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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:1,849
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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 ATE systems.
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 18mW power consumption, and optional external trim/noise reduction.
Technical Context
The MAX6241ACPA+ employs buried-zener core technology with on-chip temperature compensation to achieve near-zero curvature over 0°C to +70°C, enabling sub-ppm/°C drift without oven control. Its low-output-impedance design maintains <1Ω at 1kHz and supports stable operation with 0–100µF capacitive loads.
It features dual-path regulation: line regulation of ≤7ppm/V (10–36V input) and load regulation of ≤6ppm/mA (0–15mA sourcing), with turn-on settling time of 8µs to ±0.01%-critical for fast-sampling data converters requiring repeatable reference establishment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±1mV at +25°C - enables exact 12-bit full-scale alignment in 4.096V-referenced SAR ADCs |
| Temp Coefficient | 1.0ppm/°C max (0°C to +70°C) - ensures ≤0.29mV total drift across industrial ambient range |
| Initial Accuracy | ±0.02% (±0.82mV) - eliminates need for system-level calibration in Class I digital multimeters |
| Output Noise | 2.4µVP-P (0.1Hz–10Hz), 2.0–4.0µVRMS (10Hz–1kHz) - preserves ENOB >16.5 bits in 16-bit ΣΔ converters |
| Load Current | ±15mA sourcing/sinking - drives multiple op-amp buffers or DAC reference inputs without gain error |
| Line Regulation | ≤7ppm/V (10–36V) - rejects ripple and supply variation in unregulated front-end power domains |
| Long-Term Stability | 20ppm/1000h - guarantees <0.05% output shift over 1 year in sealed calibration equipment |
Pinout & Package
MAX6241ACPA+ uses an 8-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole mounting. Pin 1 is top-left corner when notch faces up; pins 1, 7, and 8 are internally connected and must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 2 (IN) | Positive Power Input | Accepts 8–36V DC; internal regulator draws only 2.9mA typical - enables direct use from unregulated rails |
| 3 (NR) | Noise Reduction Node | Connects to 1µF capacitor to reduce wideband noise; open-circuit if unused - no impact on DC accuracy |
| 4 (GND) | Analog Ground Reference | Single-point return for reference output and trim circuitry - requires star grounding to avoid ground-loop errors |
| 5 (TRIM) | External Voltage Adjustment | Accepts 10kΩ potentiometer between OUT and GND for ±24mV trim - preserves tempco and long-term stability |
| 6 (OUT) | Precision Reference Output | Delivers 4.096V with <1Ω AC impedance up to 100kHz - suitable for driving 10kΩ+ loads or op-amp non-inverting inputs |
Key Features
| Feature | Design Value |
|---|---|
| Buried-Zener Core | Enables 2.4µVP-P ultra-low flicker noise - critical for sub-1µV measurement resolution in precision voltmeters |
| Trimmable Output | ±24mV adjustment range via external potentiometer - allows end-system calibration without trimming internal laser fuses |
| Noise Reduction Pin | Dedicated NR terminal accepts 1µF capacitor to suppress 10Hz–100kHz noise - improves SNR by ≥15dB in sensitive analog front-ends |
| Capacitive Load Immunity | Stable with 0–100µF output capacitance - permits use of large local decoupling without oscillation risk |
| Transient Response | 8µs settling to ±0.01% after power-on - synchronizes cleanly with FPGA-controlled sampling clocks in ATE sequencers |
Applications
| High-Resolution Data Acquisition | Digital Multimeter Calibration |
|---|---|
Use Scenario: 16-bit simultaneous-sampling ADC module in portable power quality analyzer measuring harmonics and RMS with 0.01% accuracy. IC Role / Device Role / Timing Role: Primary voltage reference for ADC full-scale scaling and offset nulling; referenced to system GND. Use Value: 1.0ppm/°C tempco and 2.4µVP-P noise ensure <0.005% gain error drift and maintain ENOB ≥15.8 across 0–50°C operating range. | Use Scenario: Benchtop 7½-digit DMM performing auto-calibration against internal standard before each measurement cycle. IC Role / Device Role / Timing Role: Stable 4.096V reference for ratiometric DAC-based voltage divider and comparator threshold generation. Use Value: ±0.02% initial accuracy and 20ppm/1000h long-term stability eliminate annual recalibration; TRIM pin enables field recalibration traceable to NIST standards. |
| Automated Test Equipment | Precision Current Source |
