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Analog Devices Inc./Maxim Integrated MAX6037AAUK41+T
- Part No.:
- MAX6037AAUK41+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6037AAUK41+T.pdf
- Description:
- IC VREF SERIES 0.2% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,093
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Product details
Overview
MAX6037AAUK41+T from Maxim Integrated is a low-dropout, micropower series-mode voltage reference with fixed 4.096V output, ±0.2% initial accuracy (A grade), 25ppm/°C max temperature coefficient, and active-low shutdown. It operates from 4.3V to 5.5V supply, draws ≤275µA quiescent current, supports ±5mA load current, and delivers stable output into 0.02µF–1µF capacitive loads - ideal for precision ADC/DAC biasing in battery-powered instrumentation.
For engineers reviewing the MAX6037AAUK41+T datasheet, MAX6037AAUK41+T pinout, MAX6037AAUK41+T application, or MAX6037AAUK41+T equivalent, key selection criteria include its automotive-grade -40°C to +125°C operation, 100mV max dropout at 1mA, shutdown current <500nA, and SOT23-5 package compatibility with space-constrained portable and medical systems.
Technical Context
The MAX6037AAUK41+T implements a bandgap-based series-mode reference architecture with internal trimming for high initial accuracy and low thermal drift. Its shutdown control path uses an active-low logic input referenced to supply voltage, enabling deep sleep states without external circuitry.
It features supply-independent quiescent current across its 4.3V–5.5V input range and maintains output stability over full load (±5mA) and capacitive-load (0.02µF–1µF) variations - critical for high-resolution data acquisition where reference noise and settling time directly impact effective resolution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.2% (max initial error at +25°C) - enables direct interface with 12-bit to 16-bit ADCs requiring precise VREF |
| Tempco | 25ppm/°C (max) - ensures ≤±0.5mV drift over -40°C to +125°C, supporting automotive sensor signal chains |
| Dropout Voltage | 100mV (max at 1mA load) - allows operation with minimal headroom above VOUT, extending battery life in 4.2V Li-ion systems |
| Quiescent Current | 275µA (max) - enables continuous operation in always-on monitoring nodes with µA-level power budgets |
| Shutdown Current | 500nA (max) - reduces system standby power by >500× versus active mode, critical for energy-harvesting devices |
| Load Drive | ±5mA sourcing/sinking - supports direct driving of SAR ADC reference inputs and small analog buffers without external op-amps |
| Capacitive Stability | 0.02µF to 1µF output capacitance - accommodates ceramic decoupling and eliminates need for external compensation |
Pinout & Package
The MAX6037AAUK41+T is housed in a 5-pin SOT23-5 package (U5-2 code, top mark AEJG), with exposed pad not electrically connected. Pin 1 is ADJ (internally connected, no external connection required for fixed-output variants), Pin 2 is GND, Pin 3 is SHDN (active-low), Pin 4 is IN, and Pin 5 is OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ADJ) | Adjustment Input | Internally connected for fixed-output variants like MAX6037AAUK41+T; must remain unconnected per datasheet |
| 2 (GND) | Ground Reference | Primary return path for reference output and supply current; requires low-inductance connection to system ground plane |
| 3 (SHDN) | Active-Low Enable | Pull low (<0.8V) to disable output and reduce supply current to <500nA; tie to IN for always-on operation |
| 4 (IN) | Supply Input | Accepts 4.3V–5.5V input; requires 0.1µF bypass capacitor to GND close to pin for noise immunity |
| 5 (OUT) | Reference Output | Delivers regulated 4.096V; connect 0.02µF–1µF capacitor to GND for stability and transient response |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 4.096V Output | Matches standard 12-bit and 16-bit ADC full-scale reference points, eliminating external scaling resistors |
| A-Grade Accuracy & Tempco | ±0.2% initial error and 25ppm/°C drift enable single-point calibration in industrial sensors |
| Low Dropout at Full Load | 100mV max dropout at 1mA allows use with 4.2V Li-ion batteries down to ~3.2V remaining capacity |
| Automotive Temperature Range | -40°C to +125°C operation supports under-hood and infotainment applications without derating |
| Shutdown Leakage Control | 500nA max shutdown current prevents battery drain in long-term storage or sleep modes |
Applications
| Portable Medical Sensors | Precision Data Acquisition |
|---|---|
Use Scenario: Battery-powered ECG front-end amplifying and digitizing biopotential signals. IC Role / Device Role / Timing Role: Provides stable 4.096V reference for 16-bit sigma-delta ADC converting analog lead voltages. Use Value: ±0.2% initial accuracy and 25ppm/°C tempco ensure <±1 LSB error over temperature, meeting IEC 60601-2-27 clinical accuracy requirements. | Use Scenario: Industrial PLC analog input module measuring 4–20mA current loops. IC Role / Device Role / Timing Role: Supplies reference voltage to 12-bit SAR ADC sampling transducer outputs. Use Value: 100mV dropout enables operation from 4.5V rail derived from isolated DC-DC converter, minimizing heat dissipation in sealed enclosures. |
| Wireless Sensor Nodes | Automotive Cabin Monitoring |
