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Analog Devices Inc./Maxim Integrated MAX6103EUR
- Part No.:
- MAX6103EUR
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6103EUR.pdf
- Description:
- VOLTAGE REFERENCE
- Quantity:
- Payment:
- Shipping:
Inventory:3,137
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Product details
Overview
MAX6103EUR from Maxim Integrated is a low-dropout, micropower, three-terminal series-mode voltage reference delivering a precise 3.000V output with ±0.4% initial accuracy and 75ppm/°C max temperature coefficient over –40°C to +85°C. It draws only 90µA quiescent supply current, supports 5mA source / 2mA sink load current, and features 50mV dropout at 1mA - enabling use in battery-powered precision ADCs, portable instrumentation, and low-voltage sensor signal chains.
For engineers reviewing the MAX6103EUR datasheet, MAX6103EUR pinout, MAX6103EUR application, or MAX6103EUR equivalent, this device is selected for ultra-low power, high-accuracy voltage referencing where board space is constrained, external capacitors must be minimized, and stable operation across industrial temperature ranges is required.
Technical Context
The MAX6103EUR employs a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve its low temperature drift and high initial accuracy. Its series-mode architecture eliminates dependence on external biasing resistors and enables supply current virtually independent of input voltage (4–8µA/V variation).
Internally compensated and stable with any capacitive load when sourcing <200µA, it requires no external output capacitor for stability - unlike shunt-mode references - and maintains regulation under dynamic load steps up to 5mA source or 2mA sink without oscillation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000V ±0.4% (max) - ensures accurate full-scale reference for 12-bit ADCs without calibration. |
| Temp Coefficient | 75ppm/°C (max) - limits output drift to ±22.5mV over –40°C to +85°C ambient range. |
| Quiescent Current | 90µA (typ), 125µA (max) - enables >1-year battery life in coin-cell–powered devices. |
| Dropout Voltage | 50mV at 1mA load - allows operation from 3.05V input, supporting single Li-ion or dual alkaline systems. |
| Load Regulation | 0.9mV/mA (source), 4.0mV/mA (sink) - maintains tight output under varying sensor or DAC loading. |
| Ripple Rejection | 76dB at 120Hz - suppresses AC line noise in mixed-signal embedded systems. |
| Long-Term Stability | 50ppm/1000hr - ensures reference integrity in unattended field-deployed equipment. |
Pinout & Package
MAX6103EUR is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA), with 1.3mm × 2.9mm footprint and 1.0mm height - optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Voltage Supply | Accepts 3.2V to 12.6V input; internal LDO structure regulates output independently of VIN variation. |
| 2 (OUT) | Precision Reference Output | Delivers stable 3.000V; capable of sourcing 5mA or sinking 2mA while maintaining regulation. |
| 3 (GND) | Analog Ground Reference | Must be connected to clean system ground plane; separates reference return from noisy digital paths. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable with any capacitive load when sourcing <200µA - eliminates BOM cost and saves 1–2mm² board area. |
| Ultra-low quiescent current | 90µA typical - reduces self-heating error and extends shelf life in always-on IoT sensors. |
| Low dropout voltage | 50mV at 1mA - enables direct regulation from low-headroom sources like buck converter outputs. |
| High-output-current capability | 5mA source / 2mA sink - drives multiple op-amp inputs or SAR ADC references without buffering. |
| Laser-trimmed thin-film resistors | Enables ±0.4% initial accuracy and 75ppm/°C tempco - meets industrial-grade precision requirements. |
Applications
| Portable Data Acquisition | Industrial Sensor Transmitters |
|---|---|
Use Scenario: Handheld multimeter measuring DC voltage with 12-bit resolution and battery life target >500 hours. IC Role / Device Role / Timing Role: Primary voltage reference for the internal SAR ADC and analog front-end gain calibration. Use Value: 3.000V output matches common 3V rail; 90µA supply current minimizes battery drain; no output cap saves space in compact enclosure. |
Use Scenario: 4–20mA loop-powered temperature transmitter operating in –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Stable excitation reference for RTD bridge and precision ADC reference. Use Value: 75ppm/°C tempco ensures ≤±0.1% full-scale error over temperature; SOT23-3 fits tight PCB real estate near sensor interface. |
| Wearable Health Monitors | Smart Energy Meters |
Use Scenario: Optical heart-rate sensor module powered by CR2032 coin cell, requiring low-noise analog signal chain. IC Role / Device Role / Timing Role: Low-noise 3V reference for transimpedance amplifier and ADC biasing. Use Value: 40µVRMS (10Hz–10kHz) noise avoids degrading SNR; 50mV dropout allows operation down to 3.05V as battery discharges. |
