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Analog Devices Inc./Maxim Integrated MAX6241BCSA
- Part No.:
- MAX6241BCSA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6241BCSA.pdf
- Description:
- IC VREF SERIES 0.1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,884
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Product details
Overview
MAX6241BCSA 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 datasheet, MAX6241BCSA pinout, MAX6241BCSA application, or MAX6241BCSA equivalent, this device delivers laboratory-grade stability in an 8-pin SO package with trim-adjustable output, noise-reduction capability, and ±15mA sourcing/sinking for demanding analog signal chains.
Technical Context
The MAX6241BCSA uses buried-zener topology with on-chip temperature compensation to achieve flat thermal drift across –40°C to +85°C. Its low 18mW typical power consumption and stable operation into 0–100µF capacitive loads enable direct integration into sensitive measurement front-ends without external buffering.
It supports external trimming via the TRIM pin (±24mV to ±40mV range) and wideband noise reduction via the NR pin (1µF capacitor), both functions validated across full temperature and load conditions without degrading long-term stability (20ppm/1000h).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.001V at +25°C - tight tolerance enables 16-bit DAC/ADC full-scale calibration without post-trim. |
| Temp Coefficient | 5.0ppm/°C max (C grade, 0°C to +70°C) - ensures ≤0.2mV drift over industrial ambient range. |
| Initial Accuracy | ±0.02% - translates to ±0.82mV absolute error at 4.096V, critical for metrology-grade references. |
| Output Noise | 2.4µVP-P (0.1Hz–10Hz) - ultra-low flicker noise preserves SNR in high-dynamic-range data converters. |
| Load Regulation | ≤6ppm/mA sourcing (0–15mA) - maintains voltage stability under varying DAC or sensor bias current demands. |
| Supply Current | 2.9mA typical - enables low-power portable instrumentation without sacrificing reference integrity. |
| Long-Term Stability | 20ppm/1000h - predictable aging behavior supports 10+ year calibration intervals in ATE systems. |
Pinout & Package
MAX6241BCSA is housed in an 8-pin SO (Small Outline) package per outline 21-0041, RoHS-compliant, with 1.27mm pitch and exposed pad not present. Pin 1 is marked by bevelled corner 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) | No external connection required; floating or tied to GND has no functional effect. |
| 2 | IN | Positive supply input (8V–36V); requires local 0.1µF bypass to GND for ripple rejection. |
| 3 | NR | Noise reduction node; connect 1µF capacitor to GND to reduce wideband noise by >10dB above 10Hz. |
| 4 | GND | Analog ground reference; star-point connection recommended to minimize ground bounce in mixed-signal systems. |
| 5 | TRIM | External voltage divider tap for ±24mV to ±40mV output adjustment; open-circuit = nominal VOUT. |
| 6 | OUT | Stable 4.096V reference output; capable of sourcing/sinking ±15mA with <10µs settling to ±0.01%. |
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 its class. |
| Trim-adjustable output | Enables system-level calibration via external potentiometer; ±24mV to ±40mV range preserves tempco and noise performance. |
| Noise-reduction pin (NR) | Allows 1µF capacitor addition to cut broadband noise without requiring redesign of output filtering or layout. |
| Capacitive-load tolerant | Stable with 0–100µF output capacitance - eliminates need for isolation resistors in noisy environments or long trace applications. |
| Industry-standard pinout | Pin-compatible with legacy MAX62xx family and many competing 4.096V references, simplifying second-source qualification. |
Applications
| High-Resolution Data Acquisition | Digital Voltmeter (DVM) |
|---|---|
Use Scenario: 16-bit SAR ADC front-end in portable multimeter with auto-ranging and battery-powered operation. IC Role / Device Role / Timing Role: Primary voltage reference for ADC full-scale calibration and internal DAC-based offset correction. Use Value: 4.096V output matches common 16-bit binary full-scale (65536 × 62.5µV), eliminating scaling math and reducing firmware complexity. | Use Scenario: Benchtop 6½-digit DVM requiring <10ppm linearity and <0.1ppm/h drift during extended measurements. IC Role / Device Role / Timing Role: Master reference for dual-slope integrator and auto-zero amplifier stages. Use Value: 5.0ppm/°C tempco and 20ppm/1000h aging ensure measurement repeatability across 8-hour calibration sessions without re-zeroing. |
| Automated Test Equipment (ATE) | Precision Current Source |
Use Scenario: Channel card in semiconductor wafer prober supplying programmable bias to DUT while monitoring leakage currents. IC Role / Device Role / Timing Role: Stable excitation source for Kelvin sensing and ratiometric current measurement circuits. Use Value: ±15mA sourcing/sinking capability allows direct drive of 2-wire/4-wire force-sense loads without external op-amps or MOSFETs. | Use Scenario: Programmable 4–20mA transmitter for industrial pressure transducers with HART modulation support. IC Role / Device Role / Timing Role: Reference for voltage-to-current conversion stage using matched resistor networks and rail-to-rail op-amp. Use Value: Low 2.4µVP-P noise prevents current ripple that would corrupt HART digital signaling overlay on analog loop. |
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, 1.6µVP-P noise, but 3.5mA supply current and no TRIM/NR pins. | Lacks external trim and noise-reduction flexibility; better suited for fixed-reference, low-drift systems where board space is constrained. | Select REF5040IDR when ultimate tempco (3ppm/°C) outweighs need for field calibration or noise tailoring. |
| ADR444BRZ | 4.096V, 3ppm/°C max, 1.8µVP-P noise, SO-8 package, but only ±10mA output and no NR pin. | Lower drive strength limits use in high-current reference buffers; no noise-reduction path complicates EMI-sensitive designs. | Choose ADR444BRZ for ultra-low-noise applications where load current stays below 10mA and layout permits tight filtering. |
Compared with REF5040IDR and ADR444BRZ, the MAX6241BCSA offers unique combination of trim adjustability, dedicated noise-reduction terminal, and ±15mA drive-all in the same SO-8 footprint-making it optimal for field-serviceable, high-channel-count instrumentation where flexibility and robustness are prioritized over marginal spec improvements.
