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Analog Devices Inc./Maxim Integrated MAX6241BESA+
- Part No.:
- MAX6241BESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6241BESA+.pdf
- Description:
- IC VREF SERIES 0.1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:231
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Product details
Overview
MAX6241BESA+ from Maxim Integrated is a precision 4.096V buried-zener voltage reference IC designed for high-resolution data-conversion systems, featuring ±0.02% initial accuracy, 7ppm/°C max temperature coefficient over –40°C to +85°C, 2.4µVP-P (0.1Hz–10Hz) output noise, ±15mA output drive capability, and stable operation with all capacitive loads up to 100µF - deployed in 16-bit ADC/DAC reference paths and metrology-grade instrumentation.
For engineers reviewing the MAX6241BESA+ datasheet, MAX6241BESA+ pinout, MAX6241BESA+ application, or MAX6241BESA+ equivalent, key selection criteria include guaranteed load regulation (≤7ppm/mA sourcing), low-noise performance under real-world bypassing conditions, trim-adjustable output (±40mV range), transient response <8µs to ±0.01%, and compatibility with industrial temperature-cycled PCB assemblies requiring long-term stability ≤20ppm/1000h.
Technical Context
The MAX6241BESA+ employs buried-zener core technology with on-chip temperature compensation to achieve laboratory-grade stability without heater power. Its output voltage is trimmed via external resistor divider at the TRIM pin, decoupled from temperature drift effects.
It delivers regulated 4.096V referenced to GND with input supply range 8V–36V, supports bidirectional current delivery (±15mA), and maintains low output impedance (<1Ω @ 1kHz) while rejecting supply ripple >80dB up to 10kHz when NR capacitor is applied - enabling direct use in precision current-source topologies and ratiometric sensor excitation circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.004V at +25°C - ensures 16-bit DAC/ADC full-scale alignment within 1 LSB at 16-bit resolution (65536 steps) |
| Tempco (Max) | 7ppm/°C over –40°C to +85°C - limits worst-case drift to ±288ppm (±1.18mV) across full industrial range |
| Noise (0.1–10Hz) | 2.4µVP-P - contributes <0.4 LSB RMS noise in 16-bit 4.096V system (LSB = 62.5µV) |
| Load Regulation | ≤7ppm/mA sourcing - holds output error <±0.029mV over 0–15mA load variation |
| Supply Current | 2.9mA typical - enables low-power precision reference in battery-backed or energy-constrained systems |
| Long-Term Stability | 20ppm/1000h - predicts <±0.082mV drift over first year of continuous operation |
| Turn-On Settling | 8µs to ±0.01% - supports fast-reference-enable sequencing in time-critical acquisition systems |
Pinout & Package
MAX6241BESA+ is housed in an 8-pin SO (Small Outline) package, RoHS-compliant, with 1.27mm pitch, JEDEC MS-012AC outline, and thermal pad not present. Pin 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 permitted - floating or tied to GND/IN causes undefined behavior |
| 2 | IN | Positive supply input (8V–36V); requires local 1µF ceramic bypass to GND for optimal ripple rejection |
| 3 | NR | Noise reduction node; connect 1µF capacitor to GND to reduce wideband noise by ~10dB above 10Hz |
| 4 | GND | Analog ground reference; must be star-connected to system AGND with minimal trace inductance |
| 5 | TRIM | External voltage divider tap point; adjusts output ±40mV (±0.98%) without degrading tempco or noise |
| 6 | OUT | Stable 4.096V reference output; drives capacitive loads 0–100µF and resistive loads down to 273Ω (15mA) |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core with curvature-compensated tempco | Enables 7ppm/°C max drift without oven control or high quiescent power - ideal for portable metrology |
| Guaranteed ±15mA bidirectional output drive | Eliminates need for external buffer in 12–16-bit DAC reference or precision current-source applications |
| Trim-adjustable output (±40mV range) | Allows system-level calibration to compensate for PCB trace resistance, ADC offset, or sensor nonlinearity |
| Stable with 0–100µF capacitive loads | Permits direct integration with large bulk capacitance for low-noise analog supplies without oscillation risk |
| 8µs turn-on settling to ±0.01% | Supports synchronized reference enable in multi-channel DAQ systems with sub-microsecond timing windows |
Applications
| High-Resolution Data Acquisition | Digital Voltmeter (DVM) |
|---|---|
|
Use Scenario: 16-bit SAR ADC sampling thermocouple or strain-gauge signals in industrial PLC modules. IC Role / Device Role / Timing Role: Primary voltage reference for ADC VREF input, defining full-scale range and LSB size. Use Value: 7ppm/°C tempco and 2.4µVP-P noise ensure measurement repeatability ≤±0.005% FS across ambient temperature swings and low-frequency EMI. |
Use Scenario: 6½-digit handheld DVM requiring absolute accuracy better than 10ppm over 24h. IC Role / Device Role / Timing Role: Master reference for auto-zeroed integrator and dual-slope conversion chain. Use Value: 20ppm/1000h long-term stability and ±0.02% initial accuracy eliminate daily recalibration, extending calibration intervals to ≥12 months. |
| Precision Current Source | ATE Reference Subsystem |
|
Use Scenario: Programmable 4–20mA transmitter with HART modulation, powered from 24V loop supply. IC Role / Device Role / Timing Role: Stable 4.096V reference for DAC-controlled current mirror and sense-resistor biasing. Use Value: ±15mA sink/source capability directly drives 250Ω sense resistor (1–5V drop), eliminating op-amp buffer and associated drift/noise. |
