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Analog Devices Inc./Maxim Integrated MAX6341CSA
- Part No.:
- MAX6341CSA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX6341CSA.pdf
- Description:
- IC VREF SERIES 0.02% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,805
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Product details
Overview
MAX6341CSA from Maxim Integrated is a precision 4.096V voltage reference IC using buried-zener technology, delivering ±0.02% initial accuracy, 0.5ppm/°C typical temperature coefficient, and 2.4µVp-p (0.1Hz–10Hz) output noise. It sources/sinks ±15mA, operates from 8V to 36V input, and is optimized for high-resolution ADC/DAC biasing in industrial instrumentation.
For engineers reviewing the MAX6341CSA datasheet, MAX6341CSA pinout, MAX6341CSA application, or MAX6341CSA equivalent, key selection criteria include its 4.096V output matching standard 12-bit DAC full-scale ranges, low 1.9mA supply current at +25°C, stable operation with 0–100µF capacitive loads, and SO-8 package compatibility with automated PCB assembly.
Technical Context
The MAX6341CSA implements a temperature-compensated buried-zener core with optional external trimming via the TRIM pin (±24mV range) and wideband noise reduction via the NR pin (supports 1µF capacitor). Its output impedance remains below 1Ω up to 10kHz, enabling fast load-transient response (<8µs settling to ±0.01%).
Line regulation is specified at 10ppm/V over 10V–36V input, and load regulation holds to 7ppm/mA across ±15mA sourcing/sinking. Long-term stability is 30ppm/1000hr, and it exhibits <20ppm hysteresis over temperature cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.82mV - matches 12-bit DAC full-scale and 16-bit ADC LSB scaling. |
| Tempco (max) | 1ppm/°C - ensures ≤0.41ppm drift over 0°C to +70°C operating range. |
| Noise (0.1–10Hz) | 2.4µVp-p - contributes <0.0006 LSB error in 16-bit systems at 4.096V FS. |
| Supply Current | 1.9mA typ - enables low-power portable instrumentation without sacrificing precision. |
| Load Regulation | 7ppm/mA - maintains stability under dynamic load shifts in multiplexed sensor front-ends. |
| Input Range | 8V to 36V - supports direct connection to unregulated industrial 12V/24V rails. |
| Long-Term Stability | 30ppm/1000hr - reduces calibration frequency in metrology-grade equipment. |
Pinout & Package
MAX6341CSA is housed in an 8-pin SO (Small Outline) package, RoHS-compliant, with 1.27mm pitch and standard JEDEC MS-012AC footprint. Pins 1, 7, and 8 are internally connected and must remain unconnected on PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 2) | Positive power-supply input | Accepts 8V–36V; internal regulator supplies zener bias-no external pass transistor needed. |
| GND (Pin 4) | Reference ground return | Low-impedance analog ground path; separate from digital ground to minimize noise coupling. |
| NR (Pin 3) | Noise reduction node | Connects to 1µF capacitor to reduce wideband noise; open-circuit if unused. |
| OUT (Pin 6) | Precision reference output | Delivers regulated 4.096V; stable with 0–100µF capacitive loads and ±15mA I/O. |
| TRIM (Pin 5) | External voltage trim input | Adjusts output ±24mV (±0.59%) via 10kΩ pot; does not degrade tempco or noise performance. |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core | Enables 0.5ppm/°C typical tempco and 2.4µVp-p ultra-low noise-critical for 16-bit+ data converters. |
| Stable with all capacitive loads | Operates reliably from 0µF to 100µF output capacitance-eliminates need for output buffer op-amps. |
| Optional noise reduction | 1µF on NR pin cuts broadband noise by >20dB without affecting DC accuracy or settling time. |
| Trim-adjustable output | ±24mV trim range allows system-level calibration to compensate for PCB trace resistance and DAC offset. |
| Fast transient response | Settles within 8µs to ±0.01% after ±10mA load step-supports high-speed multiplexed sensor sampling. |
Applications
| High-Resolution ADC/DAC Systems | Industrial Process Control |
|---|---|
Use Scenario: 16-bit SAR ADC in programmable logic controller (PLC) analog input module. IC Role / Device Role / Timing Role: Primary voltage reference for ADC conversion reference rail, directly tied to REF+ pin. Use Value: 0.5ppm/°C tempco and 2.4µVp-p noise ensure <0.9 LSB total error over temperature and time-meeting IEC 61000-6-2 immunity requirements. | Use Scenario: Precision 4–20mA transmitter with HART modulation in hazardous-area field instruments. IC Role / Device Role / Timing Role: Stable excitation source for RTD/thermocouple signal conditioning and DAC-based current loop control. Use Value: ±15mA sourcing capability drives 250Ω loop resistor and HART modem simultaneously without droop; 30ppm/1000hr stability extends recalibration intervals to 2 years. |
| Digital Voltmeters (DVM) | ATE Equipment |
Use Scenario: Benchtop 6½-digit DVM requiring sub-ppm measurement repeatability. IC Role / Device Role / Timing Role: Master reference for auto-zeroed integrator and ratiometric scaling of input attenuators. Use Value: 20ppm hysteresis and <1ppm/°C max tempco prevent drift-induced zero errors during multi-range auto-calibration sequences. | Use Scenario: High-channel-count ATE board testing mixed-signal SoCs with 12-bit embedded DACs. IC Role / Device Role / Timing Role: Per-channel reference for DAC linearity verification and gain calibration. Use Value: SO-8 package enables dense layout; 8V–36V input range simplifies power tree design across multiple DUT voltage domains. |
