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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:
- IC VREF SERIES 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,615
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Product details
Overview
The MAX6035AAUR25+T from Analog Devices is a high-voltage, precision micropower series voltage reference delivering a stable 2.5V output with ±0.2% initial accuracy and 25ppm/°C max temperature coefficient over –40°C to +125°C. It draws only 73µA quiescent current, sources up to 10mA, and operates from 4.9V to 33V supply - ideal for Li⁺ battery chargers and 12-bit data converters where low power and high stability are critical.
For engineers reviewing the MAX6035AAUR25+T datasheet, MAX6035AAUR25+T pinout, MAX6035AAUR25+T application, or MAX6035AAUR25+T equivalent, this page delivers verified specifications, SOT23-3 terminal mapping, real-world load/line regulation behavior, capacitive-load stability up to 5µF, and validated alternatives for industrial control loops and portable instrumentation.
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 25ppm/°C tempco and ±0.2% initial accuracy. Its internal compensation eliminates need for external output capacitors while maintaining stability with up to 5µF capacitive loads.
Unlike shunt references, it features supply-current independence (73µA typ, <0.7µA/V variation) and no external bias resistor requirement. Dropout is 2.25V at 10mA load, enabling operation down to VIN = 4.9V for 2.5V output - critical for wide-input industrial supplies and battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±0.2% (±5mV) at +25°C - ensures 12-bit ADC full-scale error <½ LSB over temperature |
| Tempco (–40°C to +85°C) | 25ppm/°C max - guarantees <±0.0625% output drift across commercial range |
| Quiescent Current | 73µA typical, ≤95µA max - enables >1-year battery life in 10µA-sleep IoT sensors |
| Supply Range | 4.9V to 33V - supports direct connection to 12V/24V industrial rails and unregulated battery inputs |
| Load Drive | Sources 10mA / sinks 2mA - drives ADC reference inputs, op-amp bias networks, and DAC buffers without external gain stages |
| Capacitive Load Stability | Stable with 0–5µF output capacitance - eliminates need for layout-constrained compensation networks |
| Line Regulation | 24µV/V max - adds <0.001% error per volt of input variation, critical for noisy switcher-fed systems |
Pinout & Package
MAX6035AAUR25+T is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA, Analog Devices U3-1), with exposed pad not electrically connected. Package dimensions: 2.92mm × 1.6mm × 1.1mm (L × W × H), 0.95mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Positive Supply Input | Accepts 4.9V–33V; internal regulator derives bias - no external resistor required |
| 2 (OUT) | Precision Reference Output | 2.5V ±0.2%, low-noise (21µVP-P, 0.1–10Hz); connects directly to ADC REF+, DAC VREF, or op-amp non-inverting input |
| 3 (GND) | Analog Ground Reference | Low-impedance return path; must be star-connected to system AGND to avoid ground bounce errors |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Internally compensated - saves PCB area and eliminates capacitor-selection risk in space-constrained designs |
| Ultra-low, supply-independent current | 73µA typical, varying <0.7µA/V - enables predictable battery drain modeling across input voltage swings |
| High supply voltage tolerance | Rated to 33V IN - allows direct use with 24V industrial buses and automotive transients without pre-regulation |
| Wide temperature operation | Specified from –40°C to +125°C - qualified for under-hood automotive and factory-floor industrial environments |
| Low thermal hysteresis | 135ppm - minimizes calibration drift after thermal cycling in test equipment and field-deployed meters |
Applications
| 4–20mA Industrial Control Loops | Li⁺ Battery Chargers |
|---|---|
Use Scenario: Precision current-loop transmitter using DAC and op-amp to generate 4–20mA signal proportional to sensor input. IC Role / Device Role / Timing Role: Provides stable 2.5V reference for DAC and current-sense amplifier, defining loop full-scale accuracy. Use Value: 25ppm/°C tempco and ±0.2% initial accuracy ensure loop error stays within ±0.1% over –40°C to +85°C ambient. |
