HV7350K6-G Microchip

HV7350 8-Channel High-Speed 60V 1A Ultrasound RTZ Pulser Features General Description HVCMOS Technology for High Performance The HV7350 is an 8-channel monolithic high-voltage high-speed pulse generator with built-in fast return to High-density Integrated Ultrasound Transmitter zero-damping FETs. This high-voltage and high-speed 0V to 60V Output Voltage integrated circuit is designed for portable medical 1A Source and Sink Current in Pulse Mode ultrasound imaging system. 1A Source and Sink Current in Return-to-Zero The HV7350 consists of a controller logic interface (RTZ) Mode circuit, level translators, MOSFET gate drives, and Up to 20 MHz Operating Frequency high-current power P-channel and N-channel Matched Delay Times MOSFETs as the output stage for each channel. Optional Clock Realignment The output peak currents of each channel are 3.3V CMOS Logic Interface and Reference guaranteed to be over 1A with up to 60V pulse +3.3V Low-voltage Supply for V swings as well as Return-to-Zero mode. The gate DD drivers for the output MOSFETs are powered by built-in Built-in Linear Regulators for Floating Gate linear 5V regulators referenced to V and V . This Drivers PP NN direct coupling topology of the gate drivers not only Built-in Output Drain Diodes and Bleed Resistors saves four floating voltage supplies or AC coupling capacitors per channel but also makes the PCB layout Applications smaller and easier. Portable Medical Ultrasound Imaging An input clock pin is available to realign all the logic Piezoelectric Transducer Drivers input control lines to a master clock. Precise logic timing is always essential in any ultrasound systems. Pulse Waveform Generator Package Type 56-lead (8 X 8) QFN (Top view) 56 1 See Table 2-1 for pin information. 2016 Microchip Technology Inc. DS20005627A-page 1HV7350 Typical Application Circuit +3.3V +3.3V +10 to +60V 0.1F 1.0F 1.0F 1.0F 1.0F VLL VDD CPOS CPF VPP 1 of 8 Channels LRP LRP REN GND GND VPF RGND +5.0V OEN P-Driver PIN1 +5.0V 3.3V Logic VPF NIN1 TX1 Logic HV 1 OUT DMP & VNF Level -5.0V Translator PIN8 Rb X1 N-Driver NIN8 RGND -5.0V VNF GND GND CLK RGND LRN LRN GND SUB DAP GND CNEG CNF VNN 1.0F 1.0F 1.0F -10 to -60V DS20005627A-page 2 2016 Microchip Technology Inc.