MAX31091AUA/V+T027

Clock Generators, PLLs, Frequency Synthesizers Overview

The MAX31091AUA/V+T027 is an automotive-grade clock generator housed in an 8-pin µMAX package. It outputs a factory-trimmed 27MHz center-spread-spectrum signal with ±0.25% nominal accuracy at +25°C and ±1.75% across the -40°C to +125°C temperature range. Operating on a 3.0V to 3.6V supply, it draws 16mA typical current. The device features pin-selectable dither magnitudes (0%, ±1%, ±2%, ±4%) and selectable dither rates via SEL0, SEL1, and DR pins.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Automotive qualified (AEC-Q100) for -40°C to +125°C operation
• Factory trimmed 27MHz output with ±0.25% initial accuracy
• Pin-selectable center-dithered spread-spectrum output
• Dither magnitude options: 0%, ±1%, ±2%, or ±4%

Clock Generators, PLLs, Frequency Synthesizers Applications

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

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the 'T' suffix indicates tape-and-reel packaging. Confirm the '027' suffix corresponds to the specific 27MHz frequency option. Ensure the '/V' designation matches the required automotive qualification level. Check the latest datasheet revision for any updates to ordering information.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this part for applications requiring a fixed 27MHz clock with spread-spectrum capabilities to reduce EMI. Verify that the 16mA supply current fits the system power budget. Ensure the 8-pin µMAX package dimensions are compatible with the PCB layout constraints.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the MAX31091 EconOscillator family of low-cost clock generators. The 'AUA' denotes the automotive temperature grade and µMAX package. The '+T027' specifies the lead-free status, tape-and-reel packaging, and the 27MHz factory-programmed output frequency.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The DS1091L series offers similar spread-spectrum functionality but operates within a narrower frequency range (130kHz to 66.6MHz). Verify compatibility if replacing with other members of the MAX31091 family, such as those with different output frequencies like 33.3MHz or 66.6MHz.