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Analog Devices Inc./Maxim Integrated MAX6037CAUK41-T
- Part No.:
- MAX6037CAUK41-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6037CAUK41-T.pdf
- Description:
- LOW-POWER, FIXED REFERENCE
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX6037CAUK41-T from Maxim Integrated is a low-dropout, micropower series-mode voltage reference with fixed 4.096V output, ±0.5% initial accuracy (A-grade), 50ppm/°C max temperature coefficient, and active-low shutdown enabling <500nA quiescent current. It operates from 4.3V to 5.5V input, delivers ±5mA load current, and targets precision analog front-ends in battery-powered medical and portable instrumentation.
For engineers reviewing the MAX6037CAUK41-T datasheet, MAX6037CAUK41-T pinout, MAX6037CAUK41-T application, or MAX6037CAUK41-T equivalent, key selection criteria include its automotive-grade -40°C to +125°C operation, 0.02µF–1µF capacitive-load stability, 410mV max dropout at 5mA, and SOT23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX6037CAUK41-T implements a bandgap-based series-mode reference architecture with internal trimming for 4.096V nominal output. Its shutdown circuitry uses an active-low logic interface with 0.8V max VENL and 2.0V min VENH, ensuring robust disable/enable control across its full 4.3V–5.5V supply range.
It features low-noise performance (50µVRMS @ 10Hz–1kHz), thermal hysteresis of 524ppm, and long-term stability of 133ppm over 1000 hours-critical for high-resolution ADC biasing and precision regulator feedback loops where drift directly impacts measurement fidelity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V fixed, ±0.5% initial accuracy at +25°C - enables direct interface with 12-bit ADCs requiring 4.096V full-scale reference. |
| Tempco | 50ppm/°C max - limits output drift to ±614µV over -40°C to +125°C, supporting automotive sensor signal conditioning. |
| Dropout Voltage | 410mV max at 5mA source current - allows operation with only 4.506V input, critical for single-cell Li-ion systems. |
| Quiescent Current | 275µA max - ensures >1-year battery life in 10µA sleep-current portable devices when paired with shutdown. |
| Shutdown Current | 500nA max - reduces standby power to negligible levels in always-on monitoring nodes. |
| Load Drive | ±5mA sink/source capability - supports driving 10kΩ ADC input impedance plus 100pF sampling capacitance without external buffer. |
| Capacitive Stability | Stable with 0.02µF–1µF output capacitor - accommodates ceramic decoupling for noise-sensitive data acquisition. |
Pinout & Package
MAX6037CAUK41-T is housed in a 5-pin SOT23-5 package (U5-2 code, top mark AEJG), with exposed pad not electrically connected. The package measures 2.9mm × 1.6mm × 1.1mm and is rated for reflow per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I.C.) | Internally Connected | No external connection required; reserved for fixed-output variants (not ADJ version). |
| 2 (GND) | Ground Reference | Primary return path for reference output and supply current; must be low-impedance to minimize noise coupling. |
| 3 (SHDN) | Active-Low Shutdown Input | Pull ≤0.8V to disable output and reduce supply current to <500nA; tie to IN for continuous operation. |
| 4 (IN) | Supply Voltage Input | Accepts 4.3V–5.5V; requires 0.1µF bypass capacitor to GND close to pin for PSRR optimization. |
| 5 (OUT) | Reference Output | Delivers stable 4.096V; connect 0.02µF–1µF capacitor to GND to ensure loop stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 4.096V Output | Matches standard 12-bit DAC/ADC full-scale voltage, eliminating external scaling resistors in data converter interfaces. |
| Automotive Temperature Range | -40°C to +125°C operation enables use in under-hood sensors and industrial controllers without derating. |
| Low Dropout at Full Load | 410mV max dropout at 5mA allows reliable regulation from 3.3V LDO outputs or partially discharged batteries. |
| High PSRR | ≥60dB rejection up to 10kHz suppresses switching noise from DC-DC converters feeding the reference input. |
| Adjustable Version Compatibility | Shares pinout and footprint with MAX6037_ADJ, enabling design reuse across fixed/adjustable reference requirements. |
Applications
| Medical Instrumentation | Portable Data Loggers |
|---|---|
|
Use Scenario: Portable ECG monitor acquiring microvolt-level cardiac signals with 16-bit SAR ADC. IC Role / Device Role / Timing Role: Provides stable 4.096V reference for ADC conversion, defining full-scale range and minimizing gain error. Use Value: ±0.5% initial accuracy and 50ppm/°C tempco ensure <0.01% total unadjusted error over operating temperature, meeting IEC 60601-2-27 clinical accuracy requirements. |
Use Scenario: Battery-powered environmental sensor node logging temperature/humidity every 10 seconds. IC Role / Device Role / Timing Role: Supplies reference voltage to precision voltage-to-frequency converter and microcontroller ADC. Use Value: 275µA quiescent current and 500nA shutdown current extend CR2032 battery life beyond 2 years in duty-cycled operation. |
| Wireless Sensor Networks | Precision Industrial Regulators |
|
Use Scenario: Zigbee-enabled pressure transducer transmitting calibrated readings via RF link. IC Role / Device Role / Timing Role: References bridge amplifier output before digitization, establishing measurement baseline independent of supply variation. Use Value: 4.3V–5.5V input range and 60dB PSRR maintain reference stability despite RF-induced supply ripple on shared power rail. |
