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Analog Devices Inc./Maxim Integrated MAX6241ACSA+
- Part No.:
- MAX6241ACSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6241ACSA+.pdf
- Description:
- IC VREF SERIES 0.02% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,463
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Product details
Overview
MAX6241ACSA+ 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 MAX6241ACSA+ datasheet, MAX6241ACSA+ pinout, MAX6241ACSA+ application, or MAX6241ACSA+ equivalent, key selection criteria include its guaranteed 15mA source/sink capability, industry-standard 8-pin SO package, low 2.9mA supply current, and optional external trim/noise reduction features critical for 16-bit data-conversion stability.
Technical Context
The MAX6241ACSA+ employs buried-zener core technology with on-chip temperature compensation to achieve laboratory-grade thermal stability without heater power. Its output remains stable across 0°C to +70°C ambient with ≤2.0ppm/°C max drift over that range.
It delivers regulated 4.096V referenced to GND with full-spectrum load regulation (±15mA sourcing/sinking), low 18Ω high-frequency output impedance, and ripple rejection >85dB at 1kHz-enabling direct use in sensitive analog front-ends without post-regulation filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±1mV at +25°C - matches 12-bit DAC full-scale step (4096 codes) and enables exact binary-ratio scaling in digital multimeters. |
| Tempco (Max) | 2.0ppm/°C (0°C to +70°C) - ensures ≤82µV drift over industrial temperature range, supporting <16-bit monotonicity in precision converters. |
| Noise (0.1–10Hz) | 2.4µVP-P - contributes <0.6 LSB noise in 16-bit 4.096V systems, preserving effective resolution without external filtering. |
| Initial Accuracy | ±0.02% (±0.82mV) - eliminates need for system-level calibration in factory-test fixtures and portable calibrators. |
| Load Regulation | ≤6ppm/mA sourcing - maintains <25µV error at 15mA load, enabling direct drive of op-amp reference inputs and SAR ADC VREF pins. |
| Supply Current | 2.9mA max - supports low-power portable instruments and battery-backed precision sensors without compromising stability. |
| Long-Term Stability | 20ppm/1000h - guarantees <0.008% drift per year, meeting calibration standard traceability requirements for lab equipment. |
Pinout & Package
MAX6241ACSA+ uses an 8-pin SO (Small Outline) package with industry-standard footprint (S8+5, outline 21-0041), RoHS-compliant lead-free finish, and 1.27mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | I.C. | Internally connected; electrically isolated from signal path-must be left unconnected on PCB. |
| 2 | IN | Positive input (8V–36V); supplies internal zener and bias circuits-requires ≥10V for specified performance. |
| 3 | NR | Noise reduction node; accepts 1µF capacitor to reduce wideband noise by >20dB without affecting DC accuracy. |
| 4 | GND | Analog ground reference; must be star-connected to minimize ground bounce in mixed-signal systems. |
| 5 | TRIM | External voltage adjust input; enables ±24mV (±0.59%) trimming via 10kΩ potentiometer without degrading tempco. |
| 6 | OUT | Stable 4.096V reference output; capable of sourcing/sinking ±15mA while maintaining <10ppm line/load regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core | Delivers lowest 1/f noise (2.4µVP-P) and highest long-term stability (20ppm/1000h) among precision references in 8-SO form factor. |
| Optional NR capacitor | 1µF on NR pin reduces broadband noise by up to 30dB without requiring layout changes or additional regulators. |
| Full ±15mA drive | Eliminates need for external buffer op-amps when driving multiple ADCs, DACs, or analog switches in ATE systems. |
| Stable with all capacitive loads | Operates reliably with 0–100µF output capacitance-supports ceramic bypassing for EMI suppression without oscillation risk. |
| Industry-standard pinout | Pin-compatible with legacy MAX62xx family and many competing 4.096V references-enables drop-in replacement in existing designs. |
Applications
| Digital Multimeter Reference | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: High-accuracy handheld and benchtop DMMs requiring 6½-digit resolution and NIST-traceable voltage standards. IC Role / Device Role / Timing Role: Primary 4.096V reference for dual-slope and sigma-delta ADCs, providing absolute scaling for ohms/volts/amps measurements. Use Value: ±0.02% initial accuracy and 2.0ppm/°C tempco ensure pass/fail compliance with IEC 61010-1 Class 0.005 specifications without annual recalibration. |
Use Scenario: Rack-mounted ATE systems performing parametric testing of ADCs, DACs, and precision amplifiers at production volume. IC Role / Device Role / Timing Role: Master reference for multi-channel stimulus/response measurement cards, synchronized across 16+ channels via shared REFOUT bus. Use Value: 15mA sink/source capability allows single MAX6241ACSA+ to drive reference inputs of eight 16-bit SAR ADCs simultaneously, reducing BOM count and channel-to-channel skew. |
| Portable Calibration Standard | Industrial Process Controller |
