← 返回 JSSC 论文列表JSSC 2020第7期RF & Wireless0.18μm
A 64-Channel Transmit Beamformer With -30-V Bipolar High-Voltage Pulsers for Cat
一款用于导管超声探头的64通道高压脉冲发射器芯片，支持±30V双极性脉冲输出。
0.18μm BCD工艺, ±30V输出, 5ns时序分辨率, 9MHz驱动频率, 180Ω导通电阻
超声发射器高压脉冲发生器CMUT阵列导管超声BCD工艺
▸采用背靠背隔离高压开关拓扑结构
▸高压浮栅驱动器仅需单个高压MOS晶体管
▸复用RZ开关作为发射/接收(T/R)开关以节省面积
Abstract
This article presents a fully integrated
64-channel programmable ultrasound transmit beamformer for
catheter-based ultrasound probes, designed to interface with
a capacitive micro-machined ultrasound transducer (CMUT)
array. The chip is equipped with programmable high-voltage
(HV) pulsers that can generate ±30-V return-to-zero (RZ) and
non-RZ pulses. The pulsers employ a compact back-to-back
isolating HV switch topology that employs HV floating-gate
drivers with only one HV MOS transistor each. F