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Home Products Integrated Circuits (ICs)Specialized ICs~~MAX6346-44W~~

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MAX6346-44W - LUMILEDS

Name: LUMILEDS MAX6346-44W
Brand: LUMILEDS
SKU: MAX6346-44W
Availability: InStock
Rating: 5 (4 reviews)

Manufacturer Part Number: MAX6346-44W

Manufacturer: LUMILEDS

Allelco Part Number: 32D-MAX6346-44W

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 11,650 pcs available, New & Original

Parts Description: DAC91001

Data sheet: -

Category: Integrated Circuits (ICs) > Specialized ICs

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In stock: 11650

Specifications

MAX6346-44W Tech Specifications
LUMILEDS - MAX6346-44W technical specifications, attributes, parameters and parts with similar specifications to LUMILEDS - MAX6346-44W

Product Attribute	Attribute Value
Part Number	MAX6346-44W
Package	DAC91001
Description	DAC91001
Stock Condition	Get 11650 pcs available quantity at Allelco
Payment	PayPal / TT / Credit Card / Western Union
Allelco Certifications	ESD / ISO 9001 / ISO 13485 / ISO 28000

Product Attribute	Attribute Value
Manufacturer	LUMILEDS
RoHs Status	-
Warranty	100% Perfect Functions
Transport port	Hong Kong
Shipping by	DHL / FedEx / UPS / TNT / SF Express
RFQ Email	info@allelco.com

Frequently Asked Questions(FAQ)

How does the MAX6346-44W voltage reference perform under varying load conditions compared to typical 5V regulators, and what design considerations apply when integrating it into a precision analog circuit?: The MAX6346-44W is a low-noise, high-precision shunt voltage reference with a nominal output of 4.096V, designed for applications requiring stable references rather than power delivery. Unlike linear regulators that scale output based on input voltage, this device operates as a two-terminal Zener-like element where current flow determines output stability. Its load regulation specification—typically specified in µV/mA or ppm/mA—must be evaluated against the total system current draw. For instance, if the reference supplies 1mA to an ADC input stage, any deviation beyond ±10ppm could introduce measurable offset error in a 24-bit system. Therefore, designers should ensure sufficient headroom between supply voltage and reference voltage while accounting for temperature drift and long-term stability, especially when used in battery-powered or thermally constrained environments.

What are the thermal implications of using the MAX6346-44W in compact SOT323 packaging, and how does its power dissipation limit affect circuit layout decisions?: Operating the MAX6346-44W in a SOT323 package imposes strict constraints on power dissipation due to limited thermal conduction. With a maximum junction-to-ambient thermal resistance (θJA) around 220°C/W in still air, even modest voltage drops across the device can lead to significant self-heating. For example, if the input is 5V and the reference draws 2mA continuously, power dissipation is approximately (5V - 4.096V) × 2mA = 1.8 mW. While small, repeated use across multiple channels or higher currents may accumulate thermal effects. Designers must avoid placing the component near heat sources, minimize trace lengths to reduce parasitic resistance, and consider copper pours for improved heat spreading—though absolute performance limits should drive current selection well below maximum ratings.

Can the MAX6346-44W be safely used as a replacement for a bandgap-based voltage reference in high-impedance sensor interfaces, and what trade-offs arise from its shunt architecture?: Yes, the MAX6346-44W can serve as a stable reference in high-impedance sensor circuits, but only if the interface circuitry maintains consistent loading. Unlike series references that present fixed impedance, the MAX6346-44W behaves as a controlled shunt element requiring a minimum operating current (typically 100µA) for proper regulation. In sensor applications such as Wheatstone bridge readout or photodiode transimpedance amplifiers, the reference must be buffered or driven through a low-impedance source to prevent droop due to input bias current mismatches. This adds complexity but enables lower noise operation compared to some integrated bandgap alternatives. However, the need for continuous current flow increases quiescent power consumption, which may be prohibitive in ultra-low-power designs unless duty cycling is implemented.

How does the MAX6346-44W compare to the MAX6346-33W in terms of output voltage accuracy and temperature coefficient, particularly for precision data acquisition systems?: Both variants belong to the same family but differ in nominal output voltage: 4.096V versus 3.072V. The MAX6346-44W typically exhibits a tighter initial accuracy (±0.1%) and lower temperature coefficient (<5ppm/°C over -40°C to +85°C), making it preferable for systems where 4.096V aligns with ADC full-scale ranges (e.g., 2.048V references scaled by gain). The 3.072V version trades slight margin for potential savings in certain topologies, but both share similar noise and long-term stability characteristics. Selection hinges not just on voltage matching but also on whether the application requires dual-supply symmetry or single-ended referencing. In precision DAQ systems, the 4.096V option often reduces gain error when interfacing with bipolar ADCs, whereas the 3.3V variant might simplify biasing in unipolar configurations.

