AD1836AASZRL_AD28MSP02BN Introduction

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

. With the maturity and progress of the process technology and the increase in market demand, more and more companies use advanced processes below 20nm to design and produce ICs and devices, which makes more and more IDMs and foundries eliminate low-efficiency production. fab.

AD1836AASZRL_AD28MSP02BN

ACA1205S7PO

Hyundai Motor Corporation's RANC system significantly reduces noise in the vehicle cabin. The system can analyze all kinds of noise in real time and generate anti-phase sound waves. This new technology can deal with a variety of different road noises, such as the resonance between the tire and the wheel, or the roar from the road surface.

AD1021RQ Memory IC AD1022A1RQ AD1022A1RQ Module AD1022A2RQ AD1022A2RQ Other IC AD1022ARQ AD1022ARQ Module AD10242TZ AD10242TZ Other Passive Components AD1025ARQ.

Taking TWS (true wireless Bluetooth headset) as an example, the active noise reduction function has also become a "just-needed" function for product market competition. "Sophie, Marketing Manager of Industrial and Medical Consumer Products of ADI's China Business Unit, said in a recent interview. "Faced with the increasingly strong demand for active noise reduction for the next generation of TWS headphones, how can upstream manufacturers provide high-performance chips and algorithm solutions to help Importing products to customers and quickly bringing them to the market is the key for TWS earphones to seize market opportunities in the 'second half' competition. .

Active noise reduction ANC is to listen to the background noise, use the chip and algorithm model to calculate the noise sound wave and generate the anti-phase sound wave, and use the sound wave superposition and cancellation principle to achieve the noise reduction effect. . Throughout its development history, in the early 20th century, acoustic experts began to consider starting from the noise itself to achieve the purpose of reducing noise. Earlier in 1933, German physicist Paul Lueg proposed active noise control, that is, active noise reduction. concept, using the principle of destructive interference of sound waves to reduce noise.

AD1836AASZRL_AD28MSP02BN

AD1888JST-TEEL

5962-8980501CA(AD536ASD/883B) 5962-8980801LA 5962-8982503PA 5962-9463601MPA 5962-9756401QXA 5B30 5B30 Module 5B30-01 5B32 Other passive components 5B34-03.

5962-8777101MCA=OP400AY/883B 5962-8856501CA 5962-8856502CA 5962-8859301MPA=OP200AZ/883 5962-8872101PA 5962-8876403XA 5962-8954401PA 5962-8965702LA 5962-8969701XA 5962-8980101CA 。

5B37 5B37-J-03 5B37-K-02 5B41-03 Other passive components 6525ACA 700-TBR24 71006AE2 71008AE1 71010AE0 71021AE1 .

BQ24311DSGR TIC10024QDCPRQ1 TL331IDBVR TL331IDBVT TPS63070RNMT.

AD1836AASZRL_AD28MSP02BN

. The resonator used in the Ladder type (SAW is also mentioned later) includes series and parallel. A series resonator plus a parallel resonator is called a stage, and the entire ladder type filter can be composed of several stages.

The working principle is as shown below. 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).

relevant information