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Analog Devices Inc./Maxim Integrated MAX6037CAUKADJ+T
- Part No.:
- MAX6037CAUKADJ+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6037CAUKADJ+T.pdf
- Description:
- IC VREF SERIES ADJ 0.5% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,100
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Product details
Overview
MAX6037CAUKADJ+T from Maxim Integrated is an adjustable, low-dropout, micropower voltage reference IC with active-low shutdown, delivering 1.184V to 5V output via external resistor divider. It operates from 2.5V to 5.5V supply, consumes ≤275µA quiescent current, achieves ±0.5% initial accuracy and 50ppm/°C max temperature coefficient, and supports ±5mA load current - ideal for precision battery-powered sensor front-ends and portable medical instrumentation.
For engineers reviewing the MAX6037CAUKADJ+T datasheet, MAX6037CAUKADJ+T pinout, MAX6037CAUKADJ+T application, or MAX6037CAUKADJ+T equivalent, this page delivers verified circuit role (adjustable series-mode reference), automotive-grade (-40°C to +125°C) operation, SOT23-5 package mapping, validated ADJ-based output tuning range, and confirmed alternatives with documented accuracy/temperature-coefficient trade-offs.
Technical Context
The MAX6037CAUKADJ+T implements a series-mode bandgap reference architecture with integrated shutdown control logic. Its ADJ pin accepts a resistive divider to set output voltage while maintaining regulation across input variations from 2.5V to 5.5V and load currents up to ±5mA.
It features internal thermal compensation yielding ≤50ppm/°C tempco (Grade C), ±0.5% initial output accuracy at +25°C, and stable operation with capacitive loads from 0.02µF to 1µF - enabling direct use in high-resolution ADC biasing and low-noise analog signal chains without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Range | 1.184V to 5V, adjustable via external resistor divider on ADJ pin - enables flexible system-level voltage scaling |
| Initial Accuracy | ±0.5% (max) at +25°C - sufficient for 12-bit ADC reference without calibration |
| Tempco | 50ppm/°C (max) - ensures <±0.6% drift over full -40°C to +125°C automotive range |
| Quiescent Current | 275µA (max) - supports multi-year battery life in always-on IoT sensors |
| Shutdown Current | 500nA (max) - enables ultra-low-power sleep modes in portable equipment |
| Dropout Voltage | 100mV (max) at 1mA - allows operation with Li-ion battery down to 2.6V while maintaining regulation |
| Load Drive | ±5mA sourcing/sinking - directly drives ADC reference inputs and op-amp bias networks |
Pinout & Package
MAX6037CAUKADJ+T is housed in a 5-pin SOT23-5 package (U5-2 code, top mark AEJH), optimized for space-constrained PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - ADJ | Adjustment node | Connects to center tap of external R1/R2 divider; sets VOUT = 1.184V × (1 + R1/R2); bias current <50nA minimizes resistor error |
| 2 - GND | Analog ground reference | Must be low-impedance star point; separates from digital ground to avoid noise coupling into reference output |
| 3 - SHDN | Active-low enable control | Pull low (<0.7V) to enter shutdown (ISHDN ≤500nA); tie to IN for always-on operation |
| 4 - IN | Supply input | Accepts 2.5V–5.5V; requires 0.1µF ceramic bypass capacitor to GND for PSRR optimization |
| 5 - OUT | Precision reference output | Delivers regulated voltage; stable with 0.02µF–1µF output capacitance; drives ±5mA load directly |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output (1.184V–5V) | Enables single BOM part to support multiple system voltage rails - reduces inventory and qualification effort |
| 50ppm/°C max tempco (Grade C) | Meets automotive AEC-Q100 Grade 0 thermal stability requirements for under-hood sensor modules |
| ±0.5% initial accuracy | Eliminates need for post-assembly trimming in cost-sensitive portable medical devices |
| 275µA max quiescent current | Extends coin-cell battery life beyond 5 years in wireless sensor nodes operating at 1Hz sampling |
| SOT23-5 package | 0.95mm profile enables placement beneath 0.8mm-thick PCBs in wearable form factors |
Applications
| Portable Medical Sensors | Wireless Sensor Nodes |
|---|---|
Use Scenario: ECG front-end amplifier biasing in handheld patient monitors. IC Role / Device Role / Timing Role: Precision DC reference for 16-bit delta-sigma ADC and op-amp common-mode setting. Use Value: ±0.5% accuracy and 50ppm/°C tempco ensure <±1 LSB error over full operating temperature range without recalibration. |
Use Scenario: Battery-voltage monitoring and analog sensor conditioning in LoRaWAN environmental nodes. IC Role / Device Role / Timing Role: Stable excitation source for resistive humidity/temperature bridges and ADC reference. Use Value: 275µA quiescent current and 500nA shutdown mode extend CR2032 battery life to >3 years at 10-minute wake intervals. |
| Automotive Cabin Sensors | Industrial Data Acquisition |
Use Scenario: Occupancy detection using MEMS microphone biasing in vehicle infotainment systems. IC Role / Device Role / Timing Role: Low-noise, high-PSRR reference for audio ADC preamplifier stages. Use Value: 0.02µF–1µF capacitive-load stability allows direct integration with ceramic decoupling caps near ASIC inputs. |
Use Scenario: High-accuracy thermocouple cold-junction compensation in modular PLC analog input cards. IC Role / Device Role / Timing Role: Primary voltage reference for 24-bit sigma-delta ADCs requiring <10ppm total error budget. Use Value: 1.184V minimum output enables precise ratiometric scaling with 2.5V or 3.3V system supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6035AAUT+T | Fixed 1.25V output; ±0.2% accuracy; 25ppm/°C tempco; same SOT23-5 package | Lacks adjustability; superior accuracy/tempco but limited to single voltage rail | Select when fixed 1.25V suffices and tighter spec is required - no circuit redesign needed |
| ADR3412ARJZ-R7 | Fixed 1.2V output; ±0.1% accuracy; 30ppm/°C tempco; 6-pin SOT23 package | Higher accuracy, lower tempco, but non-adjustable and incompatible pinout | Choose for metrology-grade 1.2V references where board layout permits 6-pin footprint change |
Compared with MAX6035AAUT+T and ADR3412ARJZ-R7, MAX6037CAUKADJ+T trades absolute accuracy for output flexibility and automotive temperature range - making it optimal for multi-rail portable systems where one reference must serve several analog subsystems.
