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Analog Devices Inc./Maxim Integrated MAX6250BCPA
- Part No.:
- MAX6250BCPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX6250BCPA.pdf
- Description:
- IC VREF SERIES 0.1% 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,256
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Product details
Overview
MAX6250BCPA from Maxim Integrated is a precision 5.000V buried-zener voltage reference IC with ±0.02% initial accuracy, 5.0ppm/°C max temperature coefficient (Grade B), and 3.0µVP-P (0.1Hz–10Hz) output noise. It delivers ±15mA sourcing/sinking capability, supports 8V–36V input, and is optimized for high-resolution ADC/DAC biasing in metrology-grade instrumentation.
For engineers reviewing the MAX6250BCPA datasheet, MAX6250BCPA pinout, MAX6250BCPA application, or MAX6250BCPA equivalent, key selection criteria include guaranteed load regulation (≤9ppm/mA), long-term stability (20ppm/1000h), optional external trim (±50mV), noise-reduction capacitor interface, and compatibility with capacitive loads up to 100µF without instability.
Technical Context
The MAX6250BCPA employs buried-zener core technology with on-chip temperature compensation to achieve near-zero thermal curvature across –40°C to +85°C. Its low-noise architecture includes dedicated NR pin for wideband noise filtering via external capacitor and TRIM pin for post-assembly calibration without degrading tempco performance.
It operates as a two-terminal shunt-like series reference: IN supplies regulated current to the zener, OUT delivers stable 5.000V referenced to GND, while GND serves as common return. Load regulation is symmetrically specified for both sourcing and sinking currents up to ±15mA, enabling bidirectional reference buffering in precision analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000V ±0.005V at +25°C - ensures 16-bit DAC/ADC full-scale accuracy without software calibration |
| Tempco (Max) | 5.0ppm/°C - limits drift to ≤±0.4mV over –40°C to +85°C operating range |
| Initial Accuracy | ±0.02% - guarantees absolute output tolerance of ±1.0mV at power-up |
| Output Noise | 3.0µVP-P (0.1Hz–10Hz) - preserves SNR in 24-bit delta-sigma converters |
| Load Regulation | ≤9ppm/mA sourcing, ≤15ppm/mA sinking - maintains stability under dynamic load transients |
| Supply Current | 2.0–3.3mA - enables low-power operation in battery-backed precision systems |
| Long-Term Stability | 20ppm/1000h - supports calibration intervals ≥1 year in field-deployed test equipment |
Pinout & Package
MAX6250BCPA uses an 8-pin plastic DIP package (0°C to +70°C temperature range) with industry-standard footprint and lead spacing. 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 supply input | Accepts 8V–36V unregulated DC; internal current source powers zener core |
| NR (Pin 3) | Noise reduction node | Connects to 1µF capacitor to reduce wideband noise; open-circuit if unused |
| GND (Pin 4) | Analog ground reference | Common return for output, trim, and noise-reduction paths; requires low-impedance connection |
| TRIM (Pin 5) | External voltage adjustment | Accepts potentiometer wiper to enable ±50mV (±1%) fine-tuning without affecting tempco |
| OUT (Pin 6) | Precision reference output | Delivers 5.000V ±0.005V; stable into 0–100µF capacitive loads and ±15mA current |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core | Enables 3.0µVP-P ultra-low noise and 20ppm/1000h aging vs. surface-zener alternatives |
| Optional NR capacitor | 1µF on NR pin reduces 10Hz–1kHz noise by >15dB without requiring layout changes |
| ±15mA bidirectional drive | Eliminates need for external buffer op-amps in 12–16-bit data acquisition channels |
| Stable with all capacitive loads | Supports direct connection to ADC reference inputs with 10µF bypass caps for EMI suppression |
| External trim interface | TRIM pin allows field calibration to compensate for PCB trace resistance and solder-joint offsets |
Applications
| Digital Voltmeters | High-Resolution ADC Systems |
|---|---|
Use Scenario: Portable 6½-digit DVM requiring <10ppm absolute accuracy over 1-year calibration cycle. IC Role / Device Role / Timing Role: Primary 5.000V reference for dual-slope integrator and auto-zero amplifier stages. Use Value: 5.0ppm/°C tempco and 20ppm/1000h stability eliminate recalibration drift between annual service intervals. | Use Scenario: 16-bit SAR ADC in industrial process controller measuring 4–20mA loop signals. IC Role / Device Role / Timing Role: Reference source for ADC VREF input; supplies bias to signal-conditioning PGA. Use Value: ±15mA drive capability directly powers PGA bias network, reducing component count and board space. |
| Precision Current Sources | ATE Equipment |
Use Scenario: Programmable 4-quadrant current source for semiconductor parametric testing. IC Role / Device Role / Timing Role: Setpoint reference for feedback-controlled MOSFET gate driver in Kelvin-connected load circuit. Use Value: Low 3.0µVP-P noise prevents current ripple from corrupting sub-nA measurement resolution. | Use Scenario: Modular ATE slot card requiring multiple synchronized 5V references for mixed-signal DUT testing. IC Role / Device Role / Timing Role: Local reference per channel to avoid ground-loop errors in high-density backplane architecture. Use Value: Industry-standard DIP-8 footprint enables drop-in replacement across legacy and new test head designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR445BRZ | 5.000V output, 3ppm/°C max tempco, higher 1.75mA supply current, SOIC-8 only | Lacks TRIM and NR pins; no external adjustment or noise filtering capability | Select when lowest tempco is critical and board space favors SOIC; accept loss of field calibration flexibility |
| REF5050AIDR | 5.000V output, 3ppm/°C max tempco, 1.1mA supply current, requires external 10µF output cap for stability | No NR pin; TRIM function absent; limited to 10mA max output current | Choose for ultra-low power systems where 10mA drive suffices and layout allows mandatory output capacitance |
Compared with ADR445BRZ and REF5050AIDR, the MAX6250BCPA uniquely combines 5.0ppm/°C tempco grade B performance with full external trim, noise reduction, and ±15mA drive in a through-hole DIP package-making it optimal for repairable, field-calibratable, and high-transient industrial instruments.
