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Analog Devices Inc./Maxim Integrated MAX6101EUR
- Part No.:
- MAX6101EUR
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6101EUR.pdf
- Description:
- THREE TERMINAL VOLTAGE REFERENCE
- Quantity:
- Payment:
- Shipping:
Inventory:1,473
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Product details
Overview
The MAX6101EUR from Maxim Integrated is a 1.25V, 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 operates from 2.5V to 12.6V input over –40°C to +85°C. Designed for precision analog sensing and ADC/DAC biasing in space-constrained portable systems.
For engineers reviewing the MAX6101EUR datasheet, MAX6101EUR pinout, MAX6101EUR application, or MAX6101EUR equivalent, this device offers ultra-low 90µA quiescent current, no external capacitor requirement, stable operation with capacitive loads, and high-output-current capability (5mA source / 2mA sink) - critical for battery-powered instrumentation and embedded data acquisition.
Technical Context
The MAX6101EUR uses a proprietary curvature-correction circuit and laser-trimmed thin-film resistors to achieve low drift and high initial accuracy. Its series-mode architecture eliminates dependence on external bias resistors and enables supply current virtually independent of input voltage (4–8µA/V variation).
Internally compensated and stable without output capacitance, it supports load currents up to 5mA while maintaining 50mV dropout at 1mA. The device features 86dB ripple rejection at 120Hz and 15µVRMS noise (10Hz–10kHz), making it suitable for high-resolution 12- to 16-bit converter references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.25V ±0.4% (max initial error) - sets precise bias point for ADCs, DACs, and sensor signal chains |
| Temp Coefficient | 75ppm/°C (max) - ensures ≤±0.094mV drift over –40°C to +85°C ambient range |
| Quiescent Current | 90µA (typ), 125µA (max) - enables multi-year battery life in always-on monitoring systems |
| Dropout Voltage | 50mV at 1mA load - allows operation from 1.3V input when outputting 1.25V |
| Load Regulation | 0.9mV/mA (source), 8mV/mA (sink) - maintains stability across dynamic load steps in portable power rails |
| Noise (10Hz–10kHz) | 15µVRMS - contributes <0.0015% of full-scale error in 1V-range 16-bit systems |
| Ripple Rejection | 86dB at 120Hz - suppresses AC line artifacts in battery-charged or DC-DC-derived supplies |
Pinout & Package
MAX6101EUR is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA), with 1.3mm × 0.8mm footprint and 1.0mm height. Pin 1 = IN, Pin 2 = OUT, Pin 3 = GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Voltage Supply | Accepts 2.5V–12.6V; internal LDO regulation begins here - requires local 0.1µF ceramic bypass for optimal transient response |
| 2 (OUT) | Precision Reference Output | Delivers stable 1.25V; directly drives ADC reference inputs, op-amp bias networks, or DAC VREF pins without buffering |
| 3 (GND) | Analog Ground Reference | Must be connected to clean system ground plane; separates reference return from noisy digital or power grounds |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Eliminates 1–2 passive components and PCB area; simplifies layout for wearables and medical sensors |
| Stable with capacitive loads | Operates reliably with 0–1µF output capacitance - accommodates ESD protection caps or long trace parasitics |
| Ultra-low quiescent current | 90µA typical draw enables >10-year operation on CR2032 coin cells in low-duty-cycle IoT nodes |
| High output current capability | Sources 5mA / sinks 2mA - directly powers small op-amps or multiple precision comparators without external buffers |
| Low temperature coefficient | 75ppm/°C max ensures <±0.1mV drift across industrial temperature range - meets Class I metrology requirements |
Applications
| Portable Data Loggers | Handheld Test Equipment |
|---|---|
Use Scenario: Battery-powered environmental sensor node recording temperature, humidity, and pressure at 1Hz intervals. IC Role / Device Role / Timing Role: Provides stable 1.25V reference for 16-bit SAR ADC sampling analog sensor outputs. Use Value: Enables ±0.005% full-scale measurement accuracy over –20°C to +60°C operating range with no calibration drift compensation. | Use Scenario: Pocket-sized digital multimeter (DMM) measuring DC voltage, resistance, and continuity. IC Role / Device Role / Timing Role: Supplies reference voltage to dual-slope integrator and auto-ranging comparator circuits. Use Value: Delivers consistent 1.25V baseline despite varying battery voltage (3.0–4.2V), eliminating zero-shift errors during battery discharge. |
| Medical Wearables | Industrial Sensor Transmitters |
Use Scenario: ECG patch monitoring heart rate and waveform morphology continuously for 72 hours. IC Role / Device Role / Timing Role: Sets reference for low-noise instrumentation amplifier and anti-aliasing filter stages. Use Value: 15µVRMS noise and 86dB PSRR prevent mains-frequency interference from corrupting microvolt-level biopotential signals. | Use Scenario: 4–20mA loop-powered temperature transmitter in factory automation. IC Role / Device Role / Timing Role: Generates precision 1.25V for RTD bridge excitation and ADC reference in isolated analog front-end. Use Value: ±0.4% initial accuracy and 75ppm/°C TC enable <0.1°C absolute temperature accuracy without factory trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF191ESA | 1.25V output, 10ppm/°C TC, 35µA IQ, SO-8 package | Lower drift but larger footprint and higher cost; requires external decoupling cap | Choose REF191ESA only if <15ppm/°C drift is mandatory and board area permits SO-8 |
| ADR3412ARJZ-R7 | 1.2V output, 10ppm/°C TC, 120µA IQ, SOT23-5 package | Different output voltage (1.2V vs 1.25V); 2 extra pins for enable and trim; higher precision but less current drive | Select ADR3412ARJZ-R7 only when 1.2V reference is acceptable and enable control is needed |
Compared with REF191ESA and ADR3412ARJZ-R7, the MAX6101EUR provides optimal balance of ultra-small size, zero-capacitor operation, and 5mA sourcing capability - making it uniquely suited for compact, high-current, battery-critical designs where 1.25V is required.
