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Analog Devices Inc./Maxim Integrated MAX6037AAUK25+T
- Part No.:
- MAX6037AAUK25+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6037AAUK25+T.pdf
- Description:
- IC VREF SERIES 0.2% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,053
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Product details
Overview
MAX6037AAUK25+T from Maxim Integrated is a low-dropout, micropower, fixed-output voltage reference delivering 2.500V with ±0.2% initial accuracy and 25ppm/°C max temperature coefficient. It operates from 2.7V to 5.5V supply, draws ≤275µA quiescent current, supports ±5mA load current, and features active-low shutdown (≤500nA). It serves as a precision reference in battery-powered data converters and automotive sensor signal chains.
For engineers reviewing the MAX6037AAUK25+T datasheet, MAX6037AAUK25+T pinout, MAX6037AAUK25+T application, or MAX6037AAUK25+T equivalent, key selection criteria include its A-grade accuracy (±0.2%), automotive temperature range (–40°C to +125°C), SOT23-5 package compatibility, and low dropout (100mV max at 1mA) for low-voltage systems.
Technical Context
The MAX6037AAUK25+T is a series-mode bandgap voltage reference with internal trimming for high initial accuracy and low thermal drift. Its architecture enables stable operation with capacitive loads from 0.02µF to 1µF and supports both sourcing and sinking up to 5mA without regulation loss.
Shutdown is implemented via an active-low logic input (SHDN) that disables the output stage and reduces supply current to ≤500nA. The device maintains output impedance >10MΩ when disabled and exhibits <514ppm thermal hysteresis over temperature cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±0.2% (±5mV) at +25°C - ensures ADC/DAC full-scale accuracy in 12-bit+ systems |
| Tempco | 25ppm/°C max - limits output drift to ±312.5ppm (±0.78mV) across –40°C to +125°C |
| Dropout Voltage | 100mV max at 1mA load - enables operation with VIN as low as 2.6V while maintaining regulation |
| Quiescent Current | 275µA max - supports multi-year battery life in always-on portable instrumentation |
| Shutdown Current | 500nA max - reduces system standby power by >500× vs. active mode |
| Load Drive | ±5mA sourcing/sinking - directly interfaces with op-amp inputs, SAR ADC references, and analog switches |
| Capacitive Load Range | 0.02µF to 1µF - compatible with standard ceramic bypass caps without oscillation risk |
Pinout & Package
The MAX6037AAUK25+T is housed in a 5-pin SOT23-5 package (U5-2 code), with exposed pad not electrically connected. Pin 1 is ADJ (internally connected, no external connection required for fixed-output variants); pins 2–5 are GND, SHDN, IN, and OUT respectively.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ADJ) | Adjustment terminal | Internally connected for fixed-output variants like MAX6037AAUK25+T; must remain unconnected |
| 2 (GND) | Ground reference | Primary return path for reference output and supply current; requires low-impedance PCB connection |
| 3 (SHDN) | Active-low enable control | Pull low (≤0.75V) to disable output; tie to IN for always-on operation |
| 4 (IN) | Supply input | Accepts 2.7V–5.5V; requires 0.1µF ceramic bypass capacitor to GND for stability |
| 5 (OUT) | Precision reference output | Delivers regulated 2.500V; connect 0.02µF–1µF capacitor to GND for transient response and noise filtering |
Key Features
| Feature | Design Value |
|---|---|
| A-grade accuracy | ±0.2% initial tolerance enables direct use in 12-bit ADC reference without calibration |
| Automotive temp range | –40°C to +125°C operation qualifies for under-hood and ADAS sensor front-ends |
| Low dropout | 100mV max at 1mA allows integration into 2.7V systems with minimal headroom penalty |
| Micropower shutdown | 500nA max shutdown current extends battery runtime in intermittent-sampling applications |
| Capacitive-load stable | Stable with 0.02µF–1µF output capacitance - eliminates need for external compensation networks |
Applications
| Medical Instrumentation | Portable Data Loggers |
|---|---|
|
Use Scenario: Precision analog front-end for handheld ECG monitors requiring stable 2.5V reference for 16-bit ADCs. IC Role / Device Role / Timing Role: Primary voltage reference for signal conditioning and digitization chain. Use Value: ±0.2% accuracy and 25ppm/°C tempco ensure <0.05% total error across clinical operating temperatures. |
Use Scenario: Battery-powered environmental sensor node logging temperature, humidity, and pressure. IC Role / Device Role / Timing Role: Reference source for multi-channel SAR ADCs and precision op-amps. Use Value: 275µA quiescent current and 500nA shutdown extend AA-cell lifetime to >5 years in sleep-wake cycles. |
| Automotive Sensor Modules | Industrial Process Controllers |
|
Use Scenario: Pressure transducer interface in engine management systems operating at –40°C to +125°C. IC Role / Device Role / Timing Role: Stable excitation and reference for ratiometric bridge measurements. Use Value: Automotive-grade qualification and <514ppm thermal hysteresis prevent calibration drift after thermal cycling. |
Use Scenario: 4–20mA transmitter with HART modulation requiring precise 2.5V reference for DAC and isolator biasing. IC Role / Device Role / Timing Role: Master reference for current-loop output stage and diagnostic circuitry. Use Value: ±5mA drive capability supports simultaneous loading by multiple internal analog blocks 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 |
|---|---|---|---|
| REF3025AIDBZR | 2.5V, ±0.2%, 50ppm/°C max, 50µA IQ, SOT23-3, no shutdown | Lacks shutdown; lower quiescent current but higher tempco; smaller footprint | Select when ultra-low IQ dominates over tempco and shutdown is unnecessary |
| ADR3425ARJZ-R7 | 2.5V, ±0.1%, 10ppm/°C max, 120µA IQ, SOT23-5, no shutdown | Higher accuracy and lower tempco, but no shutdown function; higher cost | Select when highest stability is critical and system-level power gating replaces IC shutdown |
Compared with REF3025AIDBZR and ADR3425ARJZ-R7, the MAX6037AAUK25+T uniquely combines A-grade accuracy, automotive temperature range, integrated shutdown, and SOT23-5 compatibility-making it optimal for space-constrained, battery-aware, and thermally demanding embedded systems where all three attributes are required simultaneously.
