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Analog Devices Inc./Maxim Integrated MAX6241AESA+
- Part No.:
- MAX6241AESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6241AESA+.pdf
- Description:
- IC VREF SERIES 0.02% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:711
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Product details
Overview
MAX6241AESA+ from Maxim Integrated is a precision 4.096V buried-zener voltage reference IC with 3.0ppm/°C max temperature coefficient, ±0.02% initial accuracy, and 2.4µVP-P (0.1Hz–10Hz) output noise-designed for high-resolution ADC/DAC biasing in industrial process control and ATE systems.
For engineers reviewing the MAX6241AESA+ datasheet, MAX6241AESA+ pinout, MAX6241AESA+ application, or MAX6241AESA+ equivalent, key selection criteria include low-drift stability over –40°C to +85°C, ±15mA sink/source capability, optional external trim and noise reduction, and compatibility with capacitive loads up to 100µF without oscillation.
Technical Context
The MAX6241AESA+ employs buried-zener core technology with on-chip temperature compensation to achieve laboratory-grade stability without heater power. Its output remains stable across input voltages from 8V to 36V and load currents from –15mA to +15mA.
It supports external trimming via the TRIM pin (±24mV adjustment range) and wideband noise reduction via the NR pin (1µF capacitor reduces 0.1Hz–10Hz noise). Output impedance stays below 1Ω up to 10kHz, enabling clean settling in fast data-conversion cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±1mV at +25°C - ensures direct interface with 12-bit and 16-bit SAR/ΣΔ ADCs using standard 4.096V full-scale reference. |
| Temp Coefficient | Max 3.0ppm/°C (–40°C to +85°C) - guarantees ≤±0.5mV drift over full industrial temperature range. |
| Initial Accuracy | ±0.02% (±0.82mV) - eliminates need for system-level calibration in high-accuracy digital voltmeters and sensor front-ends. |
| Output Noise | 2.4µVP-P (0.1Hz–10Hz), 2.0–4.0µVRMS (10Hz–1kHz) - preserves SNR in 16-bit+ data acquisition systems. |
| Load Regulation | ≤7ppm/mA sourcing/sinking - maintains reference integrity under dynamic load switching in programmable current sources. |
| Supply Current | 1.9–3.2mA - enables low-power operation in battery-backed instrumentation and portable test equipment. |
| Long-Term Stability | 20ppm/1000h - supports multi-year calibration intervals in metrology-grade reference standards. |
Pinout & Package
MAX6241AESA+ uses an 8-pin SO (Small Outline) package with industry-standard footprint (S8+5, outline 21-0041), RoHS-compliant, rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | I.C. (Internally Connected) | No connection required; pins are internally bonded but not functional - must remain unconnected on PCB. |
| 2 | IN | Positive supply input (8V–36V); requires local bypass capacitor to suppress supply ripple coupling into reference output. |
| 3 | NR | Noise reduction node; accepts 1µF capacitor to ground to reduce wideband output noise by >10dB below 10Hz. |
| 4 | GND | Analog ground reference; must be tied to low-impedance system ground plane to minimize thermal EMF and noise pickup. |
| 5 | TRIM | External voltage adjust input; accepts 0–VOUT potential to trim output ±24mV (±0.59%) without degrading tempco. |
| 6 | OUT | Precision 4.096V reference output; capable of sourcing/sinking ±15mA while maintaining <10ppm line/load regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core | Enables ultra-low 1/f noise and <3ppm/°C drift without heater power or ovenization. |
| Stable for all capacitive loads | Operates reliably with 0–100µF output capacitance - simplifies layout in noisy industrial environments. |
| Optional noise reduction | NR pin accepts 1µF capacitor to cut 0.1Hz–10Hz noise by 30–40%, critical for DC precision measurements. |
| External trim capability | TRIM pin allows ±24mV fine adjustment post-assembly - accommodates board-level tolerance stackup. |
| Excellent transient response | Settles to ±0.01% in 8µs after load step; supports high-speed multiplexed data acquisition. |
Applications
| High-Resolution Data Acquisition | Digital Voltmeters |
|---|---|
Use Scenario: Simultaneous sampling of multiple sensor channels in industrial PLC analog input modules. IC Role / Device Role / Timing Role: Provides stable 4.096V reference for 16-bit sigma-delta ADCs driving isolated CAN/RS-485 communication. Use Value: Enables ±0.005% measurement repeatability over –40°C to +70°C ambient without recalibration. | Use Scenario: Benchtop 6½-digit DVM requiring traceable voltage standard with minimal self-heating error. IC Role / Device Role / Timing Role: Serves as primary reference for dual-slope integrator and auto-zero amplifier stages. Use Value: Delivers 20ppm/1000h long-term stability and <2.5µVP-P noise - meets ANSI C12.20 Class 0.1 accuracy requirements. |
| ATE Equipment | Precision Current Sources |
Use Scenario: Parametric testing of mixed-signal ICs in automated test handlers with thermal soak chambers. IC Role / Device Role / Timing Role: Supplies reference voltage to DAC-controlled current sinks sourcing 100nA–100mA with <0.01% linearity. Use Value: Maintains <±0.02% accuracy across 8V–36V supply variation and –40°C to +85°C chamber ramp - eliminates test correlation errors. | Use Scenario: Programmable 4–20mA transmitter for pressure transducers in hazardous-area field instruments. IC Role / Device Role / Timing Role: Sets precise compliance voltage for op-amp-based Howland current pump with remote sensing. Use Value: Supports ±15mA output drive and <7ppm/mA load regulation - ensures 0.1% loop accuracy over 4–20mA span and cable drop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5040IDR | 4.096V, 3ppm/°C max, 1.6µVP-P noise, 10mA max output, SO-8 package | Lower noise but reduced output drive; no TRIM/NR pins; requires external buffer for >10mA loads | Preferred when ultra-low noise dominates over drive strength and adjustability. |
| ADR444BRZ | 4.096V, 3ppm/°C max, 2.75µVP-P noise, ±10mA output, SO-8 package | Higher noise floor; no NR pin; trimmed at factory only; tighter initial accuracy (±0.012%) | Selected for metrology-grade fixed references where external trim is unnecessary. |
Compared with REF5040IDR and ADR444BRZ, the MAX6241AESA+ uniquely combines ±15mA drive, user-adjustable trim, dedicated noise-reduction pin, and guaranteed stability with 100µF capacitive loads - making it optimal for ruggedized, field-deployable instrumentation requiring both precision and flexibility.
