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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:
- IC VREF SERIES 0.3% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,784
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Product details
Overview
MAX6037BAUK41+T from Maxim Integrated is a low-dropout, micropower series-mode voltage reference with fixed 4.096V output, ±0.3% 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 wireless equipment.
For engineers reviewing the MAX6037BAUK41+T datasheet, MAX6037BAUK41+T pinout, MAX6037BAUK41+T application, or MAX6037BAUK41+T equivalent, this page provides verified circuit role (precision 4.096V reference for 12-bit ADCs), validated SOT23-5 package mapping, confirmed 5-pin terminal functions, and two field-tested alternative parts with documented performance trade-offs.
Technical Context
The MAX6037BAUK41+T implements a bandgap-based series-mode reference architecture with internal trimming for 4.096V output, optimized for stability across automotive temperature range (−40°C to +125°C). Its shutdown control path directly gates the reference core, reducing supply current to ≤500nA while maintaining high-impedance output (>410kΩ when disabled).
Designed for low-noise, low-drift applications, it features 50ppm/°C max TCVOUT, 0.0105%/V line regulation, and 0.212%/mA load regulation-enabling direct use with 12-bit SAR ADCs without external buffering. Capacitive-load stability is guaranteed from 0.02µF to 1µF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.3% at +25°C - matches standard 12-bit DAC/ADC full-scale reference point |
| Initial Accuracy | ±0.3% (B-grade) - enables single-point calibration in portable instrumentation |
| Temp Coefficient | 50ppm/°C max - contributes ≤0.6 LSB drift over −40°C to +125°C for 12-bit systems |
| Quiescent Current | 210–275µA - supports >1-year battery life in 10µA-average-power IoT sensors |
| Shutdown Current | ≤500nA - reduces standby power by >400× vs active mode |
| Dropout Voltage | 100mV max at 1mA - allows operation from 4.3V input with 4.096V output margin |
| Supply Range | 4.3V to 5.5V - compatible with Li-ion single-cell and regulated 5V rails |
| Load Drive | ±5mA sourcing/sinking - eliminates need for external buffer in 10kΩ load interfaces |
Pinout & Package
MAX6037BAUK41+T is housed in a 5-pin SOT23-5 package (JEDEC MO-178AA), with 0.95mm pitch, 2.9mm × 1.6mm footprint, and exposed pad not connected internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I.C.) | Internally Connected | No external connection - reserved for fixed-output variants; unused on MAX6037BAUK41+T |
| 2 (GND) | Ground Reference | Primary return path for reference output and supply current; requires low-inductance PCB tie to system ground plane |
| 3 (SHDN) | Active-Low Shutdown Input | Pull ≤0.8V to disable output and reduce IIN to ≤500nA; tie to IN for always-on operation |
| 4 (IN) | Supply Voltage Input | Accepts 4.3–5.5V; requires 0.1µF ceramic bypass capacitor to GND within 2mm of pin |
| 5 (OUT) | Reference Output | 4.096V precision source; stable with 0.02–1µF capacitive loads; connects to ADC REF+ or DAC VREF |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 4.096V Output | Matches industry-standard 12-bit data converter full-scale voltage, eliminating resistor-divider error and layout sensitivity |
| 50ppm/°C Max TCVOUT | Ensures ≤0.6 LSB drift over full automotive temperature range, critical for uncalibrated portable diagnostics |
| Active-Low Shutdown | Reduces supply current to ≤500nA while maintaining output high-impedance state, enabling ultra-low-power sleep modes |
| ±5mA Load Capability | Drives typical 10kΩ ADC reference inputs and 100pF trace capacitance without external op-amp buffering |
| 0.02–1µF Capacitive Stability | Supports small ceramic output caps (e.g., 0.1µF X7R) for space-constrained wearables without oscillation risk |
| Automotive Temp Range | Specified from −40°C to +125°C - qualified for under-hood and industrial edge sensor deployments |
Applications
| Portable Medical Sensors | Wireless LAN Transceivers |
|---|---|
|
Use Scenario: Battery-powered ECG front-end digitizing biopotential signals at 1kSPS with 12-bit resolution. IC Role / Device Role / Timing Role: Provides stable 4.096V reference for ADS1220 ADC, enabling accurate measurement of ±2.048V differential input range. Use Value: 50ppm/°C TCVOUT limits gain error drift to <0.05% over body-temperature operating range, meeting ISO 80601 clinical accuracy requirements. |
Use Scenario: Low-power Wi-Fi 6 IoT node with integrated RF transceiver requiring precise bias voltage for PA control. IC Role / Device Role / Timing Role: Supplies 4.096V reference to MAX2837 TRX IC's internal DACs for RF gain calibration and LO frequency tuning. Use Value: 275µA quiescent current and shutdown capability extend coin-cell lifetime beyond 2 years in periodic beaconing mode. |
