SI5351C-B in Skyworks SI5351 Family
The SI5351C-B family from Skyworks Solutions Inc. is a versatile, programmable I2C-configured clock generator designed to replace traditional crystals and crystal oscillators. This specific sub-family utilizes a MultiSynth fractional-N divider architecture to synthesize up to eight unique frequencies simultaneously. It is primarily used in consumer and industrial electronics where cost-effective, high-precision timing across multiple independent clock domains is required, eliminating the need for bulky discrete timing components and reducing PCB space and bill-of-materials complexity.
Variants in This Sub-Family
Comparing specs that differ across variants.
| Part Number | Type | Package | Voltage | Ratio - Input:Output | Temp Range | Stock |
|---|---|---|---|---|---|---|
| SI5351C-B-GM (Skyworks Solutions Inc.) | Clock Generator | VFQFN-20 | 1.71V | 2:8 | -40degC ~ 85degC | 43,264 |
| SI5351C-B-GMR (Skyworks Solutions Inc.) | Clock Generator | VFQFN-20 | 1.71V | 2:8 | -40degC ~ 85degC | 6,336 |
| SI5351C-B-GM1 (Skyworks Solutions Inc.) | Clock Generator, V.. | VFQFN-16 | 2.25V | 2:4 | -40degC ~ 85degC (.. | 702 |
The SI5351C-B variants primarily differ in their package size and the number of available output pins. For example, the GM and GMR variants use 20-VFQFN packages, while the GM1 variant employs a smaller 16-VFQFN footprint. The GMR designation specifically indicates tape and reel packaging for high-volume automated assembly. Some variants may also vary in the presence of specific control pins for VCXO or output enable functions.