Availability
MAX6241BCSA is available at Aetrix Electronics and suitable for high-resolution analog-to-digital conversion, automated test equipment, and precision current source applications requiring stable component supply across extended production lifecycles.
Supply support for MAX6241BCSA 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 series was developed specifically for metrology-grade voltage references in data acquisition, test instrumentation, and industrial control-emphasizing ultra-low noise, sub-ppm/°C stability, and robust load regulation.
FAQ
What is the maximum operating temperature range for the MAX6241BCSA?
The MAX6241BCSA is rated for 0°C to +70°C operation (C-grade temperature range). This is confirmed in the Ordering Information table, where "MAX6241BCSA+" explicitly specifies the 0°C to +70°C range. It is not rated for extended industrial (–40°C to +85°C) or military (–55°C to +125°C) ranges-those require suffixes "E" or "MJA".
Can the MAX6241BCSA drive a 10kΩ load while maintaining specified accuracy?
Yes-the MAX6241BCSA can drive a 10kΩ load (409.6µA at 4.096V) with full accuracy. Its load regulation is specified at ≤6ppm/mA sourcing, meaning ≤2.5ppm error (≈10.2µV) at 409.6µA. This is well within the ±0.02% (±0.82mV) initial accuracy and does not require external buffering.
Does the MAX6241BCSA require an external capacitor on the NR pin for basic operation?
No-the NR pin is optional. The MAX6241BCSA operates fully specified with NR left open. Adding a 1µF capacitor to NR reduces wideband noise (10Hz–1kHz) but does not affect DC accuracy, tempco, or stability. Omitting the capacitor simplifies layout and reduces BOM count when noise requirements permit.
Is the MAX6241BCSA pin-compatible with other members of the MAX62xx family?
Yes-the MAX6241BCSA shares identical 8-pin SO pinout and function mapping with MAX6225 and MAX6250 variants (e.g., MAX6225BCSA+, MAX6250BCSA+). Pins 1/7/8 are I.C., IN is pin 2, NR is pin 3, GND is pin 4, TRIM is pin 5, and OUT is pin 6 across all three output voltages.
What is the purpose of the TRIM pin on the MAX6241BCSA, and what is its adjustment range?
The TRIM pin on the MAX6241BCSA enables external fine-tuning of the output voltage using a voltage divider. Per Electrical Characteristics, it provides ±24mV to ±40mV adjustment range (±0.59% to ±0.98% of 4.096V), allowing system-level calibration to compensate for PCB trace resistance, ADC gain error, or sensor offset without altering the reference's inherent tempco or noise performance.
MAX6241BCSA 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:
- Obsolete
- 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 FAQ
1.How can I place an order for MAX6241BCSA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6241BCSA 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 reliable?
The price and inventory of MAX6241BCSA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6241BCSA is usually 5 days.
3.What payment methods are accepted for MAX6241BCSA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6241BCSA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6241BCSA?
MAX6241BCSA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6241BCSA 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?
For technical support, including MAX6241BCSA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6241BCSA requirements.
6.How does Aetrix verify that MAX6241BCSA is sourced from the original manufacturer or authorized distributors?
All MAX6241BCSA 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 meets industry standards.
7.What is the process for return or replacement of MAX6241BCSA?
All MAX6241BCSA units undergo pre-shipment inspection (PSI). If there is an issue with MAX6241BCSA, 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 part is unused and in its original packaging.
Return procedure for MAX6241BCSA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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