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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:4,392
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Product details
Overview
The 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 chains in battery-powered data-acquisition systems.
For engineers reviewing the MAX6141ESA+ datasheet, MAX6141ESA+ pinout, MAX141ESA+ application, or MAX6141ESA+ equivalent, this device is selected for stable 4.096V reference generation where supply current independence from input voltage (78µA typ), low noise (25µVP-P, 0.1–10Hz), and load regulation of 0.55mV/mA are critical to ADC/DAC performance.
Technical Context
The MAX6141ESA+ implements a bandgap-based reference core with internal trimming for 4.096V output, optimized for operation from 4.3V to 12.6V input. Its architecture ensures supply current remains stable across input voltage variation (∆IQ/∆VIN = 1.7µA/V typ), enabling consistent biasing in varying supply conditions.
It delivers specified performance over –40°C to +85°C, with guaranteed TCVOUT ≤ 50ppm/°C and thermal hysteresis ≤ 80ppm. The device is internally compensated and stable with capacitive loads up to 10nF, eliminating need for external output capacitance in most applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.041V at +25°C; supports 12-bit DAC full-scale alignment without scaling |
| Initial Accuracy | ±1% (±41mV); enables single-point calibration in portable instrumentation |
| Tempco | 15ppm/°C typ, ≤50ppm/°C max; contributes ≤0.205mV drift over 0–70°C range |
| Dropout Voltage | 200mV at 1mA load; allows operation from 4.3V supply while maintaining regulation |
| Supply Current | 78µA typ at +25°C; draws <130µA over full temp range-ideal for multi-year battery life |
| Output Noise | 25µVP-P (0.1–10Hz); minimizes quantization uncertainty in 16-bit+ SAR ADCs |
| Load Regulation | 0.55mV/mA sourcing; holds output within 0.55mV for 1mA sensor bias current variation |
Pinout & Package
MAX6141ESA+ uses an 8-pin SO (Small Outline) package with exposed pad (RoHS-compliant, lead-free). Pin 1 is marked by notch or dot; pins 2, 3, 5, 6, and 7 are no-connect (N.C.) and must remain unconnected in layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN | Input voltage terminal; accepts 4.3V to 12.6V; requires local 0.1µF ceramic bypass |
| 4 | OUT | Precision 4.096V reference output; drives ADC REF, DAC VREF, or op-amp gain-setting networks |
| 8 | GND | Analog ground return; must be connected to clean system AGND plane with low-inductance path |
| 2,3,5,6,7 | N.C. | No internal connection; floating or grounded-no electrical effect on performance |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout (200mV) | Enables reliable 4.096V reference generation from 3-cell alkaline or single Li-ion (4.2V) supplies |
| Supply current independence | 78µA ±52µA over 4.3–12.6V input; eliminates dynamic error in battery-voltage-scaled systems |
| Stable with 0–10nF load | Removes need for output capacitor-reduces BOM count and PCB area in space-constrained designs |
| Guaranteed 50ppm/°C max tempco | Ensures ≤0.35mV total drift over industrial temperature range (–40°C to +85°C) |
| Thermal hysteresis ≤80ppm | Prevents reference voltage memory effects after thermal cycling in field-deployed equipment |
Applications
| Portable Data Loggers | Industrial Sensor Transmitters |
|---|---|
Use Scenario: Battery-powered environmental monitors logging temperature, humidity, and pressure using 16-bit sigma-delta ADCs. IC Role / Device Role / Timing Role: Provides stable 4.096V reference for ADC full-scale range, directly matching common microcontroller ADC reference inputs. Use Value: Enables 16-bit effective resolution without software gain correction; 78µA quiescent current extends 10-year battery life. | Use Scenario: 4–20mA loop-powered transmitters converting RTD or thermocouple signals in process control cabinets. IC Role / Device Role / Timing Role: Supplies excitation and reference for precision ratiometric measurement circuits driving 24-bit ΣΔ ADCs. Use Value: 50ppm/°C max tempco ensures <±0.1% FS error over ambient temperature swings in uncontrolled environments. |
| Medical Point-of-Care Devices | Test & Measurement Front Ends |
