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Analog Devices Inc./Maxim Integrated MAX6141ESA
- Part No.:
- MAX6141ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6141ESA.pdf
- Description:
- IC VREF SERIES 1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,322
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Product details
Overview
MAX6141ESA from Maxim Integrated is a precision 4.096V low-dropout, micropower, three-terminal voltage reference in an 8-pin SO package, featuring ±1% initial accuracy, 15ppm/°C typical temperature coefficient, and 200mV dropout voltage-designed for high-accuracy analog signal conditioning in battery-powered data-acquisition systems.
For engineers reviewing the MAX6141ESA datasheet, MAX6141ESA pinout, MAX6141ESA application, or MAX6141ESA equivalent, key selection considerations include thermal hysteresis (80ppm), supply current stability over input voltage (≤6µA/V variation), load regulation (0.55–1.6 mV/mA sourcing), noise performance (25µVP-P @ 0.1Hz–10Hz), and guaranteed operation across –40°C to +85°C.
Technical Context
The MAX6141ESA implements a bandgap-based reference core with internal trimming for 4.096V output, optimized for 3V/5V supply rails. Its 3-terminal architecture (IN, OUT, GND) eliminates external bias resistors required by two-terminal references, enabling predictable quiescent current (78–105µA at +25°C) independent of input voltage variation.
It delivers stable output under capacitive loads up to 10nF without requiring output capacitance, and maintains specified line regulation (2–50 µV/V) and load regulation over ±1mA sourcing/sinking-critical for ADC reference and sensor excitation circuits where supply headroom is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.041V (±1%) at +25°C; ±0.081V over –40°C to +85°C - enables direct interface with 12-bit SAR ADCs requiring 4.096V full-scale reference. |
| Tempco | 15ppm/°C typical, ≤50ppm/°C max - ensures ≤±0.0205V drift over industrial temperature range, supporting <12-bit accuracy without calibration. |
| Dropout Voltage | 200mV at 1mA load - allows operation from 4.3V supply in 5V systems with ≥0.2V margin, minimizing power loss in low-headroom designs. |
| Supply Current | 78–105µA at +25°C; ≤130µA over full temperature range - extends battery life in portable instrumentation with multi-year runtime requirements. |
| Thermal Hysteresis | 80ppm - corresponds to ≤±0.00033V shift after thermal cycling, critical for repeatable measurements in field-deployed test equipment. |
| Noise (0.1–10Hz) | 25µVP-P - contributes <0.0006% of full-scale error in 4.096V reference, preserving effective resolution in high-gain sensor front-ends. |
| Line Regulation | 2–50 µV/V - limits output change to ≤0.5mV over 4.3–12.6V input range, simplifying input filtering in unregulated supply environments. |
Pinout & Package
MAX6141ESA is housed in an 8-pin SO (Small Outline) package with standard JEDEC MO-153 footprint. Pin 1 is marked with a beveled corner or dot; pins are numbered counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN | Input voltage terminal; accepts 4.3V to 12.6V; must be decoupled with 0.1µF ceramic capacitor for optimal transient response. |
| 2 | N.C. | No connection; not internally bonded - must remain floating, not tied to GND or any other node. |
| 3 | N.C. | No connection; not internally bonded - electrically isolated; PCB pad may be omitted or left unconnected. |
| 4 | N.C. (ADJ) | No connection for MAX6141ESA; ADJ function is exclusive to MAX6160 - misconnection risks functional failure. |
| 5 | OUT | Precision 4.096V reference output; capable of sourcing/sinking ±1mA while maintaining regulation and noise specs. |
| 6 | N.C. | No connection; not internally bonded - no electrical function; avoid routing signals or traces beneath this pin. |
| 7 | N.C. | No connection; not internally bonded - serves only as mechanical support; no thermal or electrical role. |
| 8 | GND | Analog ground reference; must be connected to clean system ground plane with low-inductance path to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout (200mV) | Enables reliable operation from 4.3V supplies in 5V systems, reducing heat dissipation and extending battery life in portable devices. |
| Supply Current Stability | Quiescent current varies ≤6µA/V over input voltage range - eliminates need for input voltage regulation before the reference, simplifying BOM. |
| Capacitive Load Tolerance | Stable with 0–10nF output capacitance - permits use of local ceramic bypass without risk of oscillation, easing layout in space-constrained PCBs. |
| Thermal Hysteresis Control | 80ppm measured hysteresis over 6 temperature cycles - ensures repeatability in field instruments subjected to repeated thermal stress. |
| Industrial Temperature Range | Specified from –40°C to +85°C - supports deployment in automotive cabin electronics, industrial PLC I/O modules, and outdoor environmental sensors. |
Applications
| Portable Data Loggers | Medical Sensor Interfaces |
|---|---|
Use Scenario: Battery-powered environmental monitoring units logging temperature, humidity, and pressure over weeks using 12-bit ADCs. IC Role / Device Role / Timing Role: Provides stable 4.096V reference for successive-approximation ADC conversion, ensuring consistent full-scale definition across operating temperature and battery discharge. Use Value: 200mV dropout and 78µA supply current enable >3-year battery life on coin cells; 80ppm thermal hysteresis prevents measurement drift between field deployments. | Use Scenario: Handheld pulse oximeters requiring precise ratiometric measurement of red/IR photodiode currents. IC Role / Device Role / Timing Role: Supplies excitation reference for transimpedance amplifier gain-setting and ADC reference simultaneously, maintaining signal chain accuracy. Use Value: 15ppm/°C tempco and 25µVP-P low-frequency noise preserve SpO₂ calculation fidelity; 10nF capacitive load tolerance accommodates integrated EMI filters. |
| Industrial Process Transmitters | Calibration Equipment |