What precautions should be taken when driving the MAX6346-44W with capacitive loads, and does its internal architecture require series resistance for stability?: Although the MAX6346-44W is inherently stable under most conditions, adding large decoupling capacitors (e.g., >1µF) directly at the output can induce transient oscillations due to interaction between the device’s internal impedance and external capacitance. This is less critical than with LDOs but still warrants caution. A small series resistor (typically 10–100Ω) between the reference and the capacitor helps dampen resonant modes without significantly affecting DC performance. Additionally, PCB layout plays a key role: short traces, minimal inductance, and avoidance of long stubs reduce risk. For dynamic applications involving fast settling or frequent power cycling, empirical testing with actual load profiles is recommended to verify transient response integrity.

Is it feasible to operate the MAX6346-44W outside its specified input voltage range, and what risks emerge if the supply exceeds 5.5V?: No, exceeding the 5.5V maximum input rating risks permanent damage due to excessive reverse voltage or breakdown mechanisms within the shunt structure. Even brief excursions above this threshold may degrade long-term reliability or cause parametric shifts. If higher supply voltages are unavoidable, external clamping diodes or resistive dividers can reduce stress, though they compromise efficiency and introduce additional noise sources. Alternatively, selecting a reference with a higher breakdown voltage (e.g., 10V-rated variants) offers more flexibility. Designers should prioritize adherence to absolute maximum ratings to avoid latent failures during field deployment or environmental stress testing.

How does the MAX6346-44W contribute to noise reduction in mixed-signal systems, and what role does its low spectral density play in ADC performance?: The MAX6346-44W delivers exceptionally low broadband noise, often specified below 10µVpp over 10Hz to 10kHz. This characteristic minimizes quantization error in high-resolution ADCs by ensuring clean reference rails free from random fluctuations. In a 24-bit system, even microvolt-level noise can manifest as spurious code transitions during conversion windows. By providing a quiet reference, the MAX6346-44W enhances effective resolution and improves signal-to-noise ratio (SNR) without requiring post-processing filtering. When paired with careful grounding and shielding practices, it enables reliable operation in industrial environments subject to EMI—though simultaneous switching noise from digital sections must still be managed via partitioning and decoupling strategies.

What are the long-term drift characteristics of the MAX6346-44W, and how do they impact calibration intervals in datalogging applications?: Over time, the MAX6346-44W exhibits very low initial drift, typically <5ppm/year, which translates to less than 0.02mV change in output voltage annually at room temperature. This makes it suitable for unattended monitoring systems where periodic recalibration is impractical. For example, in a temperature-controlled lab environment, a system using this reference may maintain better than 0.01% accuracy for several years without intervention. However, extreme temperatures accelerate drift slightly, so worst-case projections should include a safety margin. Applications demanding sub-ppm stability over decades may require ovenized references, but for most industrial or scientific instrumentation, the MAX6346-44W provides sufficient longevity with minimal maintenance overhead.

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Customer Reviews

Evaluation: 10 Articles

Nikh***ech

Aug 13, 2026

Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.
Embe***dMotion

Aug 5, 2026

Purchased this DSP controller for a motor control application. Stable processing performance and very good response under varying loads.
FPGA***dio

Jul 30, 2026

This FPGA handled our logic design without any surprises. Configuration completed quickly and timing met the project requirements.
Nord***mbedded

Jul 20, 2026

Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.
Arch***ct

Jul 15, 2026

Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.
FPGA***lorer88

Jul 7, 2026

The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.
Nath***oleman

Jun 29, 2026

Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.
Emil***rperTech

Jun 23, 2026

Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.
Liam***terTech

Jun 15, 2026

Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.
Nath***rooks

Jun 11, 2026

Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

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Common Countries Logistic Time Reference
Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	Japan	4
Middle East	Israel	6

DHL & FedEx Shipment Charges Reference
Shipment charges(KG)	Reference DHL(USD$)
0.00kg-1.00kg	USD$30.00 - USD$60.00
1.00kg-2.00kg	USD$40.00 - USD$80.00
2.00kg-3.00kg	USD$50.00 - USD$100.00

Note:: The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

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ISO 9001: 2015
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MAX6346-44W

LUMILEDS
32D-MAX6346-44W

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Please refer to the English Version as our Official Version.Return

MAX6346-44W - LUMILEDS

Specifications

Frequently Asked Questions(FAQ)

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

Purchased this DSP controller for a motor control application. Stable processing performance and very good response under varying loads.

This FPGA handled our logic design without any surprises. Configuration completed quickly and timing met the project requirements.

Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.

Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.