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Analog Devices Inc./Maxim Integrated MAX6341EPA
- Part No.:
- MAX6341EPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX6341EPA.pdf
- Description:
- IC VREF SERIES 0.02% 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,648
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Product details
Overview
MAX6341EPA from Maxim Integrated is a precision +4.096V voltage reference IC using buried-zener technology, delivering 0.75ppm/°C max temperature coefficient, ±0.02% initial accuracy, and 1.5µVp-p (0.1Hz–10Hz) output noise. It operates from 8V to 36V input, supplies ±15mA, and targets high-resolution data-conversion systems up to 16 bits.
For engineers reviewing the MAX6341EPA datasheet, MAX6341EPA pinout, MAX6341EPA application, or MAX6341EPA equivalent, key selection criteria include its industrial-grade –40°C to +85°C temperature range, optional external trimming (±24mV), noise-reduction capacitor support, and stability with capacitive loads up to 100µF.
Technical Context
The MAX6341EPA implements a low-power, temperature-compensated buried-zener core achieving near-flat thermal drift without heater power. Its trim input allows ±1% output adjustment via external potentiometer without degrading temperature stability.
Wideband noise reduction is enabled by a dedicated NR pin accepting a 1µF capacitor; output impedance remains low (<1Ω at DC, <10Ω up to 10kHz) ensuring robust transient response during ±10mA load steps with <8µs settling to ±0.01%.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +4.096V nominal; tight 4.095V–4.097V tolerance at +25°C enables direct interface with 12-bit/16-bit ADCs requiring exact full-scale reference. |
| Tempco (max) | 0.75ppm/°C over –40°C to +85°C; ensures ≤3.1ppm total drift across full industrial range-critical for metrology-grade calibration. |
| Initial Accuracy | ±0.02% (±0.82mV); eliminates need for system-level trimming in high-accuracy DAQ and digital voltmeters. |
| Noise (0.1–10Hz) | 1.5µVp-p; contributes <0.0004 LSB noise to a 16-bit 4.096V-range ADC, preserving effective resolution. |
| Load Regulation | ≤7ppm/mA; maintains output stability under dynamic sourcing/sinking up to ±15mA-essential for driving DAC buffers and op-amp references. |
| Line Regulation | 10ppm/V (8–36V input); rejects supply ripple without external regulation, simplifying front-end power design. |
| Long-Term Stability | 30ppm/1000hr; guarantees minimal drift in deployed instrumentation and ATE equipment over extended operation. |
Pinout & Package
MAX6341EPA is housed in an 8-pin plastic DIP package (0.300" wide), compatible with through-hole assembly and socket-based test fixtures. Pin 1, 7, and 8 are internally connected and must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | I.C. | Internally connected; no external connection permitted-leaving floating avoids parasitic coupling or latch-up risk. |
| 2 | IN | Positive supply input (8–36V); accepts unregulated rails and provides internal current limiting for fault protection. |
| 3 | NR | Noise reduction node; adding 1µF capacitor reduces wideband noise-enables sub-µV RMS performance in sensitive measurement paths. |
| 4 | GND | Analog ground reference; requires low-impedance star connection to minimize ground bounce in mixed-signal systems. |
| 5 | TRIM | External voltage adjust input; supports ±24mV trim range via 10kΩ potentiometer-allows fine calibration without altering tempco. |
| 6 | OUT | Precision reference output; capable of sourcing/sinking ±15mA while maintaining regulation-drives multiple ADC references or op-amp gain stages directly. |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core | Delivers ultra-low 1.5µVp-p (0.1–10Hz) noise and 0.75ppm/°C max tempco-superior to bandgap alternatives for metrology applications. |
| Stable with all capacitive loads | Operates reliably with 0–100µF output capacitance-eliminates need for isolation resistors when driving ADC sample-and-hold or filter networks. |
| Optional noise reduction | NR pin accepts 1µF capacitor to suppress high-frequency noise-improves SNR in spectral analysis and precision digitization. |
| External trim capability | TRIM pin enables ±24mV adjustment without affecting temperature stability-supports field calibration and board-level error correction. |
| Excellent transient response | Settles to ±0.01% in ≤8µs after ±10mA load step-maintains reference integrity during fast-switching DAC or multiplexed sensor channel updates. |
Applications
| High-Resolution ADC Reference | Digital Voltmeter Calibration |
|---|---|
Use Scenario: Providing stable reference for 16-bit successive-approximation ADCs in portable multimeters and benchtop DAQ systems. IC Role / Device Role / Timing Role: Primary voltage reference source defining full-scale conversion range and absolute measurement accuracy. Use Value: 0.75ppm/°C tempco and ±0.02% initial accuracy ensure <±1 LSB error across –40°C to +85°C-meeting Class A DVM standards. | Use Scenario: Serving as traceable reference standard in handheld and modular digital voltmeters requiring NIST-traceable calibration. IC Role / Device Role / Timing Role: Precision DC reference for auto-zeroing, offset correction, and gain calibration routines. Use Value: 30ppm/1000hr long-term stability minimizes recalibration frequency; 1.5µVp-p noise prevents resolution loss in µV-range measurements. |
| ATE Equipment Reference | Precision Current Source Setpoint |