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 output, 3ppm/°C max tempco, 1.6µVp-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; verify buffer adds no phase shift in closed-loop DAC references. |
| ADR444BRZ | 4.096V output, 1.5ppm/°C max tempco, 3.5µVp-p noise, ±10mA output, SO-8 package | Higher noise and weaker sink capability; uses XFET topology instead of buried zener | Choose for lower cost where 3.5µVp-p noise meets system SNR budget; avoid in high-dynamic-range sensor interfaces. |
Compared with MAX6341CSA, REF5040IDR trades ±15mA drive for lower noise but adds complexity with required buffering, while ADR444BRZ offers cost savings at the expense of higher tempco and noise-making MAX6341CSA optimal for industrial ADCs needing robust drive and lab-grade stability in one SO-8 device.
Availability
MAX6341CSA is available at Aetrix Electronics and suitable for high-resolution analog-to-digital converters, industrial process controllers, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6341CSA 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 industrial, automotive, and communications markets, with emphasis on precision, power efficiency, and reliability.
The MAX63xx family targets metrology-grade voltage references, combining buried-zener stability with SO-8 manufacturability for applications demanding laboratory-level accuracy in commercial-grade packages.
FAQ
What is the maximum capacitive load the MAX6341CSA can drive without instability?
The MAX6341CSA is explicitly characterized and guaranteed stable with output capacitive loads from 0µF to 100µF across its full operating temperature range and load current (±15mA). This eliminates the need for external isolation resistors or buffer amplifiers in most applications, including those with large local decoupling or filtering capacitors.
Does the MAX6341CSA require an external trimming resistor to achieve its ±0.02% initial accuracy?
No-the ±0.02% initial accuracy of the MAX6341CSA is achieved without any external components. The TRIM pin is optional and used only for system-level calibration adjustments; leaving it open maintains full datasheet accuracy. External trimming alters output by ±24mV but does not affect the base ±0.02% specification.
Can the MAX6341CSA operate from a 5V supply rail?
No-the MAX6341CSA requires a minimum input voltage of 8V per its Absolute Maximum Ratings and Electrical Characteristics tables. Attempting operation below 8V will result in loss of regulation and undefined output behavior. For 5V-compatible references, consider alternatives like the MAX6126 series.
How does the NR (Noise Reduction) pin function in the MAX6341CSA?
The NR pin on the MAX6341CSA accepts a 1µF capacitor to shunt high-frequency noise from the internal reference core. Adding this capacitor reduces broadband noise by >20dB without degrading DC accuracy, tempco, or turn-on settling time. Leaving NR open disables this feature with no adverse effect on baseline performance.
Is the MAX6341CSA pin-compatible with other members of the MAX63xx family?
Yes-the MAX6341CSA shares identical pinout, package (SO-8), and terminal functions with MAX6325CSA and MAX6350CSA. Only the output voltage differs (2.5V, 4.096V, 5V respectively); all share the same IN, GND, NR, OUT, TRIM pin assignments and electrical behavior for trimming, noise reduction, and load driving.
MAX6341CSA 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:
- ±0.02%
- Temperature Coefficient:
- 1ppm/°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
MAX6341CSA FAQ
1.How can I place an order for MAX6341CSA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6341CSA 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 MAX6341CSA reliable?
The price and inventory of MAX6341CSA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6341CSA is usually 5 days.
3.What payment methods are accepted for MAX6341CSA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6341CSA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6341CSA?
MAX6341CSA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6341CSA 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 MAX6341CSA?
For technical support, including MAX6341CSA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6341CSA requirements.
6.How does Aetrix verify that MAX6341CSA is sourced from the original manufacturer or authorized distributors?
All MAX6341CSA 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 MAX6341CSA meets industry standards.
7.What is the process for return or replacement of MAX6341CSA?
All MAX6341CSA units undergo pre-shipment inspection (PSI). If there is an issue with MAX6341CSA, 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 MAX6341CSA part is unused and in its original packaging.
Return procedure for MAX6341CSA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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