MAX9491ETP080+

Clock Generators, PLLs, Frequency Synthesizers Overview

The MAX9491ETP080+ is a factory-programmable, single PLL clock generator from Analog Devices/Maxim Integrated. It generates LVCMOS output frequencies between 4MHz and 200MHz using an integrated fractional-N PLL. The device includes a voltage-controlled crystal oscillator (VCXO) with a ±200ppm tuning range, driven by a DC voltage input. It operates on a 3.3V supply within the -40°C to +85°C temperature range. The OTP ROM is preset at the factory based on customer requests. Key electrical parameters include a digital power supply of 3.0V to 3.6V, total current of 10mA at 45MHz, and RMS jitter less than 13ps at 197MHz.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Factory-programmable fractional-N PLL generating 4MHz to 200MHz LVCMOS outputs
• Integrated VCXO with ±200ppm tuning range via DC voltage input
• Low RMS jitter performance (< 13ps at 197MHz)
• Operates on 3.3V supply with extended temperature range (-40°C to +85°C)

Clock Generators, PLLs, Frequency Synthesizers Applications

• Telecommunications systems
• Data networking equipment
• Home entertainment centers
• Small office/home office (SOHO) devices

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory-preset frequency for the ETP080 suffix directly with the manufacturer or authorized distributors, as the OTP content is custom. Confirm package availability in the 20-pin TQFN format. Ensure compliance with RoHS3 standards during procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a fixed-frequency clock source with VCXO tuning capability is required. Ensure the application supports the 3.3V logic levels and that the PCB layout allows for proper bypassing near VDD and VDDA pins to maintain signal integrity.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the MAX9491 family of multipurpose clock generators. It shares features with variants like the MAX9491ETP010+, differing primarily in the factory-programmed PLL output frequency stored in the one-time programmable memory.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct pin-compatible replacements within the same family include other MAX9491 variants such as MAX9491ETP010+. Verify that the replacement's factory-set frequency matches the system requirements before substitution.