SI5351B-B-GMR

Product Overview

The SI5351B-B-GMR from Skyworks Solutions Inc. is a MultiSynth™ clock generator integrated circuit in a 20-VFQFN exposed-pad package. It uses a crystal input and provides LVCMOS outputs through two internal circuits, with a PLL and a maximum frequency of 200MHz. The device operates from a 1.71V to 3.6V supply across a -40°C to 85°C temperature range and is intended for surface-mount assembly.

Key Features

• Type: clock generator with PLL support.
• Input: crystal; output: LVCMOS.
• Number of circuits: 2.
• Frequency - Max: 200MHz.
• Ratio - Input:Output: 1:8.
• Differential - Input:Output: No/No.
• Divider/Multiplier: Yes/No.
• Voltage - Supply: 1.71V ~ 3.6V.
• Operating Temperature: -40°C ~ 85°C.
• Mounting Type: Surface Mount.
• Package / Case: 20-VFQFN Exposed Pad; Supplier Device Package: 20-QFN (4x4).

Applications

• Embedded systems that require local clock generation from a crystal reference.
• Communications hardware needing crystal-derived LVCMOS clock signals.
• Test and measurement boards using PLL-based clock generation with LVCMOS outputs.
• Surface-mount control boards requiring two clock circuits with a 1:8 input-to-output ratio.

Design & Procurement Notes

When selecting this clock generator, verify that the crystal input and LVCMOS output levels match the system timing architecture and downstream logic. The 1:8 ratio and two-circuit configuration should be evaluated against the required clock plan. Because the input and output are non-differential, signal integrity should be managed for single-ended clock distribution. The 1.71V to 3.6V supply range and -40°C to 85°C temperature range define the operating envelope for layout, decoupling, and environmental selection. The 20-QFN exposed-pad package requires surface-mount thermal and soldering considerations.