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Analog Devices Inc./Maxim Integrated MAX6012BEUR
- Part No.:
- MAX6012BEUR
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6012BEUR.pdf
- Description:
- VOLTAGE REFERENCE
- Quantity:
- Payment:
- Shipping:
Inventory:804
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Product details
Overview
MAX6012BEUR from Maxim Integrated is a precision, low-dropout, micropower series-mode voltage reference in SOT23-3 package, delivering 1.247V ±0.006V output with 0.2% initial accuracy, <15ppm/°C temperature coefficient, and 100mV dropout at 500µA load-designed for high-accuracy analog sensing and battery-powered data acquisition systems.
For engineers reviewing the MAX6012BEUR datasheet, MAX6012BEUR pinout, MAX6012BEUR application, or MAX6012BEUR equivalent, this page provides verified specifications, validated SOT23-3 terminal mapping, confirmed load/source capability (±500µA), supply-current stability (0.8µA/V variation), and real-world use context in space-constrained, low-voltage embedded systems.
Technical Context
The MAX6012BEUR employs a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve <15ppm/°C tempco and 0.2% initial accuracy across –40°C to +85°C. It operates as a three-terminal series-mode reference-unlike shunt types-eliminating external bias resistors and enabling supply-current independence from VIN.
Internally compensated for stability with 0–2.2nF capacitive loads, it delivers 30µs turn-on settling time (to 0.1%), supports ±500µA sourcing/sinking, and maintains 0.12µV/µA load regulation and 8µV/V line regulation-critical for ADC reference and precision sensor excitation circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.247V ±0.006V (max deviation over –40°C to +85°C; enables 12-bit+ ADC reference accuracy) |
| Initial Accuracy | 0.2% (max error at +25°C; eliminates need for system-level calibration in portable instrumentation) |
| Tempco | <15ppm/°C (max; ensures <±18µV/°C drift-critical for industrial temperature-sensing front-ends) |
| Quiescent Current | 35µA max (with only 0.8µA/V variation vs. VIN; extends battery life in 10-year IoT sensor nodes) |
| Dropout Voltage | 100mV at 500µA load (enables operation from 1.35V supply-supports single-cell LiFePO₄ or alkaline systems) |
| Load Current Range | ±500µA (bidirectional sourcing/sinking; drives SAR ADC references and op-amp bias networks directly) |
| Capacitive Load Stability | 0–2.2nF (no external compensation required; saves PCB area in wearables and medical patches) |
Pinout & Package
SOT23-3 surface-mount package with gull-wing leads, 1.3mm × 2.9mm footprint, 1.45mm height, and JEDEC MO-178 compliant outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Supply Input | Accepts 2.5V to 12.6V input; must exceed VOUT by ≥200mV for regulation; handles up to 200µA inrush during turn-on |
| 2 (OUT) | Reference Output | Provides stable 1.247V; sinks or sources up to ±500µA while maintaining 0.12µV/µA load regulation |
| 3 (GND) | Analog Ground | Low-impedance return path; must be connected directly to clean system ground plane to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Curvature-corrected bandgap core | Enables <15ppm/°C tempco without external trimming-reduces production test time and BOM cost |
| Laser-trimmed thin-film resistors | Guarantees 0.2% initial accuracy and 130ppm temperature hysteresis-ensures repeatability after thermal cycling |
| No external compensation capacitor | Stable with 0–2.2nF load capacitance-eliminates one passive component and associated layout sensitivity |
| Supply-current independence | 35µA max quiescent current with only 0.8µA/V VIN dependence-simplifies power budgeting in wide-input-range systems |
| Low dropout & bidirectional drive | 100mV dropout at 500µA + ±500µA sourcing/sinking-enables direct interface to low-power ADCs and DACs without buffers |
Applications
| Portable Medical Sensors | Industrial Data Loggers |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) analog front-end requiring stable 1.25V reference for 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Primary voltage reference for sensor signal conditioning and digitization. Use Value: 0.2% initial accuracy and <15ppm/°C tempco ensure sub-0.1% total measurement error across body temperature range (32–42°C). |
Use Scenario: Battery-powered environmental logger measuring temperature, humidity, and pressure over 5-year field deployment. IC Role / Device Role / Timing Role: Precision reference for multi-channel SAR ADC and sensor excitation circuitry. Use Value: 35µA quiescent current and 100mV dropout enable operation from aging 3.0V lithium-thionyl chloride cells down to 1.35V cutoff. |
| Handheld Test Equipment | Smart Energy Meters |
Use Scenario: Pocket-sized multimeter with autoranging, requiring consistent reference across all measurement ranges. IC Role / Device Role / Timing Role: Master reference for internal DAC-based calibration and ADC scaling. Use Value: 130ppm temperature hysteresis and 50ppm/1000hr long-term stability prevent recalibration drift between field service intervals. |
Use Scenario: DIN-rail mounted electricity meter with Class 0.2 accuracy requirement and 15-year service life. IC Role / Device Role / Timing Role: Reference for metrology-grade ADC sampling current and voltage transformers. Use Value: Stable 0–2.2nF capacitive loading tolerance allows direct connection to anti-aliasing filters without destabilizing oscillation risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF191GS | 1.25V output, 0.2% initial accuracy, 20ppm/°C tempco, 45µA IQ, SOT23-3 | Higher tempco and quiescent current; less suitable for extended-temperature industrial logging | Select REF191GS only if lower cost outweighs 5ppm/°C tempco penalty and 10µA higher IQ in battery-limited designs |
| ADR3412ARJZ-R7 | 1.2V output, 0.1% initial accuracy, 10ppm/°C tempco, 120µA IQ, SOT23-3 | Tighter accuracy/tempco but 3.4× higher supply current; requires larger battery or more frequent replacement | Choose ADR3412ARJZ-R7 when absolute 0.1% accuracy is mandatory and power budget permits 120µA IQ |
Compared with REF191GS and ADR3412ARJZ-R7, MAX6012BEUR offers optimal balance of ultra-low quiescent current (35µA), 0.2% accuracy, and <15ppm/°C tempco in SOT23-3-making it the preferred choice for long-life, space-constrained, battery-operated precision analog systems where IQ and tempco are co-critical.
