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Analog Devices Inc./Maxim Integrated MAX6250AEPA
- Part No.:
- MAX6250AEPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX6250AEPA.pdf
- Description:
- IC VREF SERIES 0.02% 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,435
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Product details
Overview
MAX6250AEPA from Maxim Integrated is a precision 5.000V buried-zener voltage reference with ±0.02% initial accuracy, 1.5ppm/°C max temperature coefficient (–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.
For engineers reviewing the MAX6250AEPA datasheet, MAX6250AEPA pinout, MAX6250AEPA application, or MAX6250AEPA equivalent, key selection criteria include its 15mA sink/source capability, stability under all capacitive loads up to 100µF, low 3.0mA supply current, and compatibility with external trimming and noise-reduction capacitors.
Technical Context
The MAX6250AEPA uses buried-zener core technology with on-chip temperature compensation to achieve laboratory-grade stability without heater power. Its trim input supports ±30mV adjustment (±0.6%) without degrading temperature performance.
It delivers 5.000V output with guaranteed line regulation ≤7ppm/V (10V–36V), load regulation ≤7ppm/mA (sourcing), and long-term drift of only 20ppm/1000h-enabling calibration-critical roles in digital voltmeters and ATE systems where reference drift directly impacts measurement validity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±1mV at +25°C - ensures direct compatibility with 5V-rail data converters without level-shifting. |
| Temp Coefficient | ≤3.0ppm/°C (–40°C to +85°C) - enables sub-0.01% full-scale error over industrial temperature range. |
| Initial Accuracy | ±0.02% (±1mV) - eliminates need for system-level calibration in high-accuracy 16-bit DAQ designs. |
| Output Noise | 3.0µVP-P (0.1Hz–10Hz) - preserves effective resolution in low-frequency precision measurements. |
| Load Current | ±15mA sourcing/sinking - drives heavy capacitive loads and multiple op-amp bias networks simultaneously. |
| Supply Current | 3.0mA max - enables low-power portable metrology instruments with battery-backed reference operation. |
| Long-Term Stability | 20ppm/1000h - guarantees <0.05% drift over 1 year, critical for unattended test equipment calibration intervals. |
Pinout & Package
MAX6250AEPA is housed in an 8-pin plastic DIP package (0.300" wide), RoHS-compliant, with through-hole mounting and industry-standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | I.C. | Internally connected; no external connection required-must remain unconnected per datasheet. |
| 2 | IN | Positive supply input (8V–36V); powers internal zener and regulation circuitry. |
| 3 | NR | Noise reduction node; accepts optional 1µF capacitor to reduce wideband output noise. |
| 4 | GND | Analog ground reference; must be low-impedance and star-connected to minimize noise coupling. |
| 5 | TRIM | External voltage adjust input; enables ±30mV (±0.6%) output tuning via 10kΩ potentiometer. |
| 6 | OUT | Stable 5.000V reference output; capable of driving 0–100µF capacitive loads without oscillation. |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core | Delivers lowest 1/f noise (3.0µVP-P) among 5V references-essential for sub-18-bit resolution systems. |
| Trim-adjustable output | ±30mV range (±0.6%) with zero impact on tempco-supports factory calibration without custom part numbers. |
| Capacitive-load immunity | Stable with 0–100µF output capacitance-eliminates need for isolation resistors in noisy mixed-signal PCBs. |
| High PSRR | ≥80dB ripple rejection at 1kHz (with NR cap)-rejects switching regulator noise in compact power supplies. |
| Transient response | 10µs settling to ±0.01% after load step-maintains reference integrity during fast DAC updates or multiplexer switching. |
Applications
| Digital Voltmeter (DVM) | 16-Bit Data Acquisition System |
|---|---|
|
Use Scenario: Portable handheld DVM measuring DC voltages from 100mV to 1000V with 0.005% basic accuracy. IC Role / Device Role / Timing Role: Primary 5V reference for dual-slope integrator and ADC front-end, defining full-scale range and gain stability. Use Value: 3.0ppm/°C tempco and 20ppm/1000h drift ensure calibration remains valid for 12 months between lab recalibrations. |
Use Scenario: Industrial PLC analog input module acquiring 16-channel thermocouple and RTD signals at 100ksps. IC Role / Device Role / Timing Role: Master reference for simultaneous-sampling SAR ADCs and programmable-gain instrumentation amplifiers. Use Value: ±15mA drive strength powers multiple PGA bias networks and decoupling caps without droop or instability. |
| Automated Test Equipment (ATE) | Precision Current Source |
|
Use Scenario: Semiconductor parametric tester requiring <10ppm measurement repeatability across 24-hour production runs. IC Role / Device Role / Timing Role: Reference for Kelvin-sense voltage sources and feedback loops in SMU (Source-Measure Unit) channels. Use Value: 3.0µVP-P low-frequency noise prevents false fails in ultra-low-current leakage tests (<1nA). |
