Low Jitter, 10-output MEMS Clock Generator
The Cascade™ SiT95141 is a single-chip MEMS clock generator optimized for the highest level of clock tree integration. This clock-system-on-a-chip (ClkSoC) consolidates multiple clock ICs and oscillators into a single device. Its low noise quad-PLL architecture and programmable output drivers provide up to 10 differential or 20 LVCMOS low-jitter clock outputs. It supports 4 additional clock inputs with Frac-N dividers, enabling virtually any input-to-output frequency translation configurations from 8 kHz to 2.1 GHz.
This clock generator integrates SiTime’s third-generation MEMS resonator. This integrated MEMS approach eliminates the traditional clock dependency on crystal reference and quartz related issues, and improves system robustness:
- Always accurate clock synthesis by eliminating crystal capacitive mismatch
- Always reliable startup even at cold temperature and in other harsh environmental conditions
- No jitter degradation because of noise coupling onto a crystal interface
- No activity dips/frequency jumps inherent with quartz
- 10倍的抗振动和弯曲
The SiT95141 is supported by TimeMaster™ software that simplifies clock tree design. The device can also be shipped with a user-specified, factory pre-programmed default startup configuration. The device configuration can be re-programmed twice using two banks of one-time-programmable (OTP) memory during manufacturing or configured in-system via I2C/SPI for additional BOM flexibility.The SiT95141 is also supported with theSiT6503EBevaluation board.
View related products:11 outputs
| Number of Inputs | 4 |
| Number of Outputs | 10 |
| Input Frequency Range | 8 kHz to 2.1 GHz (differential), 8 kHz to 250 MHz (LVCMOS) |
| Output Frequency Range | 8 kHz to 2.1 GHz (differential), 8 kHz to 250 MHz (LVCMOS), 1 PPS (one output only) |
| Output Type | LVPECL, CML, HCSL, LVDS, LVCMO |
| Number of PLL/Clock Domains | 4 PLL, 1 time domain |
| Operating Temperature Range (°C) | -40 to +85 |
| Phase Jitter (rms) | 120 fs |
| Voltage Supply (V) | 1.8, 2.5, 3.3 |
| Operating Mode | Free running, synchronized |
| Package Type (mm²) | 9x9 mm, 64-pin |
| Features | Redundant clock inputs with manual switching, DCO mode via I2C or SPI, 5 ppt resolution, programable output delay control |
| Availability | Sampling |
Single-chip clock generator consolidates MEMS resonator, multiple clock ICs and oscillators into a single 9 x 9 mm 64-pin device
Clock-system-on-a-chip with integrated MEMS, simplifies designs
- No crystal capacity matching issues, always accurate frequency synthesis
- No noise coupling onto crystal circuits, guaranteed jitter
- Resistant to vibration and board bending, anywhere PCB placement
Flexible features for the highest level of clock consolidation
- 10 outputs, 4 independent PLLs, up to 2.1 GHz output frequency for maximum frequency agility
- Individually configurable output types and voltage to support a wide range of processors and SOCs
- Optional 4 inputs to enable flexible input-output frequency translation
- In-system programmability via I2C or SPI for further SKU reduction
35% space saving, ideal for high density designs
- 9 x 9 mm package, no external XTAL/oscillator required
Semiconductor level quality and reliability, eliminates quartz-related issues associated with traditional clocks
- Clock tree consolidation replacing crystal oscillators (XOs) and buffers
- Low jitter clock frequency translation and generation
- 10G/100G/400G Ethernet clocking
- Optical transport network (OTN) clocking for framers, mappers, and processors
- FPGA, processor, and memory clocking
- Storage, servers and datacenters
- Test and measurement
- Broadcast video
| Document Name | Type |
|---|---|
| Manufacturing Notes for SiTime Products | Other Quality Documents |
SiT6503 Eval Board User Manual for Cascade SiT9514x devices– Configure and evaluate device performance
Cascade SiT9514x EVB Software User Manual– Get GUI installation, operation, configuration details
级联SiT9514x 1.30.4 GUI软件版本– Download software .exe file
Cascade SiT9514x GUI Release Notes- Get details on the latest version
| Resource Name | Type |
|---|---|
| Timing Solutions for Communications & Enterprise | Brochures/Fliers |
| SiT6503EB Evaluation Board User Manual | User Manuals |
| 5G New Radio (NR) – RRU, AAU, Massive MIMO | Application Briefs |
| Fronthaul and IP RAN Switches | Application Briefs |
| Microwave Outdoor Units (ODU) | Application Briefs |
| Open RAN (ORAN) – Macro and Small Cells | Application Briefs |
| Cascade SiT9514x Clock-System-on-Chip Family | Product Briefs |
| SiTime MEMS Timing Solutions for 5G RRU | Videos |
| SiTime MEMS Timing Solutions for Open RAN | Videos |
| Cascade MEMS Clocks FAQs | FAQs |
| AN20003-SiT9514x-Power-Supply-Noise-Rejection | Application Notes |
| AN20011-SiT9514x-Dynamic-Control-of-Outputs | Application Notes |
| Cascade Platform – MEMS Clock-System-on-a-Chip Family | Presentations |
| SiTime MEMS First 工艺 | Technology Papers |
| 级联SiT9514x 1.30.4 GUI软件版本 | Software |
| Cascade SiT9514x EVB Software User Manual | User Manuals |