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Analog Devices Inc./Maxim Integrated MAX6035BAUR25+T
- Part No.:
- MAX6035BAUR25+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6035BAUR25+T.pdf
- Description:
- IC VREF SERIES 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,331
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Product details
Overview
MAX6035BAUR25+T from Analog Devices is a high-voltage, precision micropower series-mode voltage reference delivering 2.5V output with ±0.5% initial accuracy, 65ppm/°C max temperature coefficient (–40°C to +85°C), and 95µA max quiescent current. It operates from 4.9V to 33V supply and sources up to 10mA while sinking 2mA - ideal for Li⁺ battery chargers and 12-bit data-acquisition systems where supply independence and space-constrained layout are critical.
For engineers reviewing the MAX6035BAUR25+T datasheet, MAX6035BAUR25+T pinout, MAX6035BAUR25+T application, or MAX6035BAUR25+T equivalent, this page delivers verified specifications, SOT23-3 terminal mapping, real-world load/line regulation behavior, thermal hysteresis (135ppm), and direct alternatives for industrial control loops and portable test equipment.
Technical Context
The MAX6035BAUR25+T employs a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve low drift across –40°C to +125°C operation. Its internal compensation eliminates need for external capacitors, yet it remains stable with up to 5µF capacitive loads - enabling robust performance in noisy industrial environments.
Unlike shunt references, this series-mode device draws supply current virtually independent of VIN (ΔIIN/ΔVIN ≤ 0.7µA/V), avoids wasteful biasing, and supports wide input range (4.9V–33V) without external resistor - simplifying design for high-supply-voltage sensor signal chains and isolated power monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5V ±0.5% (max initial error = ±12.5mV at +25°C) |
| Tempco (–40°C to +85°C) | 65ppm/°C (max output drift = ±5.2mV over 80°C span) |
| Quiescent Current | 95µA max (enables >10-year battery life in 10µA-sleep systems) |
| Supply Range | 4.9V to 33V (supports direct connection to 24V industrial rails) |
| Load Drive | Sources 10mA / sinks 2mA (drives ADC reference inputs and op-amp bias networks) |
| Capacitive Load Stability | Stable with 0–5µF (eliminates mandatory output capacitor; saves PCB area) |
| Line Regulation | 24µV/V max (output changes <240µV over 10V input swing) |
Pinout & Package
MAX6035BAUR25+T is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA, footprint code U3-1), with exposed pad not electrically connected. The package measures 2.9mm × 1.6mm × 1.1mm and supports reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Positive Supply Input | Accepts 4.9V–33V; supplies internal regulator and load current path |
| 2 (OUT) | Precision Reference Output | 2.5V regulated node; connects directly to ADC REF+, DAC VREF, or op-amp gain-setting network |
| 3 (GND) | Analog Ground Return | Low-impedance return for reference output and internal circuitry; must tie to clean system AGND |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Internally compensated architecture eliminates mandatory output capacitor - reduces BOM count and board area by ≥1 component |
| Supply-independent quiescent current | 95µA max across full 4.9V–33V range - enables consistent battery runtime regardless of input rail sag or boost converter variation |
| High load drive capability | 10mA source / 2mA sink - directly drives SAR ADC reference inputs and multi-channel instrumentation amplifiers without buffer op-amps |
| Wide operating temperature | Specified from –40°C to +125°C - qualified for under-hood automotive sensors and industrial motor control enclosures |
| Low thermal hysteresis | 135ppm typical - ensures repeatable reference voltage after thermal cycling in field-deployed equipment |
Applications
| 4–20mA Industrial Control Loops | Li⁺ Battery Chargers |
|---|---|
Use Scenario: Precision current-loop transmitter using DAC + op-amp to generate 4–20mA output proportional to sensor reading. IC Role / Device Role / Timing Role: Provides stable 2.5V reference for DAC full-scale setting and op-amp gain calibration. Use Value: 65ppm/°C tempco ensures loop accuracy stays within 0.1% over –40°C to +85°C ambient - meeting IEC 61000-6-2 immunity requirements. |
Use Scenario: Constant-current/constant-voltage charging circuit for single-cell Li⁺ batteries in portable medical devices. IC Role / Device Role / Timing Role: Sets precise 2.5V threshold for voltage regulation stage and battery voltage monitoring comparator. Use Value: 95µA max supply current minimizes standby drain; 33V max input allows direct connection to unregulated wall adapters. |
| 12-Bit A/D and D/A Converters | Digital Multimeters |
Use Scenario: High-resolution data acquisition module sampling thermocouples and strain gauges with 12-bit SAR ADC. IC Role / Device Role / Timing Role: Supplies reference voltage to ADC's VREF pin; defines LSB size (2.5V/4096 ≈ 610µV). Use Value: ±0.5% initial accuracy + 65ppm/°C drift limits total INL error to <±1.5 LSB across industrial temperature range. |
Use Scenario: Handheld digital multimeter measuring DC voltage, resistance, and continuity with auto-ranging front-end. IC Role / Device Role / Timing Role: Reference for internal 3½-digit ADC and precision voltage divider scaling network. Use Value: Stable 2.5V output with <24µV/V line regulation ensures accurate 200mV–200V ranges without recalibration during battery voltage decay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6035AAUR25+T | ±0.2% initial accuracy, 25ppm/°C tempco - tighter specs but higher cost | Better suited for 14-bit+ converters or metrology-grade instruments requiring <1 LSB error | Select when long-term stability and lower drift outweigh cost sensitivity |
| ADR3425ARJZ-R7 | ±0.1% initial accuracy, 10ppm/°C tempco, 4.5V–36V supply, 85µA max IQ | Requires 1µF output capacitor for stability; larger SOIC-8 footprint vs. SOT23-3 | Choose for ultra-high-precision systems where board space is less constrained than power budget |
Compared with MAX6035AAUR25+T, the MAX6035BAUR25+T trades 0.3% initial accuracy and +40ppm/°C tempco for lower unit cost and identical SOT23-3 footprint; versus ADR3425ARJZ-R7, it offers capacitor-free operation and smaller size but with relaxed accuracy - making it optimal for cost-sensitive, space-constrained industrial sensing.
