SN74HCT14PWR_PCA9555DWR Other microcontroller, circuit board guide

The company currently has two 300mm fabs named RFAB and DMO56. TI outsources much of its logic and embedded IC production to foundries, but mostly produces analog chips in its own factories.

Among them, 42 150mm fabs and 24 200mm fabs were closed, while the number of closed 300mm fabs accounted for only 10% of the total. The details are shown in the figure below. According to IC Insights statistics, in the past 10 years (2009-2018), all 11-ball semiconductor manufacturers closed or rebuilt a total of 97 fabs. .

SN74HCT14PWR_PCA9555DWR Other microcontrollers, circuit boards

SN74HC244DWR

TPS74801DRCR TPS22918DBVR TLV62569ADRLR TLV62569ADRLT TPS61230ARNST.

So, does this mean that 150mm wafers are gradually withdrawing from the stage of history? The answer is no, there is still a huge market space for 150mm wafers. A large number of 150mm fabs in the industry were closed, and more and more 300mm fabs were launched and gradually achieved mass production.

TPS61230ARNSR TPS613221ADBVR TPS613221ADBVT LM321LVIDBVR TPS562201DDCR.

DAC7311IDCKR TPS62260DDCR TPS62260DDCT TPS62261TDRVRQ1 TCA9544APWR.

SN74HCT14PWR_PCA9555DWR Other microcontrollers, circuit boards

GJM1555C1HR90BB01D

TPS560430XFDBVR XTR117AIDGKR CSD15380F3T MSP-EXP432P401R TPS2051BDBVR.

When asked why nobody in the industry has built something like a BAW resonator, Upton said, "It's very difficult to develop. But it's not easy to convert electrical energy into mechanical acoustics while keeping the signal stable and robust within a clean clock." TI has been involved in MEMS research for many years.

LM5176PWPR LM5176PWPT DRV8876PWPR TPS23751PWPR TPS61194PWPR.

TPS60403DBVR CSD17313Q2 TPS259571DSGR TPS259571DSGT TLV3202AQDGKRQ1.

SN74HCT14PWR_PCA9555DWR Other microcontrollers, circuit boards

The typical basic structure is shown in the figure (a) above, with the piezoelectric layer sandwiched between the upper and lower metal electrodes, the corresponding mBVD equivalent circuit is shown in the figure (b) above, and the corresponding impedance is shown in the figure (c) above. It can be seen that there are two resonance frequencies, series (fs) and parallel (fp). The working principle is as shown below.

There are many types of BAW filters, including ladder type filter, lattice type filter, stacked crystal filter and coupled resonator filter. Only the ladder type and lattice type are briefly introduced here. The BAW filter can connect multiple resonators according to a certain topology.

relevant information