MAX9491ETP095+T

Clock Generators, PLLs, Frequency Synthesizers Overview

The MAX9491ETP095+T 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 built-in VCXO with a ±200ppm tuning range for frequency adjustment. It operates on a 3.3V supply within the -40°C to +85°C temperature range. The ETP suffix indicates a 20-pin TQFN package with an exposed pad.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• One-time programmable fractional-N PLL for custom frequency generation
• Integrated VCXO with ±200ppm tuning range via DC voltage input
• Low RMS jitter (< 13ps at 197MHz) for high-speed applications
• Supports crystal or external reference clock inputs (5MHz-50MHz)

Clock Generators, PLLs, Frequency Synthesizers Applications

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

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific OTP frequency configuration required by the application before ordering, as the internal ROM is programmed at the factory. Confirm that the 20-pin TQFN package aligns with the PCB footprint design. Ensure the design supports the 3.3V power supply requirements and thermal dissipation needs of the exposed pad.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a fixed, low-jitter clock signal in the 4MHz to 200MHz range is needed without external programming logic. The integrated VCXO makes it suitable for applications requiring fine frequency adjustments. Compare against other MAX9491 variants if different packages like TSSOP are preferred.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the MAX9491 family of multipurpose clock generators. The 'ETP' designation specifically identifies the 20-lead Thin Quad Flatpack No-Lead (TQFN) package variant. Other variants include the 14-lead TSSOP version. The device is designed to replace discrete oscillator solutions in space-constrained designs.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct pin-compatible replacements within the same family include the MAX9491EUD (14-pin TSSOP), though the package differs. For functional equivalents with different packaging, verify PLL architecture and jitter specifications carefully.