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Analog Devices Inc./Maxim Integrated MAX6035ESA25+T
- Part No.:
- MAX6035ESA25+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6035ESA25+T.pdf
- Description:
- IC VREF SERIES 0.2% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,236
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Product details
Overview
The MAX6035ESA25+T from Analog Devices is a high-voltage, precision micropower series voltage reference delivering 2.5V output with ±0.2% initial accuracy, 40ppm/°C max temperature coefficient (–40°C to +85°C), and 95µA max quiescent current in an 8-pin SO package. It replaces legacy references like REF02/REF43 with lower power and improved thermal stability, serving as a stable reference for 12-bit ADCs, portable data-acquisition systems, and industrial 4–20mA loops.
For engineers reviewing the MAX6035ESA25+T datasheet, MAX6035ESA25+T pinout, MAX6035ESA25+T application, or MAX6035ESA25+T equivalent, key selection criteria include supply voltage range (up to 33V), load regulation (≤350 µV/mA sourcing), capacitive-load stability (up to 5µF), and operating temperature range (–40°C to +85°C).
Technical Context
The MAX6035ESA25+T is a three-terminal series-mode voltage reference featuring proprietary curvature-correction circuitry and laser-trimmed thin-film resistors. Its internal compensation eliminates need for external output capacitors while maintaining stability with up to 5µF capacitive loads.
It operates across a wide input range (4.4V to 33V), delivers 10mA sourcing / 2mA sinking capability, and exhibits supply-current independence - varying only 0.7µA/V over VIN - enabling efficient battery-powered operation without wasted bias current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±0.2% (±5mV) at +25°C - ensures 12-bit ADC full-scale accuracy without calibration |
| Tempco (–40°C to +85°C) | 40ppm/°C max - limits drift to ≤±80µV over full industrial range |
| Quiescent Current | 95µA max - enables >1-year battery life in 10µA-average-power systems |
| Supply Range | 4.4V to 33V - supports direct connection to unregulated 12V/24V rails or Li+ battery stacks |
| Load Regulation | 350µV/mA (sourcing, –40°C to +85°C) - maintains reference integrity under dynamic sensor loading |
| Capacitive Load Stability | Stable with 0–5µF output capacitance - allows use of bulk decoupling without oscillation risk |
| Ripple Rejection | 86dB at 120Hz - suppresses AC line noise on shared supply rails |
Pinout & Package
The MAX6035ESA25+T is housed in an 8-pin SO (SOIC-N) package (package code S8-2), with pins 1, 3, 5, 7, and 8 designated No Connect (N.C.). Functional terminals are IN (pin 2), OUT (pin 6), and GND (pin 4).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 2 (IN) | Input Voltage Supply | Accepts 4.4V–33V unregulated input; supplies internal bandgap and error amplifier |
| Pin 4 (GND) | Analog Ground Reference | Primary return path for reference output and internal bias currents; must be low-impedance |
| Pin 6 (OUT) | Precision Reference Output | Delivers regulated 2.5V; capable of sourcing 10mA or sinking 2mA into load |
| Pins 1,3,5,7,8 | No Connection | Not internally bonded; must remain floating - no routing or soldering required |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Internally compensated architecture eliminates need for output bypass capacitor - saves PCB area in space-constrained designs |
| Ultra-low, supply-independent current | 95µA max quiescent current with <0.7µA/V variation - enables predictable battery drain regardless of input rail fluctuations |
| High supply voltage tolerance | Withstands up to 33V input - simplifies design in automotive, industrial, and 24V bus applications without pre-regulation |
| Robust capacitive-load drive | Stable with 0–5µF output capacitance - supports local decoupling for noise-sensitive ADCs or DACs without instability |
| Laser-trimmed thin-film resistors | Enables ±0.2% initial accuracy and 40ppm/°C tempco - reduces system calibration overhead in precision measurement |
Applications
| Industrial 4–20mA Transmitters | Portable Data-Acquisition Systems |
|---|---|
Use Scenario: Precision current-loop transmitter converting sensor signals (e.g., pressure, temperature) into standardized 4–20mA output. IC Role / Device Role / Timing Role: Provides stable 2.5V reference for DAC and current-sense amplifier, defining loop full-scale accuracy. Use Value: 40ppm/°C tempco and ±0.2% initial accuracy ensure ≤0.1% total loop error over –40°C to +85°C without recalibration. |
Use Scenario: Handheld multimeter or sensor logger acquiring analog inputs via 12-bit SAR ADC. IC Role / Device Role / Timing Role: Supplies excitation and reference voltage for ADC, enabling ratiometric measurements with minimal drift. Use Value: 95µA max supply current extends single-cell Li+ battery life beyond 12 months in sleep-active cycling. |
| Low-Power Test Equipment | Li+ Battery Chargers |
Use Scenario: Benchtop calibrator generating precise DC voltage/current outputs for instrument verification. IC Role / Device Role / Timing Role: Serves as master reference for programmable voltage source, ensuring traceable accuracy across temperature. Use Value: Thermal hysteresis of 135ppm and long-term stability of 110ppm/1000hr maintain calibration integrity between annual service cycles. |
