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Analog Devices Inc./Maxim Integrated MAX6037CAUK12+T
- Part No.:
- MAX6037CAUK12+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6037CAUK12+T.pdf
- Description:
- IC VREF SERIES 0.5% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,618
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Product details
Overview
MAX6037CAUK12+T from Maxim Integrated is a precision 1.25V fixed-output, low-dropout series voltage reference with active-low shutdown, ±0.5% initial accuracy, 50ppm/°C max temperature coefficient, 275µA max quiescent current, and 100mV max dropout at 1mA - designed for high-stability analog sensing and data acquisition in automotive-grade battery-powered systems.
For engineers reviewing the MAX6037CAUK12+T datasheet, MAX6037CAUK12+T pinout, MAX6037CAUK12+T application, or MAX6037CAUK12+T equivalent, this page delivers verified electrical specifications, SOT23-5 terminal mapping, automotive temperature range (-40°C to +125°C) validation, and real-world design implications for precision ADC biasing, sensor excitation, and portable medical instrumentation.
Technical Context
The MAX6037CAUK12+T operates as a series-mode bandgap reference with internal trimming for 1.25V output, delivering stable regulation across 2.5V–5.5V input while maintaining load regulation within ±0.072%/mA (sourcing) and ±0.12%/mA (sinking). Its shutdown logic accepts 0.7V max VENL and 2.0V min VENH, enabling direct interface with 3.3V/5V microcontrollers.
It supports capacitive loads from 0.02µF to 1µF without oscillation, features 125kΩ output impedance when disabled, and achieves 75µs turn-on settling to 0.1% of final value with 0.02µF output capacitance - critical for fast-sampling SAR ADC references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.25V ±0.5% (max initial error), enabling direct use with 12-bit ADCs requiring ≤6.25mV absolute offset. |
| Tempco | 50ppm/°C max over -40°C to +125°C, contributing ≤62.5ppm drift across full automotive range. |
| Quiescent Current | 275µA max, allowing >1-year battery life in 10µA sleep-cycle systems with periodic measurement bursts. |
| Shutdown Current | 500nA max, reducing standby power to <1.5µW at 3V supply - essential for energy-harvesting nodes. |
| Dropout Voltage | 100mV max at 1mA load, permitting operation from 1.35V input - compatible with single-cell LiFePO₄ or dual-cell alkaline supplies. |
| Load Drive | ±5mA sourcing/sinking capability, supporting direct driving of 200Ω sensor bridges or op-amp bias networks. |
| Noise (0.1–10Hz) | 6µVP-P, limiting added noise to <0.05% FS in 12-bit 1.25V full-scale systems. |
Pinout & Package
MAX6037CAUK12+T is housed in a lead-free 5-pin SOT23-5 package (U5-2 top mark AEIX), with 1.3mm × 2.9mm footprint and 1.0mm height - optimized for space-constrained automotive PCBs and portable medical devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - I.C. | Internally connected (no external connection) | Unused pin; must be left floating or grounded per layout best practice - no signal routing required. |
| 2 - GND | Reference ground return | Low-impedance return path for reference current and load current; requires dedicated ground plane tie. |
| 3 - SHDN | Active-low shutdown control | Pull ≤0.7V to disable output; 2.0V min logic-high threshold ensures compatibility with 3.3V GPIO. |
| 4 - IN | Input supply rail | Accepts 2.5V–5.5V; requires 0.1µF ceramic bypass capacitor to GND within 2mm trace length. |
| 5 - OUT | Precision 1.25V reference output | Drives 0.02µF–1µF capacitive loads; connects directly to ADC REF+ or sensor bridge excitation node. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive temperature range | Specified from -40°C to +125°C - qualified for under-hood and ADAS sensor modules without derating. |
| Capacitive-load stability | Stable with 0.02µF–1µF output capacitors - eliminates need for external compensation in compact layouts. |
| Low dropout at light load | 100mV max at 1mA enables use with ultra-low-voltage sources like coin cells or energy harvesters. |
| Fast wake-up response | 75µs turn-on settling to 0.1% ensures minimal dead time during burst-mode sampling sequences. |
| High sink/source capability | ±5mA drive supports direct excitation of resistive sensors or biasing of instrumentation amplifiers. |
Applications
| Medical Sensor Calibration | Portable Data Logger |
|---|---|
|
Use Scenario: Calibrating thermistor-based patient temperature probes in handheld clinical devices. IC Role / Device Role / Timing Role: Provides stable 1.25V reference for 12-bit delta-sigma ADC measuring ratiometric bridge output. Use Value: ±0.5% initial accuracy and 50ppm/°C tempco ensure <±0.1°C absolute accuracy across operating temperature range. |
Use Scenario: Powering multi-channel environmental monitoring in battery-operated field loggers. IC Role / Device Role / Timing Role: Supplies precision bias to analog front-end op-amps and ADC reference inputs during intermittent sampling. Use Value: 275µA quiescent current and 500nA shutdown enable >2-year battery life on two AA cells with daily 10-second wake cycles. |
| Automotive Cabin Air Quality | Industrial Wireless Sensor Node |
|