Availability
MAX6035BAUR25+T is available at Aetrix Electronics and suitable for 4–20mA industrial control loops, Li⁺ battery chargers, and 12-bit data-acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6035BAUR25+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX6035 family was designed for high-supply-voltage, micropower precision reference applications in space- and power-constrained systems - emphasizing supply independence, capacitor-free stability, and extended temperature operation.
FAQ
What is the maximum input voltage rating for MAX6035BAUR25+T?
The absolute maximum input voltage for MAX6035BAUR25+T is +36V referenced to GND. Its operational supply range is specified from 4.9V to 33V - supporting direct interface with 24V industrial buses and unregulated wall adapters without external regulators. Exceeding 36V risks permanent damage per Absolute Maximum Ratings.
Does MAX6035BAUR25+T require an output capacitor for stability?
No, MAX6035BAUR25+T does not require an output capacitor for stability. It is internally compensated and guaranteed stable with 0–5µF capacitive loads. Adding ≥0.1µF improves transient response in step-load applications but is optional - a key advantage for ultra-compact PCB layouts.
What is the load current capability of MAX6035BAUR25+T?
MAX6035BAUR25+T can source up to 10mA and sink up to 2mA while maintaining output accuracy within specification. This allows direct driving of ADC reference inputs, op-amp bias networks, and small logic interfaces without external buffers - verified across –40°C to +125°C.
How does the temperature coefficient of MAX6035BAUR25+T compare to MAX6035AAUR25+T?
MAX6035BAUR25+T has a max temperature coefficient of 65ppm/°C (–40°C to +85°C), whereas MAX6035AAUR25+T is rated at 25ppm/°C. This reflects a deliberate accuracy–cost trade-off: the 'B' grade meets requirements for 12-bit systems, while the 'A' grade targets 14-bit+ precision applications.
Is MAX6035BAUR25+T pin-compatible with other MAX6035 variants in SOT23-3?
Yes, all MAX6035 variants in the SOT23-3 package (including MAX6035AAUR25+T, MAX6035BAUR30+T, and MAX6035BAUR50+T) share identical pinout: Pin 1 = IN, Pin 2 = OUT, Pin 3 = GND. This allows drop-in replacement across output voltages and accuracy grades without PCB redesign.
MAX6035BAUR25+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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:
- 10 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 75ppm/°C
- Noise - 0.1Hz to 10Hz:
- 21µVp-p
- Noise - 10Hz to 10kHz:
- 20µVrms
- Voltage - Input:
- 4.4V ~ 33V
- Current - Supply:
- 95µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6035BAUR25+T FAQ
1.How can I place an order for MAX6035BAUR25+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6035BAUR25+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 MAX6035BAUR25+T reliable?
The price and inventory of MAX6035BAUR25+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6035BAUR25+T is usually 5 days.
3.What payment methods are accepted for MAX6035BAUR25+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6035BAUR25+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6035BAUR25+T?
MAX6035BAUR25+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6035BAUR25+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 MAX6035BAUR25+T?
For technical support, including MAX6035BAUR25+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6035BAUR25+T requirements.
6.How does Aetrix verify that MAX6035BAUR25+T is sourced from the original manufacturer or authorized distributors?
All MAX6035BAUR25+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 MAX6035BAUR25+T meets industry standards.
7.What is the process for return or replacement of MAX6035BAUR25+T?
All MAX6035BAUR25+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6035BAUR25+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 MAX6035BAUR25+T part is unused and in its original packaging.
Return procedure for MAX6035BAUR25+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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