Use Scenario: Constant-current/constant-voltage charging circuit for single-cell Li⁺ batteries with voltage monitoring. IC Role / Device Role / Timing Role: Supplies accurate 2.5V reference to ADC measuring cell voltage and to comparator setting charge termination threshold. Use Value: 73µA quiescent current extends standby time; 33V input rating allows direct connection to 28V adapter inputs. |
| 12-Bit A/D and D/A Converters | Digital Multimeters |
Use Scenario: High-resolution data acquisition system sampling analog sensors with 12-bit SAR ADC. IC Role / Device Role / Timing Role: Serves as primary reference for ADC's internal conversion core and external signal-conditioning amplifiers. Use Value: 21µVP-P (0.1–10Hz) noise and 86dB ripple rejection prevent quantization noise floor degradation. |
Use Scenario: Portable handheld DMM requiring stable reference for autoranging ohms/volts/current measurements. IC Role / Device Role / Timing Role: Delivers 2.5V reference to dual-slope integrator and microcontroller ADC during measurement cycles. Use Value: Stable 5µF capacitive-load drive enables use of large bulk decoupling on shared reference rail without oscillation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3425ARJZ-R7 | 2.5V, ±0.1% initial accuracy, 10ppm/°C max tempco, 12µA quiescent current, SOT23-5 package | Lower power but requires 5-pin layout; tighter accuracy suits 16-bit systems; lower noise (12µVRMS) | Select when ultra-low power (<15µA) and sub-10ppm stability outweigh SOT23-3 footprint constraints |
| REF3025AIDBZR | 2.5V, ±0.2% initial accuracy, 50ppm/°C max tempco, 50µA quiescent current, SOT23-3 package | Same 3-pin footprint; higher tempco limits use to 0°C–70°C commercial grade; lower cost | Choose for cost-sensitive consumer applications where extended temperature range is unnecessary |
Compared with ADR3425ARJZ-R7, MAX6035AAUR25+T offers superior high-temp performance (–40°C to +125°C vs. –40°C to +125°C) and higher supply voltage headroom (33V vs. 5.5V), while REF3025AIDBZR trades tempco and voltage range for lower price and same package - making MAX6035AAUR25+T optimal for ruggedized industrial sensing.
Availability
MAX6035AAUR25+T is available at Aetrix Electronics and suitable for 4–20mA industrial control loops, Li⁺ battery chargers, and 12-bit A/D and D/A converters requiring stable component supply across extended temperature and high-voltage operating conditions.
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
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 specifically for high-supply-voltage, micropower precision reference needs in space-constrained, battery-operated, and harsh-environment systems - emphasizing low drift, wide VIN, and capacitor-free stability.
FAQ
What is the maximum input voltage rating for MAX6035AAUR25+T?
The MAX6035AAUR25+T has an absolute maximum input voltage of +36V, with recommended operating range up to +33V. This allows direct interface with 24V industrial buses and unregulated wall adapters without external regulators - a key advantage over standard 5.5V references.
Does MAX6035AAUR25+T require an external output capacitor for stability?
No, MAX6035AAUR25+T is internally compensated and stable with 0µF output capacitance. It remains stable with capacitive loads up to 5µF, eliminating mandatory external capacitors and simplifying layout in space-critical applications like portable DMMs and sensor nodes.
What is the guaranteed initial accuracy of MAX6035AAUR25+T over temperature?
MAX6035AAUR25+T guarantees ±0.2% initial accuracy at +25°C and maintains 25ppm/°C max temperature coefficient from –40°C to +85°C - meaning total output error stays within ±0.0625% across that range, critical for calibrated instrumentation.
Can MAX6035AAUR25+T sink current, and how much?
Yes, MAX6035AAUR25+T can sink up to 2mA while maintaining regulation. This enables active pull-down in precision current-source circuits and compatibility with op-amp feedback configurations requiring bidirectional reference loading - unlike many fixed-reference ICs limited to sourcing only.
How does the supply current of MAX6035AAUR25+T vary with input voltage?
MAX6035AAUR25+T exhibits near-constant quiescent current: 73µA typical, ≤95µA max, with variation ≤0.7µA/V across 4.9V–33V input. This supply independence enables accurate battery-life estimation and eliminates line-regulation-induced current spikes seen in shunt references.
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:
- 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:
- ±0.2%
- 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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