Use Scenario: Generating accurate reference voltages for parametric test instruments validating analog ICs and sensors. IC Role / Device Role / Timing Role: Master reference for programmable voltage sources and comparator thresholds in automated test sequencers. Use Value: ±15mA drive capability supports parallel loading across multiple DUT channels; 10ppm/V line regulation rejects switching supply noise. | Use Scenario: Setting precise voltage for op-amp-based current sources delivering calibrated 4–20mA or 0–10mA loop outputs. IC Role / Device Role / Timing Role: Stable setpoint generator referenced to high-accuracy shunt or series sense elements. Use Value: Load regulation ≤7ppm/mA ensures constant current despite varying load impedance; TRIM pin enables end-of-line current trim. |
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, 0.05% initial accuracy, SO-8 package only. | Higher tempco and accuracy tolerance; lacks TRIM/NR pins; optimized for low-power battery-operated systems. | Choose REF5040IDR only if SO-8 footprint is mandatory and ±0.05% accuracy suffices. |
| ADR444BRZ | 4.096V output, 1.5ppm/°C max tempco, 0.04% initial accuracy, SO-8 package; higher 3.5µVp-p noise. | Higher noise and tempco; includes enable pin but no NR/trim; designed for low-noise op-amp biasing rather than metrology. | Select ADR444BRZ when enable control is required and noise budget allows >2× MAX6341EPA's 0.1–10Hz noise floor. |
Compared with REF5040IDR and ADR444BRZ, the MAX6341EPA offers superior temperature stability (0.75ppm/°C vs. ≥1.5ppm/°C), tighter initial accuracy (±0.02% vs. ≥±0.04%), lower noise (1.5µVp-p), and unique TRIM/NR functionality-making it the preferred choice for industrial calibration, ATE, and high-end data acquisition where metrological integrity is non-negotiable.
Availability
MAX6341EPA is available at Aetrix Electronics and suitable for high-resolution analog-to-digital converters, digital voltmeters, and automated test equipment requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6341EPA 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 MAX63xx family delivers laboratory-grade voltage references using buried-zener topology-engineered specifically for metrology, industrial automation, and test instrumentation demanding sub-ppm stability and ultra-low noise.
FAQ
What is the operating temperature range for the MAX6341EPA?
The MAX6341EPA is rated for operation from –40°C to +85°C, as indicated by the "E" suffix in its part number. This industrial temperature grade ensures reliable performance in harsh environments such as factory-floor instrumentation, outdoor monitoring systems, and automotive test rigs-where ambient conditions exceed commercial-grade limits. The MAX6341EPA maintains its specified 0.75ppm/°C max tempco and ±0.02% initial accuracy across this full range.
Does the MAX6341EPA require an external capacitor on the NR pin?
No, the NR pin on the MAX6341EPA is optional: leaving it open yields standard 1.5µVp-p (0.1–10Hz) noise performance. Adding a 1µF capacitor reduces wideband noise further-verified in Maxim's Typical Operating Characteristics-but larger values provide diminishing returns. The MAX6341EPA remains fully functional and stable without any NR capacitor, making it suitable for space-constrained layouts where passive count must be minimized.
Can the MAX6341EPA drive a 10kΩ load directly?
Yes, the MAX6341EPA can directly drive a 10kΩ load at +4.096V, drawing only 0.41mA-well within its ±15mA output capability. Its low output impedance (<1Ω DC, <10Ω up to 10kHz) ensures minimal voltage droop and excellent transient response. Load regulation is specified at ≤7ppm/mA, so even at full ±15mA, output deviation remains under ±0.105mV-far below the 1LSB step of a 16-bit 4.096V ADC (62.5µV).
Is the MAX6341EPA pin-compatible with other devices in the MAX63xx family?
Yes, the MAX6341EPA shares identical pinout and package (8-pin PDIP) with MAX6325EPA and MAX6350EPA. All three variants use the same IN, GND, NR, TRIM, and OUT pin assignments and support identical external circuitry-including optional noise-reduction capacitor and trim potentiometer. This allows hardware reuse across 2.5V, 4.096V, and 5V reference requirements without PCB redesign.
What is the maximum input voltage the MAX6341EPA can tolerate?
The MAX6341EPA supports an input voltage range of 8V to 36V per its Absolute Maximum Ratings, with IN pin stress limit of –0.3V to +40V. Operation above 36V is not characterized and may compromise long-term reliability or initial specifications. For robustness in noisy industrial environments, a 33V TVS diode on the IN rail is recommended-especially when powered from unregulated 24V supplies subject to load-dump transients.
MAX6341EPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- 1.5ppm/°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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX6341EPA FAQ
1.How can I place an order for MAX6341EPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6341EPA 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 MAX6341EPA reliable?
The price and inventory of MAX6341EPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6341EPA is usually 5 days.
3.What payment methods are accepted for MAX6341EPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6341EPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6341EPA?
MAX6341EPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6341EPA 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 MAX6341EPA?
For technical support, including MAX6341EPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6341EPA requirements.
6.How does Aetrix verify that MAX6341EPA is sourced from the original manufacturer or authorized distributors?
All MAX6341EPA 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 MAX6341EPA meets industry standards.
7.What is the process for return or replacement of MAX6341EPA?
All MAX6341EPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX6341EPA, 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 MAX6341EPA part is unused and in its original packaging.
Return procedure for MAX6341EPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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