Use Scenario: Single-cell Li+ charger IC monitoring battery voltage during CC/CV charge phases. IC Role / Device Role / Timing Role: Provides accurate 2.5V reference for ADC measuring cell voltage with <10mV resolution. Use Value: Stable output under varying input (4.4V–33V) and load (0–10mA) ensures precise termination at 4.20V ±5mV. |
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 | Same 2.5V output and ±0.2% accuracy, but rated for –40°C to +125°C and packaged in 3-pin SOT23; 25ppm/°C tempco vs. 40ppm/°C. | Preferred for extended-temperature automotive or industrial control where board space is constrained. | Select when wider temperature range or smaller footprint is required; not drop-in due to different package and pinout. |
| REF02CSZ-REEL7 | 2.5V shunt reference with ±0.3% accuracy, 50ppm/°C tempco, requires external ballast resistor; higher 1.5mA quiescent current. | Suitable for fixed-supply, non-battery applications where cost is prioritized over power efficiency. | Choose only if legacy REF02 compatibility is mandatory; expect higher power loss and reduced load flexibility. |
Compared with MAX6035AAUR25-T, the MAX6035ESA25+T trades extended temperature range and compact packaging for lower cost and SOIC ease-of-handling; versus REF02CSZ-REEL7, it delivers 14× lower quiescent current and eliminates external resistor dependency - critical for portable and high-accuracy systems.
Availability
MAX6035ESA25+T is available at Aetrix Electronics and suitable for industrial 4–20mA transmitters, portable data-acquisition systems, and low-power test equipment requiring stable component supply across extended production lifecycles.
Supply support for MAX6035ESA25+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 precision instrumentation, industrial automation, and communications markets.
The MAX6035 series was designed specifically for high-voltage, micropower precision reference applications - targeting battery-operated measurement systems and industrial control nodes where accuracy, stability, and supply efficiency are co-critical.
FAQ
What is the maximum operating temperature range for the MAX6035ESA25+T?
The MAX6035ESA25+T is specified for operation from –40°C to +85°C. This industrial-grade temperature range is validated per the device's Absolute Maximum Ratings and Electrical Characteristics tables, with all parameters guaranteed across this span. The MAX6035ESA25+T does not support the +125°C upper limit found in the AUR-series variants (e.g., MAX6035AAUR25-T).
Does the MAX6035ESA25+T require an external output capacitor?
No, the MAX6035ESA25+T is internally compensated and does not require an external output capacitor for stability. It remains stable with capacitive loads from 0 to 5µF, allowing designers to add optional bulk capacitance for transient suppression without risking oscillation - a key advantage over many competing references.
What is the supply voltage range supported by the MAX6035ESA25+T?
The MAX6035ESA25+T operates with a supply voltage range of 4.4V to 33V, as derived from its dropout voltage (2.25V max at 10mA load) and line regulation specifications. This wide range enables direct interface with unregulated 12V/24V industrial rails, automotive batteries, and multi-cell Li+ packs without pre-regulation.
How does the MAX6035ESA25+T compare to the REF02 in power consumption?
The MAX6035ESA25+T draws a maximum of 95µA quiescent current, which is 14× lower than the REF02's typical 1.35mA supply current. This dramatic reduction eliminates wasted bias current inherent in shunt references and directly extends battery life in portable instrumentation using the MAX6035ESA25+T.
Can the MAX6035ESA25+T sink current, and if so, how much?
Yes, the MAX6035ESA25+T can sink up to 2mA of load current while maintaining output regulation. This bidirectional capability supports active pull-down configurations, such as driving current into a grounded DAC reference input or interfacing with certain op-amp topologies requiring sink capability - unlike many unidirectional series references.
MAX6035ESA25+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- 40ppm/°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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6035ESA25+T FAQ
1.How can I place an order for MAX6035ESA25+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6035ESA25+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 MAX6035ESA25+T reliable?
The price and inventory of MAX6035ESA25+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6035ESA25+T is usually 5 days.
3.What payment methods are accepted for MAX6035ESA25+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6035ESA25+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6035ESA25+T?
MAX6035ESA25+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6035ESA25+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 MAX6035ESA25+T?
For technical support, including MAX6035ESA25+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6035ESA25+T requirements.
6.How does Aetrix verify that MAX6035ESA25+T is sourced from the original manufacturer or authorized distributors?
All MAX6035ESA25+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 MAX6035ESA25+T meets industry standards.
7.What is the process for return or replacement of MAX6035ESA25+T?
All MAX6035ESA25+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6035ESA25+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 MAX6035ESA25+T part is unused and in its original packaging.
Return procedure for MAX6035ESA25+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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