Use Scenario: Automated test equipment channel card generating calibrated stimulus for mixed-signal IC validation. IC Role / Device Role / Timing Role: Low-noise, low-drift reference for programmable gain amplifier (PGA) and comparator threshold setting. Use Value: 8µs turn-on settling and excellent line/load regulation support rapid test sequence switching with <1µV step error between voltage levels. |
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, 10mA max output, SO-8 | Lower noise and tempco but reduced drive strength; requires external buffer for >10mA loads | Select when ultra-low drift dominates over output current capability - e.g., calibration lab standards |
| REF5040AIDR | 4.096V, 3ppm/°C max, 4.5µVP-P, ±10mA, SO-8 | Higher noise, same tempco, lower output current; uses XFET topology instead of buried zener | Select when supply voltage headroom is limited (min VIN = 5.5V) and moderate noise is acceptable |
Compared with ADR444BRZ and REF5040AIDR, MAX6241BESA+ trades 4ppm/°C higher tempco and +0.6µVP-P noise for +5mA sourcing/sinking margin and proven robustness under capacitive loading - making it preferred for production-grade industrial DAQ where drive strength and layout flexibility outweigh marginal spec differences.
Availability
MAX6241BESA+ is available at Aetrix Electronics and suitable for high-resolution analog-to-digital converters, digital voltmeters, and precision current sources requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for MAX6241BESA+ 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, automotive, and communications markets - emphasizing precision, reliability, and integration density.
The MAX62xx family targets metrology-grade voltage references where buried-zener stability, low noise, and industrial temperature operation are mandatory - specifically engineered for 16-bit+ data converters and calibration-critical instrumentation.
FAQ
What is the maximum allowable input voltage for MAX6241BESA+?
The MAX6241BESA+ supports an input voltage range of 8V to 36V DC. Absolute maximum rating is +40V on the IN pin, but operation above 36V risks exceeding safe power dissipation limits and may degrade long-term stability. For reliable 24V industrial rail use, a 1µF X7R ceramic capacitor from IN to GND is recommended to suppress transients and improve ripple rejection.
Can MAX6241BESA+ drive a 10µF output capacitor without instability?
Yes - the MAX6241BESA+ is explicitly characterized and guaranteed stable with capacitive loads from 0µF to 100µF across its full operating temperature range and load current (±15mA). This eliminates need for isolation resistors or ferrite beads in most applications, simplifying layout and preserving transient response. Stability is maintained regardless of capacitor dielectric type (X7R, C0G, or tantalum).
How much can the output voltage of MAX6241BESA+ be adjusted using the TRIM pin?
The TRIM pin allows ±40mV adjustment of the 4.096V nominal output - corresponding to ±0.98% full-scale range. This is achieved using a 10kΩ potentiometer between OUT and GND, with wiper connected to TRIM. External trimming does not affect temperature coefficient, noise, or long-term stability, making it suitable for post-assembly calibration of system gain or offset errors.
Is MAX6241BESA+ compatible with lead-free reflow soldering processes?
Yes - the "+" suffix in MAX6241BESA+ denotes a lead(Pb)-free, RoHS-compliant 8-pin SO package rated for standard Pb-free reflow profiles. Peak reflow temperature is +260°C (per JEDEC J-STD-020), with 60–90 seconds above 217°C. The device passes MSL Level 1 rating and requires no pre-bake when stored per J-STD-033 guidelines.
What is the typical power consumption of MAX6241BESA+ at 25°C?
At +25°C and VIN = 10V, the MAX6241BESA+ draws 2.9mA typical supply current - equating to 29mW at 10V or 18mW at 6.2V. Quiescent current remains stable across input voltage (8–36V) and load current (±15mA), with only ±0.1mA variation over temperature (–40°C to +85°C), supporting accurate power budgeting in thermally constrained designs.
MAX6241BESA+ 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:
- ±0.1%
- Temperature Coefficient:
- 7ppm/°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
MAX6241BESA+ FAQ
1.How can I place an order for MAX6241BESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6241BESA+ 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 MAX6241BESA+ reliable?
The price and inventory of MAX6241BESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6241BESA+ is usually 5 days.
3.What payment methods are accepted for MAX6241BESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6241BESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6241BESA+?
MAX6241BESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6241BESA+ 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 MAX6241BESA+?
For technical support, including MAX6241BESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6241BESA+ requirements.
6.How does Aetrix verify that MAX6241BESA+ is sourced from the original manufacturer or authorized distributors?
All MAX6241BESA+ 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 MAX6241BESA+ meets industry standards.
7.What is the process for return or replacement of MAX6241BESA+?
All MAX6241BESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6241BESA+, 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 MAX6241BESA+ part is unused and in its original packaging.
Return procedure for MAX6241BESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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