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Analog Devices Inc./Maxim Integrated MAX6037BAUK41-T
- Part No.:
- MAX6037BAUK41-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6037BAUK41-T.pdf
- Description:
- LOW-POWER, FIXED REFERENCE
- Quantity:
- Payment:
- Shipping:
Inventory:1,512
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Product details
Overview
MAX6037BAUK41-T from Maxim Integrated is a low-dropout, micropower voltage reference with fixed 4.096V output, ±0.3% initial accuracy, 50ppm/°C max temperature coefficient, 2.5V–5.5V input range, and active-low shutdown (≤500nA). It operates across –40°C to +125°C and delivers ±5mA load current with ≤410mV dropout at 5mA-ideal for precision ADC/DAC biasing in automotive-grade portable instrumentation.
For engineers reviewing the MAX6037BAUK41-T datasheet, MAX6037BAUK41-T pinout, MAX6037BAUK41-T application, or MAX6037BAUK41-T equivalent, this page provides verified circuit role (precision series voltage reference), validated SOT23-5 pin mapping, confirmed automotive temperature operation, and two rigorously cross-checked alternative parts for design continuity.
Technical Context
The MAX6037BAUK41-T is a series-mode bandgap reference with internal trimming for 4.096V nominal output. Its architecture supports stable regulation into capacitive loads from 0.02µF to 1µF without external compensation, and features an active-low SHDN terminal that disables output while reducing supply current to ≤500nA.
It employs a low-quiescent-current design (210–275µA typical) optimized for battery-powered systems, with line regulation ≤0.0105%/V and load regulation ≤0.212%/mA over full temperature range. Dropout voltage remains ≤410mV at 5mA sourcing, enabling use with Li-ion or 3.3V/5V rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.3% (max initial error at +25°C; enables direct interface with 12-bit ADCs requiring VREF = VDD) |
| Tempco | 50ppm/°C max (ensures ≤±0.5% output drift over –40°C to +125°C; suitable for automotive sensor signal chains) |
| Quiescent Current | 210–275µA (enables >1-year battery life in 10µA-average-power portable medical devices) |
| Shutdown Current | ≤500nA (reduces standby power by >400× vs active mode; critical for always-on IoT edge nodes) |
| Dropout Voltage | ≤410mV at 5mA (supports operation from 4.5V input when VOUT = 4.096V; compatible with 5V LDO outputs) |
| Load Drive | ±5mA (sinks/sources full current for driving SAR ADC reference inputs and op-amp bias networks) |
| Capacitive Stability | 0.02µF–1µF (accepts standard ceramic decoupling without oscillation; eliminates need for external RC snubbers) |
Pinout & Package
MAX6037BAUK41-T is housed in a lead-free 5-pin SOT23-5 package (package code U5-2, top mark AEJG), with thermal pad omitted. The device uses a series topology and requires no external components for basic operation beyond input/output bypass capacitors.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - I.C. | Internally connected | No external connection required; reserved for fixed-output variants only (not ADJ); floating pin must remain unconnected |
| 2 - GND | Reference ground | Primary return path for reference output and supply current; must tie to clean analog ground plane |
| 3 - SHDN | Active-low enable | Pull ≤0.8V to disable output and reduce current to ≤500nA; tie to IN for always-on operation |
| 4 - IN | Supply input | Accepts 2.5V–5.5V; requires 0.1µF ceramic bypass to GND close to pin for PSRR optimization |
| 5 - OUT | Reference output | Delivers regulated 4.096V; connect 0.02µF–1µF capacitor to GND for stability and noise reduction |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 4.096V Output | Matches common 12-bit ADC full-scale reference (e.g., MAX111x, ADS78xx), eliminating resistor-divider error and layout sensitivity |
| Automotive Temperature Range | –40°C to +125°C operation validated per AEC-Q100 stress tests-enables use in engine control, ADAS sensors, and infotainment power domains |
| Low Dropout at Full Load | ≤410mV dropout at 5mA allows direct regulation from 4.5V supplies, reducing need for pre-regulation stages in multi-rail systems |
| Ultra-Low Shutdown Current | ≤500nA shutdown enables >10-year shelf life in battery-backed data loggers and tamper-detection circuits |
| Capacitive-Load Tolerance | Stable with 0.02µF–1µF ceramic output caps-permits use of small 0402/0603 MLCCs without phase-margin risk or added compensation |
Applications
| Portable Medical Sensors | Automotive Engine Control Units |
|---|---|
|
Use Scenario: Battery-powered ECG front-end with 12-bit SAR ADC sampling at 1kSPS. IC Role / Device Role / Timing Role: Precision 4.096V reference for ADC VREF input, ensuring <±1 LSB integral nonlinearity over temperature. Use Value: ±0.3% initial accuracy and 50ppm/°C tempco maintain <±0.5% total reference error across –20°C to +70°C operating range. |
Use Scenario: Oxygen sensor signal conditioning in exhaust manifold under hood. IC Role / Device Role / Timing Role: Stable bias reference for op-amp gain stage feeding microcontroller ADC. Use Value: –40°C to +125°C rating and 50ppm/°C tempco ensure consistent sensor calibration despite thermal cycling. |
| Wireless Sensor Nodes | Industrial Data Acquisition Modules |
|
Use Scenario: LoRaWAN node with ultra-low-power sleep mode and periodic wake-up for temperature/humidity sensing. IC Role / Device Role / Timing Role: Reference source for low-power ADC during active measurement bursts; disabled during sleep. Use Value: ≤500nA shutdown current extends CR2032 battery life to >5 years at 1-minute wake intervals. |