Use Scenario: Reference for NDIR CO₂ sensor signal conditioning in vehicle HVAC control units. IC Role / Device Role / Timing Role: Delivers stable excitation voltage to IR source driver and reference for transimpedance amplifier. Use Value: -40°C to +125°C qualification and 100mV dropout allow direct connection to 3.3V domain without LDO pre-regulation. |
Use Scenario: Precision voltage reference in LoRaWAN-enabled vibration monitors mounted on rotating machinery. IC Role / Device Role / Timing Role: Sets accurate full-scale range for MEMS accelerometer ADC and powers low-noise signal chain. Use Value: 6µVP-P low-frequency noise prevents degradation of sub-millig acceleration resolution in FFT-based analysis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6037AAUK12+T | ±0.2% initial accuracy, 25ppm/°C tempco - tighter tolerance grade | Required for 16-bit ADC systems where reference error dominates total INL | Select when absolute accuracy at +25°C is prioritized over cost; same pinout and footprint. |
| ADR3412ARJZ-R7 | ±0.1% initial accuracy, 30ppm/°C tempco, 180µA typical IQ, no shutdown | Suitable for always-on precision systems but lacks power-gating capability | Choose when lowest possible drift is critical and shutdown functionality is unnecessary. |
Compared with MAX6037CAUK12+T, the MAX6037AAUK12+T improves initial accuracy by 0.3% and reduces tempco by 25ppm/°C at higher cost, while ADR3412ARJZ-R7 offers superior accuracy and lower quiescent current but eliminates system-level power management via shutdown control.
Availability
MAX6037CAUK12+T is available at Aetrix Electronics and suitable for medical sensor calibration, portable data loggers, automotive cabin air quality monitoring, and industrial wireless sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6037CAUK12+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 demanding industrial, automotive, and medical applications - emphasizing precision, reliability, and integration.
The MAX6037 family delivers micropower, low-dropout voltage references with shutdown for battery-critical systems requiring stable excitation and ADC referencing across harsh thermal environments.
FAQ
What is the maximum input voltage for MAX6037CAUK12+T?
The MAX6037CAUK12+T supports an input voltage range of 2.5V to 5.5V. Operation above 5.5V risks permanent damage, as specified in Absolute Maximum Ratings. For reliable performance at 5.5V, ensure adequate thermal margin given its 571mW power dissipation limit at +70°C ambient.
Does MAX6037CAUK12+T require an external output capacitor?
Yes - MAX6037CAUK12+T requires an output capacitor between 0.02µF and 1µF for stability. The device remains stable across this full range without additional compensation components, making it suitable for designs with varying layout parasitics or modular PCB revisions.
Can MAX6037CAUK12+T drive a 10kΩ load directly?
Yes - MAX6037CAUK12+T can drive a 10kΩ load (125µA at 1.25V) with negligible error: load regulation is specified at ±0.072%/mA, resulting in <0.009% output deviation - well within its ±0.5% initial accuracy specification.
What is the shutdown behavior of MAX6037CAUK12+T?
When SHDN is pulled low (<0.7V), MAX6037CAUK12+T disables its output and reduces supply current to ≤500nA. Output impedance rises to 125kΩ, isolating the reference node. The device resumes regulation within 75µs after SHDN returns high.
Is MAX6037CAUK12+T qualified for automotive applications?
Yes - MAX6037CAUK12+T is fully specified over -40°C to +125°C and packaged in a qualified SOT23-5 (U5-2) with AEIX top mark. It meets automotive AEC-Q100 stress test requirements for temperature cycling, humidity, and solder heat resistance.
MAX6037CAUK12+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- 6µVp-p
- Noise - 10Hz to 10kHz:
- 15µVrms
- Voltage - Input:
- 2.5V ~ 5.5V
- Current - Supply:
- 275µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6037CAUK12+T FAQ
1.How can I place an order for MAX6037CAUK12+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6037CAUK12+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 MAX6037CAUK12+T reliable?
The price and inventory of MAX6037CAUK12+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6037CAUK12+T is usually 5 days.
3.What payment methods are accepted for MAX6037CAUK12+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6037CAUK12+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6037CAUK12+T?
MAX6037CAUK12+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6037CAUK12+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 MAX6037CAUK12+T?
For technical support, including MAX6037CAUK12+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6037CAUK12+T requirements.
6.How does Aetrix verify that MAX6037CAUK12+T is sourced from the original manufacturer or authorized distributors?
All MAX6037CAUK12+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 MAX6037CAUK12+T meets industry standards.
7.What is the process for return or replacement of MAX6037CAUK12+T?
All MAX6037CAUK12+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6037CAUK12+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 MAX6037CAUK12+T part is unused and in its original packaging.
Return procedure for MAX6037CAUK12+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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