Use Scenario: PXI-based ATE card generating programmable test voltages for mixed-signal IC functional testing at 1MHz sample rate. IC Role / Device Role / Timing Role: Reference source for multiplying DACs and high-speed buffer amplifiers driving DUT power rails. Use Value: ±15mA drive capability and 8µs turn-on settling support rapid voltage step transitions (<10µs) without reference droop or overshoot. | Use Scenario: 4-wire Kelvin current source delivering 0–100mA with 100nA resolution for semiconductor parameter analyzers. IC Role / Device Role / Timing Role: Setpoint reference for op-amp-controlled MOSFET current mirror; OUT pin directly feeds op-amp non-inverting input. Use Value: Low 1.0ppm/°C tempco prevents current drift >100pA/°C; noise performance avoids adding uncertainty to picoampere-level measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5040AIDR | 4.096V, 3ppm/°C max, 1.6µVP-P noise, SO-8 package, 2.5mA supply current | Lower noise but higher tempco; requires external 10µF bypass for stability | Select for lower-noise bench instruments where board space is constrained and thermal gradient is minimal |
| ADR444BRZ | 4.096V, 1.5ppm/°C max, 3.5µVP-P noise, SO-8 package, 4.5mA supply current | Higher noise and supply current; includes enable pin for power cycling | Select when system-level power gating is required and 0.5ppm/°C tempco margin is acceptable |
Compared with REF5040AIDR and ADR444BRZ, the MAX6241ACPA+ offers superior temperature stability (1.0 vs. 1.5–3.0ppm/°C) and lower quiescent power (2.9mA vs. 2.5–4.5mA), making it optimal for thermally uncontrolled portable metrology tools where long-term drift dominates error budget.
Availability
MAX6241ACPA+ is available at Aetrix Electronics and suitable for high-resolution analog-to-digital conversion, digital multimeter calibration, and automated test equipment requiring stable component supply with traceable lot history 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 precision analog, mixed-signal, and power-management ICs for demanding industrial, medical, and test/measurement applications.
The MAX62xx family targets metrology-grade voltage references where sub-ppm/°C stability, ultra-low noise, and long-term repeatability outweigh cost or size constraints - specifically for calibration infrastructure and high-end data acquisition.
FAQ
What is the maximum input voltage rating for MAX6241ACPA+?
The MAX6241ACPA+ has an absolute maximum input voltage of +40V on the IN pin, with recommended operating range of 8V to 36V DC. Operation above 36V is permissible only for short transients (≤5s at VIN ≤ 40V); sustained operation beyond 36V risks exceeding thermal limits and degrading long-term stability. The device's internal regulator maintains consistent 4.096V output across this full range.
Can MAX6241ACPA+ drive a 10kΩ load while maintaining specified accuracy?
Yes, the MAX6241ACPA+ maintains its ±0.02% initial accuracy and 1.0ppm/°C tempco when sourcing or sinking up to ±15mA - sufficient for a 10kΩ load drawing 409.6µA at 4.096V. Load regulation is specified at ≤6ppm/mA, contributing <2.5ppm error (0.01mV) under full load, well within the ±0.82mV initial tolerance band.
Does MAX6241ACPA+ require an external capacitor on the NR pin for basic operation?
No, the NR pin may be left open for standard operation. A 1µF capacitor is optional and used only to reduce wideband noise (10Hz–100kHz); it does not affect DC accuracy, tempco, or long-term stability. The MAX6241ACPA+ delivers full specification compliance - including 2.4µVP-P low-frequency noise - without any external NR capacitor.
What is the purpose of the TRIM pin on MAX6241ACPA+, and how much adjustment does it provide?
The TRIM pin on MAX6241ACPA+ enables external fine-tuning of the output voltage using a 10kΩ potentiometer between OUT and GND. It provides ±24mV adjustment range (±0.59%) at room temperature, allowing system-level calibration without altering the device's intrinsic 1.0ppm/°C tempco or 20ppm/1000h long-term drift. The TRIM function remains effective across the full 0°C to +70°C operating range.
Is MAX6241ACPA+ compatible with ceramic output capacitors up to 100µF?
Yes, the MAX6241ACPA+ is explicitly characterized and guaranteed stable with output capacitance from 0µF to 100µF across all load currents (0–15mA). This includes X7R and C0G ceramic types commonly used for low-ESR decoupling. No series resistance or damping network is required - the internal compensation ensures unconditional stability per datasheet Figure 2 and Electrical Characteristics note.
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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