ST STHV1600 16路的高压高速超声波发生器解决方案
ST公司的STHV1600是集成了发送波束形成器的16路±100 V, ±2/4 A的高压高速超声波发生器.模拟部分每路提供了电平转换器,抑制噪音二极管,两个相同的高压P沟和两个相同的高压N沟MOSFET,箝位到地的电路,看漏电抗存储区块,热传感器,再循环电流保护和T/R开关架构,峰-峰输出信号0-200V,工作频率高达30MHz,每路功耗150mW,LVDS/CMOS数字输入,主要用在医疗超声图像,脉冲波发生器,NDT超声波发送,压电换能器驱动器.本文介绍了STHV1600主要特性,以及评估板STEVAL-IME014V1B主要指标,电路图和材料清单.
This monolithic, high-voltage, high-speed pulse generator features 16 independentchannels and integrates a 16-channel beamformer for pulse generation in multichannel medical ultrasound applications targeted at low power portable systems.A pure analog section provides each channel with voltage level translators, noiseblocking diode function, two identical high voltage P-channel and two identical highvoltage N-channel MOSFETs as the output stage (the two half bridges are called TX0and TX1), clamping to-ground circuitry, anti-leakage, anti-memory block, thermalsensor, recirculation current protection and a T/R switch structure which guaranteeseffective isolation during the transmission phase.
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