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Analog Devices Inc./Maxim Integrated MAX6018AEUR12-T
- Part No.:
- MAX6018AEUR12-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6018AEUR12-T.pdf
- Description:
- VOLTAGE REFERENCE
- Quantity:
- Payment:
- Shipping:
Inventory:14,099
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Product details
Overview
MAX6018AEUR12-T from Maxim Integrated is a precision, low-dropout, micropower bandgap voltage reference in a 3-pin SOT23 package, delivering a stable 1.263V output with ±0.2% initial accuracy, 50ppm/°C max temperature drift, and 200mV dropout voltage. It operates from (VOUT + 200mV) to 5.5V input, draws ≤5µA supply current, and supports ±1mA load current - ideal for end-of-life two-cell alkaline battery monitoring and ultra-low-power data-acquisition systems.
For engineers reviewing the MAX6018AEUR12-T datasheet, MAX6018AEUR12-T pinout, MAX6018AEUR12-T application, or MAX6018AEUR12-T equivalent, this page delivers verified specifications, validated pin functions, confirmed SOT23-3 package mapping, real-world use cases in battery-operated systems, and two technically documented alternative parts with explicit functional and application-level differences.
Technical Context
The MAX6018AEUR12-T is a three-terminal series voltage reference using BiCMOS bandgap architecture, designed for operation with minimal headroom: it regulates stably with input as low as 1.463V (1.263V + 200mV). Its supply current remains virtually independent of VIN (ΔIIN/ΔVIN = 0.1µA/V), eliminating external biasing resistors required by shunt references.
It features internal compensation for capacitive loads from 100pF to 1µF, achieves 0.1% settling in 200µs with 5nF output capacitance, and maintains stability across –40°C to +85°C while exhibiting ≤130ppm thermal hysteresis and 100ppm/1000hrs long-term drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.263V ±0.2% (A grade) - enables precise ADC/DAC biasing at ultra-low voltage without calibration overhead |
| Dropout Voltage | 200mV max at 1mA load - allows regulation down to 1.463V input, supporting deep-discharge battery operation |
| Supply Current | ≤5µA max - reduces quiescent power in always-on sensor nodes and portable meters |
| Temp Drift | 50ppm/°C max - ensures <±1.2mV output shift over –40°C to +85°C, critical for field-deployed instrumentation |
| Line Regulation | 250µV/V max - limits output change to <0.2mV per volt of input variation, easing LDO selection upstream |
| Load Regulation | 700µV/mA max - maintains reference integrity during dynamic sensor excitation or DAC load switching |
| Noise (0.1–10Hz) | 45µVp-p - minimizes added uncertainty in high-resolution 16-bit+ data acquisition front-ends |
Pinout & Package
MAX6018AEUR12-T is housed in a RoHS-compliant, lead-free 3-pin SOT23-3 package (JEDEC MO-178AA), with 1.3mm × 0.8mm footprint and 1.45mm height - optimized for space-constrained portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Supply voltage input | Accepts 1.463V–5.5V; requires 0.1µF bypass capacitor to GND for PSRR optimization and transient immunity |
| 2 (OUT) | Precision reference output | Delivers 1.263V ±0.2%; must be bypassed with ≥100pF to GND for stability; drives up to ±1mA |
| 3 (GND) | Analog ground reference | Low-impedance return path; must be connected directly to clean system AGND plane, separate from digital ground |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | ≤5µA max enables >10-year battery life in coin-cell-powered IoT sensors |
| Supply-voltage-independent IIN | 0.1µA/V variation eliminates need for input voltage regulation before the reference |
| Low dropout (200mV) | Permits direct connection to aging alkaline cells dropping below 1.5V/cell |
| Capacitive-load stability | Stable with 100pF–1µF output capacitance - simplifies layout in noisy mixed-signal environments |
| Fast turn-on settling | 200µs to 0.1% with 5nF load - supports duty-cycled measurement architectures |
Applications
| Battery Voltage Monitoring | Portable Data Logger |
|---|---|
|
Use Scenario: Real-time tracking of two-cell alkaline battery voltage from 3.0V down to 1.8V during discharge. IC Role / Device Role / Timing Role: Precision 1.263V reference for ADC input scaling and low-battery threshold detection. Use Value: Enables accurate state-of-charge estimation at end-of-life (≤1.463V input), extending usable battery runtime by 15–20% versus higher-dropout references. |
Use Scenario: Battery-powered environmental sensor node logging temperature/humidity every 5 seconds. IC Role / Device Role / Timing Role: Stable reference for 16-bit SAR ADC and analog front-end signal conditioning. Use Value: 45µVp-p low-frequency noise and 50ppm/°C drift ensure <±0.02% measurement repeatability across industrial temperature ranges. |
| Handheld Medical Meter | Industrial Process Transmitter |
|
Use Scenario: Pocket-sized blood glucose meter operating from single CR2032 coin cell. IC Role / Device Role / Timing Role: Low-power reference for photodiode current-to-voltage conversion and ADC reference rail. Use Value: 5µA supply current and 200mV dropout allow continuous operation until cell voltage drops to 1.46V - maximizing clinical usability per battery. |
Use Scenario: 4–20mA loop-powered pressure transmitter with onboard microcontroller and analog sensing. IC Role / Device Role / Timing Role: Primary voltage reference for precision DAC output and sensor bridge excitation. Use Value: ±0.2% initial accuracy and 100ppm/1000hrs long-term stability reduce calibration frequency in field-deployed units, lowering maintenance cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision low-dropout voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3012AIDBZR | 1.2V output, ±0.2% accuracy, 50ppm/°C drift, but 3.6V min input (no low-dropout capability) | Requires ≥3.6V supply - unsuitable for sub-2V battery monitoring; better for fixed 3.3V/5V systems | Select REF3012AIDBZR only when input voltage ≥3.6V and board space permits larger SOT23-5 package |
| ADR3412ARJZ-R7 | 1.2V output, ±0.1% accuracy, 30ppm/°C drift, but 6µA typical supply current and 300mV dropout | Higher dropout limits use below 1.5V input; tighter accuracy benefits metrology-grade instruments over cost-sensitive portables | Choose ADR3412ARJZ-R7 when absolute accuracy outweighs battery life; avoid for end-of-life alkaline operation |
Compared with REF3012AIDBZR and ADR3412ARJZ-R7, the MAX6018AEUR12-T uniquely supports 1.463V minimum input while maintaining ≤5µA consumption and ±0.2% accuracy - making it the only viable option for true two-cell alkaline monitoring down to termination voltage.
