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Analog Devices Inc./Maxim Integrated MAX6141EUR+T
- Part No.:
- MAX6141EUR+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6141EUR+T.pdf
- Description:
- IC VREF SERIES 1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,085
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Product details
Overview
MAX6141EUR+T from Maxim Integrated is a precision 4.096V low-dropout, micropower, three-terminal voltage reference in a 3-pin SOT23-3 package. It delivers ±1% initial accuracy, 15ppm/°C typical temperature coefficient (≤50ppm/°C max), and 200mV dropout at 1mA load - enabling stable operation in 3V/5V battery-powered systems with minimal headroom. Its 75µA supply current is virtually independent of input voltage, extending runtime in portable instrumentation.
For engineers reviewing the MAX6141EUR+T datasheet, MAX6141EUR+T pinout, MAX141EUR+T application, or MAX6141EUR+T equivalent, key selection criteria include output stability under capacitive loads up to 10nF, line/load regulation performance (≤50 µV/V and ≤1.6 mV/mA), thermal hysteresis (80ppm), and compatibility with low-noise data-acquisition signal chains requiring 4.096V full-scale reference alignment.
Technical Context
The MAX6141EUR+T employs a bandgap-based reference core with internal trimming for 4.096V nominal output, optimized for 3V–12.6V input operation. Its architecture ensures supply current remains stable across input voltage variations (ΔIQ/ΔVIN ≤ 6 µA/V) and temperature (−40°C to +85°C).
Unlike two-terminal references, it uses a three-terminal configuration (IN, OUT, GND) eliminating external bias resistors and reducing quiescent power loss. The device achieves 25µVP-P (0.1–10Hz) and 700µVP-P (10Hz–10kHz) output noise, supporting high-resolution ADC/DAC interfaces without additional filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±1% at +25°C; 4.015V to 4.180V over −40°C to +85°C - enables precise 12-bit DAC/ADC full-scale calibration. |
| Temperature Coefficient | 15ppm/°C typical, ≤50ppm/°C max - ensures ≤±2.05mV drift over industrial temperature range. |
| Dropout Voltage | 200mV at 1mA load - supports operation from 4.296V input in 4.3V systems with margin. |
| Supply Current | 78µA typical at +25°C; ≤130µA over full temperature range - minimizes battery drain in always-on sensing nodes. |
| Load Regulation | ≤1.6mV/mA sourcing, ≤16mV/mA sinking - maintains accuracy despite dynamic load transients in mixed-signal SoCs. |
| Output Noise | 25µVP-P (0.1–10Hz), 700µVP-P (10Hz–10kHz) - suitable for 16-bit SAR ADC reference without external filtering. |
| Line Regulation | ≤50µV/V from 4.3V to 12.6V - rejects supply ripple in noisy DC-DC converter outputs. |
Pinout & Package
MAX6141EUR+T is housed in a RoHS-compliant 3-pin SOT23-3 package (JEDEC MO-178AA), footprint-compatible with industry-standard 0.95mm pitch layouts. Thermal resistance θJA is 250°C/W; maximum continuous power dissipation is 320mW at +70°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input voltage supply | Accepts 4.3V to 12.6V; requires ≥200mV headroom above VOUT for regulation. |
| 2 (OUT) | Precision reference output | Delivers stable 4.096V; stable with 0–10nF capacitive loads; no output capacitor required. |
| 3 (GND) | Analog ground reference | Must be connected to clean system ground plane; separates reference return from digital switching currents. |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout voltage | 200mV at 1mA - enables use in 4.3V systems where headroom is constrained by LDO or battery sag. |
| Supply-current independence | ΔIQ/ΔVIN ≤ 6 µA/V - eliminates need for input voltage regulation before reference, simplifying power tree. |
| Capacitive-load stability | Stable with 0–10nF output capacitance - allows direct connection to ADC sample capacitors or DAC reference inputs. |
| Low output noise | 25µVP-P (0.1–10Hz) - supports high-precision weigh-scale and sensor front-end applications without post-filtering. |
| Thermal hysteresis | 80ppm - ensures repeatable output after thermal cycling, critical for field-deployed calibration equipment. |
Applications
| Portable Data Loggers | Industrial Process Transmitters |
|---|---|
|
Use Scenario: Battery-powered environmental sensor node logging temperature, humidity, and pressure at 1-second intervals for 5+ years on two AA cells. IC Role / Device Role / Timing Role: Provides 4.096V reference for 16-bit sigma-delta ADC measuring RTD and bridge sensors. Use Value: 78µA quiescent current and 200mV dropout extend battery life while maintaining 12-bit effective resolution across operating temperature. |
Use Scenario: 4–20mA loop-powered transmitter converting analog sensor signals to HART-enabled digital output in hazardous areas. IC Role / Device Role / Timing Role: Supplies precision reference for DAC generating loop current setpoint and internal ADC monitoring supply rail. Use Value: ≤50ppm/°C tempco and 80ppm thermal hysteresis ensure <±0.1%FS error over -40°C to +85°C ambient without recalibration. |
| Medical Patient Monitors | Test & Measurement Equipment |
|
Use Scenario: Portable ECG module digitizing biopotential signals with 100dB SNR requirement and 5-year shelf life. IC Role / Device Role / Timing Role: Reference source for 16-bit SAR ADC sampling lead-off detection and analog front-end gain stages. Use Value: 25µVP-P low-frequency noise prevents baseline wander artifacts; 10nF capacitive-load tolerance allows direct ADC capacitor coupling. |
