The Chorus™ SiT91211 clock generator is designed for low-power, low-jitter applications. 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.
Device complies with PCIe Gen 1-7 jitter requirements with margin.
| SiTime Corporation | |
|---|---|
| Product Category | IC Clocks |
| Product Number | SiT91211 |
| Product Name | 1 to 700 MHz, Low Jitter (150 fs), ±20 to ±50 ppm MEMS Clock Generator |
| Device Type | Clock Generator |
| Bus Interface | CMOS; LVPECL; LVDS; LVDS, LPHCSL, LVPECL, LVCMOS |
| Package Type | 4x4 mm, 24-pin QFN |