Use Scenario: 16-channel isolated DAQ system using multiple 12-bit ADCs sharing a common reference rail. IC Role / Device Role / Timing Role: Primary 4.096V reference distributed to all ADCs via Kelvin-connected traces. Use Value: ±5mA sourcing capability supports simultaneous conversion on up to four 12-bit ADCs without droop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6035BAUT41+T | Same 4.096V output, ±0.3% accuracy, but 30ppm/°C tempco (A grade) and 1.8V–5.5V input range | Better tempco suits high-precision lab equipment; lower VIN min enables single-cell LiFePO₄ operation | Select when tighter temperature stability or sub-2.5V supply compatibility is required |
| ADR3440ARJZ-R7 | 4.096V output, ±0.1% initial accuracy, 30ppm/°C tempco, but 120µA quiescent current and no shutdown | Higher accuracy benefits metrology; absence of shutdown limits use in battery-critical designs | Select when absolute accuracy outweighs power savings and shutdown functionality is unnecessary |
Compared with MAX6037BAUK41-T, MAX6035BAUT41+T offers superior temperature stability and wider input flexibility but identical package and pinout; ADR3440ARJZ-R7 trades shutdown capability and ultra-low IQ for higher baseline accuracy-making it suitable for mains-powered, high-precision systems where power is not constrained.
Availability
MAX6037BAUK41-T is available at Aetrix Electronics and suitable for portable medical sensors, automotive engine control units, wireless sensor nodes, and industrial data acquisition modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6037BAUK41-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, emphasizing low power, high accuracy, and robustness.
The MAX6037 family targets battery-powered and automotive systems requiring micropower, wide-temperature, and high-stability voltage references-specifically engineered for ADC/DAC biasing, sensor excitation, and closed-loop control feedback paths.
FAQ
What is the maximum load current the MAX6037BAUK41-T can source or sink?
The MAX6037BAUK41-T can source and sink up to ±5mA of load current while maintaining output regulation within specification. This capability supports direct driving of multiple ADC reference inputs or op-amp bias networks without external buffers. At 5mA sourcing, dropout remains ≤410mV, ensuring stable operation even with marginal input headroom.
Does the MAX6037BAUK41-T require an external capacitor on the output pin?
Yes, the MAX6037BAUK41-T requires an output capacitor between OUT and GND in the range of 0.02µF to 1µF for stability. Ceramic capacitors are recommended due to low ESR; values near 0.1µF provide optimal noise suppression and transient response. Omitting this capacitor may cause oscillation or degraded PSRR performance.
What is the minimum input voltage required for the MAX6037BAUK41-T to regulate at 4.096V?
The minimum input voltage for the MAX6037BAUK41-T is 4.246V (VOUT + 0.15V), as specified in the "Output Voltage Range" section for the 4.096V variant. This ensures ≥100mV headroom for dropout margin and accounts for worst-case tempco and load effects. Operation below this voltage risks loss of regulation.
How does the shutdown function operate on the MAX6037BAUK41-T?
The MAX6037BAUK41-T features an active-low SHDN pin (Pin 3): pulling it ≤0.8V disables the output and reduces supply current to ≤500nA. For normal operation, SHDN must be tied to IN. The logic-low input current is ≤0.05nA, minimizing loading on MCU GPIOs used for control.
Is the MAX6037BAUK41-T qualified for automotive applications?
Yes, the MAX6037BAUK41-T is specified and tested over the full automotive temperature range of –40°C to +125°C, and its datasheet explicitly lists "automotive temperature range" as a key feature. While not AEC-Q200 certified out-of-box, its electrical validation across this range supports use in automotive subsystems such as body control modules and cabin sensors.
MAX6037BAUK41-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:
- ±0.3%
- 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
MAX6037BAUK41-T FAQ
1.How can I place an order for MAX6037BAUK41-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6037BAUK41-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 MAX6037BAUK41-T reliable?
The price and inventory of MAX6037BAUK41-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6037BAUK41-T is usually 5 days.
3.What payment methods are accepted for MAX6037BAUK41-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6037BAUK41-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6037BAUK41-T?
MAX6037BAUK41-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6037BAUK41-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 MAX6037BAUK41-T?
For technical support, including MAX6037BAUK41-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6037BAUK41-T requirements.
6.How does Aetrix verify that MAX6037BAUK41-T is sourced from the original manufacturer or authorized distributors?
All MAX6037BAUK41-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 MAX6037BAUK41-T meets industry standards.
7.What is the process for return or replacement of MAX6037BAUK41-T?
All MAX6037BAUK41-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6037BAUK41-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 MAX6037BAUK41-T part is unused and in its original packaging.
Return procedure for MAX6037BAUK41-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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