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High-voltage integrated transmitting circuit with differential driving for CMUTs

机译:具有差分驱动的高压集成发射电路,用于CmUT

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摘要

In this paper, a high-voltage integrated differential transmitting circuit for capacitive micromachined ultrasonic transducers (CMUTs) used in portable ultrasound scanners is presented. Due to its application, area and power consumption are critical and need to be minimized. The circuitry is designed and implemented in AMS 0.35 μ m high-voltage process. Measurements are performed on the fabricated integrated circuit in order to assess its performance. The transmitting circuit consists of a low-voltage control logic, pulse-triggered level shifters and a differential output stage that generates pulses at differential voltage levels of 60, 80 and 100 V, a frequency up to 5 MHz and a measured driving strength of 2.03 V/ns with the CMUT electrical model connected. The total on-chip area occupied by the transmitting circuit is 0.18 mm2 and the power consumption at the ultrasound scanner operation conditions is 0.936 mW including the load. The integrated circuits measured prove to be consistent and robust to local process variations by measurements.
机译:本文提出了一种用于便携式超声扫描仪的电容式微加工超声换能器(CMUT)的高压集成差分传输电路。由于其应用,面积和功耗至关重要,需要将其最小化。该电路是在AMS 0.35μm高压工艺中设计和实现的。在制造的集成电路上执行测量以评估其性能。发射电路由低压控制逻辑,脉冲触发的电平转换器和差分输出级组成,该差分输出级以60、80和100 V的差分电压电平,高达5 MHz的频率以及测得的驱动强度2.03产生脉冲连接了CMUT电气模型的V / ns。发送电路占用的总片上面积为0.18 mm2,包括负载在内,超声扫描仪工作条件下的功耗为0.936 mW。通过测量证明,所测量的集成电路对于本地工艺变化是一致的并且具有鲁棒性。

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