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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:1,641
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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, 0.75ppm/°C typical temperature coefficient (1.5ppm/°C max), and 2.4µVp-p (0.1Hz–10Hz) low-frequency noise. It supports ±15mA output sourcing/sinking and operates from 8V to 36V input, targeting high-resolution ADC/DAC biasing in test equipment and industrial control systems.
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, guaranteed load regulation up to ±15mA, optional external trimming (±24mV), noise-reduction capacitor support, and SO-8 package compatibility with automated assembly.
Technical Context
The MAX6341CSA+ employs a buried-zener core with on-chip temperature compensation to achieve ultra-low drift-its 1.5ppm/°C max tempco is specified across 0°C to +70°C for the 'C' grade. Output stability is maintained under varying line (8V–36V), load (±15mA), and capacitive conditions (0–100µF), with no external compensation required.
Its TRIM pin enables ±1% output adjustment via external potentiometer without degrading temperature performance, while the NR pin accepts a 1µF capacitor to reduce wideband noise. Turn-on settling time to ±0.01% is 8µs at +25°C, supporting fast system calibration cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.02% - matches 12-bit DAC full-scale and 16-bit ADC LSB scaling |
| Tempco (max) | 1.5ppm/°C - ensures ≤65ppm drift over 0°C to +70°C operating range |
| Noise (0.1–10Hz) | 2.4µVp-p - contributes <0.6 LSB error in 16-bit 4.096V systems |
| Load Regulation | 7ppm/mA - maintains stability with dynamic current draws up to ±15mA |
| Line Regulation | 10ppm/V - rejects supply ripple across full 8–36V input range |
| Long-Term Stability | 30ppm/1000hr - supports calibration-critical applications requiring multi-year accuracy |
| Supply Current | 2.9mA typ - enables low-power operation in battery-backed instrumentation |
Pinout & Package
MAX6341CSA+ is housed in an 8-pin SO (Small Outline) package compliant with JEDEC MS-012, with 1.27mm pitch and gull-wing leads suitable for reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | I.C. | Internally connected; not user-accessible - must remain unconnected |
| 2 | IN | Positive power input (8–36V); requires local bypass capacitor for noise rejection |
| 3 | NR | Noise reduction node - accepts 1µF capacitor to lower wideband output noise |
| 4 | GND | Analog ground reference - must be low-impedance, star-connected to minimize noise coupling |
| 5 | TRIM | External voltage adjust input - enables ±24mV trim range without affecting tempco |
| 6 | OUT | Precision 4.096V reference output - stable with 0–100µF capacitive loads |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core | Delivers lowest intrinsic noise and highest long-term stability vs. bandgap references |
| Optional noise reduction | 1µF capacitor on NR pin reduces wideband noise without compromising transient response |
| External trim capability | TRIM pin supports ±1% adjustment (±24mV) using 10kΩ potentiometer, preserving tempco |
| Capacitive-load immunity | Stable with 0–100µF output capacitance - eliminates need for isolation resistors in filtering networks |
| Fast turn-on settling | 8µs to ±0.01% final value - enables rapid power-up calibration in ATE and portable instruments |
Applications
| High-Resolution Data Converters | Digital Voltmeters |
|---|---|
Use Scenario: 16-bit SAR ADC in portable multimeter requiring sub-LSB reference stability over temperature and time. IC Role / Device Role / Timing Role: Primary voltage reference providing 4.096V full-scale reference for ADC conversion. Use Value: 1.5ppm/°C max tempco and 30ppm/1000hr stability ensure measurement repeatability without frequent recalibration. | Use Scenario: Benchtop DVM with auto-ranging and 5½-digit resolution needing low-noise, high-accuracy reference. IC Role / Device Role / Timing Role: Precision reference source for internal DAC-based null detection and ratio-metric scaling. Use Value: 2.4µVp-p (0.1–10Hz) noise ensures <0.1ppm RMS noise floor, critical for stable digitized readings. |
| ATE Equipment | Precision Current Sources |
