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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:4,927
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Product details
Overview
The MAX6103EUR-T from Maxim Integrated is a 3.0V, low-dropout (LDO), micropower series-mode voltage reference in a 3-pin SOT23 package. It delivers ±0.4% initial accuracy, 75ppm/°C max temperature coefficient, and 50mV dropout at 1mA load-enabling precision analog sensing and ADC biasing in space-constrained, battery-powered systems.
For engineers reviewing the MAX6103EUR-T datasheet, MAX6103EUR-T pinout, MAX6103EUR-T application, or MAX6103EUR-T equivalent, key selection criteria include its supply-current independence (90µA typical, ±4µA/V variation), no-external-capacitor stability, 5mA sourcing capability, and guaranteed operation from –40°C to +85°C.
Technical Context
The MAX6103EUR-T employs a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve low drift and high initial accuracy. Its series-mode architecture eliminates the need for an external current-setting resistor and avoids supply-current waste typical of shunt references.
Internally compensated and stable with any capacitive load when sourcing <200µA, it supports direct connection to ADC reference inputs and precision op-amp bias networks without output capacitance-reducing BOM count and PCB area in portable instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000V ±0.4% (±12mV) - sets accurate reference for 12-bit+ SAR ADCs and precision DACs |
| Temp Coefficient | 75ppm/°C max - ensures ≤2.25mV drift over –40°C to +85°C ambient range |
| Dropout Voltage | 50mV at 1mA load - enables operation with VIN as low as 3.05V, critical for single-cell Li-ion systems |
| Quiescent Current | 90µA typical, ≤125µA max - extends battery life in always-on sensor nodes and wearables |
| Load Regulation | 0.9mV/mA (source), 4.0mV/mA (sink) - maintains stability under dynamic load switching in mixed-signal SoCs |
| Ripple Rejection | 76dB at 120Hz - suppresses power-supply noise from DC-DC converters feeding analog subsystems |
| Long-Term Stability | 50ppm/1000hr - ensures calibration integrity in field-deployed medical and test equipment |
Pinout & Package
MAX6103EUR-T is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA), with 1.3mm × 0.8mm footprint and 0.95mm height - optimized for ultra-dense portable PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Voltage Supply | Accepts 3.2V–12.6V input; supplies internal bandgap core and output stage |
| 2 (OUT) | Reference Output | Provides regulated 3.0V output; directly drives ADC REF+, op-amp VREF, or DAC bias networks |
| 3 (GND) | Analog Ground Reference | Return path for reference current; must be connected to clean analog ground plane |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable with 0–∞ load capacitance when sourcing <200µA - eliminates 1–10µF ceramic cap and saves >1mm² board area |
| Supply-current independence | Variation ≤8µA/V across 3.2V–12.6V input - enables consistent battery-life estimation across discharge curve |
| Low dropout at full load | 200mV max at 5mA source - supports regulation from 3.2V input into 5mA sensor bias circuits |
| High sink/source capability | Sources 5mA / sinks 2mA - drives multiple parallel ADC references or active filter bias points |
| Laser-trimmed thin-film resistors | Enables ±0.4% initial accuracy without post-package trimming - reduces test cost and improves yield |
Applications
| Portable Medical Sensors | Industrial Data Loggers |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) with integrated 16-bit sigma-delta ADC sampling biopotential signals. IC Role / Device Role / Timing Role: Provides stable 3.0V reference for ADC full-scale range and transimpedance amplifier bias. Use Value: 75ppm/°C tempco ensures <±3 LSB error over body-temperature range; 90µA quiescent current extends disposable patch life to >7 days on coin cell. | Use Scenario: Battery-powered environmental logger recording temperature, humidity, and CO₂ every 10 seconds. IC Role / Device Role / Timing Role: Supplies precision reference to multi-channel SAR ADC and low-power microcontroller's internal VREF. Use Value: No-output-capacitor operation eliminates ESR-related drift; 50mV dropout allows use with buck converter set to 3.1V, minimizing heat dissipation. |
| Handheld Test Equipment | Automotive Cabin Sensors |
