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Analog Devices Inc./Maxim Integrated MAX6033CAUT25+T
- Part No.:
- MAX6033CAUT25+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
MAX6033CAUT25+T.pdf
- Description:
- IC VREF SERIES 0.1% SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,812
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Product details
Overview
MAX6033CAUT25+T from Maxim Integrated is a precision 2.5V series voltage reference IC with ±0.10% initial accuracy, 40ppm/°C max temperature coefficient (−40°C to +125°C), and 200mV max dropout voltage. It delivers ultra-low 16µVP-P (0.1Hz–10Hz) noise and 40µA quiescent current, making it suitable for high-resolution ADC/DAC biasing in automotive-grade instrumentation.
For engineers reviewing the MAX6033CAUT25+T datasheet, MAX6033CAUT25+T pinout, MAX6033CAUT25+T application, or MAX6033CAUT25+T equivalent, key selection criteria include automotive temperature range support, low-noise performance at 2.5V output, stable operation with up to 100µF capacitive loads, and compatibility with single-supply high-precision data converters.
Technical Context
The MAX6033CAUT25+T employs laser-trimmed thin-film resistors and post-package trimming to achieve ±0.10% initial accuracy and 40ppm/°C tempco over −40°C to +125°C. Its bandgap core ensures low-noise operation and excellent long-term stability (40ppm/1000hr).
This 6-pin SOT23 series reference features dual-output architecture (OUTF/OUTS) for Kelvin sensing, enabling precise regulation under varying load conditions. It operates from 2.7V to 12.6V input, supports 15mA output sourcing, and maintains 0.001mV/mA load regulation at +25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±0.0025V at +25°C - tight tolerance enables direct interface with 14-bit+ DACs without calibration. |
| Initial Accuracy | ±0.10% - guarantees output deviation ≤ ±2.5mV at room temperature, reducing system-level trimming effort. |
| Tempco | 40ppm/°C max (−40°C to +125°C) - limits drift to ±125µV over full automotive range, critical for stable sensor front-ends. |
| Noise (0.1–10Hz) | 16µVP-P - low flicker noise preserves SNR in precision measurement chains feeding 20-bit ADCs. |
| Dropout Voltage | 200mV max at 1mA - allows operation from 2.7V supply while maintaining 2.5V output, ideal for low-voltage battery systems. |
| Quiescent Current | 40µA typical - minimizes standby power in always-on automotive modules and portable instrumentation. |
| Load Regulation | 0.001mV/mA at +25°C - ensures <10µV shift per mA load change, essential for dynamic current-sense applications. |
| Capacitive Load Stability | Stable with 0.1µF to 100µF - accommodates wide-range bypassing for EMI suppression without oscillation risk. |
Pinout & Package
MAX6033CAUT25+T is housed in a RoHS-compliant 6-pin SOT23 package (U6FH+6 outline, land pattern 90-0175), optimized for space-constrained automotive PCBs and industrial sensors.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3 | I.C. (Internally Connected) | Not externally usable - internal connection only; must remain unconnected on PCB. |
| 2 | GND | Analog ground reference - requires low-impedance connection to system AGND plane for noise immunity. |
| 4 | IN | Positive supply input - accepts 2.7V–12.6V; decoupling with 0.1µF ceramic capacitor near pin improves line rejection. |
| 5 | OUTF | Force output - drives load; must be shorted to OUTS near device for Kelvin sensing and optimal regulation. |
| 6 | OUTS | Sense input - monitors feedback point at load; enables remote sensing to cancel trace IR drop in precision systems. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-output Kelvin architecture (OUTF/OUTS) | Eliminates PCB trace resistance error - maintains ±0.001% regulation accuracy at remote load points. |
| Laser-trimmed thin-film resistors | Enables ±0.10% initial accuracy without external calibration - reduces test time and BOM count in production. |
| Low 16µVP-P (0.1–10Hz) noise | Preserves ENOB in 20-bit SAR ADCs - avoids noise-induced code spread in high-dynamic-range measurements. |
| Stable with 100µF capacitive loads | Supports large bulk capacitance for transient suppression in motor-control feedback loops without instability. |
| Automotive temperature range | Rated for −40°C to +125°C operation - qualified for engine control units, ADAS sensors, and under-hood electronics. |
| 40µA quiescent current | Extends battery life in portable diagnostic tools - draws <1µW from 2.7V supply at idle. |
Applications
| High-Accuracy Industrial Control | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Precision analog input module for PLC analog I/O cards measuring 4–20mA loop signals. IC Role / Device Role / Timing Role: Provides stable 2.5V reference for 24-bit delta-sigma ADC and excitation for RTD bridges. Use Value: 40ppm/°C tempco ensures <±0.02% full-scale error over cabinet temperature swings, eliminating recalibration. |
Use Scenario: Front-end reference for MEMS pressure sensor in brake-by-wire ECUs. IC Role / Device Role / Timing Role: Supplies excitation and reference for ratiometric signal chain operating at −40°C to +125°C. Use Value: Dual OUTF/OUTS outputs compensate for PCB thermal gradients, maintaining <0.05% gain error across temperature. |
| Hand-Held Test Equipment | Hard-Disk Drive Servo Control |
Use Scenario: Portable multimeter with 6½-digit resolution requiring ultra-low-drift voltage reference. IC Role / Device Role / Timing Role: Primary reference for auto-ranging DMM ADC and internal calibration source. Use Value: 16µVP-P noise and 40ppm/°C tempco enable sub-µV resolution stability over 8-hour field use. |
Use Scenario: Reference for voice-coil motor position feedback in enterprise HDD actuator drivers. IC Role / Device Role / Timing Role: Supplies precision bias to servo amplifier and ADC sampling the position error signal. Use Value: 0.001mV/mA load regulation prevents head-position jitter during rapid seek operations with varying current draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3425RTET | 2.5V, ±0.05% initial accuracy, 12ppm/°C tempco, 65µA IQ, SOT23-6 | Higher accuracy and lower tempco but higher quiescent current; not AEC-Q200 qualified | Preferred for non-automotive lab equipment where ultra-low drift outweighs power budget constraints. |
| ADR4525BRZ | 2.5V, ±0.02% initial accuracy, 3ppm/°C tempco, 950µA IQ, SOIC-8 | Superior stability and noise (1.8µVP-P) but 24× higher supply current and larger package | Selected for metrology-grade instruments where size and power are secondary to absolute precision. |
Compared with REF3425RTET and ADR4525BRZ, the MAX6033CAUT25+T offers the best balance of automotive qualification, ultra-low power (40µA), and SOT23-6 footprint-making it optimal for space- and power-constrained embedded systems requiring robustness over extreme temperature ranges.
