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Analog Devices Inc./Maxim Integrated MAX6250BESA
- Part No.:
- MAX6250BESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6250BESA.pdf
- Description:
- IC VREF SERIES 0.1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,815
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Product details
Overview
MAX6250BESA from Maxim Integrated is a precision 5.000V buried-zener voltage reference IC with ±0.02% initial accuracy, 7.0ppm/°C max temperature coefficient over –40°C to +85°C, and 3.0µVP-P (0.1Hz–10Hz) output noise-designed for high-resolution ADC/DAC biasing in metrology-grade instrumentation and ATE systems.
For engineers reviewing the MAX6250BESA datasheet, MAX6250BESA pinout, MAX6250BESA application, or MAX6250BESA equivalent, key selection criteria include guaranteed ±15mA sourcing/sinking capability, 8-pin SO package compatibility, low 20ppm/1000h long-term stability, and optional external trim/noise reduction circuitry.
Technical Context
The MAX6250BESA employs buried-zener core technology with on-chip temperature compensation to achieve near-zero thermal curvature across its full operating range. Its output stage delivers low dynamic impedance (<1Ω at 1kHz) and stable performance into capacitive loads up to 100µF without oscillation.
It supports dual-path regulation: line regulation of ≤7ppm/V (10V–36V input), load regulation of ≤7ppm/mA (sourcing), and features dedicated NR and TRIM pins enabling wideband noise filtering and ±30mV output adjustment without degrading tempco or stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±5mV at +25°C - tight tolerance enables direct use in 16-bit SAR ADC reference rails without calibration. |
| Tempco (Max) | 7.0ppm/°C over –40°C to +85°C - ensures <±0.35mV drift across industrial temperature range. |
| Initial Accuracy | ±0.02% (±1mV) - eliminates need for post-installation trimming in high-accuracy digital voltmeters. |
| Output Noise | 3.0µVP-P (0.1Hz–10Hz) - critical for sub-LSB stability in precision weigh-scale and sensor signal chains. |
| Load Current | ±15mA sourcing/sinking - drives multiple op-amp reference inputs or DAC bias networks simultaneously. |
| Long-Term Stability | 20ppm/1000h - guarantees <±0.1mV drift per 1000 hours in unattended test equipment. |
| Supply Current | 3.3mA max - enables low-power portable calibration standards with battery operation. |
Pinout & Package
MAX6250BESA is housed in an 8-pin SO (Small Outline) package, RoHS-compliant, with 1.27mm pitch and standard JEDEC MS-012AC footprint. Pin 1 is marked by beveled corner or dot; pins 1, 7, and 8 are internally connected and must remain unconnected in PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 2) | Positive power supply input | Accepts 8V–36V DC; internal regulation rejects ripple up to 95dB @ 1kHz when NR capacitor is used. |
| NR (Pin 3) | Noise reduction terminal | Connects to 1µF capacitor to ground to reduce wideband noise by >20dB below 100kHz. |
| GND (Pin 4) | Analog ground reference | Must be star-connected to system AGND; separates reference return from digital or power return paths. |
| TRIM (Pin 5) | External voltage adjustment input | Accepts 10kΩ potentiometer between OUT and GND to enable ±30mV (±0.6%) fine-tuning without affecting tempco. |
| OUT (Pin 6) | Precision 5.000V reference output | Low-impedance buffered output; stable with 0–100µF capacitive loads; supports fast transient recovery (<10µs to ±0.01%). |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core architecture | Delivers lowest 1/f noise in class (3.0µVP-P) and eliminates warm-up drift typical of bandgap references. |
| Optional noise-reduction (NR) pin | Enables >20dB wideband noise suppression via 1µF capacitor-no additional filtering components needed for 16-bit resolution. |
| External trim capability | Supports ±30mV output adjustment using single 10kΩ pot; preserves 7.0ppm/°C tempco and 20ppm/1000h stability. |
| Stable under all capacitive loads | Operates reliably with 0–100µF output capacitance-eliminates need for isolation resistors in noisy industrial environments. |
| High sink/source drive strength | ±15mA continuous output current allows direct driving of multiple reference inputs or precision current sources. |
Applications
| High-Resolution Data Acquisition | Digital Multimeters & Calibrators |
|---|---|
Use Scenario: 16-bit sigma-delta ADC front-end in portable environmental sensor analyzers requiring <10ppm total error over temperature. IC Role / Device Role / Timing Role: Primary voltage reference for ADC VREF+ rail, providing stable 5.000V基准 with minimal code-width variation. Use Value: Enables ±0.0015% full-scale measurement accuracy without factory recalibration across –20°C to +70°C ambient. |
Use Scenario: Dual-rail reference subsystem in handheld DMMs supporting both 5V and –5V precision outputs. IC Role / Device Role / Timing Role: Positive 5.000V reference source feeding chopper-stabilized inverter to generate matched –5V rail. Use Value: Ensures <±10ppm gain matching between positive/negative rails, critical for true differential measurement fidelity. |
| Automated Test Equipment (ATE) | Precision Current Source Calibration |
Use Scenario: Channel reference in modular PXI-based ATE systems performing parametric testing of analog ICs at production volume. IC Role / Device Role / Timing Role: Stable excitation reference for programmable current sources and voltage stimulus generators. Use Value: Guarantees <±0.02% absolute accuracy over 8-hour test runs, reducing false-fail rate in high-speed production screening. |