Use Scenario: Calibrated 4–20mA transmitter with HART modulation, requiring stable 5V rail for DAC and isolator ICs. IC Role / Device Role / Timing Role: Precision voltage source for current-setting resistor network and loop-powered sensor excitation. Use Value: External TRIM pin allows field calibration to compensate for PCB trace resistance and connector contact resistance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5050IDR | 5.0V, 3ppm/°C max, 1.6µVP-P, SO-8, 3.5mA IQ | Lower noise but higher quiescent current; requires external buffer for >10mA loads | Preferred when ultra-low noise dominates over power or drive strength requirements |
| ADR4550BRZ | 5.0V, 3ppm/°C max, 2.75µVP-P, SO-8, 1.2mA IQ, 10mA max IOUT | Lower power but limited output current; no TRIM or NR pins | Selected for battery-powered portable calibrators where drive capability is secondary |
Compared with REF5050IDR and ADR4550BRZ, MAX6250AEPA uniquely combines 15mA bidirectional drive, TRIM/NR flexibility, and DIP package for prototyping-making it optimal for benchtop instrumentation and ATE where configurability and robustness outweigh minimal noise advantages.
Availability
MAX6250AEPA is available at Aetrix Electronics and suitable for digital voltmeters, 16-bit data acquisition systems, and automated test equipment requiring stable component supply with guaranteed long-term calibration integrity.
Supply support for MAX6250AEPA 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-engineered for laboratory, industrial, and ATE systems demanding sub-ppm stability, ultra-low noise, and field-calibration capability.
FAQ
What is the maximum input voltage rating for MAX6250AEPA?
The MAX6250AEPA has an absolute maximum input voltage of +40V on the IN pin, but its specified operating 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. For reliable 25-year service life in calibrated instruments, maintain VIN ≤ 36V per the Electrical Characteristics table.
Can MAX6250AEPA drive a 10µF ceramic output capacitor without instability?
Yes, MAX6250AEPA is explicitly characterized and guaranteed stable with output capacitance from 0µF to 100µF-including 10µF X7R ceramics-across full temperature and load ranges. This eliminates need for series isolation resistors in high-speed DAQ systems where low-ESR caps are used to suppress transient-induced glitches on the reference rail.
Does the TRIM pin on MAX6250AEPA affect temperature coefficient performance?
No-the external trim circuitry in MAX6250AEPA is designed so that adjusting the output voltage via the TRIM pin does not alter the temperature coefficient. The datasheet confirms trim adjustment preserves the rated 3.0ppm/°C max tempco, enabling post-assembly calibration without compromising thermal stability in field-deployed equipment.
What is the typical turn-on settling time for MAX6250AEPA?
The MAX6250AEPA achieves ±0.01% of final output voltage in 10µs after power-up, as measured under standard conditions (VIN = 10V, no load, TA = +25°C). This fast settling supports high-throughput ATE applications where reference stabilization time directly limits test cycle duration-especially in multi-channel parallel testing configurations.
Is MAX6250AEPA compatible with lead-free reflow soldering processes?
Yes, MAX6250AEPA carries the "+" suffix indicating RoHS-compliant, lead-free packaging. It is qualified for standard Pb-free reflow profiles with peak temperature up to +260°C (per JEDEC J-STD-020), matching 8-pin plastic DIP thermal mass requirements. No special prebake or cooling ramp is needed beyond standard moisture sensitivity level (MSL) handling.
MAX6250AEPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- ±0.02%
- Temperature Coefficient:
- 3ppm/°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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX6250AEPA FAQ
1.How can I place an order for MAX6250AEPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6250AEPA 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 MAX6250AEPA reliable?
The price and inventory of MAX6250AEPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6250AEPA is usually 5 days.
3.What payment methods are accepted for MAX6250AEPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6250AEPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6250AEPA?
MAX6250AEPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6250AEPA 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 MAX6250AEPA?
For technical support, including MAX6250AEPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6250AEPA requirements.
6.How does Aetrix verify that MAX6250AEPA is sourced from the original manufacturer or authorized distributors?
All MAX6250AEPA 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 MAX6250AEPA meets industry standards.
7.What is the process for return or replacement of MAX6250AEPA?
All MAX6250AEPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX6250AEPA, 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 MAX6250AEPA part is unused and in its original packaging.
Return procedure for MAX6250AEPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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