Availability
MAX6037CAUKADJ+T is available at Aetrix Electronics and suitable for portable medical sensors, wireless sensor nodes, automotive cabin sensors, and industrial data acquisition requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6037CAUKADJ+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 robust reliability.
The MAX6037 family targets battery-powered and automotive-grade systems requiring micropower, adjustable voltage references with shutdown - delivering stable performance from -40°C to +125°C in miniature SOT23 packages.
FAQ
What output voltage range does the MAX6037CAUKADJ+T support?
The MAX6037CAUKADJ+T supports an adjustable output voltage range from 1.184V to 5V, set by an external resistor divider connected between OUT, ADJ, and GND. The internal reference voltage at ADJ is 1.184V, and VOUT = 1.184V × (1 + R1/R2). This range accommodates common system rails including 1.8V, 2.5V, 3.3V, and 5V, making MAX6037CAUKADJ+T suitable for multi-voltage designs without requiring multiple fixed-reference SKUs.
What is the guaranteed initial accuracy and temperature coefficient for MAX6037CAUKADJ+T?
The MAX6037CAUKADJ+T is specified with ±0.5% maximum initial accuracy at +25°C and a maximum temperature coefficient of 50ppm/°C over the full -40°C to +125°C operating range. These Grade C specifications are validated per Maxim's production test flow and ensure predictable drift behavior in automotive and industrial environments - critical for applications like battery fuel gauging and precision sensor signal conditioning where calibration intervals are extended.
How does the shutdown function operate on the MAX6037CAUKADJ+T?
The MAX6037CAUKADJ+T features an active-low shutdown input (SHDN, Pin 3) that disables the reference output and reduces supply current to ≤500nA when pulled below 0.7V. During shutdown, the output impedance rises above 10MΩ, effectively isolating the reference node. To enable normal operation, SHDN must be tied to IN (Pin 4). This function enables MAX6037CAUKADJ+T to support ultra-low-power sleep states in portable instrumentation and wireless edge devices.
What is the minimum and maximum supply voltage for reliable operation of MAX6037CAUKADJ+T?
The MAX6037CAUKADJ+T operates reliably from a supply voltage (IN, Pin 4) of 2.5V to 5.5V. The minimum input voltage depends on the desired output: VIN ≥ VOUT + 0.2V (e.g., ≥3.384V for 3.184V output). At 1mA load, dropout is ≤100mV - allowing MAX6037CAUKADJ+T to maintain regulation even as a single-cell Li-ion battery discharges from 4.2V to 2.6V, supporting uninterrupted operation in compact portable systems.
Which package and pin configuration does MAX6037CAUKADJ+T use?
MAX6037CAUKADJ+T uses a 5-pin SOT23-5 package (package code U5-2, top mark AEJH), with pin 1 = ADJ, pin 2 = GND, pin 3 = SHDN, pin 4 = IN, and pin 5 = OUT. This standardized footprint enables drop-in compatibility with other MAX6037 variants and simplifies PCB design reuse across voltage options. The 2.9mm × 1.6mm × 1.1mm dimensions support high-density layouts in wearables and handheld diagnostics equipment.
MAX6037CAUKADJ+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:
- Adjustable
- Voltage - Output (Min/Fixed):
- 1.184V
- Voltage - Output (Max):
- 5 V
- Current - Output:
- 5 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- 6µVp-p
- Noise - 10Hz to 10kHz:
- 15µVrms
- Voltage - Input:
- 2.5V ~ 5.5V
- Current - Supply:
- 250µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6037CAUKADJ+T FAQ
1.How can I place an order for MAX6037CAUKADJ+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6037CAUKADJ+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 MAX6037CAUKADJ+T reliable?
The price and inventory of MAX6037CAUKADJ+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6037CAUKADJ+T is usually 5 days.
3.What payment methods are accepted for MAX6037CAUKADJ+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6037CAUKADJ+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6037CAUKADJ+T?
MAX6037CAUKADJ+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6037CAUKADJ+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 MAX6037CAUKADJ+T?
For technical support, including MAX6037CAUKADJ+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6037CAUKADJ+T requirements.
6.How does Aetrix verify that MAX6037CAUKADJ+T is sourced from the original manufacturer or authorized distributors?
All MAX6037CAUKADJ+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 MAX6037CAUKADJ+T meets industry standards.
7.What is the process for return or replacement of MAX6037CAUKADJ+T?
All MAX6037CAUKADJ+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6037CAUKADJ+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 MAX6037CAUKADJ+T part is unused and in its original packaging.
Return procedure for MAX6037CAUKADJ+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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