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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:
- IC VREF SERIES 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,801
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Product details
Overview
The MAX6018AEUR12+T from Maxim Integrated is a precision, micropower, low-dropout bandgap voltage reference in a 3-pin SOT23 package. It delivers a stable 1.263V output with ±0.2% initial accuracy, 50ppm/°C max temperature drift, and operates from (VOUT + 200mV) to 5.5V input-enabling use in two-cell alkaline battery-monitoring systems at end-of-life voltage.
For engineers reviewing the MAX6018AEUR12+T datasheet, MAX6018AEUR12+T pinout, MAX6018AEUR12+T application, or MAX6018AEUR12+T equivalent, key selection criteria include ultra-low 5μA max supply current, 200mV dropout, load regulation of 700μV/mA, and guaranteed stability with 100pF–1μF output capacitance.
Technical Context
The MAX6018AEUR12+T uses a bandgap-based architecture to generate a precise 1.263V reference, with internal compensation ensuring stability across temperature and load. Its three-terminal configuration (IN, OUT, GND) eliminates external resistor requirements typical of shunt references.
It achieves supply current independence (ΔIIN/ΔVIN = 0.1μA/V) and maintains regulation down to 1.463V input (1.263V + 200mV), supporting operation under brown-out conditions in battery-powered data-acquisition systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.263V ±0.2% (A grade) - tight tolerance enables high-resolution ADC/DAC biasing without calibration. |
| Supply Current | ≤5μA (max) - extends battery life in always-on sensor nodes and portable instrumentation. |
| Dropout Voltage | 200mV (max at 1mA) - allows operation from 1.463V input, critical for two-cell alkaline systems at end-of-life. |
| Temp Drift | 50ppm/°C (max) - ensures ≤0.63mV output shift over –40°C to +85°C, suitable for industrial-grade measurement. |
| Load Regulation | 700μV/mA (max sourcing) - maintains reference integrity under varying ADC input bias or DAC load currents. |
| Line Regulation | 250μV/V (max) - rejects supply ripple and battery sag, preserving accuracy during dynamic load transitions. |
| Noise (0.1–10Hz) | 45μVp-p - low flicker noise supports precision low-frequency signal conditioning. |
Pinout & Package
Package: 3-pin SOT23-3 (U3+1 outline), surface-mount, RoHS-compliant, footprint per land pattern 90-0179.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Supply Voltage Input | Bypass with 0.1μF capacitor to GND; accepts 1.463V–5.5V input; minimum headroom = 200mV above VOUT. |
| 2 (OUT) | Reference Voltage Output | Delivers 1.263V ±0.2%; requires ≥100pF bypass to GND for stability; drives up to 1mA source/sink load. |
| 3 (GND) | Ground Reference | Low-impedance return path; must be connected directly to system ground plane to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 5μA max supply current enables >10-year battery life in coin-cell–powered IoT sensors. |
| Low Dropout | 200mV dropout allows reliable regulation even as two-cell alkaline batteries decay below 1.5V/cell. |
| Capacitive Load Stability | Stable with 100pF–1μF output capacitance-simplifies layout and eliminates need for series resistance. |
| Supply-Independent Current | 0.1μA/V variation ensures consistent quiescent power across battery voltage range, easing power budgeting. |
| Turn-On Settling | 200μs to 0.1% with 5nF load-supports fast wake-up in duty-cycled measurement systems. |
Applications
| Battery-Monitoring Systems | Data-Acquisition Front-Ends |
|---|---|
Use Scenario: Monitoring voltage of two-series alkaline cells in handheld medical devices during deep discharge. IC Role / Device Role / Timing Role: Precision voltage reference for ADC input scaling and battery state-of-charge calculation. Use Value: 1.263V output with ±0.2% accuracy and 50ppm/°C drift ensures <0.5% SoC error across –20°C to +60°C operating range. | Use Scenario: Providing reference for 16-bit SAR ADC in portable environmental sensor node. IC Role / Device Role / Timing Role: Low-noise, low-drift reference enabling full-scale resolution without gain/offset calibration. Use Value: 45μVp-p (0.1–10Hz) noise and 700μV/mA load regulation preserve effective number of bits (ENOB) under dynamic sensor loading. |
| Industrial Process Sensors | Low-Power IoT Edge Nodes |
