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Analog Devices Inc./Maxim Integrated MAX6037AAUK12-T
- Part No.:
- MAX6037AAUK12-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6037AAUK12-T.pdf
- Description:
- LOW-POWER, FIXED REFERENCE
- Quantity:
- Payment:
- Shipping:
Inventory:2,667
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Product details
Overview
MAX6037AAUK12-T from Maxim Integrated is a precision 1.25V fixed-output, low-dropout voltage reference IC with active-low shutdown, ±0.2% initial accuracy, 25ppm/°C max temperature coefficient, and 100mV max dropout at 1mA - designed for high-stability analog sensing and data acquisition in automotive-grade systems operating from -40°C to +125°C.
For engineers reviewing the MAX6037AAUK12-T datasheet, MAX6037AAUK12-T pinout, MAX6037AAUK12-T application, or MAX6037AAUK12-T equivalent, this page delivers verified electrical parameters, SOT23-5 terminal mapping, automotive temperature-range validation, and real-world use cases in medical instrumentation, portable battery-powered sensors, and precision ADC biasing.
Technical Context
The MAX6037AAUK12-T is a series-mode bandgap voltage reference with internal trimming for 1.25V output, optimized for micropower operation (275µA max quiescent current) and low-noise performance (6µVP-P, 0.1Hz–10Hz). Its shutdown circuitry reduces supply current to ≤500nA when SHDN is pulled low, enabling ultra-low-power sleep modes.
It operates from 2.5V to 5.5V input, supports capacitive loads from 0.02µF to 1µF, and delivers ±5mA load current while maintaining output stability. The device uses a proprietary topology that decouples output impedance from load current, ensuring consistent line and load regulation across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.25V ±0.2% (max initial error at +25°C) - enables direct interface with 12-bit+ SAR ADCs without calibration. |
| Tempco | 25ppm/°C (max, A grade) - ensures ≤±0.3125mV drift over -40°C to +125°C span for stable sensor excitation. |
| Dropout Voltage | 100mV (max at 1mA) - allows operation from 1.35V supply, critical for single-cell Li-ion or coin-cell systems. |
| Quiescent Current | 275µA (max) - supports >1-year battery life in 10µA-average-power IoT nodes with periodic wake-up. |
| Shutdown Current | 500nA (max) - reduces standby power by 550× vs active mode, essential for always-on monitoring circuits. |
| Load Drive | ±5mA sourcing/sinking - directly biases transducer bridges or drives op-amp reference inputs without buffering. |
| Noise (0.1–10Hz) | 6µVP-P - contributes <0.0005% of full-scale error in 1.25V-referenced 16-bit ADCs (LSB = 19µV). |
Pinout & Package
MAX6037AAUK12-T is housed in a lead-free 5-pin SOT23-5 package (U5-2 code), measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads suitable for reflow soldering and automotive vibration environments.
| 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 routing required. |
| 2 - GND | Reference ground return | Low-impedance path for reference current and noise; requires dedicated ground plane under pad. |
| 3 - SHDN | Active-low enable control | Pull ≤0.7V to disable output; ≥2.0V to enable - compatible with 1.8V/3.3V/5V logic families. |
| 4 - IN | Supply input (2.5V–5.5V) | Bypass with 0.1µF ceramic capacitor to GND within 2mm - prevents instability during load transients. |
| 5 - OUT | 1.25V precision reference output | Connect 0.02–1µF capacitor to GND; output impedance <1Ω at DC, rises to ~10Ω at 10kHz. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive temperature range | Qualified for -40°C to +125°C operation - meets AEC-Q100 stress test requirements for engine control modules. |
| Capacitive-load stability | Stable with 0.02µF to 1µF output capacitance - eliminates need for external compensation networks. |
| Low thermal hysteresis | 485ppm max ∆VOUT/cycle - minimizes calibration drift after repeated thermal cycling in outdoor equipment. |
| Long-term stability | 133ppm change over 1000h at +25°C - supports 10-year field reliability in medical diagnostic devices. |
| Power supply rejection | -60dB PSRR at 1kHz - rejects ripple from switching regulators feeding the IN pin without additional filtering. |
Applications
| Medical Instrumentation | Portable Battery Sensors |
|---|---|
|
Use Scenario: High-accuracy blood glucose meter using 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Provides stable 1.25V reference for ADC conversion and sensor biasing. Use Value: ±0.2% initial accuracy and 25ppm/°C tempco ensure <±0.5% total measurement error across body temperature range. |
Use Scenario: Wireless environmental sensor node powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Supplies precision reference to low-power op-amps and ADC during 10s wake-up intervals. Use Value: 275µA quiescent current + 500nA shutdown extends battery life to >2 years at 1-sample/minute duty cycle. |
| Precision Regulator Feedback | Wireless LAN RF Front-End |
|
Use Scenario: Low-noise LDO regulator for FPGA core voltage with tight tolerance. IC Role / Device Role / Timing Role: Sets feedback reference for error amplifier in adjustable LDO control loop. Use Value: 6µVP-P low-frequency noise prevents jitter in regulated output, critical for digital clock integrity. |
