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Analog Devices Inc./Maxim Integrated MAX6018BEUR12+T
- Part No.:
- MAX6018BEUR12+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6018BEUR12+T.pdf
- Description:
- IC VREF SERIES 0.4% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,101
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Product details
Overview
MAX6018BEUR12+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 ±0.4% 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 where supply headroom is minimal.
For engineers reviewing the MAX6018BEUR12+T datasheet, MAX6018BEUR12+T pinout, MAX6018BEUR12+T application, or MAX6018BEUR12+T equivalent, key selection criteria include ultra-low 5μA max supply current, 200mV dropout at 1mA load, supply-voltage-independent quiescent current (0.1μA/V variation), and guaranteed stability with 100pF–1μF capacitive loads.
Technical Context
The MAX6018BEUR12+T uses a bandgap-based architecture to generate a precise 1.263V reference, optimized for operation down to 1.463V input (VOUT + 200mV). Its three-terminal configuration (IN, OUT, GND) eliminates external resistor requirements unlike shunt references.
It features active internal regulation with <200mV dropout at full 1mA load, 700μV/mA max load regulation, and 250μV/V max line regulation over 1.8V–5.5V input range-ensuring high accuracy across battery discharge profiles in portable instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.263V ±0.4% (B grade); enables accurate ADC/DAC biasing at low supply voltages |
| Initial Accuracy | ±0.4% (max); reduces calibration burden in battery-powered data acquisition |
| Temp Drift | ≤50ppm/°C; maintains ≤0.63mV error over –40°C to +85°C operating range |
| Dropout Voltage | 200mV (max at 1mA); supports operation down to 1.463V input-critical for end-of-life battery sensing |
| Supply Current | ≤5μA (max); extends battery life in multi-year sensor nodes |
| Line Regulation | 250μV/V (max); ensures <0.63mV output shift over full 1.8V–5.5V input range |
| Load Regulation | 700μV/mA (max sourcing); guarantees stable reference under varying ADC input impedance |
| Capacitive Load Range | 100pF to 1μF; allows robust bypassing without oscillation in noisy embedded environments |
Pinout & Package
MAX6018BEUR12+T is housed in a RoHS-compliant 3-pin SOT23-3 package (outline 21-0051, land pattern 90-0179), with 1.3mm × 2.9mm footprint and 1.0mm height-optimized for space-constrained PCB layouts.
| 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 |
| 2 (OUT) | Reference Voltage Output | Delivers regulated 1.263V; must be bypassed with ≥100pF to GND for stability |
| 3 (GND) | Ground Reference | Low-impedance return path; shares common ground with load and bypass capacitors |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 5μA max supply current enables >10-year battery life in 10μA average-power IoT sensors |
| Supply-Voltage-Independent IQ | Only 0.1μA/V variation ensures consistent current draw across battery discharge curve |
| Low Dropout | 200mV dropout at 1mA allows direct use with single Li-ion or two alkaline cells at end-of-life |
| No External Resistor Required | Three-terminal series architecture eliminates wasted current and layout complexity of shunt references |
| Wide Capacitive Load Stability | Stable with 100pF–1μF output capacitance-supports ceramic or tantalum bypassing without compensation |
Applications
| Battery Voltage Monitoring | Data Acquisition Front-End |
|---|---|
Use Scenario: Real-time monitoring of two-cell alkaline battery voltage in wireless sensor nodes. IC Role / Device Role / Timing Role: Precision voltage reference for ADC conversion of battery voltage. Use Value: Enables accurate state-of-charge estimation down to 1.463V input-capturing full battery discharge profile without premature shutdown. | Use Scenario: High-resolution analog signal conditioning in portable multimeters. IC Role / Device Role / Timing Role: Stable reference for 16-bit SAR ADC sampling of sensor outputs. Use Value: ±0.4% initial accuracy and 50ppm/°C drift ensure <0.01% measurement error across industrial temperature range. |
| Portable Medical Instrumentation | Industrial Process Sensor Interface |
Use Scenario: Powering reference inputs in handheld blood glucose meters with coin-cell batteries. IC Role / Device Role / Timing Role: Low-noise 1.263V reference for biosensor signal chain amplification and digitization. Use Value: 45μVp-p (0.1Hz–10Hz) noise and 5μA supply current extend single-CR2032 battery life beyond 2 years. | Use Scenario: Analog input module in programmable logic controller (PLC) remote I/O units. IC Role / Device Role / Timing Role: Precision reference for 4–20mA loop-powered sensor signal conditioning. Use Value: 250μV/V line regulation and 700μV/mA load regulation maintain accuracy despite field wiring impedance variations and supply ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6012BEUR12+T | Same 1.263V output, ±0.4% accuracy, but higher 10μA max supply current and 300mV dropout | Less suitable for ultra-low-power end-of-life battery operation due to higher IQ and dropout | Select MAX6018BEUR12+T when supply current ≤5μA and dropout ≤200mV are mandatory |
| REF3012AIDBZR | 1.25V output (0.5% accuracy), 50ppm/°C drift, 5.5V max input, but 50μA supply current and 150mV dropout | Higher power consumption limits use in multi-year battery applications; tighter output tolerance not required for many 12-bit systems | Choose MAX6018BEUR12+T for micropower priority; REF3012AIDBZR only if 1.25V nominal is acceptable and higher IQ is tolerable |
Compared with MAX6012BEUR12+T and REF3012AIDBZR, the MAX6018BEUR12+T uniquely combines 1.263V output, ±0.4% accuracy, 5μA max supply current, and 200mV dropout-making it the only option qualified for long-life, low-voltage battery monitoring where every microamp and millivolt matters.
