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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:3,158
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Product details
Overview
MAX6341EPA+ from Maxim Integrated is a precision 4.096V voltage reference IC using buried-zener technology, delivering ±0.02% initial accuracy, 0.75ppm/°C typical temperature coefficient (1.5ppm/°C max), and 2.4µVp-p (0.1Hz–10Hz) low-frequency noise. It operates from 8V to 36V input, supplies ±15mA load current, and supports external trimming and noise reduction-ideal for 16-bit ADC/DAC reference circuits in industrial data acquisition.
For engineers reviewing the MAX6341EPA+ datasheet, MAX6341EPA+ pinout, MAX6341EPA+ application, or MAX6341EPA+ equivalent, key selection criteria include output stability over -40°C to +85°C, compatibility with capacitive loads up to 100µF, trim-adjustment range of ±24mV, and guaranteed long-term drift of 30ppm/1000hr.
Technical Context
This device implements a temperature-compensated buried-zener core with internal curvature correction, achieving near-zero thermal hysteresis (7ppm) and flat output vs. temperature response across its full operating range. Its low-output-impedance design (<1Ω at DC, <10Ω up to 100kHz) ensures minimal interaction with downstream converters under dynamic load conditions.
The NR pin enables optional wideband noise filtering via a 1µF capacitor, reducing integrated noise by >50% in the 0.1Hz–10Hz band without affecting settling time or stability. The TRIM pin accepts a resistive divider for ±1% output adjustment while preserving specified tempco and long-term stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096V ±0.02% - Enables exact 12-bit full-scale alignment in 4.096V-referenced SAR ADCs. |
| Tempco (max) | 1.5ppm/°C - Ensures ≤±68ppm (±0.28mV) total drift over -40°C to +85°C ambient. |
| Noise (0.1–10Hz) | 2.4µVp-p - Contributes <0.5 LSB error in 16-bit systems with 4.096V span. |
| Load Regulation | 7ppm/mA - Maintains output stability within ±105ppm (±0.43mV) across full ±15mA sourcing/sinking range. |
| Line Regulation | 10ppm/V - Limits variation to ±270ppm (±1.1mV) over 8V–36V input range. |
| Long-Term Stability | 30ppm/1000hr - Predicts ≤±0.12% cumulative drift after 1 year of continuous operation. |
| Supply Current | 2.9mA typ - Enables low-power operation in battery-backed precision instrumentation. |
Pinout & Package
MAX6341EPA+ is housed in an 8-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole mounting. Pin 1, 7, and 8 are internally connected and must remain unconnected in PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | Internally Connected | Unused; no external connection permitted-floating or tied to GND/IN causes undefined behavior. |
| 2 | IN | Positive supply input (8V–36V); requires local 2.2µF bypass capacitor to GND for ripple rejection. |
| 3 | NR | Noise reduction node; connect 1µF capacitor to GND to reduce wideband output noise by >50%. |
| 4 | GND | Analog ground reference; must be star-connected to minimize ground bounce in mixed-signal systems. |
| 5 | TRIM | External voltage divider tap point; enables ±24mV (±0.58%) output adjustment without degrading tempco. |
| 6 | OUT | Precision reference output; stable with 0–100µF capacitive loads and capable of sourcing/sinking ±15mA. |
Key Features
| Feature | Design Value |
|---|---|
| Buried-zener core | Delivers lowest 1/f noise among precision references in its class-critical for metrology-grade measurements. |
| Trim-adjustable output | Supports system-level calibration without sacrificing initial accuracy or long-term stability specifications. |
| Capacitive-load immunity | Remains stable with any output capacitance from 0µF to 100µF-eliminates need for isolation resistors in filter networks. |
| Turn-on settling time | 8µs to ±0.01% final value-enables fast wake-up in power-gated high-resolution data loggers. |
| Transient response | <500µV overshoot during ±10mA load steps-preserves reference integrity during multiplexed ADC sampling. |
Applications
| High-Resolution Data Acquisition | Digital Voltmeters (DVMs) |
|---|---|
Use Scenario: 16-bit simultaneous-sampling ADC module in portable environmental sensor array requiring stable reference across temperature cycling. IC Role / Device Role / Timing Role: Primary voltage reference source for ADC conversion core, directly setting full-scale range and LSB weight. Use Value: 0.75ppm/°C tempco and 30ppm/1000hr stability ensure measurement repeatability within ±1 LSB over 1-year field deployment. | Use Scenario: Benchtop 6½-digit DVM with auto-ranging and dual-slope integration architecture. IC Role / Device Role / Timing Role: Precision reference for integrator capacitor charging and comparator threshold generation. Use Value: 2.4µVp-p low-frequency noise prevents digitization uncertainty in sub-microvolt resolution modes. |