Use Scenario: Reference element in metrology-grade 4–20mA loop calibrators traceable to NIST standards. IC Role / Device Role / Timing Role: Fixed 5.000V reference setting gain and offset of precision transconductance amplifier. Use Value: Achieves <±2µA output error over full 4–20mA range, meeting ANSI/ISA-50.00.01 Class A specification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR4550BRZ | 5.000V, 3ppm/°C max tempco, 1.75µVP-P noise, but only ±10mA output drive | Limited sourcing capability restricts use in multi-load reference distribution networks | Select when ultra-low noise dominates over drive strength; verify load current headroom. |
| REF5050AIDR | 5.000V, 3ppm/°C max tempco, 1.6µVP-P noise, 10mA max output, no TRIM/NR pins | Lacks external trim and noise-reduction flexibility; requires tighter input filtering | Choose for cost-sensitive designs where fixed-output, no-adjustment operation is acceptable. |
Compared with ADR4550BRZ and REF5050AIDR, MAX6250BESA trades slightly higher noise for significantly greater output drive (±15mA vs. ±10mA/10mA) and retains field-adjustability via TRIM/NR-making it optimal for reconfigurable test fixtures and multi-channel reference distribution.
Availability
MAX6250BESA is available at Aetrix Electronics and suitable for high-resolution analog-to-digital conversion, precision current source calibration, and automated test equipment requiring stable component supply with full industrial temperature support (–40°C to +85°C).
Supply support for MAX6250BESA 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 is a semiconductor company specializing in analog and mixed-signal ICs for precision, power, and interface applications, now part of Analog Devices.
The MAX62xx family was designed specifically for metrology-grade voltage reference needs in data acquisition, instrumentation, and calibration systems-prioritizing ultra-low drift, low noise, and robustness under real-world load and supply conditions.
FAQ
What is the maximum input voltage rating for MAX6250BESA?
The MAX6250BESA has an absolute maximum input voltage of +40V on the IN pin. However, its specified operating input range is 8V to 36V. Operation above 36V risks exceeding safe power dissipation limits and may degrade long-term stability-even if within absolute ratings-so design margins should maintain VIN ≤ 36V under all conditions including transients.
Can MAX6250BESA drive a 10µF output capacitor without instability?
Yes, MAX6250BESA is explicitly characterized and guaranteed stable with output capacitance from 0µF to 100µF across its full operating temperature and load range. This includes 10µF ceramic or tantalum capacitors commonly used for high-frequency decoupling in precision analog circuits-no series isolation resistor is required.
Does the TRIM pin on MAX6250BESA affect temperature coefficient performance?
No-the external trim circuitry on the MAX6250BESA does not alter the device's temperature coefficient. The datasheet confirms that trimming adjusts output voltage while preserving the specified 7.0ppm/°C max tempco over –40°C to +85°C, making it suitable for applications requiring both field calibration and thermal stability.
What is the short-circuit protection behavior of MAX6250BESA's output?
MAX6250BESA provides robust short-circuit protection: continuous short to GND is allowed when input voltage is ≤12V; for VIN ≤40V, short-to-GND duration is limited to 5 seconds. Short-to-IN is continuously safe at VIN ≤12V. These limits protect against latch-up and permanent damage during board-level fault conditions.
How does the NR (Noise Reduction) pin function on MAX6250BESA?
The NR pin on MAX6250BESA accepts a 1µF capacitor to ground to suppress wideband noise-reducing output noise by >20dB below 100kHz. Larger capacitors yield diminishing returns; the 1µF value is optimized per Maxim's characterization. Leaving NR open disables this feature, reverting to baseline 3.0µVP-P noise performance.
MAX6250BESA 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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 7ppm/°C
- Noise - 0.1Hz to 10Hz:
- 3µVp-p
- Noise - 10Hz to 10kHz:
- 2.5µVrms
- Voltage - Input:
- 8V ~ 36V
- Current - Supply:
- 3.3mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6250BESA FAQ
1.How can I place an order for MAX6250BESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6250BESA 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 MAX6250BESA reliable?
The price and inventory of MAX6250BESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6250BESA is usually 5 days.
3.What payment methods are accepted for MAX6250BESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6250BESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6250BESA?
MAX6250BESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6250BESA 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 MAX6250BESA?
For technical support, including MAX6250BESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6250BESA requirements.
6.How does Aetrix verify that MAX6250BESA is sourced from the original manufacturer or authorized distributors?
All MAX6250BESA 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 MAX6250BESA meets industry standards.
7.What is the process for return or replacement of MAX6250BESA?
All MAX6250BESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX6250BESA, 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 MAX6250BESA part is unused and in its original packaging.
Return procedure for MAX6250BESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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