MAX31091AUA/V+400

Clock Generators, PLLs, Frequency Synthesizers Overview

The MAX31091AUA/V+400 is an automotive-grade clock generator housed in an 8-pin µMAX package. It provides a factory-trimmed center-spread-spectrum output frequency of 0.4 MHz with ±0.25% nominal accuracy at +25°C. The device operates on a 3.0V to 3.6V supply and supports dither magnitudes of 0%, ±1%, ±2%, or ±4% via pin selection. It maintains ±1.75% accuracy across the -40°C to +125°C temperature range, consumes 16 mA typical supply current, and meets AEC-Q100 qualification standards.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Factory-trimmed 0.4 MHz center-spread-spectrum output
• Pin-selectable dither magnitude (0%, ±1%, ±2%, ±4%) and rate
• AEC-Q100 qualified for -40°C to +125°C automotive operation
• ±1.75% frequency accuracy across full temperature and voltage range

Clock Generators, PLLs, Frequency Synthesizers Applications

• Automotive Infotainment systems
• Navigation units
• Advanced Driver Assistance Systems (ADAS)
• Engine Control Unit (ECU) instrumentation

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm the programmed output frequency and packaging format. The 'T' suffix indicates tape-and-reel packaging, while its absence denotes tube packaging. Confirm that the component meets RoHS compliance requirements as indicated by the '+' designation in the part number.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a precise 0.4 MHz clock signal with spread-spectrum capabilities is required for automotive applications. Ensure the design accommodates the 16 mA typical supply current and utilizes decoupling capacitors near the VCC and GND pins. Verify that SEL0, SEL1, and DR pin configurations align with the desired dither parameters.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the MAX31091 EconOscillator family, which offers low-cost, factory-programmable clock generation solutions. The device integrates a master oscillator and triangle-wave generator to produce dithered outputs, serving as a direct replacement for standard crystal oscillators in space-constrained automotive designs requiring EMI reduction.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The datasheet does not list specific cross-reference part numbers. When replacing this component, ensure the substitute matches the 8-pin µMAX footprint, 3.0V–3.6V supply range, and AEC-Q100 automotive qualification status.