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Analog Devices Inc./Maxim Integrated MAX6103EUR+T
- Part No.:
- MAX6103EUR+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6103EUR+T.pdf
- Description:
- IC VREF SERIES 0.4% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:22,713
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Product details
Overview
MAX6103EUR+T from Maxim Integrated is a 3.0V, low-dropout (50mV at 1mA), micropower (90µA typical) series-mode voltage reference in a 3-pin SOT23 package, featuring ±0.4% initial accuracy, 75ppm/°C max temperature coefficient, and no external capacitor requirement-designed for precision analog sensing and ADC/DAC biasing in space-constrained portable systems.
For engineers reviewing the MAX6103EUR+T datasheet, MAX6103EUR+T pinout, MAX6103EUR+T application, or MAX6103EUR+T equivalent, this page delivers verified electrical parameters, thermal stability data, load/supply regulation behavior, and real-world design implications for battery-powered instrumentation, handheld test equipment, and embedded sensor interfaces.
Technical Context
The MAX6103EUR+T employs a proprietary curvature-correction circuit with laser-trimmed thin-film resistors to achieve low drift across –40°C to +85°C. Its series-mode architecture eliminates dependency on external bias resistors and enables supply current virtually independent of input voltage (4–8 µA/V variation).
Internally compensated for stability with capacitive loads up to 1µF, it delivers 5mA sourcing and 2mA sinking capability while maintaining 0.9mV/mA load regulation (source) and 4.0mV/mA (sink), enabling direct interface with op-amps, ADC references, and precision regulators without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000V ±0.4% (2.988V–3.012V at +25°C); sets accurate reference for 12-bit+ ADCs and DACs. |
| Temperature Coefficient | 75ppm/°C max (–40°C to +85°C); ensures ≤±2.4mV total drift over full range-critical for field-deployed sensors. |
| Dropout Voltage | 50mV at 1mA load; allows operation from 3.05V input-enables use with single-cell Li-ion or regulated 3.3V rails. |
| Quiescent Current | 90µA typical, 125µA max; supports >1-year battery life in always-on monitoring nodes drawing <10µA average system current. |
| Load Regulation | 0.9mV/mA (source), 4.0mV/mA (sink); maintains reference stability during dynamic load switching in mixed-signal SoCs. |
| Noise (0.1–10Hz) | 35µVP-P; low enough for 16-bit SAR ADC reference without additional filtering. |
| Ripple Rejection | 76dB at 120Hz; suppresses power-supply ripple from switchers or LDOs feeding the reference input. |
Pinout & Package
MAX6103EUR+T is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA), with 1.3mm × 2.9mm footprint and 1.0mm height-optimized for high-density PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Voltage Supply | Accepts 3.2V–12.6V input; requires no series resistor-simplifies power-tree design vs. shunt references. |
| 2 (OUT) | Reference Output | Provides stable 3.0V output; capable of sourcing 5mA or sinking 2mA directly into load or feedback network. |
| 3 (GND) | Analog Ground Reference | Must be connected to clean analog ground plane; separates reference return from digital or power ground paths. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable with 0–1µF capacitive loads-eliminates board area and BOM cost in size-sensitive designs like wearables. |
| Ultra-low quiescent current | 90µA typical, supply-voltage-independent-enables multi-year operation from coin cells in IoT endpoint sensors. |
| Low dropout voltage | 50mV at 1mA-allows use with undervoltage-protected 3.3V rails or aging batteries down to 3.05V. |
| High-output-current capability | 5mA source / 2mA sink-drives ADC reference inputs, op-amp bias networks, and small logic loads without buffers. |
| Laser-trimmed thin-film resistors | Enables ±0.4% initial accuracy and 75ppm/°C tempco-reduces calibration overhead in production test. |
Applications
| Portable Medical Sensors | Handheld DMMs |
|---|---|
Use Scenario: Battery-powered pulse oximeter with 16-bit ADC sampling analog photodiode signals. IC Role / Device Role / Timing Role: Provides stable 3.0V reference for ADC conversion and transimpedance amplifier biasing. Use Value: 75ppm/°C tempco and 35µVP-P noise ensure <0.01% measurement error across operating temperature and eliminate post-acquisition software correction. |
Use Scenario: 4½-digit digital multimeter powered by two AA cells with auto-ranging analog front-end. IC Role / Device Role / Timing Role: Supplies precision reference to dual-slope integrator and comparator circuits. Use Value: 50mV dropout enables operation down to 3.05V input-extending usable battery life by >25% versus higher-dropout alternatives. |
| Industrial Data Loggers | GPS Receivers |
Use Scenario: Remote environmental logger with thermistor, humidity, and pressure sensors feeding multiplexed 12-bit ADC. IC Role / Device Role / Timing Role: Single reference source for all sensor signal chains and internal MCU ADC. Use Value: ±0.4% initial accuracy reduces factory calibration steps; no external capacitor saves PCB area in sealed enclosures. |
Use Scenario: Portable GPS module requiring low-noise, stable reference for RF front-end LNA bias and baseband ADC. IC Role / Device Role / Timing Role: Supplies 3.0V reference to GPS SoC's analog subsystem and crystal oscillator buffer. Use Value: 76dB ripple rejection suppresses switching noise from PMU DC-DC converters-preventing spurious GPS lock failures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3030AIDBZR | 3.0V, 50ppm/°C max, 50µA quiescent current, SOT23-3-but requires 1µF output capacitor for stability. | Better tempco and lower IQ, but capacitor dependency increases board area and limits ultra-low-power wake-up timing. | Choose REF3030AIDBZR only if tempco <50ppm/°C is mandatory and board space permits capacitor placement. |
| ADR3430ARJZ-R7 | 3.0V, 10ppm/°C max, 120µA IQ, SOT23-5-with enable pin and tighter initial accuracy (±0.1%), but larger package and higher cost. | Superior precision for metrology-grade instruments, but over-spec'd and cost-prohibitive for consumer portable devices. | Select ADR3430ARJZ-R7 when absolute accuracy and long-term drift (<15ppm/1000hr) outweigh size and cost constraints. |
Compared with REF3030AIDBZR and ADR3430ARJZ-R7, MAX6103EUR+T offers optimal balance of low dropout (50mV), zero-capacitor operation, and SOT23-3 footprint-making it the preferred choice for cost-sensitive, space-constrained, battery-operated systems where ±0.4% accuracy and 75ppm/°C stability are sufficient.
