Figure 1-1 shows the structure of the the BAW resonator technology. The structure includes a thin layer of piezoelectric film sandwiched between metal films and other layers that confine the mechanical energy. The BAW utilizes this piezoelectric transduction to generate a vibration.
Building automation systems maximize safety, robustness and reliability at a scalable level. To obtain better performance in applications such as IP camera, Video surveillance, and HVAC, a complex and reliable network of accurate clock data is required.
In advanced building automation systems such as the ones listed above, the following performance metrics are required:
In Building automation systems, the BAW oscillator can be used as a reference clock for the following devices:
|Audio||12.288 MHz/24.576 MHz|
|100M Ethernet||25 MHz|
|MCU||16 MHz/25 MHz|
|Image Sensor||37.125 MHz/54 MHz|
|SoC system clock||48 MHz/50 MHz|
|WIFI/BLE||38.4 MHz/48 MHz|
|Gb Ethernet||125 MHz|
For all of the frequencies listed above, jitter performance, reliability, and stability are key performance factors. All of these metrics can be met with the BAW oscillator solution.
Figure 1-6 shows the typical block diagrams for IP-Camera and HVAC systems. For IP-Camera applications, the BAW oscillator can be used as a reference clock for the ASIC, MCU, Image Sensor, Audio Codec, HDMI/SDI, and Ethernet PHYs. For HVAC systems, the BAW oscillator can be used as a reference to the WIFI/BLE, MCU, FPGA, and Ethernet PHYs.
|LMK6C/D/P/H||Ultra-low jitter XO||Reference clock for ASIC, MCU, Image Sensor, Audio Codec, HDMI/SDI, and Ethernet PHYs||1 MHz to 400 MHz, ± 25 ppm, 200 fs jitter|
|LMK1Cxxxx||1:x LVCMOS buffer||Fan out to clock MCU, PHYs, and HDMI/SDI||1.8 V - 3.3V supply, ultra-low additive jitter of 20 fs|
|TPL5010||Nanotimer||Ultra-Low Power System Timer with Power Gating Functionality||1.8 V to 5.5 V supply, 35 nA typical current consumption|