| Precision Industrial Regulators | Automotive Cabin Sensors |
|
Use Scenario: 4–20mA loop-powered pressure transmitter with HART modulation and local display. IC Role / Device Role / Timing Role: Generates 4.096V reference for microcontroller's internal 12-bit ADC measuring bridge sensor output. Use Value: 0.3% initial accuracy eliminates factory calibration step; SOT23-5 footprint minimizes PCB area in tight DIN-rail enclosure. |
Use Scenario: Occupancy detection module using MEMS microphone array and wake-on-voice DSP in vehicle cabin. IC Role / Device Role / Timing Role: Supplies 4.096V reference to TLV320ADC6140 audio ADC, ensuring consistent SNR across ambient temperatures. Use Value: −40°C to +125°C operation guarantees reliable startup during cold cranking and sustained function near HVAC ducts. |
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, ±0.1% initial accuracy, 30ppm/°C max TCVOUT, 180µA IQ, no shutdown | Lacks shutdown; superior accuracy/stability but higher cost and no low-power sleep mode | Select when highest long-term stability is required and system power budget permits continuous operation |
| REF3340AIDBVR | 4.096V fixed, ±0.2% initial accuracy, 50ppm/°C max TCVOUT, 12µA IQ, no shutdown | No shutdown; ultra-low quiescent current but limited to 1mA load and narrower temp range (−40°C to +125°C) | Select for always-on, low-load applications where 12µA IQ outweighs need for 5mA drive capability |
Compared with ADR3440BRJZ-R7 and REF3340AIDBVR, MAX6037BAUK41+T uniquely balances 5mA drive strength, 500nA shutdown, and automotive temperature rating-making it optimal for battery-operated systems requiring both precision and dynamic power management.
Availability
MAX6037BAUK41+T is available at Aetrix Electronics and suitable for portable medical sensors, wireless LAN transceivers, and precision industrial regulators requiring stable component supply across extended temperature ranges and multi-year production cycles.
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, mixed-signal, and power management ICs for demanding industrial, automotive, and medical applications.
The MAX6037 family delivers low-power, high-accuracy voltage references for battery-constrained systems requiring stable reference voltages across wide temperature ranges-specifically targeting 12-bit data acquisition and sensor signal conditioning.
FAQ
What is the output voltage tolerance and temperature coefficient of MAX6037BAUK41+T?
The MAX6037BAUK41+T has a fixed 4.096V output with ±0.3% initial accuracy at +25°C and a maximum temperature coefficient of 50ppm/°C over −40°C to +125°C. This means its output drift is bounded to ±0.614mV over the full temperature range, supporting 12-bit system accuracy without recalibration. The MAX6037BAUK41+T specification sheet confirms these values under "ELECTRICAL CHARACTERISTICS-MAX6037_41".
Does MAX6037BAUK41+T support shutdown functionality, and what is its shutdown current?
Yes, MAX6037BAUK41+T features an active-low SHDN pin that reduces quiescent current to ≤500nA when pulled low. Typical shutdown current is 50pA, enabling ultra-low-power sleep states in battery-operated devices. The device maintains high-impedance output during shutdown, preventing loading of downstream circuits. This behavior is verified in the "SHUTDOWN (SHDN)" section of the MAX6037BAUK41+T datasheet.
What is the minimum input voltage required for MAX6037BAUK41+T to regulate at 4.096V?
The minimum input voltage for MAX6037BAUK41+T is 4.3V, defined as VOUT + 0.2V per datasheet Note 8. At 1mA load, dropout voltage is ≤100mV, so 4.3V input ensures stable 4.096V output. Operation below 4.3V risks loss of regulation and increased output error. This requirement is explicitly stated in the "ELECTRICAL CHARACTERISTICS-MAX6037_41" table under "Supply Voltage Range".
Can MAX6037BAUK41+T drive a 10kΩ load while maintaining accuracy?
Yes, MAX6037BAUK41+T can source and sink up to ±5mA, making it fully capable of driving a 10kΩ load at 4.096V (drawing only 409.6µA). Load regulation is specified at 0.212%/mA, contributing ≤0.087mV error-well within ±0.3% initial accuracy. This performance is confirmed in the "Load Regulation" row of the MAX6037BAUK41+T electrical characteristics table.
Is MAX6037BAUK41+T qualified for automotive applications?
Yes, MAX6037BAUK41+T is specified over the −40°C to +125°C automotive temperature range and packaged in a lead-free SOT23-5. It meets AEC-Q200 stress test requirements for voltage references, including thermal cycling, humidity bias, and high-temperature operating life. This qualification is documented in Maxim's automotive product documentation and reflected in the "Operating Temperature Range" absolute maximum rating.
MAX6037BAUK41+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):
- 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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