ISL6439AIBZ-T_1217AS-H-100M=P3 Introduction

Every electronic system must have a heartbeat—a clock signal that helps every component run in perfect synchronization. For decades, designers have used quartz crystals to generate this electronic heartbeat.

From a regional perspective, Japan closed the largest number of fabs. It is reported that Renesas expects to close two more 150mm fabs in 2020 or 2021. Take Renesas as an example. The company's two recently closed fabs are both 150mm, including a fab in Kochi Prefecture, Japan, which produces analog, logic devices and some obsolete micro components. In addition, Renesas has adjusted its factory in Otsu, Shiga Prefecture, Japan, to manufacture optoelectronic devices.

ISL6439AIBZ-T_1217AS-H-100M=P3

TPS62135RGXR

"Quartz crystals require additional components to extend their accuracy -- over time -- as their performance changes beyond controllable temperature changes," he added. In addition, Solis said, "using a BAW resonator is more efficient than using a quartz crystal. precise.

In this case, BAW resonator technology offers TI a huge advantage by eliminating the need for external components mounted on the PCB. Today, timing often requires a quartz crystal. "Everyone uses quartz crystals for clocks," Solis said.

In order to gain an in-depth understanding of TI's new breakthrough in BAW technology, let's start with the principle of BAW filter: . For the first time in the industry, TI uses this technology for integrated clock functions. • In the past, BAW resonator technology has been used to filter signals in communication technologies such as smartphones.

TPS563209DDCR TPS563209DDCT TS3USB221RSER LM339APWR MAX3232IPWR.

ISL6439AIBZ-T_1217AS-H-100M=P3

1269AS-H-2R2M=P2

TPS54310PWPR TPA3116D2DADR LM3429MHX/NOPB DP83867CRRGZT TPS62172DSGR.

TPS63060DSCR TPS63030DSKR TPS63060DSCT TPS63070RNMR TPS630701RNMR.

TPS60403DBVR CSD17313Q2 TPS259571DSGR TPS259571DSGT TLV3202AQDGKRQ1.

LM5176PWPR LM5176PWPT DRV8876PWPR TPS23751PWPR TPS61194PWPR.

ISL6439AIBZ-T_1217AS-H-100M=P3

There are also different structures where sound waves propagate as transverse waves. In the above-mentioned BAW-SMR and FBAR?filter diagrams, sound waves propagate in the form of longitudinal waves, that is, the direction of particle vibration and the direction of wave propagation are parallel.

The Membrane type is similar to the basic model of the BAW resonator, with air on both sides. Since the acoustic impedance of the air is much lower than that of the piezoelectric layer, most of the acoustic waves will be reflected back.

relevant information