LM50CIM3X Ultra Small Tube_LMR16020PDDAR Other Passive Components Guide

The TI BAW oscillator is an electronic oscillator circuit that utilizes the piezoelectric effect to generate a stable electronic signal through the mechanical resonance of a vibrating miniature acoustic resonator (BAW). This precise high-frequency signal provides a clock and timing reference for electronic systems.

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

LM50CIM3X Subminiature Tube_LMR16020PDDAR Other Passive Components

LQP03TG1N8C02D

TPS22919DCKR CSD23381F4 CSD23280F3 LM76002RNPR LM76002RNPT.

Ray Upton, TI's vice president of connected microcontrollers, explained that new technologies are critical to "moving large amounts of data in a stable manner," improving high-performance communications. .

The basic structure of the BAW filter is that two metal electrodes sandwich a piezoelectric film (the thickness of the Quartz substrate is 2um at 2GHz), and the acoustic wave oscillates in the piezoelectric film to form a standing wave.

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

LM50CIM3X Subminiature Tube_LMR16020PDDAR Other Passive Components

TLV2314IDGKR op amp IC

TPS560430XFDBVR XTR117AIDGKR CSD15380F3T MSP-EXP432P401R TPS2051BDBVR.

When asked why no one in the industry has built something like a BAW resonator, Upton said, "It's very difficult to develop." TI has been involved in MEMS for years. However, converting electrical energy into mechanical acoustics while keeping the signal stable and robust within a clean clock is not easy.

In short, advances in BAW technology have brought "higher performance, simpler design, lower cost and smaller size" to wired and wireless networks, Wong explained.

BQ24311DSGR TIC10024QDCPRQ1 TL331IDBVR TL331IDBVT TPS63070RNMT.

LM50CIM3X Subminiature Tube_LMR16020PDDAR Other Passive Components

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.

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