Availability
MAX6037AAUK25+T is available at Aetrix Electronics and suitable for medical instrumentation, portable data loggers, and automotive sensor modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6037AAUK25+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, mixed-signal, and power management ICs for demanding industrial, automotive, and medical applications.
The MAX6037 family delivers low-power, high-accuracy voltage references optimized for battery-operated and automotive-grade systems requiring guaranteed performance from –40°C to +125°C.
FAQ
What is the output voltage tolerance and temperature coefficient of the MAX6037AAUK25+T?
The MAX6037AAUK25+T provides a nominal 2.500V output with ±0.2% initial accuracy (±5mV) at +25°C and a maximum temperature coefficient of 25ppm/°C across –40°C to +125°C. This ensures total output variation remains within ±0.78mV over the full automotive temperature range, supporting high-resolution data acquisition without recalibration.
Can the MAX6037AAUK25+T be used with a 2.7V supply?
Yes, the MAX6037AAUK25+T operates with a minimum supply voltage of 2.7V (per Electrical Characteristics table for VOUT = 2.500V), delivering full specification performance including ±0.2% accuracy and 25ppm/°C tempco. At 2.7V input, the 100mV max dropout leaves 2.6V at the output - sufficient to maintain regulation under all load and temperature conditions.
How does the shutdown function work on the MAX6037AAUK25+T?
The MAX6037AAUK25+T features an active-low SHDN pin (Pin 3). Pulling SHDN ≤0.75V disables the output and reduces supply current to ≤500nA. For normal operation, SHDN must be tied to the IN pin. The device exits shutdown in ≤75µs (typical) when SHDN rises above 2.0V, enabling fast wake-up in duty-cycled systems.
Is the MAX6037AAUK25+T compatible with ceramic output capacitors?
Yes, the MAX6037AAUK25+T is explicitly characterized for stable operation with ceramic capacitors ranging from 0.02µF to 1µF on the OUT pin. No series resistance or additional compensation is required, simplifying layout and reducing BOM count compared to references needing tantalum or electrolytic capacitors.
What is the maximum load current the MAX6037AAUK25+T can source or sink?
The MAX6037AAUK25+T can continuously source or sink up to ±5mA while maintaining output regulation within specifications. At 5mA sourcing, dropout remains ≤410mV (tested at VOUT = 5V), and load regulation is ≤0.036%/mA - ensuring minimal voltage shift even under full dynamic load in precision analog circuits.
MAX6037AAUK25+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):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 25ppm/°C
- Noise - 0.1Hz to 10Hz:
- 14µVp-p
- Noise - 10Hz to 10kHz:
- 30µVrms
- Voltage - Input:
- 2.7V ~ 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
MAX6037AAUK25+T FAQ
1.How can I place an order for MAX6037AAUK25+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6037AAUK25+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 MAX6037AAUK25+T reliable?
The price and inventory of MAX6037AAUK25+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6037AAUK25+T is usually 5 days.
3.What payment methods are accepted for MAX6037AAUK25+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6037AAUK25+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6037AAUK25+T?
MAX6037AAUK25+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6037AAUK25+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 MAX6037AAUK25+T?
For technical support, including MAX6037AAUK25+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6037AAUK25+T requirements.
6.How does Aetrix verify that MAX6037AAUK25+T is sourced from the original manufacturer or authorized distributors?
All MAX6037AAUK25+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 MAX6037AAUK25+T meets industry standards.
7.What is the process for return or replacement of MAX6037AAUK25+T?
All MAX6037AAUK25+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6037AAUK25+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 MAX6037AAUK25+T part is unused and in its original packaging.
Return procedure for MAX6037AAUK25+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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