Use Scenario: Programmable 4–20mA transmitter with HART modulation requiring stable 4.096V for DAC calibration. IC Role / Device Role / Timing Role: Serves as master reference for 16-bit DAC generating precise current-loop setpoints. Use Value: 133ppm long-term stability over 1000h ensures calibration validity between maintenance cycles in field-deployed equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3040AIDBZR | 4.096V fixed, ±0.2% initial accuracy, 50ppm/°C, 50µA quiescent current, SOT23-3 package | Lacks shutdown function and has lower drive capability (25mA max); optimized for ultra-low-power, non-shutdown designs | Select REF3040AIDBZR when shutdown is unnecessary and supply current must be minimized below 100µA. |
| ADR3440ARJZ-R7 | 4.096V fixed, ±0.1% initial accuracy, 10ppm/°C, 120µA quiescent current, SOT23-5 package | Higher accuracy and lower tempco but no shutdown; requires external enable logic for low-power modes | Choose ADR3440ARJZ-R7 for metrology-grade applications where 10ppm/°C stability outweighs shutdown necessity. |
Compared with REF3040AIDBZR and ADR3440ARJZ-R7, the MAX6037CAUK41-T uniquely integrates shutdown control, automotive temperature rating, and ±5mA drive in a pin-compatible SOT23-5 footprint-making it optimal for battery-operated systems requiring both precision and power-state management.
Availability
MAX6037CAUK41-T is available at Aetrix Electronics and suitable for medical instrumentation, portable data loggers, and wireless sensor networks requiring stable component supply with guaranteed automotive-grade reliability and traceable sourcing.
Supply support for MAX6037CAUK41-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 demanding industrial, automotive, and medical applications.
The MAX6037 family delivers low-power, high-accuracy voltage references with integrated shutdown-targeting battery-operated instrumentation, sensor signal chains, and portable test equipment where size, power, and stability are critical.
FAQ
What is the minimum input voltage required for MAX6037CAUK41-T to regulate at 4.096V?
The MAX6037CAUK41-T requires a minimum input voltage of 4.3V to maintain regulation at its 4.096V output, as specified in the electrical characteristics table. This 200mV headroom ensures stable operation even at maximum load and temperature extremes, and aligns with the 410mV max dropout voltage specification at 5mA source current.
Can MAX6037CAUK41-T drive a 10kΩ load while maintaining output accuracy?
Yes, the MAX6037CAUK41-T can drive a 10kΩ load (409.6µA current) while maintaining output accuracy within specifications. Its load regulation is 0.212%/mA sinking and sourcing, resulting in <0.087mV change at 409.6µA-well within the ±0.5% initial accuracy window and compatible with 12-bit ADC interfaces.
How does the shutdown functionality affect output behavior in MAX6037CAUK41-T?
When SHDN is pulled low, the MAX6037CAUK41-T disables its internal reference core, reducing supply current to <500nA and presenting a high-impedance (>10MΩ) output state. The output voltage collapses to near-GND, and turn-on settling time is 3.2ms to 0.1% of final value-ensuring clean power-state transitions in sequenced systems.
Is MAX6037CAUK41-T compatible with ceramic output capacitors?
Yes, the MAX6037CAUK41-T is explicitly characterized for stability with ceramic capacitors ranging from 0.02µF to 1µF, including X7R and C0G types. This eliminates the need for tantalum or electrolytic capacitors, reducing board area and improving reliability in high-vibration environments.
What is the long-term stability specification for MAX6037CAUK41-T?
The MAX6037CAUK41-T exhibits 133ppm long-term stability after 1000 hours of operation at +25°C, meaning its output voltage drifts by no more than ±0.545mV from initial value. This performance supports calibration intervals exceeding 12 months in field-deployed instrumentation without recalibration.
MAX6037CAUK41-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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- 24µVp-p
- Noise - 10Hz to 10kHz:
- 50µVrms
- Voltage - Input:
- 4.3V ~ 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
MAX6037CAUK41-T FAQ
1.How can I place an order for MAX6037CAUK41-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6037CAUK41-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 MAX6037CAUK41-T reliable?
The price and inventory of MAX6037CAUK41-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6037CAUK41-T is usually 5 days.
3.What payment methods are accepted for MAX6037CAUK41-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6037CAUK41-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6037CAUK41-T?
MAX6037CAUK41-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6037CAUK41-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 MAX6037CAUK41-T?
For technical support, including MAX6037CAUK41-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6037CAUK41-T requirements.
6.How does Aetrix verify that MAX6037CAUK41-T is sourced from the original manufacturer or authorized distributors?
All MAX6037CAUK41-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 MAX6037CAUK41-T meets industry standards.
7.What is the process for return or replacement of MAX6037CAUK41-T?
All MAX6037CAUK41-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6037CAUK41-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 MAX6037CAUK41-T part is unused and in its original packaging.
Return procedure for MAX6037CAUK41-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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