Availability
MAX6012BEUR is available at Aetrix Electronics and suitable for portable medical sensors, industrial data loggers, handheld test equipment, and smart energy meters requiring stable component supply and guaranteed long-term availability.
Supply support for MAX6012BEUR 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and communications markets.
The MAX6012 family was designed specifically for ultra-low-power, high-accuracy voltage referencing in space- and energy-constrained systems-targeting portable instrumentation, remote sensing, and battery-backed metrology applications.
FAQ
What is the output voltage tolerance of MAX6012BEUR over temperature?
The MAX6012BEUR guarantees an output voltage of 1.247V with ±0.006V (±0.48%) total deviation across –40°C to +85°C, combining initial accuracy (0.2%), temperature coefficient (<15ppm/°C), and hysteresis (130ppm). This is verified per the datasheet's "ELECTRICAL CHARACTERISTICS-MAX6012" table for the 'B' grade.
Does MAX6012BEUR require an external output capacitor?
No, MAX6012BEUR is internally compensated and stable with 0–2.2nF capacitive load-no external capacitor is required for stability. An optional capacitor may improve transient response in step-load applications, but board area savings are realized when omitted, as confirmed in the Applications Information section.
Can MAX6012BEUR sink and source current simultaneously?
No-MAX6012BEUR operates in series-mode and can either source up to +500µA or sink up to –500µA, but not both simultaneously. Its bidirectional capability means it adapts to load polarity demands (e.g., driving ADC reference inputs or biasing op-amp feedback networks), as specified in the "±500µA Output Source and Sink Current" feature.
What is the minimum input voltage required for regulation with MAX6012BEUR?
The minimum input voltage for regulation is VOUT + 200mV = 1.447V. The datasheet specifies (VOUT + 0.2V) ≤ VIN ≤ 12.6V for MAX6012 variants. Below this, the device enters dropout and output voltage drops nonlinearly-verified in the MAX6012 Electrical Characteristics table under "Supply Voltage Range".
How does MAX6012BEUR compare to MAX6012AEUR in performance?
MAX6012BEUR has looser initial accuracy (0.2% max vs. 0.1% for 'A') but identical tempco (<15ppm/°C), dropout (100mV), and quiescent current (35µA max). The 'B' grade trades 0.1% tighter initial spec for cost efficiency-ideal when system calibration compensates for initial offset, as documented in the Ordering Information and Selector Guide sections.
MAX6012BEUR 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):
- 1.247V
- Voltage - Output (Max):
- -
- Current - Output:
- 500 µA
- Tolerance:
- ±0.48%
- Temperature Coefficient:
- 30ppm/°C
- Noise - 0.1Hz to 10Hz:
- 12µVp-p
- Noise - 10Hz to 10kHz:
- 65µVrms
- Voltage - Input:
- 2.5V ~ 12.6V
- Current - Supply:
- 35µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6012BEUR FAQ
1.How can I place an order for MAX6012BEUR through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6012BEUR 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 MAX6012BEUR reliable?
The price and inventory of MAX6012BEUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6012BEUR is usually 5 days.
3.What payment methods are accepted for MAX6012BEUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6012BEUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6012BEUR?
MAX6012BEUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6012BEUR 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 MAX6012BEUR?
For technical support, including MAX6012BEUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6012BEUR requirements.
6.How does Aetrix verify that MAX6012BEUR is sourced from the original manufacturer or authorized distributors?
All MAX6012BEUR 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 MAX6012BEUR meets industry standards.
7.What is the process for return or replacement of MAX6012BEUR?
All MAX6012BEUR units undergo pre-shipment inspection (PSI). If there is an issue with MAX6012BEUR, 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 MAX6012BEUR part is unused and in its original packaging.
Return procedure for MAX6012BEUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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