Use Scenario: Automated test system generating programmable analog stimulus with 14-bit DAC and real-time calibration. IC Role / Device Role / Timing Role: Reference for DAC output stage and self-test reference during power-up verification. Use Value: ±15mA sourcing/sinking capability allows direct drive of DAC reference inputs and calibration shunt paths. | Use Scenario: 4–20mA transmitter with HART modulation requiring stable current setpoint independent of loop voltage. IC Role / Device Role / Timing Role: Reference voltage for op-amp-based Howland current source topology. Use Value: Load regulation of 7ppm/mA ensures current accuracy remains unaffected by varying sensor loading or cable impedance. |
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, 3.8µVp-p noise, SO-8, 3.3–18V supply | Higher noise and drift; requires lower input voltage - unsuitable for 24V industrial rails | Select when supply is limited to ≤18V and cost sensitivity outweighs ultra-low drift requirements |
| ADR444BRZ | 4.096V, 1.5ppm/°C max tempco, 1.75µVp-p noise, SO-8, 7–18V supply | Narrower input range (7–18V) and no TRIM/NR pins - lacks field-adjustability and noise optimization | Select when lowest possible noise is prioritized and input voltage is constrained to ≤18V |
Compared with REF5040IDR and ADR444BRZ, the MAX6341CSA+ uniquely combines 4.096V output, 1.5ppm/°C max tempco, 8–36V wide-input operation, TRIM/NR flexibility, and ±15mA drive - making it optimal for industrial ATE and 24V-powered precision analog systems where adaptability and robustness are critical.
Availability
MAX6341CSA+ is available at Aetrix Electronics and suitable for high-resolution data converters, digital voltmeters, ATE equipment, precision current sources, and industrial process control systems requiring stable component supply across extended temperature and voltage ranges.
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, mixed-signal, and power-management ICs for industrial, automotive, communications, and computing applications.
The MAX63xx family was developed specifically for metrology-grade voltage references - emphasizing ultra-low drift, low noise, and robustness in calibration-critical instrumentation and high-bit-count data acquisition systems.
FAQ
What is the maximum input voltage rating for MAX6341CSA+?
The MAX6341CSA+ has an absolute maximum input voltage rating of 40V on the IN pin, but its operational input voltage range is specified from 8V to 36V. Operation outside this 8–36V range may cause degraded performance or failure. The device's internal regulation and thermal design are optimized for reliable function within this window, and sustained use above 36V violates the recommended operating conditions defined in the official datasheet.
Does MAX6341CSA+ require an external capacitor on the NR pin?
No, the NR pin on MAX6341CSA+ is optional - it can be left open if wideband noise reduction is not required. When used, a 1µF capacitor to ground provides measurable noise improvement; larger values yield diminishing returns. The device remains fully functional and stable without any NR capacitor, maintaining its specified 2.4µVp-p (0.1–10Hz) noise floor and all other electrical characteristics.
Can MAX6341CSA+ drive a 10kΩ load directly?
Yes, MAX6341CSA+ can directly drive a 10kΩ load - at 4.096V output, this draws only 0.41mA, well within its ±15mA sourcing/sinking capability. Its low output impedance (<1Ω at DC, <10Ω up to 10kHz) ensures minimal voltage droop, and its guaranteed load regulation of 7ppm/mA means the output shift would be just 2.9ppm (≈12nV), far below 16-bit LSB (63µV). No buffer amplifier is needed for such loads.
What is the purpose of the TRIM pin on MAX6341CSA+?
The TRIM pin on MAX6341CSA+ enables precise external adjustment of the output voltage over a ±24mV range (±0.59%) using a 10kΩ potentiometer between OUT and GND, with the wiper connected to TRIM. This adjustment does not degrade the device's 1.5ppm/°C max temperature coefficient or long-term stability, allowing field calibration or system-level gain trimming without sacrificing reference-grade performance.
Is MAX6341CSA+ compatible with lead-free reflow soldering processes?
Yes, MAX6341CSA+ is rated for lead-free reflow soldering per JEDEC J-STD-020. Its SO-8 package supports peak reflow temperatures up to 260°C for 20–40 seconds, consistent with standard Pb-free profiles. The device's internal structure and passivation are qualified for moisture sensitivity level (MSL) 1, eliminating bake requirements prior to assembly - enabling drop-in use in modern RoHS-compliant manufacturing lines.
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:
- 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:
- 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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