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Analog Devices Inc./Maxim Integrated MAX6035AAUR25-T
- Part No.:
- MAX6035AAUR25-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6035AAUR25-T.pdf
- Description:
- VOLTAGE REFERENCE
- Quantity:
- Payment:
- Shipping:
Inventory:5,278
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Product details
Overview
MAX6035AAUR25-T from Maxim Integrated is a high-voltage, precision micropower series voltage reference delivering 2.5V output with ±0.2% initial accuracy, 25ppm/°C max temperature coefficient (–40°C to +85°C), and 73µA typical quiescent current. It operates from 4.4V to 33V supply and supports 10mA source / 2mA sink load current in a 3-pin SOT23 package for battery-powered instrumentation and high-accuracy data converters.
For engineers reviewing the MAX6035AAUR25-T datasheet, MAX6035AAUR25-T pinout, MAX6035AAUR25-T application, or MAX6035AAUR25-T equivalent, key selection criteria include ultra-low supply current independence from VIN, no external capacitor requirement, stable operation with up to 5µF capacitive loads, and guaranteed performance across –40°C to +125°C.
Technical Context
The MAX6035AAUR25-T is a three-terminal series-mode voltage reference using proprietary curvature-correction circuitry and laser-trimmed thin-film resistors to achieve low drift. Its internal compensation eliminates need for external stability components while maintaining stability with capacitive loads up to 5µF.
It features supply-independent quiescent current (73µA typ, ≤95µA max) with only 0.7µA/V variation over 4.4V–33V input range, and delivers precise 2.5V output with dropout voltage as low as 1.9V at 10µA load - enabling use in wide-input industrial and automotive power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±0.2% (±5mV) at +25°C - ensures 12-bit ADC accuracy without calibration across full temp range |
| Temp Coefficient | 25ppm/°C max (–40°C to +85°C) - limits drift to <±200µV over 85°C span |
| Quiescent Current | 73µA typ, 95µA max - enables >10-year battery life in 10µA-sleep systems |
| Supply Range | 4.4V to 33V - supports direct connection to unregulated 24V rails or Li+ battery stacks |
| Load Drive | 10mA source / 2mA sink - drives ADC references, DAC bias, and op-amp VREF inputs directly |
| Capacitive Load Stability | Stable with 0–5µF output capacitance - eliminates layout constraints in space-critical PCBs |
| Noise (0.1–10Hz) | 21µVP-P - preserves SNR in 16-bit+ precision measurement front-ends |
Pinout & Package
MAX6035AAUR25-T is housed in a 3-pin SOT23-3 package (package code U3-1), with exposed pad not electrically connected. The device uses standard SOT23 footprint (2.92mm × 1.3mm × 1.02mm height) and is RoHS-compliant when ordered with '+' suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Voltage Supply | Accepts 4.4V–33V unregulated input; internally regulates to generate stable 2.5V output |
| 2 (OUT) | Reference Output | Low-impedance 2.5V precision node; capable of sourcing 10mA or sinking 2mA |
| 3 (GND) | Analog Ground Reference | Return path for internal bandgap and output stage; must be tied to clean system ground |
Key Features
| Feature | Design Value |
|---|---|
| Supply-current independence | Quiescent current varies ≤0.7µA/V across full 4.4V–33V input range - eliminates wasted bias current in variable-supply systems |
| No external capacitor required | Fully internally compensated - removes 0.1µF bypass cap and saves >1mm² board area per unit |
| Wide operating temperature | Specified from –40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Low thermal hysteresis | 135ppm typical - minimizes repeatability error after thermal cycling in field-deployed equipment |
| High PSRR | 86dB at 120Hz - rejects ripple from switching supplies feeding the reference input |
Applications
| 4–20mA Industrial Loop | Li+ Battery Charger Monitoring |
|---|---|
Use Scenario: Precision current-loop transmitter conditioning analog sensor signals for remote PLCs. IC Role / Device Role / Timing Role: Provides stable 2.5V reference for DAC output scaling and current-sense amplifier gain setting. Use Value: Enables ±0.1% loop accuracy over –40°C to +85°C ambient with no recalibration. | Use Scenario: Accurate cell-voltage monitoring during CC/CV charging of single-cell Li+ batteries. IC Role / Device Role / Timing Role: Supplies reference to ADC measuring battery voltage and thermistor divider. Use Value: Maintains <±1mV absolute error across full battery voltage range (2.7V–4.2V) and temperature. |
| 12-Bit A/D & D/A Converters | Digital Multimeters |
