolution Data Acquisition | Precision Current Sources |
|---|---|
Use Scenario: 24-bit delta-sigma ADC in laboratory-grade digital multimeter measuring µV-level thermocouple signals. IC Role / Device Role / Timing Role: Provides ultra-low-noise, drift-stable reference for ADC's internal conversion core and external PGA gain-setting resistors. Use Value: 4.8µVP-P 1/f noise and 6ppm/°C drift ensure <0.0015% measurement uncertainty over full operating temperature range. | Use Scenario: Programmable 4–20mA transmitter for pressure transducers in hazardous-area oilfield instrumentation. IC Role / Device Role / Timing Role: Sets precise current-loop compliance voltage via op-amp feedback network; senses loop voltage remotely using OUTS/OUTF pair. Use Value: Force-sense architecture eliminates 25mV error from 2.5Ω loop wiring resistance, maintaining 0.1% current accuracy. |
| Automotive Sensor Signal Conditioning | Industrial Process Controller Reference |
Use Scenario: Front-end reference for MEMS accelerometer in airbag deployment ECU operating at –40°C to +105°C. IC Role / Device Role / Timing Role: Supplies bias voltage to analog front-end and reference for diagnostic ADC monitoring supply integrity. Use Value: AEC-Q100 qualification and 6ppm/°C drift guarantee functional safety compliance per ISO 26262 ASIL-B requirements. | Use Scenario: Master reference in PLC analog I/O module converting 4–20mA inputs to digital values for DCS systems. IC Role / Device Role / Timing Role: Serves as system-wide voltage standard for multiple isolated ADC channels and calibration EEPROM references. Use Value: ±0.04% initial accuracy and 85ppm thermal hysteresis enable single-point factory calibration valid for 5+ years of continuous operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5020IDR | 2.048V, 3ppm/°C max drift, 3.8µVP-P noise, but 950µA IQ; no FILTER pin or force-sense outputs. | Higher accuracy at cost of 6× higher supply current; unsuitable for battery-powered or space-constrained layouts. | Select REF5020IDR only when drift budget is <3ppm/°C and board area permits larger SOIC-8 package. |
| ADR4520BRZ | 2.048V, 3ppm/°C max drift, 5.5µVP-P noise, 950µA IQ, includes trim pin; no enable or filter functionality. | Lacks shutdown mode and noise-filtering capability-requires external circuitry for power gating or HF noise suppression. | Choose ADR4520BRZ for metrology-grade lab equipment where ultimate drift performance outweighs power and integration trade-offs. |
Compared with REF5020IDR and ADR4520BRZ, the MAX6070AAUT21+T delivers best-in-class noise-efficiency balance (4.8µVP-P/150µA) and integrated force-sense architecture-enabling accurate remote sensing without layout-compromising routing or additional components.
Availability
MAX6070AAUT21+T is available at Aetrix Electronics and suitable for high-resolution data acquisition, precision current sources, automotive sensor signal conditioning, and industrial process controller reference applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6070AAUT21+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 applications demanding ultra-low noise, tight initial accuracy, and robust thermal stability-including test & measurement, medical instrumentation, and automotive ADAS subsystems.
FAQ
What is the output voltage tolerance of the MAX6070AAUT21+T over temperature?
The MAX6070AAUT21+T guarantees ±0.04% initial accuracy at +25°C and a maximum temperature coefficient of 6ppm/°C (A grade) over –40°C to +125°C. This results in a total output voltage deviation of ≤±0.25mV across its full operating range, calculated as 2.048V × 6ppm/°C × 165°C span.
Does the MAX6070AAUT21+T require an external capacitor on the FILTER pin?
Yes-the FILTER pin of the MAX6070AAUT21+T must be connected to ground through a 0.1µF capacitor to achieve specified 30nV/√Hz noise spectral density and optimal high-frequency PSRR. Leaving FILTER unconnected degrades wideband noise performance and reduces ripple rejection above 10kHz.
Can the MAX6070AAUT21+T drive a 10kΩ load directly?
Yes-the MAX6070AAUT21+T can source or sink up to ±10mA while maintaining regulation, supporting direct drive of loads down to 204.8Ω (2.048V/10mA). A 10kΩ load draws only 205µA, well within specification, and benefits from the device's 75–125µV/mA load regulation performance.
How does the force-sense (OUTS/OUTF) architecture improve accuracy in the MAX6070AAUT21+T?
The MAX6070AAUT21+T uses separate OUTS (sense) and OUTF (force) pins to close the feedback loop at the load rather than at the IC package. This compensates for voltage drop across PCB traces-e.g., 50mΩ resistance causes only 10mV error at 200mA, which the force-sense topology actively corrects to preserve <0.005% output accuracy at the destination node.
Is the MAX6070AAUT21+T qualified for automotive applications?
Yes-the MAX6070AAUT21+T is AEC-Q100 qualified (Grade 1: –40°C to +125°C) and specified for automotive use. Its 6ppm/°C drift, 4.8µVP-P noise, and robust ESD tolerance (±2kV HBM) meet stringent requirements for engine control units, battery management systems, and radar sensor signal chains.
MAX6070AAUT21+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:
- ±0.04%
- Temperature Coefficient:
- 6ppm/°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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6070AAUT21+T FAQ
1.How can I place an order for MAX6070AAUT21+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6070AAUT21+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 MAX6070AAUT21+T reliable?
The price and inventory of MAX6070AAUT21+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6070AAUT21+T is usually 5 days.
3.What payment methods are accepted for MAX6070AAUT21+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6070AAUT21+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6070AAUT21+T?
MAX6070AAUT21+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6070AAUT21+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 MAX6070AAUT21+T?
For technical support, including MAX6070AAUT21+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6070AAUT21+T requirements.
6.How does Aetrix verify that MAX6070AAUT21+T is sourced from the original manufacturer or authorized distributors?
All MAX6070AAUT21+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 MAX6070AAUT21+T meets industry standards.
7.What is the process for return or replacement of MAX6070AAUT21+T?
All MAX6070AAUT21+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6070AAUT21+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 MAX6070AAUT21+T part is unused and in its original packaging.
Return procedure for MAX6070AAUT21+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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