The Chorus™ SiT91213 clock generator is designed for low-power, low-jitter applications. It has ultra low jitter at 70 fs (typ). This device has a single clock domain and can drive up to eight low-skew single-ended output loads or four low-skew differential loads.
The SiT91211 integrates an internal MEMS resonator as the frequency source for the internal PLL. By integrating a MEMS resonator, the dependency on quartz crystals is eliminated along with quartz related performance, reliability, and design issues like activity dips and matching requirements.
This highly flexible clock has fully configurable output frequency, clock output buffer type (differential and LVCMOS) and individual output enables, through the serial interface. Internal monitor flags and alarm conditions can be configured to be reported through GPIOs. In addition, the SiT91211 has configurable spread-spectrum clocking.
The device is compliant with PCIe Generation 1-6.
"Specs" | "Value" |
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Frequency Stability (ppm) | ±20 ppm (-40°C to 105°C), ±50 ppm (-40°C to 105°C) |
Operating Temperature Range (°C) | -40 to 85, -40 to 105 |
Package Type (mm²) | 4x4 mm, 24-pin QFN |
Number of Outputs | 8 single-ended, 4 differential |
Output Type | LVDS, LPHCSL, LVPECL, LVCMOS |
Output Frequency Range | 1 to 700 MHz (differential), 1 to 220 MHz (LVCMOS) |
Number of PLL/Clock Domains | 1 PLL |
Phase Jitter (rms) | 70 fs (typ.) |
PCIe Support | Gen 1 to Gen 6 |
Voltage Supply (V) | 1.8, 2.5, 3.3 |
Availability | Sampling |
4x4 mm, 24-pin QFN Clock Generator package
Resource Name | Resource Type | Date | Format | Size |
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