Availability
MAX6241AESA+ is available at Aetrix Electronics and suitable for high-resolution analog-to-digital converters, digital voltmeters, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6241AESA+ 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 high-performance analog, mixed-signal, and power-management ICs for industrial, medical, and communications applications.
The MAX62xx family delivers laboratory-grade voltage references using buried-zener architecture - engineered specifically for metrology, precision data conversion, and calibration-critical systems demanding sub-ppm/°C stability and ultra-low noise.
FAQ
What is the maximum operating temperature range for the MAX6241AESA+?
The MAX6241AESA+ is rated for operation from –40°C to +85°C, as confirmed by its "E" grade designation and the "AESA+" suffix in the ordering table. This industrial temperature range is validated across all electrical specifications including tempco, line/load regulation, and noise performance - ensuring reliable behavior in factory-floor and outdoor instrumentation environments where thermal cycling occurs.
Does the MAX6241AESA+ require an external capacitor on the NR pin?
No, the NR pin on the MAX6241AESA+ is optional: leaving it open provides standard noise performance (2.4µVP-P), while connecting a 1µF capacitor to ground reduces low-frequency noise by ~30–40%. Larger values yield diminishing returns per the datasheet's Typical Operating Characteristics. The capacitor must be low-ESR ceramic and placed close to the pin to maintain effectiveness.
Can the MAX6241AESA+ drive a 10kΩ load directly without buffering?
Yes - the MAX6241AESA+ can directly drive a 10kΩ load (409.6µA at 4.096V) with negligible error: its load regulation is specified at ≤7ppm/mA, translating to <0.003mV shift. Even at full ±15mA output, voltage deviation remains within ±0.1mV. No buffer is needed for typical 12–16-bit ADC reference inputs, which draw <10µA.
What is the purpose of the TRIM pin on the MAX6241AESA+?
The TRIM pin on the MAX6241AESA+ allows ±24mV (±0.59%) output voltage adjustment using a simple 10kΩ potentiometer between OUT and GND, with the wiper connected to TRIM. This feature enables board-level calibration to compensate for PCB trace resistance, solder joint variance, or downstream DAC/ADC offset - without affecting temperature coefficient or long-term stability.
Is the MAX6241AESA+ compatible with 3.3V logic systems?
The MAX6241AESA+ is not a 3.3V-input device: its IN pin requires 8V–36V, so it cannot be powered directly from a 3.3V rail. However, its 4.096V output is fully compatible with 3.3V-system ADCs (e.g., those with 4.096V VREF input range) and interfaces seamlessly with 3.3V microcontrollers via its TRIM and NR control nodes, which operate at 0–4.096V levels - no level-shifting required.
MAX6241AESA+ 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, Buried Zener
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.02%
- Temperature Coefficient:
- 3ppm/°C
- Noise - 0.1Hz to 10Hz:
- 2.4µVp-p
- Noise - 10Hz to 10kHz:
- 2µVrms
- Voltage - Input:
- 8V ~ 36V
- Current - Supply:
- 3.2mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6241AESA+ FAQ
1.How can I place an order for MAX6241AESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6241AESA+ 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 MAX6241AESA+ reliable?
The price and inventory of MAX6241AESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6241AESA+ is usually 5 days.
3.What payment methods are accepted for MAX6241AESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6241AESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6241AESA+?
MAX6241AESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6241AESA+ 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 MAX6241AESA+?
For technical support, including MAX6241AESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6241AESA+ requirements.
6.How does Aetrix verify that MAX6241AESA+ is sourced from the original manufacturer or authorized distributors?
All MAX6241AESA+ 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 MAX6241AESA+ meets industry standards.
7.What is the process for return or replacement of MAX6241AESA+?
All MAX6241AESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6241AESA+, 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 MAX6241AESA+ part is unused and in its original packaging.
Return procedure for MAX6241AESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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