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Analog Devices Inc./Maxim Integrated MAX6241ACPA
- Part No.:
- MAX6241ACPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX6241ACPA.pdf
- Description:
- IC VREF SERIES 0.02% 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,846
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Product details
Overview
MAX6241ACPA from Maxim Integrated is a precision 4.096V buried-zener voltage reference IC with 1.0ppm/°C max temperature coefficient, ±0.02% initial accuracy, and 2.4µVP-P (0.1Hz–10Hz) output noise-designed for high-resolution ADC/DAC biasing in metrology-grade instrumentation and automated test equipment.
For engineers reviewing the MAX6241ACPA datasheet, MAX6241ACPA pinout, MAX6241ACPA application, or MAX6241ACPA equivalent, this device delivers laboratory-grade stability in an 8-pin plastic DIP package with guaranteed ±15mA sourcing/sinking, low 2.9mA supply current, and optional external trim/noise reduction-critical for 16-bit+ data acquisition systems requiring long-term drift <20ppm/1000h.
Technical Context
The MAX6241ACPA uses buried-zener core technology with on-chip temperature compensation to achieve near-zero curvature over 0°C to +70°C, enabling flat thermal drift without heater power. Its output impedance remains below 1Ω up to 10kHz, supporting fast load transients in precision DAC buffers.
It features dual-path regulation: line regulation of ≤7ppm/V (10V–36V input) and load regulation of ≤6ppm/mA (0–15mA sourcing), with turn-on settling to ±0.01% in 8µs-enabling use in burst-mode sampling systems where reference stability must be established before conversion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±1mV at +25°C - enables exact 12-bit full-scale alignment (4096 codes) in SAR ADCs without digital gain calibration. |
| Tempco (Max) | 1.0ppm/°C - ensures ≤±0.41mV drift over 0°C to +70°C ambient, critical for uncalibrated industrial sensor front-ends. |
| Noise (0.1–10Hz) | 2.4µVP-P - contributes <0.6 LSB RMS noise in 16-bit 4.096V-range systems, preserving effective resolution. |
| Initial Accuracy | ±0.02% - guarantees absolute output tolerance of ±0.82mV, eliminating need for post-manufacture trimming in production test fixtures. |
| Load Current | ±15mA - supports direct driving of op-amp inputs, ADC reference buffers, and precision current sources without external gain stages. |
| Long-Term Stability | 20ppm/1000h - ensures <±0.08mV drift per 1000 hours, qualifying for calibration lab reference standards with annual recalibration cycles. |
| Supply Current | 2.9mA max - enables low-power portable metrology instruments with battery life extended by >20% vs. older references. |
Pinout & Package
MAX6241ACPA is housed in an 8-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole mounting. Pin 1 is marked with a 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 internal nodes - must be left floating; no trace routing or soldering permitted. |
| 2 | IN | Positive supply input (8V–36V); requires ≥10µF bulk bypass to GND for ripple rejection >80dB at 1kHz. |
| 3 | NR | Noise reduction node - connect 1µF capacitor to GND to reduce wideband noise by 30%; open-circuit if unused. |
| 4 | GND | Analog ground reference - must tie directly to clean system ground plane with shortest possible path. |
| 5 | TRIM | External voltage adjust input - accepts 10kΩ potentiometer between OUT and GND for ±24mV (±0.59%) fine-tuning without affecting tempco. |
| 6 | OUT | Precision 4.096V reference output - stable with 0–100µF capacitive loads; drives 15mA sink/source with <10µV droop. |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core | Enables 2.4µVP-P ultra-low noise and 1.0ppm/°C tempco - outperforms bandgap references by 5× in 16-bit DAC applications. |
| Optional NR capacitor | 1µF on NR pin reduces 10Hz–1kHz noise by 30%, eliminating need for external low-noise op-amp filtering stages. |
| ±15mA drive capability | Directly powers REF inputs of 16-bit SAR ADCs (e.g., AD768x) and precision op-amps without buffer amplifiers or layout complexity. |
| Stable with all capacitive loads | Operates reliably with 0–100µF output capacitance - simplifies EMI filtering and eliminates oscillation risk in noisy industrial environments. |
| Trim-adjustable output | ±24mV adjustment range via TRIM pin allows factory calibration to exact system VREF target, reducing BOM count across product variants. |
Applications
| High-Resolution Data Acquisition | Digital Voltmeters (DVMs) |
|---|---|
|
Use Scenario: 16-bit simultaneous-sampling ADC module in portable power quality analyzer measuring RMS voltage/current with 0.01% accuracy. IC Role / Device Role / Timing Role: Primary voltage reference for ADC reference input and analog front-end gain calibration. Use Value: 1.0ppm/°C tempco and 2.4µVP-P noise ensure <0.005% measurement error over 0–50°C ambient, meeting IEC 61000-4-30 Class A requirements. |
Use Scenario: Benchtop 6½-digit DVM requiring 1-year calibration stability without field adjustment. IC Role / Device Role / Timing Role: Master reference standard for auto-zeroed integrator and ratiometric scaling circuitry. Use Value: 20ppm/1000h long-term stability and ±0.02% initial accuracy eliminate annual recalibration drift beyond ±10ppm, extending calibration interval to 2 years. |
| ATE Equipment Reference | Precision Current Sources |
|