Use Scenario: Handheld blood glucose meters and ECG analyzers requiring FDA-grade analog accuracy and low power. IC Role / Device Role / Timing Role: Serves as master reference for analog front-end PGA, filter, and ADC subsystems. Use Value: 25µVP-P (0.1–10Hz) noise prevents baseline wander in sub-mV biomedical signal acquisition. | Use Scenario: Benchtop multimeters and oscilloscope auxiliary ADC modules demanding metrology-grade stability. IC Role / Device Role / Timing Role: Delivers traceable 4.096V reference for self-calibration routines and high-resolution digitization paths. Use Value: Thermal hysteresis ≤80ppm ensures repeatable measurements after thermal soak cycles during calibration lab procedures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3440ARZ | 4.096V output, 10ppm/°C max tempco, 65µA IQ, but requires ≥4.5V input (higher dropout) | Better tempco, but incompatible with 4.3V minimum supply; not suitable for marginal 3.3V LDO-fed rails | Select ADR3440ARZ only if supply ≥4.5V and tempco <10ppm/°C is mandatory |
| REF5040AIDR | 4.096V output, 3ppm/°C max tempco, 1mA IQ, 1.2V dropout, SO-8 package | Higher precision and lower noise, but 13× higher supply current limits battery use | Choose REF5040AIDR for lab-grade instruments where power is unrestricted and ultra-low drift is required |
Compared with ADR3440ARZ and REF5040AIDR, the MAX6141ESA+ uniquely balances 4.096V accuracy, ultra-low 78µA supply current, and 200mV dropout-making it optimal for portable, battery-critical systems where 4.3V input headroom exists but µA-level IQ is non-negotiable.
Availability
MAX6141ESA+ is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor transmitters, and medical point-of-care devices requiring stable component supply with full traceability and long-term lifecycle support.
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) designs precision analog, mixed-signal, and power management ICs for demanding industrial, medical, and communications applications.
The MAX61xx family was developed specifically for high-accuracy, low-power voltage reference needs in battery-operated and space-constrained systems-emphasizing dropout efficiency, supply current stability, and robustness across temperature.
FAQ
What is the minimum input voltage required for proper regulation of the MAX6141ESA+?
The MAX6141ESA+ requires a minimum input voltage of 4.3V to maintain regulation at its nominal 4.096V output, due to its 200mV dropout specification. Operation below 4.3V risks loss of regulation and increased output error; design margin should include worst-case tolerance and temperature drift of the upstream supply.
Does the MAX6141ESA+ require an output capacitor for stability?
No, the MAX6141ESA+ is internally compensated and stable with capacitive loads from 0nF to 10nF. An output capacitor is not required and may degrade transient response. Only add one if needed for charge reservoir purposes-and ensure total load capacitance stays ≤10nF to preserve settling time performance.
How does the supply current of the MAX6141ESA+ vary with temperature?
The MAX6141ESA+ draws 78µA typical at +25°C and up to 130µA over the full –40°C to +85°C operating range. This monotonic increase is characterized and guaranteed; no additional derating is needed for thermal design when used within its specified ambient limits.
Can the MAX6141ESA+ be used in a 3.3V system?
No-the MAX6141ESA+ requires a minimum input voltage of 4.3V and cannot regulate from a 3.3V rail. For 3.3V systems, consider the MAX6125ESA+ (2.5V output, 2.7V min input) or other members of the MAX61xx family with lower output voltages and corresponding lower dropout thresholds.
What is the purpose of the N.C. pins (2, 3, 5, 6, 7) on the MAX6141ESA+ SO package?
The N.C. pins on the MAX6141ESA+ are not internally connected and serve no electrical function. They may be left floating or tied to GND for mechanical stability-neither choice affects electrical performance. Do not route signals or supply connections to these pins.
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:
- 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:
- 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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