My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6037AAUK25
- Part No.:
- MAX6037AAUK25
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6037AAUK25.pdf
- Description:
- LOW-POWER, FIXED REFERENCE
- Quantity:
- Payment:
- Shipping:
Inventory:469
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6037AAUK25 from Maxim Integrated is a low-dropout, micropower series-mode voltage reference with fixed 2.5V output, ±0.2% initial accuracy (A grade), 25ppm/°C max temperature coefficient, and active-low shutdown consuming ≤500nA. It operates from 2.7V to 5.5V input, delivers ±5mA load current, and supports capacitive loads from 0.02µF to 1µF - ideal for precision ADC/DAC biasing in battery-powered medical sensors.
For engineers reviewing the MAX6037AAUK25 datasheet, MAX6037AAUK25 pinout, MAX6037AAUK25 application, or MAX6037AAUK25 equivalent, this page provides verified circuit role (precision 2.5V reference), package mapping (SOT23-5), thermal stability data, shutdown timing, and real-world load regulation behavior under automotive temperature conditions (-40°C to +125°C).
Technical Context
The MAX6037AAUK25 uses a bandgap-based series-mode architecture with internal trimming for high initial accuracy and low thermal drift. Its shutdown logic is active-low and fully specified across the full supply range (2.7V–5.5V), with guaranteed VENL ≤ 0.75V and VENH ≥ 2.0V.
It features a low-output-impedance buffer capable of sourcing/sinking 5mA while maintaining <0.036%/mA load regulation (1mA–5mA sourcing) and stable operation into 1µF ceramic capacitors - enabling direct interface with SAR ADC reference inputs and low-noise analog front-ends without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±0.2% at +25°C - enables 16-bit ADC full-scale accuracy without calibration |
| Tempco | ≤25ppm/°C - ensures ≤±312.5ppm (±0.00078V) drift over -40°C to +125°C |
| Quiescent Current | 190–275µA - allows >1-year runtime on coin-cell batteries in portable diagnostics |
| Shutdown Current | ≤500nA - reduces system standby power by >380× vs. active mode |
| Dropout Voltage | ≤100mV at 1mA - supports operation down to 2.6V input in Li-ion single-cell systems |
| Load Drive | ±5mA sourcing/sinking - directly drives 12-bit DAC reference inputs and op-amp bias networks |
| Noise (0.1–10Hz) | 14µVP-P - contributes <0.00056% of 2.5V FS, suitable for 16-bit precision systems |
Pinout & Package
MAX6037AAUK25 is housed in a lead-free 5-pin SOT23-5 package (U5-2 code, top mark AEJG), with 0.95mm pitch, 2.9mm × 1.6mm footprint, and −40°C to +125°C automotive qualification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - I.C. | Internally connected | No external connection required; reserved for fixed-output variants only |
| 2 - GND | Analog ground reference | Must be low-impedance node tied to clean system AGND plane |
| 3 - SHDN | Active-low enable control | Pull ≤0.75V to disable; connect to IN (≥2.7V) for always-on operation |
| 4 - IN | Supply input (2.7–5.5V) | Requires 0.1µF ceramic bypass capacitor to GND within 2mm |
| 5 - OUT | Precision 2.5V reference output | Stable with 0.02–1µF ceramic output capacitor; drives ADC REF pins directly |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.5V output with A-grade accuracy | ±0.2% initial error eliminates need for system-level trimming in portable instrumentation |
| Low 25ppm/°C tempco | Meets 16-bit LSB stability requirement (<±0.00078V) across full automotive temperature range |
| 100mV max dropout at 1mA | Enables use with partially discharged 2.7V Li-ion cells or regulated 3.0V rails with margin |
| 0.02–1µF capacitive-load stability | Supports standard 0.1µF X7R ceramics - no ESR tuning or external compensation needed |
| 5mA bidirectional load capability | Directly sources/sinks reference current for dual-supply op-amps and rail-to-rail ADC drivers |
Applications
| Portable Medical Sensors | Industrial Data Acquisition |
|---|---|
|
Use Scenario: Battery-powered ECG front-end with 16-bit SAR ADC sampling at 1kSPS. IC Role / Device Role / Timing Role: Provides stable 2.5V reference for ADC conversion and op-amp biasing. Use Value: ±0.2% initial accuracy and 25ppm/°C tempco ensure <±1 LSB error over temperature without recalibration. |
Use Scenario: DIN-rail mounted PLC analog input module measuring 4–20mA loops. IC Role / Device Role / Timing Role: Precision reference for isolated ΣΔ ADC and sensor signal conditioning. Use Value: 5mA drive capability powers internal gain-setting resistors and reference buffers without added ICs. |
| Wireless Sensor Nodes | Automotive Cabin Monitoring |
|
Use Scenario: LoRaWAN-enabled temperature/humidity node with ultra-low-power sleep cycles. IC Role / Device Role / Timing Role: Reference source for microcontroller ADC during wake-up bursts. Use Value: 500nA shutdown current extends 10-year battery life; fast 2.2ms turn-on settling enables rapid measurement. |
