SI53325-B-GM

Clock Buffers, Drivers Overview

The SI53325-B-GM is a low-jitter LVPECL fanout clock buffer from the Si5332x family, manufactured by Skyworks Solutions. It features two banks with two inputs and five outputs, supporting any-format inputs including LVPECL, LVDS, CML, HCSL, and LVCMOS. The device operates over a wide frequency range from DC to 1250 MHz with an additive jitter of typically 50 fs rms. It includes built-in LDOs for high PSRR performance and supports independent output enable control. The component is housed in a 32-QFN package measuring 5 x 5 mm.

Clock Buffers, Drivers Feature Summary

• Ultra-low additive jitter: 50 fs rms typical
• Wide frequency range: DC to 1250 MHz
• Any-format input support (LVPECL, LVDS, CML, HCSL, LVCMOS)
• Built-in LDOs for high power supply noise rejection

Clock Buffers, Drivers Applications

• Clock distribution networks
• Redundant clocking systems
• High-speed data acquisition systems

Clock Buffers, Drivers Procurement Notes

Verify the specific ordering suffix and package variant against the manufacturer's current datasheet before procurement. Confirm that the application environment remains within the specified operating temperature range of -40°C to +85°C. Ensure proper decoupling capacitors are placed close to the VDD pins to maintain signal integrity and meet the recommended bypass specifications outlined in the functional description.

Clock Buffers, Drivers Selection Notes

Select this component when a dual-bank configuration with five LVPECL outputs is required. It is suitable for applications needing to switch between two input clock sources using the CLK_SEL pin. Consider the 32-QFN package dimensions for PCB layout constraints. Verify that the input signal slew rate meets the minimum requirements to ensure optimal jitter performance.

Clock Buffers, Drivers Part Context

This part belongs to the Si53320-28 family of LVPECL fanout buffers. It shares core architectural features with siblings like the Si53321 and Si53327 but differs in bank count and output configuration. The family is designed for end-to-end clock tree performance when paired with Si534x clocks or Si5xx oscillators.

Clock Buffers, Drivers Replacement Considerations

Si53325-B-GQ offers the same electrical characteristics in a 32-eLQFP package.