CMOS Clock Generators

The Silicon Labs CMOS Clock Generators and I2C programmable clock generators can be customized to generate multiple frequencies. Providing highly flexible factory and I2C programmable LVCMOS clock generators, the devices provide equivalent frequency synthesis capability of up to 8 PLLs, with exact frequency synthesis (0 ppm error), significantly lower jitter, lower power, and a smaller size than competing solutions.  

Factory customization options are available to minimize EMI, including configurable edge rates, output impedance, output skew, and spread spectrum. These flexible devices are perfect for consumer audio/video and embedded applications, consolidating all system clock requirements into a single device. 



Features

  • Up to 12 customizable output frequencies
  • Up to 200 MHz frequency output
  • Low cycle-to-cycle jitter: < 70 ps
  • I2C programmable options (Si5351) or pin-controlled (Si5350 or Si5357)
  • Excellent PSRR: no external components required
  • Center and down Spread spectrum modulation clock generation-0.1 to -2.5% down, ±0.1 to ±1.5% center-0.5 to -2.5% down, ±0.1 to ±1.5% center
  • User-defined control pins
  • Factory programmable OTP
  • Two week sample lead time
  • Compact packages:
    • TDFN, MSOP10, QFN20, QFN32

Product Matrix

Status
Devices
Part Number Customize Data Sheet Dev KIt Description Control Reference Inputs Clock Outputs Input Frequency (MHz) Output Frequency (MHz) Output Format(s) Phase Jitter (RMS) (ps) VDD (V) VDDO (V) Package Type Package Size (mm) Clock Generators Jitter Attenuating Clocks Synchronous Ethernet/1588 PCI Express Clocks 4G/LTE Wireless Clocks Intel x86 Clocks Real Time Clock Xtal Frequency
3-Output clock generator for AMD Radeon Pin 1 3 27 27 27 100 LVCMOS 3.3 TDFN10 3x3 Yes No No No No No No 27 MHz
Customize Si51211-EVB 2-output programmable clock generator Pin 1 2 3 165 3 170 LVCMOS 2.5 - 3.3 TDFN6 1.2x1.4 Yes No No No No No No 8 MHz - 48 MHz
Customize Si51211-EVB 3-output programmable clock generator Pin 1 3 3 165 3 170 LVCMOS 2.5 - 3.3 1.8; 2.5; 3.3 TDFN8 1.4x1.6 Yes No No No No No No 8 MHz - 48 MHz
Customize Si51211-EVB 2-output programmable clock generator Pin 1 2 3 165 3 133 LVCMOS 1.8 TDFN6 1.2x1.4 Yes No No No No No No 8 MHz - 48 MHz
Customize Si51218-EVB 3-output programmable clock generator with RTC Pin 1 3 3 165 0.032 170 LVCMOS 2.5 - 3.3 1.8; 2.5; 3.3 TDFN8 1.4x1.6 Yes No No No No No Yes 8 MHz - 48 MHz
Customize Si535x-B20QFN-EVB Any-frequency, any-output, Xtal reference, 8-output LVCMOS clock generator Pin 1 8 25 27 0.0025 200 LVCMOS 3.5 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN20 4x4 Yes No No No No No No 25 MHz or 27 MHz
Customize Si535x-B20QFN-EVB Any-frequency, any-output, Xtal reference, 3-output LVCMOS clock generator Pin 1 3 25 27 0.0025 200 LVCMOS 3.5 1.8; 2.5; 3.3 1.8; 2.5; 3.3 MSOP10 3x4.9 Yes No No No No No No 25 MHz or 27 MHz
Customize Si535x-B20QFN-EVB Any-frequency, any- output, VCXO reference, 8-output LVCMOS clock generator Pin 1 8 25 27 0.0025 200 LVCMOS 3.5 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN20 4x4 Yes No No No No No No 25 MHz or 27 MHz
Customize Si535x-B20QFN-EVB Any-frequency, any-output, VCXO reference, 3-output LVCMOS clock generator Pin 1 3 25 27 0.0025 200 LVCMOS 3.5 1.8; 2.5; 3.3 1.8; 2.5; 3.3 MSOP10 3x4.9 Yes No No No No No No 25 MHz or 27 MHz
Customize Si535x-B20QFN-EVB I2C programmable, any-frequency, any-output, reference clock input, 8-output LVCMOS clock generator Pin 2 8 10 100 0.0025 200 LVCMOS 3.5 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN20 4x4 Yes No No No No No No 25 MHz or 27 MHz
Customize Si535x-B20QFN-EVB Any-frequency, any-output, reference clock input, 3-output LVCMOS clock generator Pin 2 3 10 100 0.0025 200 LVCMOS 3.5 1.8; 2.5; 3.3 1.8; 2.5; 3.3 MSOP10 3x4.9 Yes No No No No No No 25 MHz or 27 MHz
Customize Si535x-B20QFN-EVB I2C programmable, any-frequency, any-output, Xtal reference, 8-output LVCMOS clock generator I2C 1 8 25 27 0.0025 200 LVCMOS 3.5 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN20 4x4 Yes No No No No No No 25 MHz or 27 MHz
Customize Si535x-B20QFN-EVB I2C program, any-frequency, any-output, Xtal reference, 3-output LVCMOS clock generator I2C 1 3 25 27 0.0025 200 LVCMOS 3.5 1.8; 2.5; 3.3 1.8; 2.5; 3.3 MSOP10 3x4.9 Yes No No No No No No 25 MHz or 27 MHz
Customize Si535x-B20QFN-EVB I2C programmable, any-frequency, any-output, VCXO reference, 8-output LVCMOS clock generator I2C 1 8 25 27 0.0025 200 LVCMOS 3.5 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN20 4x4 Yes No No No No No No 25 MHz or 27 MHz
Customize Si535x-B20QFN-EVB I2C programmable, any-frequency, any-output, reference clock input, 8-output LVCMOS clock generator I2C 2 8 10 100 0.0025 200 LVCMOS 3.5 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN20 4x4 Yes No No No No No No 25 MHz or 27 MHz
Customize Any-frequency, any-output, 8-output, quad-frequency LVCMOS clock generator, max = 200 MHz Pin 1 8 5 200 1 200 LVCMOS 2 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN24 4x4 Yes No No No No No No 25 MHz or 27 MHz
Customize Si5356-EVB I2C programmable, any-frequency, any-output, 8-output, quad-frequency LVCMOS clock gen, max = 200 MHz I2C 1 8 5 200 1 200 LVCMOS 2 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN24 4x4 Yes No No No No No No 25 MHz or 27 MHz
Customize I2C programmable, any-frequency, any-output, 8-output, quad-frequency LVCMOS clock generator, max = 200 MHz I2C 1 8 5 200 1 200 LVCMOS 2 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN24 4x4 Yes No No No No No No 19 MHz - 26 MHz
Customize I2C programmable, any-frequency, any-output, 12-output LVCMOS clock generator I2C/Pin 1 12 10 170 5 170 LVCMOS 0.4 1.8; 2.5; 3.3 1.8; 2.5; 3.3 QFN32 5x5 Yes No No No No No No 16 MHz - 50 MHz
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