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Analog Devices Inc./Maxim Integrated MAX6241BCSA+T
- Part No.:
- MAX6241BCSA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6241BCSA+T.pdf
- Description:
- IC VREF SERIES 0.1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,221
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Product details
Overview
MAX6241BCSA+T from Maxim Integrated is a precision 4.096V buried-zener voltage reference IC with 5.0ppm/°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 test equipment and industrial control systems.
For engineers reviewing the MAX6241BCSA+T datasheet, MAX6241BCSA+T pinout, MAX6241BCSA+T application, or MAX6241BCSA+T equivalent, key selection criteria include guaranteed ±15mA sink/source capability, 8-pin SO package compatibility, low 20ppm/1000h long-term stability, and optional external trim/noise reduction support.
Technical Context
This device uses buried-zener topology with on-chip temperature compensation to achieve near-zero thermal curvature over –40°C to +85°C. Its output remains stable across capacitive loads up to 100µF without external compensation.
Line regulation is specified at 2–5ppm/V (10V–36V input range), load regulation at 1–7ppm/mA (sourcing/sinking), and turn-on settling time is 8µs to ±0.01%-enabling fast-cycling precision measurement systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.004V at +25°C - enables direct interface with 12-bit and 16-bit SAR/ΣΔ ADCs using standard 4.096V full-scale references. |
| Tempco (Max) | 5.0ppm/°C - ensures ≤±0.35mV drift over –40°C to +85°C ambient, critical for unheated lab-grade instrumentation. |
| Initial Accuracy | ±0.02% - guarantees absolute output tolerance of ±0.82mV, eliminating need for system-level calibration in many ATE applications. |
| Output Noise | 2.4µVP-P (0.1Hz–10Hz) - supports 16-bit effective resolution in low-frequency precision digitizers without additional filtering. |
| Load Current | ±15mA - drives heavy capacitive loads or multiple op-amp reference inputs without gain error or instability. |
| Long-Term Stability | 20ppm/1000h - maintains calibration integrity over extended deployment in process control transmitters and field instruments. |
| Supply Current | 1.9–3.2mA - enables low-power operation in battery-backed data loggers while preserving noise and accuracy specs. |
Pinout & Package
MAX6241BCSA+T is housed in an 8-pin SO (Small Outline) package with industry-standard footprint (S8+5, outline 21-0041), RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | I.C. (Internally Connected) | No external connection required; internal bonding only-must remain unconnected on PCB. |
| 2 | IN | Positive supply input (8V–36V); requires local 2.2µF bypass capacitor for ripple rejection and transient immunity. |
| 3 | NR | Noise reduction node; accepts 1µF capacitor to reduce wideband noise-optional but recommended for sub-16-bit noise floors. |
| 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 trim range (±0.59%) via 10kΩ potentiometer-preserves tempco and stability. |
| 6 | OUT | Precision 4.096V reference output; capable of sourcing/sinking ±15mA with <10Ω output impedance above 10kHz. |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core | Delivers lowest intrinsic noise (2.4µVP-P) and highest long-term stability (20ppm/1000h) among monolithic references in this class. |
| Stable for all capacitive loads | Eliminates need for output isolation resistors or ferrite beads-supports direct connection to ADC reference inputs and op-amp buffers. |
| Optional NR capacitor | 1µF on NR pin reduces 10Hz–1kHz noise by >30%, enabling clean reference for sigma-delta modulators without added LDO stages. |
| Industry-standard 8-pin SO pinout | Enables drop-in replacement of legacy references (e.g., REF02, LT1021) without PCB redesign or layout changes. |
| Trim-adjustable output | ±24mV trim range allows fine-tuning to compensate for board-level errors or match system gain requirements without recalibration. |
Applications
| High-Resolution Data Acquisition | Digital Voltmeters |
|---|---|
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 VREF input, providing stable 4.096V scale with minimal code-width variation across temperature. Use Value: Enables true 16-bit ENOB by limiting reference-induced integral nonlinearity to <0.5 LSB over –10°C to +60°C operating range. | Use Scenario: Benchtop 6½-digit DVM requiring traceable 4.096V reference for autoranging and auto-zero functions. IC Role / Device Role / Timing Role: Master reference source for dual-slope integrator and internal DAC calibration, referenced to metrology-grade standards. Use Value: Delivers <±1ppm/h drift during 1-hour warm-up period, meeting ANSI C12.20 Class 0.1 metering accuracy requirements. |
| ATE Equipment | Precision Current Sources |
Use Scenario: Semiconductor parametric tester generating programmable bias voltages for wafer-level DC characterization. IC Role / Device Role / Timing Role: Precision reference for DAC-controlled current sources driving DUTs, synchronized with digital pattern generator timing. Use Value: Guarantees <±20ppm total error (initial + tempco + line/load regulation) across 100ms test cycles, ensuring repeatability within 0.005%. | Use Scenario: 4–20mA loop transmitter with HART modulation, where reference stability defines loop accuracy and zero/span drift. IC Role / Device Role / Timing Role: Reference for current-setting DAC and analog front-end amplifier, directly tied to loop compliance voltage. Use Value: Maintains <±0.02% full-scale error over 15-year field life, satisfying IEC 61290-1-2 long-term reliability requirements for industrial transmitters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5040IDR | 4.096V, 3ppm/°C max tempco, 1.6µVP-P noise, but only ±10mA output drive and requires 2.7V–18V supply. | Better noise/tempco but lower drive limits use in low-current sensor interfaces-not suitable for multi-ADC or op-amp buffer loads. | Select REF5040IDR when ultra-low noise dominates over load flexibility; avoid if ≥±12mA sourcing is needed. |
| ADR444BRZ | 4.096V, 3ppm/°C max tempco, 1.8µVP-P noise, ±10mA drive, and higher 4.2mA supply current vs. MAX6241BCSA+T's 3.2mA max. | Superior tempco and noise, but higher quiescent power and tighter supply voltage range (4.5V–18V) limit use in wide-input industrial supplies. | Choose ADR444BRZ for metrology-grade bench instruments; prefer MAX6241BCSA+T for embedded systems with 8–36V unregulated rails. |
Compared with REF5040IDR and ADR444BRZ, MAX6241BCSA+T offers the widest supply range (8–36V), highest output current (±15mA), and best balance of noise (2.4µVP-P), tempco (5ppm/°C), and long-term stability (20ppm/1000h) for cost-sensitive industrial and ATE designs.
