SiTime unveils mobile clock generator with embedded MEMS

SiTime Corporation has introduced Symphonic, its first mobile clock generator featuring its integrated MEMS resonator, the SiT30100. The device is designed to deliver precise and resilient clock signals for 5G and GNSS chipsets, supporting efficient power consumption in mobile and IoT devices, including smartphones, tablets, laptops and asset trackers. According to SiTime, the Symphonic clock generator combines the functions of up to four separate timing devices, which helps simplify system design and reduces circuit board space requirements.

The integrated temperature sensor in the SiT30100 provides accurate data to compensation algorithms, enabling improved frequency stability. This results in improved GPS accuracy and faster lock times, which are critical for maintaining stable performance in challenging environmental conditions. The device operates within a temperature range of -30°C to 90°C and is engineered for dynamic stability and power optimization, helping to mitigate electromagnetic interference.

Symphonic offers four clock outputs, each capable of delivering 76.8 MHz, 38.4 MHz or 19.2 MHz, suitable for baseband, radio frequency and GNSS applications. The integrated MEMS resonator eliminates the need for an external resonator, resulting in a compact, single-chip solution with an area of 2.22 mm². The device also features a high-precision temperature-to-digital converter with a single-wire UART interface, supporting frequency stability as low as plus or minus 0.5 parts per million.