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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:3,162
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Product details
Overview
MAX6241AESA from Maxim Integrated is a precision 4.096V buried-zener voltage reference IC with ±0.02% initial accuracy, 3.0ppm/°C max temperature coefficient (–40°C to +85°C), and 2.4µVP-P (0.1Hz–10Hz) low-noise performance. It delivers ±15mA output current capability and supports external trimming and noise reduction, making it ideal for 16-bit ADC/DAC reference circuits in test equipment and industrial control systems.
For engineers reviewing the MAX6241AESA datasheet, MAX6241AESA pinout, MAX6241AESA application, or MAX6241AESA equivalent, key selection criteria include guaranteed load regulation (≤7ppm/mA sourcing), long-term stability (20ppm/1000h), RoHS-compliant 8-pin SO package, and compatibility with capacitive loads up to 100µF without instability.
Technical Context
The MAX6241AESA uses buried-zener core technology with on-chip temperature compensation to achieve laboratory-grade stability without heater power. Its output is internally buffered and designed for direct connection to high-resolution converter reference inputs.
It features dual-path regulation: line regulation is specified at ≤7ppm/V over 10V–36V input range, while load regulation remains ≤7ppm/mA for sourcing currents up to +15mA and ≤7ppm/mA for sinking down to –15mA - both guaranteed across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±1mV at +25°C - ensures 16-bit DAC/ADC full-scale alignment without calibration. |
| Tempco (max) | 3.0ppm/°C (–40°C to +85°C) - enables <±0.5mV drift over full industrial range. |
| Noise (0.1–10Hz) | 2.4µVP-P - minimizes quantization uncertainty in precision measurement front-ends. |
| Initial Accuracy | ±0.02% (±0.82mV) - eliminates need for post-installation trimming in most metrology applications. |
| Load Current Range | ±15mA - supports driving multiple SAR ADC references or op-amp buffers simultaneously. |
| Long-Term Stability | 20ppm/1000h - guarantees <±0.08mV drift per 1000 hours, critical for unattended ATE systems. |
| Supply Current | 2.9mA typical - enables low-power portable instrumentation designs with minimal thermal drift impact. |
Pinout & Package
MAX6241AESA is housed in an 8-pin SO (Small Outline) package, RoHS-compliant, with standard 1.27mm pitch and JEDEC MS-012AC outline. Pin 1 is marked by notch or dot; pins 1, 7, and 8 are internally connected and must remain unconnected in PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | I.C. (Internally Connected) | Unused; no external connection required - floating or grounded violates internal biasing. |
| 2 | IN | Positive supply input (8V–36V); requires local 0.1µF bypass to GND for ripple rejection. |
| 3 | NR | Noise reduction node - connect 1µF capacitor to GND to reduce wideband noise by >20dB. |
| 4 | GND | Analog ground reference; must be star-connected to minimize ground bounce in mixed-signal systems. |
| 5 | TRIM | External voltage trim input - accepts 0–VOUT to adjust output ±0.6% (±24mV) without affecting tempco. |
| 6 | OUT | Stable 4.096V reference output - capable of sourcing/sinking ±15mA with <10µV/mA load regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core | Delivers lowest 1/f noise (2.4µVP-P) among 4.096V references - essential for sub-LSB stability in 16-bit+ systems. |
| Capacitive-load stability | Operates stably with 0–100µF output capacitance - eliminates need for isolation resistors in noisy environments. |
| Trim-adjustable output | ±24mV adjustment range via TRIM pin - enables system-level calibration without trimming resistors or firmware changes. |
| Transient response | 8µs settling to ±0.01% after turn-on - supports fast-cycling data acquisition systems requiring rapid reference stabilization. |
| Supply ripple rejection | ≥85dB @ 1kHz (with NR cap) - suppresses switching regulator noise coupling into precision analog signal chains. |
Applications
| High-Resolution Data Acquisition | Digital Voltmeter (DVM) |
|---|---|
Use Scenario: 16-bit SAR ADC sampling sensor signals in automated test equipment with 100kSPS throughput. IC Role / Device Role / Timing Role: Primary voltage reference for ADC VREF input, providing stable 4.096V scaling with <±0.5mV total error budget. Use Value: Enables true 16-bit ENOB by limiting reference-induced noise and drift to <0.25 LSB across temperature and time. | Use Scenario: Portable handheld DVM measuring DC voltages from 100mV to 10V with 0.005% basic accuracy. IC Role / Device Role / Timing Role: Precision reference for dual-slope integrator and ADC subsystem, referenced to 4.096V for binary-aligned digitization. Use Value: Eliminates manual zero-calibration cycles due to 20ppm/1000h stability and ±0.02% factory-trimmed accuracy. |
| Industrial Process Controller | ATE Reference Subsystem |
