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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Multi-Channel Signal-Generator ASIC for Acoustic Holograms
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Multi-Channel Signal-Generator ASIC for Acoustic Holograms

机译：用于声全息图的多通道信号发生器ASIC

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摘要

A complementary metal-oxide-semiconductor (CMOS) application-specific integrated circuit (ASIC) has been developed to generate arbitrary, dynamic phase patterns for acoustic hologram applications. An experimental prototype has been fabricated to demonstrate phase shaping. It comprises a cascadable array of identical, independently controlled signal generators implemented in a 0.35-minimum-feature-size process. It can individually control the phase of a square wave on each of the nine output pads. The footprint of the integrated circuit is. A 128-MHz clock frequency is used to produce outputs at 8 MHz with a phase resolution of 16 levels (4 bits) per channel. A air-coupled matrix array ultrasonic transducer was built and driven by four ASICs, with the help of commercial buffer amplifiers, for the application demonstration. Acoustic pressure mapping and particle manipulation were performed. In addition, a array piezoelectric micromachined ultrasonic transducer (PMUT) was connected and driven by four output channels of a single ASIC, demonstrating the flexibility of the ASIC to work with different transducers and the potential for direct integration of CMOS and PMUTs.
机译：已经开发出互补金属氧化物半导体（CMOS）专用集成电路（ASIC）以生成用于声学全息图应用程序的任意动态相位图案。已经制造了实验原型来演示相整形。它包括以0.35最小特征尺寸的过程实现的相同，独立控制的信号发生器的级联阵列。它可以分别控制九个输出焊盘上每一个的方波相位。集成电路的占地面积是。 128 MHz时钟频率用于产生8 MHz的输出，每个通道的相位分辨率为16级（4位）。构建了一个空气耦合矩阵阵列超声换能器，并在商用缓冲放大器的帮助下由四个ASIC驱动，以进行应用演示。进行声压测绘和颗粒处理。此外，阵列压电微加工超声换能器（PMUT）由单个ASIC的四个输出通道连接并驱动，这表明ASIC可以与不同的换能器一起工作的灵活性以及直接集成CMOS和PMUT的潜力。

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