Use Scenario: Reference for RF power detector and gain-control DAC in 2.4GHz Wi-Fi module. IC Role / Device Role / Timing Role: Stabilizes detector transfer function against supply and temperature variation. Use Value: 100mV dropout enables operation from 1.8V rail, reducing system-level power conversion losses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3012AIDBZR | 1.2V output, ±0.2% accuracy, 50ppm/°C tempco, 250µA IQ, SOT23-3 package | Lower output voltage; no shutdown pin; smaller footprint but no enable control | Select when board space is constrained and shutdown functionality is not required. |
| ADR3412ARJZ-R7 | 1.2V output, ±0.1% accuracy, 10ppm/°C tempco, 120µA IQ, SOT23-5 package | Higher precision and lower tempco, but no shutdown and narrower 2.3V–5.5V input range | Choose for metrology-grade accuracy where ultra-low drift outweighs shutdown need. |
Compared with REF3012AIDBZR and ADR3412ARJZ-R7, the MAX6037AAUK12-T uniquely combines 1.25V output, automotive temperature rating, integrated shutdown, and 25ppm/°C tempco - making it optimal for battery-operated automotive and industrial sensors requiring both precision and power-state control.
Availability
MAX6037AAUK12-T is available at Aetrix Electronics and suitable for medical instrumentation, portable battery sensors, and precision regulator feedback requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6037AAUK12-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 communications applications.
The MAX6037 family delivers micropower, high-accuracy voltage references with shutdown for battery-sensitive systems - targeting precision data acquisition, sensor signal conditioning, and automotive subsystems requiring AEC-Q100 compliance.
FAQ
What is the maximum input voltage for MAX6037AAUK12-T?
The MAX6037AAUK12-T supports an input voltage range of 2.5V to 5.5V. Operation above 5.5V risks permanent damage, as specified in the Absolute Maximum Ratings. At VIN = 5.5V, the device maintains full 1.25V output accuracy and 275µA quiescent current performance across -40°C to +125°C.
Does MAX6037AAUK12-T require an output capacitor?
Yes - MAX6037AAUK12-T requires an output capacitor between OUT and GND, sized from 0.02µF to 1µF, to ensure stability and low-noise operation. Ceramic X7R or C0G types are recommended; values outside this range may cause oscillation or increased noise in precision applications.
Can MAX6037AAUK12-T drive a 5mA load continuously?
Yes - MAX6037AAUK12-T is rated to source and sink up to ±5mA continuously while maintaining output regulation within specifications. At 5mA sourcing, dropout remains ≤410mV, and output voltage deviation stays within ±0.12%/mA load regulation limits defined in the datasheet.
What is the turn-on settling time for MAX6037AAUK12-T?
The MAX6037AAUK12-T achieves 0.1% output accuracy in 75µs after SHDN transitions from low to high, measured with COUT = 0.02µF and VIN = 3V. This fast wake-up supports burst-mode sensing in energy-harvesting and ultra-low-duty-cycle IoT applications.
Is MAX6037AAUK12-T qualified for automotive applications?
Yes - MAX6037AAUK12-T is fully specified and tested over -40°C to +125°C, meeting automotive ambient temperature requirements. While not formally AEC-Q100 certified in this specific grade, its design, test coverage, and qualification data align with AEC-Q100 stress categories for Grade 1 (125°C junction) applications.
MAX6037AAUK12-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 25ppm/°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
MAX6037AAUK12-T FAQ
1.How can I place an order for MAX6037AAUK12-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6037AAUK12-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 MAX6037AAUK12-T reliable?
The price and inventory of MAX6037AAUK12-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6037AAUK12-T is usually 5 days.
3.What payment methods are accepted for MAX6037AAUK12-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6037AAUK12-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6037AAUK12-T?
MAX6037AAUK12-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6037AAUK12-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 MAX6037AAUK12-T?
For technical support, including MAX6037AAUK12-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6037AAUK12-T requirements.
6.How does Aetrix verify that MAX6037AAUK12-T is sourced from the original manufacturer or authorized distributors?
All MAX6037AAUK12-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 MAX6037AAUK12-T meets industry standards.
7.What is the process for return or replacement of MAX6037AAUK12-T?
All MAX6037AAUK12-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6037AAUK12-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 MAX6037AAUK12-T part is unused and in its original packaging.
Return procedure for MAX6037AAUK12-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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