SI51214-A01AFMR

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI51214-A01AFMR is a factory-programmable two-output clock generator housed in a 6-pin TDFN package. It operates from a single 1.8 V supply and generates CMOS outputs ranging from 3 to 133 MHz. The device accepts an 8–48 MHz crystal or a 3–165 MHz reference clock input. Key electrical specifications include a typical operating current of 5.5 mA, a power-down current of 0.5 mA, and cycle-to-cycle jitter up to 200 ps rms at the same frequency. Programmable spread spectrum modulation supports ±0.25%, ±0.5%, or ±1% center spread.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates up to two CMOS clock outputs with frequencies from 3 to 133 MHz
• Accepts 8–48 MHz crystal or 3–165 MHz external reference clock inputs
• Supports programmable spread spectrum (±0.25%, ±0.5%, ±1%) for EMI reduction
• Features configurable control pins for FSEL, SSONb, PD, and OE functions

Clock Generators, PLLs, Frequency Synthesizers Applications

• Crystal or XO replacement in embedded systems
• EMI reduction in portable devices
• Digital still cameras
• IP phones
• Smart meters

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific five-character option code 'A01AF' against the manufacturer's ordering guide to confirm the exact output frequencies and control pin configurations. Factory programming is unique to each part number; standard family members may have different functional parameters. Confirm the package type matches the required PCB land pattern.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when low power consumption and minimal footprint are critical. Ensure the application requires only two outputs, as the device does not support additional channels. Verify that the required output frequencies fall within the 3–133 MHz range and that the input source matches the supported crystal or reference clock specifications.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the Si51214 product family, which includes variants like the Si51210 and Si51211. These devices share the same 6-pin TDFN package and core architecture but differ in internal configuration and output capabilities. The Si51214 specifically provides two synthesized outputs derived from the internal PLL.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements must match the 6-pin TDFN package and 1.8 V supply requirements. Verify that alternative parts support the same input frequency ranges and output jitter specifications. Cross-model substitution within the Si512xx family requires checking the specific output count and pinout compatibility.