Use Scenario: Battery-powered field calibrators used to verify 4–20mA transmitters, RTD conditioners, and loop-powered sensors. IC Role / Device Role / Timing Role: Low-power, high-stability reference for programmable voltage/current sources generating precise 100mV–10V test signals. Use Value: 2.9mA supply current and 18mW dissipation enable >12-hour operation on AA batteries while maintaining <10ppm total error over 0–50°C ambient. |
Use Scenario: DIN-rail mounted PLC analog I/O modules requiring long-life, maintenance-free voltage references for sensor signal conditioning. IC Role / Device Role / Timing Role: Isolated reference for 24-bit ΣΔ ADCs measuring thermocouple, strain gauge, and pressure transducer outputs. Use Value: 20ppm/1000h long-term stability ensures <0.01% gain drift over 5-year service life-meeting SIL-2 functional safety requirements for process shutdown systems. |
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, 1.5ppm/°C max tempco, 1.75µVP-P noise, 10mA max output, SO-8 package | Lower noise but reduced drive strength; requires external buffer for >10mA loads | Select when ultra-low noise dominates over load drive-e.g., metrology bridges or low-current sensor excitation. |
| REF5040AIDR | 4.096V, 3ppm/°C max tempco, 3.5µVP-P noise, ±10mA output, SO-8 package | Higher tempco and noise; wider input range (4.5–18V); lower quiescent current (1.1mA) | Select for battery-operated devices needing extended input range and sub-2mA supply current, accepting moderate accuracy trade-offs. |
Compared with ADR444BRZ and REF5040AIDR, the MAX6241ACSA+ uniquely balances 15mA drive, 2.0ppm/°C tempco, and 2.4µVP-P noise in a single SO-8 device-making it optimal for ATE and DMM designs where simultaneous high drive, low drift, and low noise are non-negotiable.
Availability
MAX6241ACSA+ is available at Aetrix Electronics and suitable for high-resolution analog-to-digital conversion, automated test equipment, and portable calibration standards requiring stable component supply across extended production lifecycles.
Supply support for MAX6241ACSA+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX62xx family was engineered specifically for metrology-grade voltage reference needs-prioritizing ultra-low drift, buried-zener noise performance, and robust load regulation in compact surface-mount packages.
FAQ
What is the maximum input voltage for MAX6241ACSA+?
The MAX6241ACSA+ 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 in the 8-SO package. For reliable long-term performance at +70°C ambient, VIN should not exceed 36V to stay within the 471mW derated power limit.
Can MAX6241ACSA+ drive a 10kΩ load directly?
Yes, MAX6241ACSA+ can directly drive a 10kΩ load at 4.096V with only 0.41mA current draw-well within its ±15mA sourcing/sinking capability. Load regulation remains ≤6ppm/mA, contributing less than 2.5µV error, making it suitable for high-impedance op-amp reference inputs and microcontroller ADC references without buffering.
Does MAX6241ACSA+ require an output capacitor?
No, MAX6241ACSA+ is stable with 0µF to 100µF output capacitance and does not require an output capacitor for stability. However, adding a 1–10µF ceramic capacitor at the OUT pin reduces high-frequency noise and improves transient response during dynamic load switching-common in multiplexed ADC systems.
How does the TRIM pin function on MAX6241ACSA+?
The TRIM pin on MAX6241ACSA+ accepts an external voltage divider (e.g., 10kΩ pot between OUT and GND) to adjust output voltage by ±24mV (±0.59%). This adjustment does not degrade temperature coefficient or long-term stability, and the TRIM pin draws negligible current-enabling precision calibration without impacting reference integrity.
Is MAX6241ACSA+ compatible with lead-free reflow soldering?
Yes, MAX6241ACSA+ carries the "+" suffix indicating RoHS-compliant, lead-free construction and is qualified for standard Pb-free reflow profiles with peak temperature up to +260°C (per JEDEC J-STD-020). The 8-SO package has been validated for compatibility with both SnPb and lead-free assembly processes.
MAX6241ACSA+ 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:
- Active
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX6241ACSA+ FAQ
1.How can I place an order for MAX6241ACSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6241ACSA+ 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 MAX6241ACSA+ reliable?
The price and inventory of MAX6241ACSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6241ACSA+ is usually 5 days.
3.What payment methods are accepted for MAX6241ACSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6241ACSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6241ACSA+?
MAX6241ACSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6241ACSA+ 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 MAX6241ACSA+?
For technical support, including MAX6241ACSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6241ACSA+ requirements.
6.How does Aetrix verify that MAX6241ACSA+ is sourced from the original manufacturer or authorized distributors?
All MAX6241ACSA+ 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 MAX6241ACSA+ meets industry standards.
7.What is the process for return or replacement of MAX6241ACSA+?
All MAX6241ACSA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6241ACSA+, 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 MAX6241ACSA+ part is unused and in its original packaging.
Return procedure for MAX6241ACSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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