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Analog Devices Inc./Maxim Integrated MAX6070BAUT18+T
- Part No.:
- MAX6070BAUT18+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
MAX6070BAUT18+T.pdf
- Description:
- IC VREF SERIES 0.08% SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,913
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Product details
Overview
MAX6070BAUT18+T from Analog Devices is a precision 1.8V 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 1/f noise (0.1Hz–10Hz), 150µA quiescent current, and supports ±10mA load sourcing/sinking - ideal for high-resolution ADCs and industrial sensor signal chains.
For engineers reviewing the MAX6070BAUT18+T datasheet, MAX6070BAUT18+T pinout, MAX6070BAUT18+T application, or MAX6070BAUT18+T equivalent, key selection criteria include output voltage stability under thermal cycling, 1/f noise performance at sub-10Hz frequencies, dropout voltage at full load, filter-capacitor-enabled wideband noise suppression, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The MAX6070BAUT18+T implements a bandgap-based series voltage reference architecture with dual-output force-sense topology (OUTF/OUTS) to reject PCB trace resistance errors. Its integrated FILTER pin accepts an external 0.1µF capacitor to suppress high-frequency noise above 10Hz - a feature absent in the MAX6071 variant.
It operates across –40°C to +125°C with guaranteed 2.7V to 5.5V input supply range, 110–230mV dropout at 10mA load, and maintains 84dB ripple rejection at 60Hz. The device enters shutdown mode with 6µA ISD, enabling power-sensitive portable instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.800V ±0.08% at +25°C - matches common LDO and ADC reference rails without scaling resistors. |
| Temp Drift (max) | 6ppm/°C (A grade) - ensures ≤±0.072% output variation over –40°C to +125°C industrial range. |
| 1/f Noise | 4.8µVP-P (0.1Hz–10Hz) - enables <20-bit effective resolution in precision data acquisition systems. |
| Quiescent Current | 150µA typical - allows battery operation >1 year in 10µA-sleep-cycle IoT sensor nodes. |
| Load Current | ±10mA sourcing/sinking - drives 10kΩ DAC reference inputs or 100Ω precision current sources directly. |
| Dropout Voltage | 110–230mV at 10mA - supports operation from 2.0V supply when VOUT = 1.8V, critical for low-voltage microcontroller systems. |
| Ripple Rejection | 84dB at 60Hz - rejects AC-coupled noise from switching power supplies feeding analog front-ends. |
Pinout & Package
Package: 6-pin SOT23 (U6+5/U6+5A), 2.9mm × 1.6mm footprint, 1.45mm height, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FILTER | High-frequency bypass input | Accepts 0.1µF capacitor to GND to reduce thermal noise above 10Hz; left floating disables filter function. |
| GNDF | Force ground return | Carries reference output current return path; must be routed separately from noisy system ground to avoid error injection. |
| EN | Enable control input | Active-high logic (VIH ≥ 0.7×VIN); enables 6ms turn-on settling to 0.01% with CFILTER = 0.1µF. |
| IN | Supply input | Accepts 2.7–5.5V; internal regulation rejects line variations up to 145µV/V (typ) over full temperature range. |
| OUTS | Sense output | Connects directly to load ground point; compensates for voltage drop across PCB traces between OUTF and load. |
| OUTF | Force output | Delivers regulated 1.8V; must be shorted to OUTS near the load to close Kelvin-sense loop and eliminate IR errors. |
Key Features
| Feature | Design Value |
|---|---|
| Force-sense output topology | Eliminates voltage error from PCB trace resistance up to 100mΩ, preserving accuracy in high-current or long-trace layouts. |
| Integrated noise filter option | Reduces 10Hz–10kHz thermal noise by 50% (to 6.3µVRMS) when 0.1µF capacitor is placed on FILTER pin. |
| AEC-Q100 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces per Grade 1 (-40°C to +125°C). |
| Low 150µA supply current | Enables always-on reference operation in energy-harvesting systems where average current budget is <1µA. |
| 0.04% initial accuracy (A grade) | Reduces calibration overhead in factory test fixtures; eliminates need for post-assembly trimming in cost-sensitive industrial sensors. |
Applications
| High-Resolution Data Acquisition | Precision Industrial Sensor Conditioning |
|---|---|
Use Scenario: 24-bit delta-sigma ADC (e.g., ADS1262) measuring thermocouple or strain gauge outputs in PLC analog input modules. IC Role / Device Role / Timing Role: Provides stable 1.8V reference for ADC internal PGA and conversion core, rejecting supply ripple and thermal drift. Use Value: Enables true 20.5-bit ENOB by limiting reference-induced noise to <0.5 LSB and drift to <1 LSB over full temperature range. | Use Scenario: 4–20mA transmitter with HART modulation in hazardous-area process transmitters (e.g., pressure, flow). IC Role / Device Role / Timing Role: Supplies excitation voltage and ADC reference for loop-powered sensor signal chain operating from 12–42V DC supply. Use Value: Maintains 0.1% total unadjusted error (TUE) over –40°C to +85°C despite 300mV dropout headroom and 150µA quiescent draw. |
| Automotive Battery Monitoring Units | Portable Medical Instrumentation |
Use Scenario: Cell voltage monitoring in 12S Li-ion battery packs for EV traction inverters and onboard chargers. IC Role / Device Role / Timing Role: Reference for multiplexed 16-bit SAR ADC sampling individual cell voltages with <1mV absolute accuracy. Use Value: AEC-Q100 qualification ensures reliability under 10,000h lifetime at +105°C junction temperature; 6ppm/°C drift prevents SOC miscalculation. | Use Scenario: Portable ECG monitor with ultra-low-power MCU (e.g., MSP430FR5994) and 20-bit ADC for clinical-grade waveform capture. IC Role / Device Role / Timing Role: Low-noise 1.8V reference for analog front-end amplifiers and ADC, powered from coin-cell or energy-harvesting source. Use Value: 4.8µVP-P 1/f noise ensures baseline wander <10µV RMS over 0.05–150Hz bandwidth, meeting ANSI/AAMI EC11 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6071AUT18+T | No FILTER pin; higher 10Hz–10kHz noise (8.6µVRMS vs. 6.3µVRMS with filter); identical accuracy/drift specs. | Lacks wideband noise filtering capability; unsuitable for RF-sensitive or high-speed sampling applications. | Select MAX6071AUT18+T only when board space prohibits adding 0.1µF capacitor or when 1/f noise dominates system error budget. |
| ADR4518BRZ | Higher initial accuracy (±0.02%), lower drift (3ppm/°C max), but no enable/shutdown and 450µA IQ; SOIC-8 package. | Not suitable for space-constrained or battery-powered designs; lacks digital control for power cycling. | Choose ADR4518BRZ when ultimate long-term stability and lowest drift outweigh size and power constraints in benchtop instrumentation. |
Compared with MAX6071AUT18+T, the MAX6070BAUT18+T provides superior wideband noise suppression via its dedicated FILTER pin, while ADR4518BRZ trades off programmability and low power for higher static accuracy - making MAX6070BAUT18+T optimal for automotive and portable precision systems requiring both low 1/f noise and dynamic power control.