Use Scenario: Reference source for SAR and sigma-delta ADCs/DACs in portable test gear. IC Role / Device Role / Timing Role: Sets full-scale input range for 12-bit converter; defines LSB step size. Use Value: Limits INL/DNL contribution to <0.5 LSB over temperature - meets EN 61000-4-3 immunity requirements. | Use Scenario: High-stability reference in handheld DMMs requiring 0.1% basic accuracy. IC Role / Device Role / Timing Role: Generates precision 2.5V for auto-ranging attenuator and integrator calibration. Use Value: Delivers long-term stability of 110ppm/1000hr - reduces annual recalibration frequency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF02CSA+ | 8-pin SOIC, ±0.2% initial accuracy, 50ppm/°C max TC, 1.2mA quiescent current | Higher power consumption and larger footprint; requires external decoupling | Select REF02CSA+ only if legacy SOIC layout reuse is mandatory and power budget allows ≥1mA supply draw |
| ADR3425ARJZ-R7 | SOT23-5, ±0.12% initial accuracy, 10ppm/°C max TC, 120µA quiescent current, 5-pin configuration | Includes enable pin and separate VOUT/VSENSE; higher accuracy but higher IQ and cost | Choose ADR3425ARJZ-R7 when sub-10ppm/°C drift is required and enable control justifies extra pin and cost |
Compared with REF02CSA+, MAX6035AAUR25-T reduces supply current by 14× and shrinks package from SOIC-8 to SOT23-3; versus ADR3425ARJZ-R7, it trades 0.08% lower initial accuracy and 15ppm/°C higher TC for 40% lower quiescent current and simpler 3-pin interface.
Availability
MAX6035AAUR25-T is available at Aetrix Electronics and suitable for 4–20mA industrial loops, Li+ battery charger monitoring, and 12-bit A/D and D/A converters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6035AAUR25-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 industrial, automotive, communications, and computing markets.
The MAX6035 family was engineered as a drop-in upgrade to REF02/REF43, targeting space-constrained, battery-operated, and high-voltage industrial systems needing ultra-low-power, high-accuracy voltage references.
FAQ
What is the maximum input voltage rating for MAX6035AAUR25-T?
The MAX6035AAUR25-T has an absolute maximum input voltage of +36V referenced to GND. Its operational supply range is specified from 4.4V to 33V, with line regulation tested up to 33V. Exceeding 36V risks permanent damage per Absolute Maximum Ratings.
Does MAX6035AAUR25-T require an external output capacitor for stability?
No, MAX6035AAUR25-T is internally compensated and does not require an external output capacitor for stability. It remains stable with capacitive loads from 0 to 5µF, making it ideal for space-constrained designs where board area is at a premium.
What is the temperature range over which MAX6035AAUR25-T maintains its 25ppm/°C temperature coefficient specification?
The 25ppm/°C maximum temperature coefficient for MAX6035AAUR25-T applies over the –40°C to +85°C range. Over the full –40°C to +125°C operating range, the max TC is 30ppm/°C - confirmed in Electrical Characteristics tables for MAX6035_AUR25.
Can MAX6035AAUR25-T sink current, and if so, how much?
Yes, MAX6035AAUR25-T can sink up to 2mA of load current. This capability allows it to drive reference inputs of op-amps or ADCs that draw small reverse currents, or to serve as a precision shunt in active filter configurations without external components.
How does the supply current of MAX6035AAUR25-T vary with input voltage?
MAX6035AAUR25-T exhibits near-constant quiescent current: typical 73µA, max 95µA, with variation ≤0.7µA/V across its 4.4V–33V input range. This supply independence eliminates dynamic power waste seen in shunt references and simplifies power budgeting.
MAX6035AAUR25-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 30ppm/°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
MAX6035AAUR25-T FAQ
1.How can I place an order for MAX6035AAUR25-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6035AAUR25-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 MAX6035AAUR25-T reliable?
The price and inventory of MAX6035AAUR25-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6035AAUR25-T is usually 5 days.
3.What payment methods are accepted for MAX6035AAUR25-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6035AAUR25-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6035AAUR25-T?
MAX6035AAUR25-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6035AAUR25-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 MAX6035AAUR25-T?
For technical support, including MAX6035AAUR25-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6035AAUR25-T requirements.
6.How does Aetrix verify that MAX6035AAUR25-T is sourced from the original manufacturer or authorized distributors?
All MAX6035AAUR25-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 MAX6035AAUR25-T meets industry standards.
7.What is the process for return or replacement of MAX6035AAUR25-T?
All MAX6035AAUR25-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6035AAUR25-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 MAX6035AAUR25-T part is unused and in its original packaging.
Return procedure for MAX6035AAUR25-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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