Availability
MAX6033CAUT25+T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, and portable test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6033CAUT25+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 high-performance analog and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX6033 family delivers ultra-precise, low-dropout series references optimized for high-resolution data conversion systems operating in harsh environments - specifically targeting automotive and industrial applications needing guaranteed performance from −40°C to +125°C.
FAQ
What is the maximum capacitive load the MAX6033CAUT25+T can drive while remaining stable?
The MAX6033CAUT25+T is stable with output capacitive loads ranging from 0.1µF to 100µF. This wide range allows designers to select appropriate bulk and bypass capacitance for EMI filtering and transient response without risking oscillation - a key advantage over shunt references that require strict capacitor limits. The MAX6033CAUT25+T maintains phase margin across this entire range due to its internal compensation design.
Does the MAX6033CAUT25+T support Kelvin sensing, and how is it implemented?
Yes, the MAX6033CAUT25+T implements Kelvin sensing via separate OUTF (force) and OUTS (sense) pins. OUTF supplies current to the load, while OUTS connects directly to the load's reference node to close the feedback loop. Shorting OUTF to OUTS near the device ensures accurate local regulation; routing OUTS to the remote load point cancels voltage drop in PCB traces, preserving reference accuracy. This architecture is integral to the MAX6033CAUT25+T's 0.001mV/mA load regulation spec.
What is the guaranteed temperature coefficient specification for MAX6033CAUT25+T over the full automotive range?
The MAX6033CAUT25+T is guaranteed to maintain ≤40ppm/°C temperature coefficient over the full −40°C to +125°C automotive operating range. This value is specified in the Electrical Characteristics table under "Output Voltage Temperature Coefficient" for MAX6033C grade at TA = −40°C to +125°C. It reflects worst-case drift across temperature cycling, ensuring predictable performance in under-hood and transmission-control applications.
Can the MAX6033CAUT25+T operate from a 3.3V supply while delivering a stable 2.5V output?
Yes, the MAX6033CAUT25+T supports input voltages from 2.7V to 12.6V and has a maximum dropout voltage of 200mV at 1mA load. With a 3.3V supply, the minimum headroom required is 0.2V, leaving 0.8V margin - well within specification. At 3.3V input, the MAX6033CAUT25+T delivers full 2.5V output with guaranteed accuracy, noise, and regulation performance across temperature.
Is the MAX6033CAUT25+T qualified for automotive applications, and what evidence supports this?
Yes, the MAX6033CAUT25+T is explicitly rated for the automotive temperature range (−40°C to +125°C), confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables. Its SOT23 package carries RoHS-compliant marking ("+" suffix), and the datasheet lists "Automotive" in Applications. While full AEC-Q200 stress test reports are not included in this document, the guaranteed parametric performance across −40°C to +125°C and production testing at temperature extremes confirm its suitability for automotive use cases like sensor signal conditioning and ECU power rails.
MAX6033CAUT25+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SOT-23-6
- 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:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 40ppm/°C
- Noise - 0.1Hz to 10Hz:
- 16µVp-p
- Noise - 10Hz to 10kHz:
- 12µVrms
- Voltage - Input:
- 2.7V ~ 12.6V
- Current - Supply:
- 85µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6033CAUT25+T FAQ
1.How can I place an order for MAX6033CAUT25+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6033CAUT25+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 MAX6033CAUT25+T reliable?
The price and inventory of MAX6033CAUT25+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6033CAUT25+T is usually 5 days.
3.What payment methods are accepted for MAX6033CAUT25+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6033CAUT25+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6033CAUT25+T?
MAX6033CAUT25+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6033CAUT25+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 MAX6033CAUT25+T?
For technical support, including MAX6033CAUT25+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6033CAUT25+T requirements.
6.How does Aetrix verify that MAX6033CAUT25+T is sourced from the original manufacturer or authorized distributors?
All MAX6033CAUT25+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 MAX6033CAUT25+T meets industry standards.
7.What is the process for return or replacement of MAX6033CAUT25+T?
All MAX6033CAUT25+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6033CAUT25+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 MAX6033CAUT25+T part is unused and in its original packaging.
Return procedure for MAX6033CAUT25+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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