Use Scenario: Pin-electronics channel in semiconductor ATE system generating programmable 4.096V reference for DUT bias and comparator thresholds. IC Role / Device Role / Timing Role: Stable excitation source for Kelvin sensing and parametric test sequences. Use Value: 8µs turn-on settling and ±15mA drive enable sub-10µs reference establishment before test pulse, increasing throughput by 12% vs. legacy references. |
Use Scenario: 4-wire RTD transmitter with 4–20mA loop output calibrated to NIST-traceable standards. IC Role / Device Role / Timing Role: Excitation voltage source for Wheatstone bridge and gain-setting reference for current DAC. Use Value: Load regulation ≤6ppm/mA ensures <±0.002% current error across full 20mA span, satisfying ANSI/ISA-50.00.01 loop accuracy class. |
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 output, 1.5ppm/°C max tempco, 1.8µVP-P noise, SO-8 package only | Lacks TRIM/NR pins; requires external filter for low-frequency noise control | Preferred when board space is constrained and trimming is unnecessary; not drop-in due to missing TRIM/NR functionality. |
| REF5040AID | 4.096V output, 3ppm/°C max tempco, 3.5µVP-P noise, 8-pin SOIC with different pinout | Higher noise and tempco; no NR pin; TRIM pin present but ±10mV range only | Suitable for cost-sensitive industrial controls where 0.05% accuracy suffices; requires PCB redesign due to non-compatible pin mapping. |
Compared with ADR444BRZ and REF5040AID, the MAX6241ACPA offers superior 1.0ppm/°C tempco and integrated NR/TRIM functions-making it the only choice for metrology-grade DVMs and ATE systems demanding sub-10ppm thermal drift and field-calibratable output.
Availability
MAX6241ACPA is available at Aetrix Electronics and suitable for high-resolution analog-to-digital converters, digital voltmeters, and automated test equipment requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for MAX6241ACPA 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-with emphasis on signal integrity and reliability in harsh environments.
The MAX62xx family targets metrology, calibration, and high-end test equipment, delivering laboratory-grade voltage reference performance in commercial- and industrial-temperature plastic packages-replacing oven-controlled references in cost-sensitive applications.
FAQ
What is the maximum input voltage rating for MAX6241ACPA?
The MAX6241ACPA supports an input voltage range of 8V to 36V. Absolute maximum rating is +40V on the IN pin, but operation above 36V risks exceeding safe power dissipation limits. For reliable long-term use at +70°C ambient, VIN should not exceed 36V to maintain junction temperature within specification.
Can MAX6241ACPA drive a 10µF output capacitor without instability?
Yes, the MAX6241ACPA is explicitly characterized as stable with capacitive loads from 0µF to 100µF across full temperature and load ranges. This eliminates need for isolation resistors or external compensation-enabling direct connection to large bulk capacitors used in EMI filtering for industrial power supplies.
Does MAX6241ACPA require external components for basic operation?
No-MAX6241ACPA operates fully functional with only IN and GND connected. The NR and TRIM pins are optional: NR accepts a 1µF capacitor for noise reduction, and TRIM supports a 10kΩ potentiometer for ±24mV output adjustment. Both may be left unconnected for default configuration.
What is the typical supply current of MAX6241ACPA at +25°C?
The typical supply current of MAX6241ACPA is 2.7mA at +25°C and VIN = +10V. Maximum supply current is 3.2mA across the full operating temperature range (0°C to +70°C), enabling efficient thermal design in densely packed instrumentation PCBs.
Is MAX6241ACPA pin-compatible with other devices in the MAX62xx family?
Yes-MAX6241ACPA shares identical pinout and footprint with MAX6225ACPA and MAX6250ACPA, differing only in output voltage (4.096V vs. 2.500V/5.000V). This allows single PCB design reuse across multiple reference voltages in modular test equipment platforms.
MAX6241ACPA 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):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.02%
- Temperature Coefficient:
- 2ppm/°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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX6241ACPA FAQ
1.How can I place an order for MAX6241ACPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6241ACPA 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 MAX6241ACPA reliable?
The price and inventory of MAX6241ACPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6241ACPA is usually 5 days.
3.What payment methods are accepted for MAX6241ACPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6241ACPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6241ACPA?
MAX6241ACPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6241ACPA 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 MAX6241ACPA?
For technical support, including MAX6241ACPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6241ACPA requirements.
6.How does Aetrix verify that MAX6241ACPA is sourced from the original manufacturer or authorized distributors?
All MAX6241ACPA 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 MAX6241ACPA meets industry standards.
7.What is the process for return or replacement of MAX6241ACPA?
All MAX6241ACPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX6241ACPA, 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 MAX6241ACPA part is unused and in its original packaging.
Return procedure for MAX6241ACPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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