Use Scenario: PLC analog I/O module converting 4–20mA loop signals to digital with isolated 16-bit resolution. IC Role / Device Role / Timing Role: Isolated reference source for sigma-delta ADC, powered from local DC-DC converter with 12V input. Use Value: Maintains <±0.01% gain error over –40°C to +85°C ambient, meeting IEC 61000-6-2 immunity requirements. | Use Scenario: Rack-mounted ATE system generating calibrated stimulus voltages for DUT parametric testing. IC Role / Device Role / Timing Role: Master reference for programmable voltage sources and digitizer front-ends, distributed via Kelvin connections. Use Value: Guarantees <±1.5ppm/h drift during 8-hour production test runs, enabling pass/fail decisions without mid-test recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR444BRZ | 4.096V, 3ppm/°C max, 1.8µVP-P noise, but requires ≥10V supply and has only 10mA output drive. | Lower noise but higher minimum supply voltage limits use in 8–10V systems; not suitable for low-voltage portable DVMs. | Select ADR444BRZ only when ultra-low noise dominates over supply flexibility and output current. |
| REF5040AIDR | 4.096V, 3ppm/°C max, 2.2µVP-P noise, 10mA output, but lacks NR pin and external trim capability. | No noise-reduction capacitor option limits wideband noise suppression; fixed output prevents system-level calibration. | Choose REF5040AIDR for cost-sensitive, fixed-reference designs where board space and BOM count are prioritized over field calibration. |
Compared with ADR444BRZ and REF5040AIDR, MAX6241AESA uniquely combines 4.096V precision, ±15mA drive, NR pin for configurable noise filtering, and TRIM pin for post-assembly calibration - making it the only option supporting full-field metrology-grade validation in compact industrial formats.
Availability
MAX6241AESA is available at Aetrix Electronics and suitable for high-resolution analog-to-digital converters, digital voltmeters, and industrial process controllers requiring stable component supply with guaranteed long-term availability.
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 and mixed-signal ICs for precision, power, and interface applications.
The MAX62xx family targets metrology-grade voltage references for 16-bit+ data conversion systems, emphasizing ultra-low drift, low noise, and robustness under varying load and supply conditions.
FAQ
What is the maximum operating temperature range for MAX6241AESA?
The MAX6241AESA is rated for operation from –40°C to +85°C, with all electrical specifications guaranteed across this full industrial temperature range. Its 3.0ppm/°C maximum temperature coefficient and 20ppm/1000h long-term stability are validated under these conditions, making MAX6241AESA suitable for deployment in harsh environments such as factory-floor PLC modules and outdoor test instrumentation.
Can MAX6241AESA drive a 10µF output capacitor without oscillation?
Yes, MAX6241AESA is explicitly characterized for stable operation with output capacitance from 0µF to 100µF across its full load and temperature range. This eliminates the need for series isolation resistors in applications like battery-powered DVMs where large bulk capacitance is used to suppress supply ripple - a design advantage confirmed in the device's Electrical Characteristics table and Typical Operating Characteristics (Figure 16).
How does the NR pin on MAX6241AESA reduce noise?
The NR (Noise Reduction) pin on MAX6241AESA accepts an external 1µF capacitor to ground, which shunts high-frequency noise from the internal zener core and improves PSRR by >20dB above 1kHz. As shown in Figure 2 and TOC17–TOC18, this configuration reduces integrated 0.1Hz–10Hz noise to 2.4µVP-P and suppresses switching regulator artifacts - a feature not present in alternatives like REF5040AIDR.
Is external trimming supported on MAX6241AESA, and what is its range?
Yes, MAX6241AESA supports external trimming via the TRIM pin: connecting a 10kΩ potentiometer between OUT and GND, with its wiper to TRIM, allows ±24mV (±0.6%) output adjustment. This adjustment is fully decoupled from temperature coefficient - meaning MAX6241AESA retains its 3.0ppm/°C spec even after field calibration, a key differentiator for metrology-grade instruments requiring traceable adjustments.
What is the short-circuit protection behavior of MAX6241AESA's output?
MAX6241AESA output is short-circuit protected: it can withstand continuous short to GND when input voltage is ≤12V, and up to 5 seconds when input is ≤40V. Short-to-IN is also continuously safe at VIN ≤12V. These ratings are defined in Absolute Maximum Ratings and verified per JEDEC JESD78, ensuring reliability in fault-prone industrial wiring environments where accidental shorts may occur during maintenance or probing.
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:
- Obsolete
- 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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