DSC400-3113Q0159KI2

Clock Generators, PLLs, Frequency Synthesizers Overview

The DSC400-3113Q0159KI2T is a configurable four-output, low jitter crystal-less clock generator utilizing PureSilicon MEMS technology. It operates on a supply voltage of 2.25V to 3.6V with a core current of 40mA typical. The device provides ±25 ppm frequency stability and supports output frequencies from 2.3 MHz to 460 MHz for differential formats (LVDS, LVPECL, HCSL) and up to 170 MHz for LVCMOS. It features two independent PLLs driving two banks of outputs, each bank supporting pin-selectable frequency sets via FSB1 and FSB2 inputs. Outputs are individually configurable for LVCMOS, LVDS, LVPECL, or HCSL standards.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Crystal-less operation using integrated MEMS resonator eliminates external quartz components.
• Four format-configurable outputs support LVCMOS, LVDS, LVPECL, and HCSL standards.
• Dual independent PLL architecture allows synchronous generation within banks and independent derivation between banks.
• Pin-selectable frequency tables enable hardware selection between two pre-configured frequency sets per bank.

Clock Generators, PLLs, Frequency Synthesizers Applications

• Ethernet interfaces including 1G, 10GBASE-T/KR/LR/SR, and FCoE
• Storage Area Networks such as SATA, SAS, and Fibre Channel
• Passive Optical Networks including EPON, GPON, and 10G-PON
• Automotive infotainment and embedded industrial systems

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific Q-code assignment for the required frequency configuration against the datasheet Product Identification System. Confirm that the 'I' suffix indicates the extended industrial temperature range (-40°C to +85°C). Ensure the 'T' suffix matches the required tape and reel packaging format rather than tube. Cross-reference the output format codes to ensure CLK0 through CLK3 match the design requirements.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when low phase jitter below 1 ps RMS is critical for high-speed serial links. Choose based on the required output interface types, noting that LVCMOS limits maximum frequency to 170 MHz while differential formats reach 460 MHz. Verify power supply constraints fit the 2.25V to 3.6V range. Consider the 20-pin QFN footprint dimensions of 5.0 mm x 3.2 mm for PCB layout compatibility.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Microchip DSC400 family of PureSilicon MEMS clock generators. Unlike traditional quartz oscillators, it integrates the resonator on-chip, offering superior shock and vibration immunity. The family supports various output configurations and temperature grades, allowing designers to replace multiple discrete oscillator types with a single programmable solution.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements require matching the 20-pin QFN package and MEMS-based crystal-less architecture. Verify if alternative MEMS clock generators from other manufacturers support the same dual-PLL bank structure and identical output format options (LVDS, LVPECL, HCSL, LVCMOS).