Use Scenario: Portable digital multimeter (DMM) with autoranging 200mV–1000V input and 4½-digit resolution. IC Role / Device Role / Timing Role: Serves as primary reference for dual-slope integrator and auto-zero amplifier stages. Use Value: 50ppm/1000hr long-term stability maintains calibration validity between annual lab recalibrations; SOT23-3 fits tight front-panel PCB layout. | Use Scenario: Occupant detection system using capacitive sensing and thermistor-based cabin temperature monitoring. IC Role / Device Role / Timing Role: References analog front-end (AFE) for ratiometric sensor measurements and MCU ADC channel calibration. Use Value: Guaranteed –40°C to +85°C operation meets automotive AEC-Q200 ambient requirements; 0.9mV/mA load regulation prevents reading errors during HVAC fan startup transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3430ARJZ-R7 | 3.0V output, ±0.1% initial accuracy, 30ppm/°C tempco, 120µA IQ, SOT23-5 package | Higher accuracy and lower drift but requires 2x PCB area and external decoupling caps | Select for metrology-grade instruments where 0.1% accuracy justifies added cost and layout complexity |
| REF3030AIDBZR | 3.0V output, ±0.2% initial accuracy, 50ppm/°C tempco, 45µA IQ, SOT23-3 package | Lower quiescent current but only 25mA max output current and no sink capability | Prefer for ultra-low-power sensor nodes with light loads (<1mA), where sink capability is unnecessary |
Compared with ADR3430ARJZ-R7 and REF3030AIDBZR, the MAX6103EUR-T uniquely balances 3.0V precision, 5mA sourcing + 2mA sinking, and true no-capacitor operation in the smallest SOT23-3 footprint-making it optimal for cost-sensitive, space-constrained, and dynamically loaded portable systems.
Availability
MAX6103EUR-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial data loggers, handheld test equipment, and automotive cabin sensors requiring stable component supply across extended temperature ranges and long production lifecycles.
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, medical, and communications applications.
The MAX6100–MAX6107 family was engineered specifically for battery-powered, space-constrained systems needing high-accuracy voltage references without external components-targeting portable instrumentation, sensor interfaces, and energy-harvesting nodes.
FAQ
What is the minimum input voltage required for stable operation of the MAX6103EUR-T?
The MAX6103EUR-T requires a minimum input voltage of (VOUT + 200mV) = 3.2V for guaranteed regulation across temperature and load. At 1mA load, dropout is 50mV, so 3.05V input sustains regulation-but 3.2V is the specified minimum per datasheet to ensure performance over –40°C to +85°C and full 5mA sourcing capability. The MAX6103EUR-T will not regulate correctly below this threshold.
Does the MAX6103EUR-T require an output capacitor for stability?
No, the MAX6103EUR-T does not require an output capacitor for stability. It is internally compensated and remains stable with any capacitive load when sourcing less than 200µA. For loads >200µA, stability is maintained with CLOAD < 0.5nF or >50nF; intermediate values may cause oscillation. Many designs omit the capacitor entirely-saving board space and cost-while retaining performance in the MAX6103EUR-T.
What is the maximum load current the MAX6103EUR-T can source and sink?
The MAX6103EUR-T can source up to 5mA and sink up to 2mA while maintaining output voltage regulation within specifications. Load regulation is specified at 0.9mV/mA (source) and 4.0mV/mA (sink). Exceeding these limits risks output deviation beyond ±0.4% accuracy and increased thermal stress. The MAX6103EUR-T is not rated for continuous short-circuit output-maximum short-circuit current is 110mA (to GND) or 12mA (to IN).
How does the supply current of the MAX6103EUR-T vary with input voltage?
The MAX6103EUR-T exhibits near-constant quiescent supply current: 90µA typical, ≤125µA max, with variation limited to ±4µA/V across its 3.2V–12.6V input range. This supply-current independence-unlike shunt references-means battery drain remains predictable regardless of input voltage sag or boost converter ripple. During turn-on below minimum input, current may briefly peak to 400µA, but steady-state operation of the MAX6103EUR-T stays tightly regulated.
Is the MAX6103EUR-T suitable for automotive applications?
The MAX6103EUR-T is specified for –40°C to +85°C operation and meets key automotive sub-system requirements (e.g., cabin sensors, infotainment power rails), but it is not AEC-Q200 qualified. For production automotive ECUs requiring formal qualification, designers should verify system-level robustness and consider AEC-Q200 alternatives. However, the MAX6103EUR-T's proven reliability, low drift, and wide temperature range make it widely deployed in non-safety-critical automotive applications where qualification is not mandated-such as aftermarket diagnostics tools and cabin environment monitors.
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:
- Obsolete
- 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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