Use Scenario: Biasing bridge transducers in battery-powered pressure transmitters deployed in remote field locations. IC Role / Device Role / Timing Role: Stable excitation reference for ratiometric measurement, rejecting supply and temperature variations. Use Value: 250μV/V line regulation and 50ppm/°C drift minimize measurement drift caused by solar-heated enclosures or battery voltage sag. | Use Scenario: Powering reference rail for ultra-low-power microcontroller ADC during periodic wake-up sampling cycles. IC Role / Device Role / Timing Role: Micropower reference enabling sub-μA average system current in sleep/wake architectures. Use Value: 5μA max supply current and 200μs turn-on time allow full ADC conversion within 1ms wake window, minimizing active time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision micropower voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6029AEUR12+T | Same 1.263V output, ±0.2% accuracy, but 3.5μA max supply current and 30ppm/°C drift; SOT23-3 package. | Lower drift and current suit higher-accuracy, longer-life battery systems; not qualified for –40°C operation. | Select when tighter tempco and lower IQ outweigh extended temperature range requirement. |
| ADR3412ARJZ-R7 | 1.200V output, ±0.1% initial accuracy, 30ppm/°C drift, 6μA max IQ, SOT23-3; requires ≥2.5V input. | Higher accuracy but incompatible with sub-1.5V input; better noise performance (30μVp-p) but higher dropout (~300mV). | Choose only if system input stays ≥2.5V and 1.200V output suffices; not viable for two-cell alkaline end-of-life use. |
Compared with MAX6018AEUR12+T, MAX6029AEUR12+T offers improved drift and quiescent current but sacrifices –40°C operation, while ADR3412ARJZ-R7 provides superior accuracy and noise at the cost of higher minimum input voltage and dropout-making MAX6018AEUR12+T uniquely suited for ultra-low-voltage, wide-temperature battery monitoring.
Availability
MAX6018AEUR12+T is available at Aetrix Electronics and suitable for battery-monitoring systems, portable data-acquisition front-ends, and industrial process sensors requiring stable component supply with guaranteed long-term availability and traceable sourcing.
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 precision analog and mixed-signal ICs for power, sensing, and interface applications in industrial, medical, and consumer systems.
The MAX6018 family targets ultra-low-power, high-accuracy voltage referencing in space-constrained, battery-operated equipment where supply headroom and long service life are critical design constraints.
FAQ
What is the exact output voltage and initial accuracy of the MAX6018AEUR12+T?
The MAX6018AEUR12+T delivers a nominal output voltage of 1.263V with an initial accuracy of ±0.2% over the –40°C to +85°C temperature range. This is confirmed in the Electrical Characteristics table for MAX6018A_12, where VOUT is specified as 1.2605V (min) to 1.2655V (max) at TA = +25°C, and guaranteed across temperature.
Can the MAX6018AEUR12+T operate from a single 1.5V alkaline cell?
No-the MAX6018AEUR12+T requires a minimum input voltage of (VOUT + 200mV) = 1.463V. While it can start up from ~1.46V, sustained regulation below 1.5V is marginal due to battery internal resistance and voltage sag under load; it is optimized for two-cell alkaline (2.0–3.2V fresh, down to ~1.8V total at end-of-life).
What output capacitance is required for stability with the MAX6018AEUR12+T?
The MAX6018AEUR12+T requires a minimum output capacitance of 100pF to ensure stability and remains stable with up to 1μF. The device is internally compensated and does not require series resistance, simplifying design for battery-powered applications where board space is limited.
How does the supply current of the MAX6018AEUR12+T vary with input voltage?
The MAX6018AEUR12+T exhibits exceptional supply voltage independence: its quiescent current varies by only 0.1μA per volt across the input range (1.463V to 5.5V). At +25°C, IIN is 3–5μA; over –40°C to +85°C, it remains 3–6μA-enabling predictable power budgeting in energy-harvesting and battery systems.
Is the MAX6018AEUR12+T pin-compatible with other MAX6018 variants like the 1.6V or 1.8V versions?
Yes-the entire MAX6018 family, including MAX6018AEUR12+T, MAX6018AEUR16+T, and MAX6018AEUR18+T, shares identical 3-pin SOT23-3 pinout (IN, OUT, GND) and package dimensions. Only the output voltage and top-mark codes differ; no PCB redesign is needed when selecting between voltage options within the same grade (A or B).
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:
- Tape & Reel (TR)
- 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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