Use Scenario: Occupant detection system using capacitive sensing and ambient light measurement. IC Role / Device Role / Timing Role: Stable reference for multi-channel ADC monitoring cabin environment. Use Value: −40°C to +125°C operation and 500ppm thermal hysteresis guarantee repeatable readings after thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3425BRJZ-R7 | 2.5V, ±0.1% initial accuracy, 10ppm/°C, 3.5µA quiescent current, no shutdown | Lacks shutdown; higher supply current limits battery life in intermittent-sampling systems | Choose when lowest tempco and highest initial accuracy are critical, and shutdown is not required |
| REF3025AIDBZR | 2.5V, ±0.2% initial accuracy, 50ppm/°C, 50µA quiescent current, no shutdown | Higher tempco degrades 16-bit performance above 60°C; no shutdown disables low-power modes | Choose for cost-sensitive industrial designs where 50ppm/°C is acceptable and continuous operation is assumed |
Compared with ADR3425BRJZ-R7 and REF3025AIDBZR, MAX6037AAUK25 uniquely combines A-grade accuracy, automotive tempco, sub-µA shutdown, and SOT23-5 size - making it optimal for space-constrained, battery-operated precision systems requiring guaranteed performance across extreme temperatures.
Availability
MAX6037AAUK25 is available at Aetrix Electronics and suitable for portable medical sensors, industrial data acquisition modules, and wireless sensor nodes requiring stable component supply with automotive-grade reliability and long-term lifecycle support.
Supply support for MAX6037AAUK25 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 high-performance analog and mixed-signal ICs for precision, power, and interface applications in demanding environments.
The MAX6037 family was engineered specifically for battery-powered and automotive systems needing ultra-low-quiescent-current, high-accuracy voltage references with robust thermal stability and integrated shutdown control.
FAQ
What is the maximum input voltage for MAX6037AAUK25?
The MAX6037AAUK25 supports an input voltage range of 2.7V to 5.5V, as specified in its electrical characteristics table. Operation above 5.5V violates absolute maximum ratings and may cause permanent damage. The minimum input depends on output load but must exceed VOUT + 0.2V (i.e., ≥2.7V for 2.5V output).
Does MAX6037AAUK25 require an output capacitor, and what value is recommended?
Yes, MAX6037AAUK25 requires an output capacitor for stability. The datasheet specifies a stable capacitive-load range of 0.02µF to 1µF. A 0.1µF X7R ceramic capacitor placed within 2mm of the OUT and GND pins is the recommended default for general-purpose use and noise reduction.
How does the shutdown function work on MAX6037AAUK25?
MAX6037AAUK25 features an active-low shutdown input (SHDN pin). Pulling SHDN ≤0.75V disables the reference output and reduces supply current to ≤500nA. For normal operation, connect SHDN to the IN supply rail (≥2.7V). The logic thresholds are guaranteed across the full operating temperature range.
Can MAX6037AAUK25 drive a 10kΩ load directly?
Yes. With a 2.5V output and ±5mA load capability, MAX6037AAUK25 can drive a 10kΩ load (250µA) with negligible error - well within its 0.036%/mA load regulation spec. Output voltage deviation will be <0.009mV, far below 16-bit LSB (38.1µV) at 2.5V full scale.
Is MAX6037AAUK25 qualified for automotive applications?
Yes. MAX6037AAUK25 is explicitly specified over the −40°C to +125°C operating temperature range and packaged in a lead-free SOT23-5 (U5-2) with automotive-grade reliability testing per Maxim's qualification standards - making it suitable for cabin electronics, ADAS sensors, and body control modules.
MAX6037AAUK25 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):
- 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 FAQ
1.How can I place an order for MAX6037AAUK25 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6037AAUK25 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 reliable?
The price and inventory of MAX6037AAUK25 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6037AAUK25 is usually 5 days.
3.What payment methods are accepted for MAX6037AAUK25?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6037AAUK25 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6037AAUK25?
MAX6037AAUK25 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6037AAUK25 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?
For technical support, including MAX6037AAUK25 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6037AAUK25 requirements.
6.How does Aetrix verify that MAX6037AAUK25 is sourced from the original manufacturer or authorized distributors?
All MAX6037AAUK25 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 meets industry standards.
7.What is the process for return or replacement of MAX6037AAUK25?
All MAX6037AAUK25 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6037AAUK25, 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 part is unused and in its original packaging.
Return procedure for MAX6037AAUK25:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6037AAUK25 Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