Availability
MAX6103EUR+T is available at Aetrix Electronics and suitable for portable medical sensors, handheld DMMs, industrial data loggers, GPS receivers, and battery-powered instrumentation requiring stable component supply with consistent parametric performance across temperature and load conditions.
Supply support for MAX6103EUR+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 demanding industrial, automotive, and communications applications.
The MAX6100–MAX6107 family was engineered specifically for micropower, low-dropout voltage referencing in space- and energy-constrained portable electronics-prioritizing simplicity (no external caps), wide input range, and robust thermal performance over ultra-high precision.
FAQ
What is the maximum input voltage for MAX6103EUR+T?
The MAX6103EUR+T supports an input voltage range of (VOUT + 0.2V) to 12.6V, meaning its absolute maximum input is 12.6V. Operation above this risks permanent damage per Absolute Maximum Ratings. At 3.0V output, minimum valid input is 3.2V-ensuring reliable regulation even near dropout. This range accommodates both regulated 3.3V supplies and unregulated battery rails up to 12V.
Does MAX6103EUR+T require an output capacitor for stability?
No, MAX6103EUR+T does not require an output capacitor for stability. It is internally compensated and remains stable with any capacitive load from 0 to 1µF when sourcing <200µA. For loads >200µA, stability is maintained with CLOAD < 0.5nF or >50nF. Adding a 1µF capacitor improves transient response in step-load applications but is optional-enabling true capacitor-free designs in ultra-compact layouts.
What is the load current capability of MAX6103EUR+T?
MAX6103EUR+T can source up to 5mA and sink up to 2mA while maintaining specified accuracy and regulation. Load regulation is 0.9mV/mA (source) and 4.0mV/mA (sink), ensuring minimal output deviation under dynamic loading. This allows direct driving of ADC reference inputs, op-amp bias networks, and small logic loads-eliminating need for external buffers in most portable applications.
How does MAX6103EUR+T compare to shunt voltage references in terms of supply efficiency?
Unlike shunt references that waste supply current through a series resistor, MAX6103EUR+T draws only 90µA quiescent current-virtually independent of input voltage (4–8 µA/V variation). It supplies load current only when demanded, maximizing battery life. Shunt references must be biased for worst-case load even at idle, making MAX6103EUR+T up to 5× more efficient in intermittent-use portable systems.
What is the turn-on settling time for MAX6103EUR+T?
MAX6103EUR+T settles to within 0.1% of final output voltage in 115µs (typical) with COUT = 50pF. Turn-on time increases under worst-case conditions-up to 1.5ms at minimum dropout (3.05V input) and maximum 5mA load. This fast settling supports rapid wake-up modes in battery-powered microcontrollers without sacrificing reference accuracy during active measurement cycles.
MAX6103EUR+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):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.4%
- Temperature Coefficient:
- 75ppm/°C
- Noise - 0.1Hz to 10Hz:
- 35µVp-p
- Noise - 10Hz to 10kHz:
- 40µVrms
- Voltage - Input:
- 3.2V ~ 12.6V
- Current - Supply:
- 125µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6103EUR+T FAQ
1.How can I place an order for MAX6103EUR+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6103EUR+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 MAX6103EUR+T reliable?
The price and inventory of MAX6103EUR+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6103EUR+T is usually 5 days.
3.What payment methods are accepted for MAX6103EUR+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6103EUR+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6103EUR+T?
MAX6103EUR+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6103EUR+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 MAX6103EUR+T?
For technical support, including MAX6103EUR+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6103EUR+T requirements.
6.How does Aetrix verify that MAX6103EUR+T is sourced from the original manufacturer or authorized distributors?
All MAX6103EUR+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 MAX6103EUR+T meets industry standards.
7.What is the process for return or replacement of MAX6103EUR+T?
All MAX6103EUR+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6103EUR+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 MAX6103EUR+T part is unused and in its original packaging.
Return procedure for MAX6103EUR+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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