Availability
MAX6070BAUT18+T is available at Aetrix Electronics and suitable for high-accuracy industrial and process control, precision instrumentation, and automotive battery monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6070BAUT18+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 MAX6070/MAX6071 family targets high-precision voltage reference needs in space-constrained, low-power, and thermally demanding applications - emphasizing ultra-low noise, AEC-Q100 compliance, and force-sense accuracy preservation.
FAQ
What is the maximum load current supported by the MAX6070BAUT18+T?
The MAX6070BAUT18+T supports ±10mA of continuous load current - sourcing up to +10mA into capacitive or resistive loads and sinking up to –10mA from them. This capability allows direct driving of precision DAC references, op-amp bias networks, and current-source circuits without external buffering. Performance remains within specification across the full –40°C to +125°C temperature range and 2.7V to 5.5V input supply.
How does the FILTER pin on the MAX6070BAUT18+T improve noise performance?
The FILTER pin on the MAX6070BAUT18+T accepts an external 0.1µF capacitor to ground, reducing thermal noise in the 10Hz–10kHz band from 8.6µVRMS (unfiltered) to 6.3µVRMS. This 27% reduction directly improves SNR in high-speed ADC applications and suppresses switching noise coupling from nearby DC-DC converters. The MAX6070BAUT18+T's FILTER functionality is unique to the MAX6070 series and not present in the MAX6071 variant.
Is the MAX6070BAUT18+T AEC-Q100 qualified, and what grade does it meet?
Yes, the MAX6070BAUT18+T is AEC-Q100 qualified and meets Grade 1 requirements (–40°C to +125°C ambient operating temperature). This qualification covers stress testing for accelerated environmental, mechanical, and electrical reliability - confirming suitability for automotive powertrain, chassis, and ADAS applications. The qualification applies specifically to the SOT23-packaged MAX6070BAUT18+T, not wafer-level variants.
What is the purpose of the separate GNDF and OUTS pins on the MAX6070BAUT18+T?
The GNDF (Ground Force) and OUTS (Output Sense) pins implement a 4-wire Kelvin connection: GNDF carries the reference output current return path, while OUTS senses voltage at the remote load ground point. Shorting OUTF to OUTS near the load closes the sense loop, eliminating errors caused by voltage drop across PCB traces or connectors - preserving ±0.08% accuracy even with 100mΩ trace resistance. This topology is essential for metrology-grade measurement systems.
What is the typical turn-on settling time for the MAX6070BAUT18+T with the FILTER capacitor installed?
With a 0.1µF capacitor on the FILTER pin, the MAX6070BAUT18+T achieves 0.01% output settling in 6.2ms after power-up (VIN applied), as measured at VOUT = 1.8V with COUT = 0.1µF. This settling behavior is consistent across all output voltage options in the MAX6070 family and is specified under TA = +25°C with VIN = +5.0V. The ENABLE pin exhibits identical 6.2ms settling when asserted high with the same filter configuration.
MAX6070BAUT18+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):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.08%
- Temperature Coefficient:
- 8ppm/°C
- Noise - 0.1Hz to 10Hz:
- 6µVp-p
- Noise - 10Hz to 10kHz:
- 5µVrms
- 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
MAX6070BAUT18+T FAQ
1.How can I place an order for MAX6070BAUT18+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6070BAUT18+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 MAX6070BAUT18+T reliable?
The price and inventory of MAX6070BAUT18+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6070BAUT18+T is usually 5 days.
3.What payment methods are accepted for MAX6070BAUT18+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6070BAUT18+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6070BAUT18+T?
MAX6070BAUT18+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6070BAUT18+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 MAX6070BAUT18+T?
For technical support, including MAX6070BAUT18+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6070BAUT18+T requirements.
6.How does Aetrix verify that MAX6070BAUT18+T is sourced from the original manufacturer or authorized distributors?
All MAX6070BAUT18+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 MAX6070BAUT18+T meets industry standards.
7.What is the process for return or replacement of MAX6070BAUT18+T?
All MAX6070BAUT18+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6070BAUT18+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 MAX6070BAUT18+T part is unused and in its original packaging.
Return procedure for MAX6070BAUT18+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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