Use Scenario: Benchtop multimeter performing 6½-digit DC voltage measurements with auto-ranging and self-calibration. IC Role / Device Role / Timing Role: Primary reference for internal 24-bit delta-sigma ADC and secondary reference for DAC-based offset correction. Use Value: ±1% initial accuracy and guaranteed ≤50ppm/°C drift enable traceable calibration against NIST standards without factory adjustment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF43GUE4 | 4.096V, 0.05% initial accuracy, 3ppm/°C max, SOIC-8 package, 1.2mA supply current | Higher precision and lower drift, but 16× higher quiescent current limits battery life | Select when ultra-low tempco (<3ppm/°C) and sub-0.1% accuracy outweigh power budget constraints |
| ADR3440ARJZ-R7 | 4.096V, 0.1% initial accuracy, 10ppm/°C max, SOT23-5 package, 120µA supply current | Slightly better tempco than MAX6141EUR+T but requires 5-pin layout and has higher IQ | Choose for improved drift performance in space-constrained designs where 5-pin routing is acceptable |
Compared with REF43GUE4 and ADR3440ARJZ-R7, MAX6141EUR+T offers the lowest quiescent current (78µA) in a 3-pin SOT23 footprint, making it optimal for ultra-low-power portable instrumentation where 1% initial accuracy and 50ppm/°C max drift are sufficient.
Availability
MAX6141EUR+T is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical devices, and industrial process transmitters requiring stable component supply with long-term lifecycle support.
Supply support for MAX6141EUR+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 industrial, medical, and communications applications.
The MAX61xx family was developed specifically for low-power, high-accuracy voltage referencing in space- and energy-constrained systems - emphasizing micropower operation, low dropout, and robustness across temperature and load conditions.
FAQ
What is the maximum input voltage rating for MAX6141EUR+T?
The MAX6141EUR+T supports an absolute maximum input voltage of +13.5V relative to GND. However, its specified operational range is 4.3V to 12.6V. Operating above 12.6V may cause parametric degradation or reliability risk, even if within absolute maximum ratings. Always maintain ≥200mV headroom between IN and OUT for regulation.
Does MAX6141EUR+T require an output capacitor for stability?
No, the MAX6141EUR+T is internally compensated and stable with output capacitive loads from 0nF to 10nF. Adding an output capacitor is unnecessary and may degrade transient response. If used for charge reservoir purposes (e.g., driving DAC reference inputs), total capacitance must not exceed 10nF to preserve settling time performance.
Can MAX6141EUR+T be used in a 3.3V system?
No - the MAX6141EUR+T requires a minimum input voltage of 4.3V to regulate its 4.096V output, due to its 200mV dropout specification. It is incompatible with 3.3V rails. For 3.3V systems, consider the MAX6125 (2.5V output) or MAX6145 (4.5V output with lower dropout margin), both available in the same SOT23-3 package.
What is the thermal hysteresis specification for MAX6141EUR+T?
The MAX6141EUR+T exhibits 80ppm thermal hysteresis, measured across multiple temperature cycles from −40°C to +85°C and back. This value represents the maximum residual output voltage shift after thermal cycling and is critical for applications requiring repeatable calibration without field recalibration, such as portable test equipment.
How does supply current vary with input voltage in MAX6141EUR+T?
The MAX6141EUR+T features supply-current independence: ΔIQ/ΔVIN is guaranteed ≤6 µA/V over 4.3V–12.6V. At +25°C, quiescent current remains tightly centered at 78µA regardless of input voltage - a key advantage over resistor-biased two-terminal references and essential for predictable battery-life estimation in portable designs.
MAX6141EUR+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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 1 mA
- Tolerance:
- ±1%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- 25µVp-p
- Noise - 10Hz to 10kHz:
- 700µVp-p
- Voltage - Input:
- 4.3V ~ 12.6V
- Current - Supply:
- 130µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6141EUR+T FAQ
1.How can I place an order for MAX6141EUR+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6141EUR+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 MAX6141EUR+T reliable?
The price and inventory of MAX6141EUR+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6141EUR+T is usually 5 days.
3.What payment methods are accepted for MAX6141EUR+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6141EUR+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6141EUR+T?
MAX6141EUR+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6141EUR+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 MAX6141EUR+T?
For technical support, including MAX6141EUR+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6141EUR+T requirements.
6.How does Aetrix verify that MAX6141EUR+T is sourced from the original manufacturer or authorized distributors?
All MAX6141EUR+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 MAX6141EUR+T meets industry standards.
7.What is the process for return or replacement of MAX6141EUR+T?
All MAX6141EUR+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6141EUR+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 MAX6141EUR+T part is unused and in its original packaging.
Return procedure for MAX6141EUR+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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