Availability
MAX6241BCSA+T 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 calibration integrity.
Supply support for MAX6241BCSA+T 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 is a semiconductor company specializing in analog and mixed-signal ICs for industrial, communications, computing, and consumer applications.
The MAX62xx series was designed specifically for high-accuracy, low-noise voltage reference applications in precision data acquisition, metrology, and automated test systems-prioritizing stability, noise performance, and robustness over wide supply and temperature ranges.
FAQ
What is the maximum input voltage rating for MAX6241BCSA+T?
The MAX6241BCSA+T has an absolute maximum input voltage of +40V on the IN pin, but its operational input range is specified from +8V to +36V. Operation outside the 8–36V range may degrade accuracy or increase noise; sustained exposure above +40V risks permanent damage. Always use a series resistor or TVS diode for transient protection in industrial environments where supply spikes exceed +36V.
Does MAX6241BCSA+T require an external capacitor on the NR pin?
No, the NR pin on MAX6241BCSA+T is optional-leave it open if wideband noise reduction is not required. When used, a 1µF ceramic capacitor to ground reduces 10Hz–1kHz noise by ~35%; larger values yield diminishing returns. The device remains fully functional and stable without any NR capacitor, making it suitable for space-constrained layouts where every mm² matters.
Can MAX6241BCSA+T drive multiple ADC reference inputs simultaneously?
Yes, MAX6241BCSA+T can drive multiple ADC reference inputs provided the total load current stays within ±15mA. For example, it can supply five 16-bit SAR ADCs each drawing 2mA reference current. Use short, low-inductance traces and individual 100nF ceramic bypass caps at each ADC VREF pin to maintain PSRR and prevent crosstalk-induced noise coupling.
What is the trim adjustment range for MAX6241BCSA+T?
The TRIM pin on MAX6241BCSA+T supports an external adjustment range of ±24mV (±0.59%) around the nominal 4.096V output, achieved using a 10kΩ potentiometer between OUT and GND with wiper connected to TRIM. This adjustment does not affect temperature coefficient or long-term stability-only the DC offset-and is fully characterized across the –40°C to +85°C range.
Is MAX6241BCSA+T compatible with capacitive loads up to 100µF?
Yes, MAX6241BCSA+T is explicitly characterized and guaranteed stable with capacitive loads from 0µF to 100µF across the full –40°C to +85°C temperature range and 0–15mA load current. This eliminates need for series isolation resistors or complex compensation networks-enabling direct connection to large bulk capacitors used in portable instrument power domains or noisy industrial bus lines.
MAX6241BCSA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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:
- ±0.1%
- Temperature Coefficient:
- 5ppm/°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
MAX6241BCSA+T FAQ
1.How can I place an order for MAX6241BCSA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6241BCSA+T 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 MAX6241BCSA+T reliable?
The price and inventory of MAX6241BCSA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6241BCSA+T is usually 5 days.
3.What payment methods are accepted for MAX6241BCSA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6241BCSA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6241BCSA+T?
MAX6241BCSA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6241BCSA+T 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 MAX6241BCSA+T?
For technical support, including MAX6241BCSA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6241BCSA+T requirements.
6.How does Aetrix verify that MAX6241BCSA+T is sourced from the original manufacturer or authorized distributors?
All MAX6241BCSA+T 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 MAX6241BCSA+T meets industry standards.
7.What is the process for return or replacement of MAX6241BCSA+T?
All MAX6241BCSA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6241BCSA+T, 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 MAX6241BCSA+T part is unused and in its original packaging.
Return procedure for MAX6241BCSA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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