Use Scenario: 4–20mA loop-powered temperature transmitters installed in factory automation systems with ambient temperatures up to +75°C. IC Role / Device Role / Timing Role: Serves as primary voltage reference for DAC generating the loop current setpoint and for internal diagnostics ADC. Use Value: Guaranteed ≤50ppm/°C tempco and –40°C to +85°C operation ensure <0.1% FS error over full industrial range without software compensation. | Use Scenario: Benchtop multimeters and calibrators requiring traceable, stable DC voltage outputs for field instrument verification. IC Role / Device Role / Timing Role: Functions as the core reference element in precision voltage divider networks, directly defining output accuracy. Use Value: ±1% initial accuracy and 80ppm thermal hysteresis support Class II calibration standards; SO package enables automated optical inspection in high-reliability assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF43GM | 4.096V output, 10ppm/°C max tempco, 3.3V min input, SO-8 package - tighter tempco but higher minimum supply voltage. | Better suited for high-precision lab equipment where supply rail ≥3.3V is guaranteed; less tolerant of brown-out conditions than MAX6141ESA. | Select REF43GM when tempco <10ppm/°C is mandatory and input voltage remains ≥3.3V; choose MAX6141ESA for wider input range (4.3–12.6V) and lower dropout. |
| ADR3440 | 4.096V output, 15ppm/°C max tempco, 2.5V min input, SOT-23-3 package - smaller footprint but limited to 10mA max load and no SO-8 option. | Ideal for space-constrained portable designs with light load (<1mA); lacks SO-8 thermal mass and pinout compatibility for legacy board upgrades. | Choose ADR3440 for new compact designs prioritizing size; retain MAX6141ESA for drop-in replacement in existing SO-8 layouts or applications needing >1mA sourcing capability. |
Compared with REF43GM and ADR3440, the MAX6141ESA offers the widest input voltage range (4.3–12.6V) and lowest dropout (200mV), making it uniquely suitable for 5V systems with marginal supply headroom-while matching ADR3440's tempco spec and exceeding REF43GM's load drive capability.
Availability
MAX6141ESA is available at Aetrix Electronics and suitable for portable instrumentation, industrial process transmitters, medical sensor interfaces, and calibration equipment requiring stable component supply across extended product lifecycles.
Supply support for MAX6141ESA 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX61xx family was designed specifically for low-power, high-accuracy voltage reference applications in battery-operated and space-constrained systems-emphasizing micropower operation, low dropout, and robust thermal performance without external components.
FAQ
What is the maximum input voltage rating for MAX6141ESA?
The MAX6141ESA has an absolute maximum input voltage of +13.5V, but its specified operating range is 4.3V to 12.6V. Operation above 12.6V may cause parametric degradation or reliability risk, even if within absolute maximum ratings. For long-term reliability in production designs, maintain VIN ≤12.6V per the Electrical Characteristics table.
Does MAX6141ESA require an output capacitor for stability?
No, the MAX6141ESA is internally compensated and stable with output capacitance ranging from 0nF to 10nF. An output capacitor is not required and may degrade transient response. If used for charge reservoir purposes (e.g., buffering a DAC input), total capacitive load must not exceed 10nF to maintain specified settling time and noise performance.
Can MAX6141ESA be used in place of MAX6141EUR-T on the same PCB?
No-MAX6141ESA (8-pin SO) and MAX6141EUR-T (3-pin SOT23-3) have incompatible footprints, pin counts, and pin functions. The SO package includes multiple N.C. pins not present in SOT23, and the pinout mapping differs entirely. Board redesign is required for substitution; they are functionally identical but not mechanically interchangeable.
What does the "THERMAL HYSTERESIS" specification mean for MAX6141ESA?
The 80ppm thermal hysteresis value for MAX6141ESA quantifies the maximum reversible output voltage shift observed after six complete temperature cycles (–40°C → +85°C → –40°C). It reflects mechanical stress relaxation in the die and package, not long-term drift. This value ensures repeatable accuracy in field-redeployed equipment subjected to ambient thermal cycling.
Is MAX6141ESA compatible with lead-free reflow soldering processes?
Yes, MAX6141ESA is RoHS-compliant and qualified for standard lead-free reflow profiles, including peak temperatures up to +260°C for 10 seconds. The SO package construction meets JEDEC J-STD-020 moisture sensitivity level (MSL) 1, permitting unlimited floor life at ≤30°C/60% RH without dry-pack requirements.
MAX6141ESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- 8-SOIC
MAX6141ESA FAQ
1.How can I place an order for MAX6141ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6141ESA 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 MAX6141ESA reliable?
The price and inventory of MAX6141ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6141ESA is usually 5 days.
3.What payment methods are accepted for MAX6141ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6141ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6141ESA?
MAX6141ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6141ESA 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 MAX6141ESA?
For technical support, including MAX6141ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6141ESA requirements.
6.How does Aetrix verify that MAX6141ESA is sourced from the original manufacturer or authorized distributors?
All MAX6141ESA 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 MAX6141ESA meets industry standards.
7.What is the process for return or replacement of MAX6141ESA?
All MAX6141ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX6141ESA, 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 MAX6141ESA part is unused and in its original packaging.
Return procedure for MAX6141ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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