Availability
MAX6101EUR is available at Aetrix Electronics and suitable for portable data loggers, handheld test equipment, medical wearables, industrial sensor transmitters, and battery-powered instrumentation requiring stable component supply and long-term parametric consistency.
Supply support for MAX6101EUR 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 space-constrained, battery-operated systems needing high-accuracy, low-power voltage references without external components - targeting portable instrumentation and sensor interface markets.
FAQ
What is the maximum input voltage rating for the MAX6101EUR?
The MAX6101EUR has an absolute maximum input voltage of +13.5V referenced to GND. However, its specified operating input voltage range is 2.5V to 12.6V. Operation above 12.6V may cause parametric degradation or reliability risk, even if below the absolute maximum rating. Always maintain VIN within 2.5V–12.6V for guaranteed performance per the MAX6101EUR datasheet specifications.
Does the MAX6101EUR require an external output capacitor for stability?
No, the MAX6101EUR does not require an external output capacitor for stability. It is internally compensated and remains stable with any capacitive load, including zero capacitance. An optional 1µF capacitor may be added to improve transient response under large load steps, but it is not necessary for basic operation - a key advantage for ultra-compact PCB layouts using the MAX6101EUR.
What is the dropout voltage specification for the MAX6101EUR at full load?
The MAX6101EUR exhibits a dropout voltage of 50mV at 1mA load current, defined as the minimum VIN–VOUT differential needed to maintain output regulation within 0.2% of nominal 1.25V. At 5mA source current, dropout increases to approximately 200mV. This low dropout enables reliable operation from single-cell Li-ion (3.0–4.2V) or two-cell alkaline (2.4–3.2V) supplies when using the MAX6101EUR as a precision reference.
Can the MAX6101EUR sink current, and how much?
Yes, the MAX6101EUR can sink up to 2mA of load current while maintaining output regulation. This capability allows it to actively pull down reference nodes - useful for driving comparator inputs, biasing current sources, or interfacing with devices that draw current from the reference rail. Sink load regulation is specified at 8mV/mA (max), ensuring predictable behavior under reverse-load conditions in the MAX6101EUR's operational envelope.
How does the MAX6101EUR compare to shunt-mode voltage references in terms of supply current efficiency?
Unlike shunt-mode references that waste supply current through a series resistor, the MAX6101EUR draws only 90µA quiescent current - nearly independent of input voltage (4–8µA/V variation). Shunt references must be biased for worst-case load, wasting current even at light loads. The MAX6101EUR delivers superior efficiency, especially in battery systems, because its supply current scales only with actual load demand - a fundamental advantage of its series-mode architecture.
MAX6101EUR 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):
- 1.25V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.4%
- Temperature Coefficient:
- 75ppm/°C
- Noise - 0.1Hz to 10Hz:
- 13µVp-p
- Noise - 10Hz to 10kHz:
- 15µVrms
- Voltage - Input:
- 2.5V ~ 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
MAX6101EUR FAQ
1.How can I place an order for MAX6101EUR through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6101EUR 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 MAX6101EUR reliable?
The price and inventory of MAX6101EUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6101EUR is usually 5 days.
3.What payment methods are accepted for MAX6101EUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6101EUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6101EUR?
MAX6101EUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6101EUR 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 MAX6101EUR?
For technical support, including MAX6101EUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6101EUR requirements.
6.How does Aetrix verify that MAX6101EUR is sourced from the original manufacturer or authorized distributors?
All MAX6101EUR 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 MAX6101EUR meets industry standards.
7.What is the process for return or replacement of MAX6101EUR?
All MAX6101EUR units undergo pre-shipment inspection (PSI). If there is an issue with MAX6101EUR, 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 MAX6101EUR part is unused and in its original packaging.
Return procedure for MAX6101EUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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