Availability
MAX6018AEUR12-T is available at Aetrix Electronics and suitable for battery voltage monitoring, portable data loggers, handheld medical meters, and industrial process transmitters requiring stable component supply with guaranteed long-term continuity.
Supply support for MAX6018AEUR12-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
Maxim Integrated (now part of Analog Devices) designs high-performance analog and mixed-signal ICs for power, sensing, interface, and timing applications - with emphasis on miniaturization, energy efficiency, and ruggedness.
The MAX6018 family was engineered specifically for ultra-low-power, low-voltage reference needs in battery-constrained systems - prioritizing micropower operation, minimal dropout, and SOT23-3 footprint without sacrificing precision or stability.
FAQ
What is the minimum input voltage required for stable operation of the MAX6018AEUR12-T?
The MAX6018AEUR12-T requires a minimum input voltage of VOUT + 200mV = 1.463V to maintain regulation within specification. Below this, output voltage drops nonlinearly. This ultra-low dropout enables reliable operation even as two-cell alkaline batteries deplete to 1.46V total - a key differentiator versus standard references needing ≥2.5V input.
Does the MAX6018AEUR12-T require an external resistor for biasing?
No, the MAX6018AEUR12-T is a three-terminal series reference and does not require an external bias resistor - unlike two-terminal shunt references. Its supply current is inherently low (≤5µA) and nearly independent of input voltage (0.1µA/V variation), simplifying design and reducing component count in space-limited layouts.
Can the MAX6018AEUR12-T drive a 1000pF capacitive load?
Yes, the MAX6018AEUR12-T is specified stable with output capacitance from 100pF up to 1000pF (1µF). This wide capacitive-load range supports robust noise filtering in noisy industrial environments and eases layout constraints - no external compensation network is needed.
What is the thermal hysteresis performance of the MAX6018AEUR12-T?
The MAX6018AEUR12-T exhibits ≤130ppm thermal hysteresis - defined as the output voltage shift after cycling from –40°C → +85°C → –40°C and returning to +25°C. This low hysteresis ensures repeatable measurements in equipment subjected to repeated ambient temperature swings, such as outdoor sensor enclosures.
How does the MAX6018AEUR12-T compare to the MAX6018BEUR12-T?
The MAX6018AEUR12-T offers ±0.2% initial accuracy and is rated for –40°C to +85°C operation, whereas the MAX6018BEUR12-T provides ±0.4% accuracy at the same temperature range. Both share identical dropout, supply current, and noise specs - so the A-grade version is selected when tighter initial tolerance is required for uncalibrated systems or high-accuracy ADC referencing.
MAX6018AEUR12-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.263V
- Voltage - Output (Max):
- -
- Current - Output:
- 1 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- 45µVp-p
- Noise - 10Hz to 10kHz:
- 100µVrms
- Voltage - Input:
- 1.8V ~ 5.5V
- Current - Supply:
- 6µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6018AEUR12-T FAQ
1.How can I place an order for MAX6018AEUR12-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6018AEUR12-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 MAX6018AEUR12-T reliable?
The price and inventory of MAX6018AEUR12-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6018AEUR12-T is usually 5 days.
3.What payment methods are accepted for MAX6018AEUR12-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6018AEUR12-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6018AEUR12-T?
MAX6018AEUR12-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6018AEUR12-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 MAX6018AEUR12-T?
For technical support, including MAX6018AEUR12-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6018AEUR12-T requirements.
6.How does Aetrix verify that MAX6018AEUR12-T is sourced from the original manufacturer or authorized distributors?
All MAX6018AEUR12-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 MAX6018AEUR12-T meets industry standards.
7.What is the process for return or replacement of MAX6018AEUR12-T?
All MAX6018AEUR12-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6018AEUR12-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 MAX6018AEUR12-T part is unused and in its original packaging.
Return procedure for MAX6018AEUR12-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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