Availability
MAX6018BEUR12+T is available at Aetrix Electronics and suitable for battery voltage monitoring, portable medical instrumentation, data acquisition front-ends, industrial process sensor interfaces, and handheld test equipment requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6018BEUR12+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 is a semiconductor company specializing in analog and mixed-signal ICs for power management, interface, sensing, and signal processing applications.
The MAX6018 family was designed specifically for ultra-low-power, low-voltage precision reference needs in battery-operated and energy-harvesting systems-emphasizing micropower operation, minimal dropout, and SOT23 space efficiency.
FAQ
What is the exact output voltage tolerance of the MAX6018BEUR12+T over temperature?
The MAX6018BEUR12+T provides a nominal 1.263V output with ±0.4% initial accuracy at +25°C and a maximum temperature coefficient of 50ppm/°C. Over the full –40°C to +85°C operating range, total output error remains within ±0.63% (including initial error and worst-case drift), verified per Electrical Characteristics table on page 2 of the official datasheet.
Can the MAX6018BEUR12+T operate from a single 1.5V alkaline cell?
No-the MAX6018BEUR12+T requires a minimum input voltage of VOUT + 200mV = 1.463V. While it can start up from ~1.463V, sustained operation at full 1mA load demands ≥1.463V input. A fresh 1.5V alkaline cell meets this, but performance degrades as voltage drops below 1.463V; two cells in series are recommended for reliable end-of-life operation.
What is the recommended output capacitor for the MAX6018BEUR12+T?
The MAX6018BEUR12+T requires a minimum 100pF ceramic capacitor from OUT to GND for stability and remains stable with up to 1μF. For optimal transient response in battery-monitoring applications, a 47nF X7R ceramic capacitor is recommended-matching the test condition used in the datasheet's load regulation and line regulation specifications.
Does the MAX6018BEUR12+T support sinking current, and how much?
Yes-the MAX6018BEUR12+T can both source and sink load current. It sinks up to 1mA with 9μV/μA load regulation (–1mA to 0), enabling bidirectional reference buffering in precision op-amp circuits. This capability is explicitly specified in the Electrical Characteristics table for MAX6018_12 on page 2 under "Load Regulation" for negative current.
How does supply voltage variation affect the quiescent current of the MAX6018BEUR12+T?
The MAX6018BEUR12+T exhibits exceptional supply-voltage independence: its quiescent current varies by only 0.1μA/V across the 1.8V–5.5V input range. At +25°C, IIN is 3–5μA regardless of VIN, making it ideal for systems where supply voltage fluctuates-such as during battery discharge-without impacting reference stability or power budget.
MAX6018BEUR12+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:
- ±0.4%
- 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
MAX6018BEUR12+T FAQ
1.How can I place an order for MAX6018BEUR12+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6018BEUR12+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 MAX6018BEUR12+T reliable?
The price and inventory of MAX6018BEUR12+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6018BEUR12+T is usually 5 days.
3.What payment methods are accepted for MAX6018BEUR12+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6018BEUR12+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6018BEUR12+T?
MAX6018BEUR12+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6018BEUR12+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 MAX6018BEUR12+T?
For technical support, including MAX6018BEUR12+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6018BEUR12+T requirements.
6.How does Aetrix verify that MAX6018BEUR12+T is sourced from the original manufacturer or authorized distributors?
All MAX6018BEUR12+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 MAX6018BEUR12+T meets industry standards.
7.What is the process for return or replacement of MAX6018BEUR12+T?
All MAX6018BEUR12+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6018BEUR12+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 MAX6018BEUR12+T part is unused and in its original packaging.
Return procedure for MAX6018BEUR12+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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