Use Scenario: LoRaWAN node with MEMS accelerometer and temperature sensor transmitting via sub-GHz radio. IC Role / Device Role / Timing Role: Powers ADC reference and bias network for ultra-low-power signal conditioning. Use Value: 500nA shutdown current extends 10-year battery life when paired with duty-cycled RF transmission. | Use Scenario: In-cabin air quality sensor using NDIR CO₂ detection with thermopile amplifier. IC Role / Device Role / Timing Role: Supplies precision reference for analog front-end and microcontroller ADC. Use Value: -40°C to +125°C rating ensures stable performance across vehicle cabin temperature extremes without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3440BRJZ-R7 | 4.096V fixed output, ±0.1% initial accuracy, 10ppm/°C tempco, 3.0V–15V input, 120µA quiescent current | Higher accuracy and lower tempco but higher minimum supply voltage (3.0V) limits use in 3.3V-only systems | Select when tighter initial tolerance and lower drift are prioritized over ultra-low shutdown current |
| REF3340AIDBVR | 4.096V fixed output, ±0.2% initial accuracy, 50ppm/°C tempco, 1.8V–5.5V input, 65µA quiescent current, no shutdown pin | Lacks shutdown functionality and has higher tempco, but supports lower VIN down to 1.8V | Select for cost-sensitive, non-shutdown applications requiring wider input voltage range |
Compared with ADR3440BRJZ-R7 and REF3340AIDBVR, the MAX6037AAUK41+T uniquely combines automotive temperature range, integrated shutdown, and 500nA shutdown current - making it optimal for battery-backed automotive and portable instrumentation where both precision and ultra-low standby power are mandatory.
Availability
MAX6037AAUK41+T is available at Aetrix Electronics and suitable for portable medical sensors, precision data acquisition modules, wireless sensor nodes, and automotive cabin monitoring systems requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for MAX6037AAUK41+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 targets low-power, high-accuracy voltage references for battery-operated and automotive systems - emphasizing micropower operation, wide temperature range, and integrated shutdown control.
FAQ
What is the maximum input voltage for MAX6037AAUK41+T?
The MAX6037AAUK41+T supports a maximum input voltage of 5.5V, with minimum supply voltage specified at 4.3V for reliable operation at its 4.096V output. Exceeding 5.5V risks permanent damage per absolute maximum ratings. The device's line regulation remains stable across this full 4.3V–5.5V range, ensuring consistent reference accuracy regardless of battery voltage sag or supply ripple.
Does MAX6037AAUK41+T require an external output capacitor?
Yes, the MAX6037AAUK41+T requires an external output capacitor between OUT and GND, with a recommended value between 0.02µF and 1µF. Ceramic capacitors are preferred for low ESR. This capacitor ensures stability, improves transient response during load steps, and reduces output noise - omission can cause oscillation or excessive settling time, especially under dynamic load conditions.
How does the shutdown function operate on MAX6037AAUK41+T?
The MAX6037AAUK41+T features an active-low shutdown input (SHDN, Pin 3). Pulling SHDN below 0.8V (logic-low) disables the reference output and reduces supply current to ≤500nA. For normal operation, SHDN must be tied to IN (supply voltage). The shutdown transition time is specified at 3.2ms for entering shutdown and 3.2ms for exiting, ensuring predictable power-state control in microcontroller-managed systems.
What is the output impedance of MAX6037AAUK41+T when disabled?
When disabled via SHDN, the MAX6037AAUK41+T exhibits an output impedance of ≥410kΩ (typical 410kΩ, min not specified). This high impedance isolates the reference node during shutdown, preventing loading of downstream circuits and avoiding unintended current paths. It also minimizes leakage into ADC reference inputs or comparator thresholds during sleep modes.
Can MAX6037AAUK41+T drive a 5mA load continuously?
Yes, the MAX6037AAUK41+T is rated to source and sink up to ±5mA continuously while maintaining output regulation within specifications. At 5mA sourcing, dropout voltage remains ≤410mV (tested at VOUT = 5V), and load regulation is ≤0.212%/mA. For sustained 5mA operation, ensure adequate PCB copper area and ambient temperature stay within -40°C to +125°C to avoid thermal derating of accuracy or reliability.
MAX6037AAUK41+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:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 25ppm/°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
MAX6037AAUK41+T FAQ
1.How can I place an order for MAX6037AAUK41+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6037AAUK41+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 MAX6037AAUK41+T reliable?
The price and inventory of MAX6037AAUK41+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6037AAUK41+T is usually 5 days.
3.What payment methods are accepted for MAX6037AAUK41+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6037AAUK41+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6037AAUK41+T?
MAX6037AAUK41+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6037AAUK41+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 MAX6037AAUK41+T?
For technical support, including MAX6037AAUK41+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6037AAUK41+T requirements.
6.How does Aetrix verify that MAX6037AAUK41+T is sourced from the original manufacturer or authorized distributors?
All MAX6037AAUK41+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 MAX6037AAUK41+T meets industry standards.
7.What is the process for return or replacement of MAX6037AAUK41+T?
All MAX6037AAUK41+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6037AAUK41+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 MAX6037AAUK41+T part is unused and in its original packaging.
Return procedure for MAX6037AAUK41+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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