Use Scenario: Polyphase electricity meter with isolated microcontroller and metrology ADC. IC Role / Device Role / Timing Role: Isolated-side precision reference for energy measurement ADC, powered via auxiliary winding. Use Value: 5mA drive capability supports multiple ADC channels; long-term stability (50ppm/1000hr) maintains billing accuracy over 10+ year lifetime. |
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 output, ±0.2% initial accuracy, 50ppm/°C tempco, 50µA IQ, SOT23-3 | Lower drift and higher accuracy, but lower output current (25mA max sink/source not specified; typical 10mA) | Select REF3030AIDBZR when tighter initial tolerance and lower tempco are critical, and load current ≤10mA. |
| ADR3430ARJZ-R7 | 3.0V output, ±0.1% initial accuracy, 10ppm/°C tempco, 120µA IQ, SOT23-3 | Superior stability and lower noise (12µVRMS), but higher quiescent current and narrower input range (3.0V–15V) | Select ADR3430ARJZ-R7 for metrology-grade applications where ultra-low drift outweighs battery-life impact. |
Compared with REF3030AIDBZR and ADR3430ARJZ-R7, the MAX6103EUR offers the best balance of ultra-low IQ (90µA), robust 5mA/2mA drive, and industrial tempco - making it optimal for cost-sensitive, battery-constrained systems needing reliable 3V referencing without external components.
Availability
MAX6103EUR is available at Aetrix Electronics and suitable for portable data acquisition, industrial sensor transmitters, and wearable health monitors requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6103EUR 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, medical, and communications applications.
The MAX6100–MAX6107 family was engineered specifically for micropower, low-dropout voltage referencing in space- and energy-constrained systems - prioritizing simplicity (no external caps), accuracy, and wide-temperature reliability.
FAQ
What is the maximum input voltage for MAX6103EUR?
The MAX6103EUR supports an input voltage range of (VOUT + 0.2V) to 12.6V, meaning its absolute maximum input is 12.6V. At 3.0V output, minimum valid input is 3.2V. Exceeding 13.5V at the IN pin risks permanent damage per absolute maximum ratings.
Does MAX6103EUR require an output capacitor for stability?
No, the MAX6103EUR is internally compensated and stable with any capacitive load when sourcing less than 200µA. For loads >200µA, avoid 0.5nF–50nF output capacitance to prevent instability. Most applications - including ADC references and op-amp biasing - operate reliably without any output capacitor.
What is the load current capability of MAX6103EUR?
The MAX6103EUR can source up to 5mA and sink up to 2mA while maintaining output regulation within specifications. This enables direct driving of multiple analog inputs, small logic interfaces, or low-power DAC references without external buffers.
How does MAX6103EUR compare to shunt voltage references in terms of supply efficiency?
Unlike shunt references that waste current through a series resistor, the MAX6103EUR's series-mode architecture draws only 90µA quiescent current - independent of input voltage (±4–8µA/V variation). This eliminates wasted bias current and maximizes battery life, especially in variable-input or low-power systems.
Is MAX6103EUR suitable for automotive applications?
The MAX6103EUR is specified for –40°C to +85°C operation and meets industrial temperature requirements, but it is not AEC-Q200 qualified. For non-safety-critical automotive subsystems (e.g., cabin infotainment sensors), it may be used with system-level validation; however, automotive-grade alternatives with qualification should be selected for safety-relevant functions.
MAX6103EUR 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):
- 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 FAQ
1.How can I place an order for MAX6103EUR through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6103EUR 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 reliable?
The price and inventory of MAX6103EUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6103EUR is usually 5 days.
3.What payment methods are accepted for MAX6103EUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6103EUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6103EUR?
MAX6103EUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6103EUR 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?
For technical support, including MAX6103EUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6103EUR requirements.
6.How does Aetrix verify that MAX6103EUR is sourced from the original manufacturer or authorized distributors?
All MAX6103EUR 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 meets industry standards.
7.What is the process for return or replacement of MAX6103EUR?
All MAX6103EUR units undergo pre-shipment inspection (PSI). If there is an issue with MAX6103EUR, 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 part is unused and in its original packaging.
Return procedure for MAX6103EUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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