Availability
MAX6250BCPA is available at Aetrix Electronics and suitable for digital voltmeters, high-resolution ADC systems, precision current sources, ATE equipment, and metrology-grade instrumentation requiring stable component supply across extended production lifecycles.
Supply support for MAX6250BCPA 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 laboratory-grade voltage references where ultra-low noise, sub-10ppm/°C tempco, and long-term stability outweigh cost or size constraints-specifically for metrology, calibration, and high-end data conversion.
FAQ
What is the maximum input voltage rating for MAX6250BCPA?
The MAX6250BCPA has an absolute maximum input voltage rating of +40V on the IN pin. However, its specified operating input voltage range is 8V to 36V. Operation above 36V risks exceeding safe power dissipation limits and may degrade long-term reliability-even if within absolute maximum ratings-so design should maintain VIN ≤ 36V under all conditions including line transients.
Can MAX6250BCPA drive a 10µF capacitor directly at its output?
Yes, the MAX6250BCPA is explicitly characterized and guaranteed stable with capacitive loads from 0µF to 100µF across its full operating temperature and load-current range. This includes 10µF ceramic or tantalum output bypass capacitors commonly used for EMI suppression and transient response improvement in precision ADC reference circuits.
What does the 'B' in MAX6250BCPA indicate?
The 'B' in MAX6250BCPA denotes the temperature coefficient grade: 5.0ppm/°C maximum over the 0°C to +70°C operating range. This distinguishes it from the 'A' grade (2.0ppm/°C max) and reflects tighter tempco screening during manufacturing-critical for applications where thermal drift must be minimized without oven-controlled environments.
Is external trimming supported on MAX6250BCPA, and what is its range?
Yes, MAX6250BCPA supports external trimming via the TRIM pin. With a 10kΩ potentiometer connected between OUT and GND, the TRIM pin allows ±50mV (±1%) adjustment of the 5.000V output-enabling system-level calibration to compensate for PCB trace resistance, solder joint offsets, and sensor chain gain errors without impacting temperature coefficient performance.
How does the NR pin function on MAX6250BCPA?
The NR (Noise Reduction) pin on MAX6250BCPA accepts an external capacitor (typically 1µF) to shunt high-frequency noise from the internal zener core. Adding this capacitor reduces output noise in the 10Hz–1kHz band by >15dB, as verified in the device's typical operating characteristics. Leaving NR open disables this feature with no adverse effect on basic regulation performance.
MAX6250BCPA 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:
- ±0.1%
- Temperature Coefficient:
- 5ppm/°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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX6250BCPA FAQ
1.How can I place an order for MAX6250BCPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6250BCPA 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 MAX6250BCPA reliable?
The price and inventory of MAX6250BCPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6250BCPA is usually 5 days.
3.What payment methods are accepted for MAX6250BCPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6250BCPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6250BCPA?
MAX6250BCPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6250BCPA 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 MAX6250BCPA?
For technical support, including MAX6250BCPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6250BCPA requirements.
6.How does Aetrix verify that MAX6250BCPA is sourced from the original manufacturer or authorized distributors?
All MAX6250BCPA 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 MAX6250BCPA meets industry standards.
7.What is the process for return or replacement of MAX6250BCPA?
All MAX6250BCPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX6250BCPA, 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 MAX6250BCPA part is unused and in its original packaging.
Return procedure for MAX6250BCPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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