| Industrial Process Controllers | ATE Reference Subsystem |
Use Scenario: Loop-powered 4–20mA transmitter with HART modulation, operating in harsh factory environments (-40°C to +85°C). IC Role / Device Role / Timing Role: Stable excitation source for RTD/thermocouple signal conditioning and DAC output scaling. Use Value: ±15mA sourcing/sinking capability allows direct drive of op-amp feedback networks without external buffers. | Use Scenario: Modular ATE channel card requiring traceable, low-drift reference for calibration verification and parametric testing. IC Role / Device Role / Timing Role: Master reference for on-board DACs, ADCs, and programmable gain amplifiers in test head electronics. Use Value: Optional NR pin filtering enables <1µV RMS noise floor-meeting MIL-STD-883 Class B noise requirements. |
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, SO-8 package only | Higher tempco limits use in extended temperature industrial designs; lower noise suits ultra-low-drift metrology | Select REF5040IDR only if SO-8 footprint is mandatory and tempco budget allows ≥3ppm/°C drift. |
| ADR444BRZ | 4.096V output, 1.5ppm/°C max tempco, 2.8µVp-p noise, SO-8 package only | Same tempco spec but higher noise; lacks NR pin and external trim capability | Choose ADR444BRZ when board space constraints require SO-8 and noise reduction via NR pin is not required. |
Compared with MAX6341EPA+, REF5040IDR offers lower noise but doubles tempco tolerance and eliminates trim/NR flexibility, while ADR444BRZ matches tempco but sacrifices both noise performance and configurability-making MAX6341EPA+ optimal for thermally demanding, field-deployable systems needing calibration adaptability.
Availability
MAX6341EPA+ is available at Aetrix Electronics and suitable for high-resolution analog-to-digital converters, digital voltmeters, industrial process controllers, and ATE equipment requiring stable component supply across extended temperature ranges.
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 semiconductor solutions for precision, power, and interface applications.
The MAX63xx family was engineered specifically for metrology-grade voltage reference needs in 16-bit+ data conversion systems where low noise, ultra-stable tempco, and long-term reliability are non-negotiable.
FAQ
What is the maximum input voltage rating for MAX6341EPA+?
The absolute maximum input voltage for MAX6341EPA+ is 40V referenced to GND. However, the recommended operating range is 8V to 36V. Exceeding 36V may increase power dissipation beyond safe limits, especially at high ambient temperatures, and could compromise long-term stability. Always use a series resistor or clamp diode if transient overvoltage risk exists in the application.
Does MAX6341EPA+ require an external capacitor on the NR pin?
No, the NR pin on MAX6341EPA+ is optional-leave it open if wideband noise reduction is not needed. When used, a 1µF ceramic capacitor to GND reduces 0.1Hz–10Hz noise by >50%; larger values yield diminishing returns. Do not connect NR to IN or OUT, as this may destabilize the reference core.
Can MAX6341EPA+ drive a 10kΩ load directly?
Yes, MAX6341EPA+ can directly drive a 10kΩ load (409.6µA at 4.096V) with negligible error: its load regulation is specified at 7ppm/mA, so the resulting shift is just 2.9ppm (12µV)-well within the ±0.02% (±0.82mV) initial accuracy. For heavier loads approaching ±15mA, verify PCB trace resistance and thermal rise.
What is the purpose of the TRIM pin on MAX6341EPA+?
The TRIM pin on MAX6341EPA+ allows fine adjustment of the output voltage using an external resistive divider. Connecting a 10kΩ potentiometer between OUT and GND-with its wiper to TRIM-enables ±24mV (±0.58%) output tuning. This adjustment does not degrade the specified 1.5ppm/°C max tempco or 30ppm/1000hr long-term stability.
Is MAX6341EPA+ compatible with ceramic output capacitors?
Yes, MAX6341EPA+ is explicitly characterized for stability with capacitive loads from 0µF to 100µF-including X7R and C0G ceramics. No series isolation resistor is required. Output capacitance improves transient response and reduces high-frequency noise, but avoid placing large capacitors (>10µF) directly at the OUT pin without verifying PCB layout parasitics in high-speed switching environments.
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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