HV7350 Datasheet, PDF (1/16 Pages) Supertex, Inc – Eight-Channel, High Speed, ±60V, ±1.0A, Ultrasound RTZ Pulser

HV7350
8-Channel High-Speed ±60V ±1A Ultrasound RTZ Pulser
Features
• HVCMOS^® Technology for High Performance
• High-density Integrated Ultrasound Transmitter
• 0V to ±60V Output Voltage
• ±1A Source and Sink Current in Pulse Mode
• ±1A Source and Sink Current in Return-to-Zero
(RTZ) Mode
• Up to 20 MHz Operating Frequency
• Matched Delay Times
• Optional Clock Realignment
• 3.3V CMOS Logic Interface and Reference
• +3.3V Low-voltage Supply for V_DD
• Built-in Linear Regulators for Floating Gate
Drivers
• Built-in Output Drain Diodes and Bleed Resistors
Applications
• Portable Medical Ultrasound Imaging
• Piezoelectric Transducer Drivers
• Pulse Waveform Generator
General Description
The HV7350 is an 8-channel monolithic high-voltage
high-speed pulse generator with built-in fast return to
zero-damping FETs. This high-voltage and high-speed
integrated circuit is designed for portable medical
ultrasound imaging system.
The HV7350 consists of a controller logic interface
circuit, level translators, MOSFET gate drives, and
high-current power P-channel and N-channel
MOSFETs as the output stage for each channel.
The output peak currents of each channel are
guaranteed to be over ±1A with up to ±60V pulse
swings as well as Return-to-Zero mode. The gate
drivers for the output MOSFETs are powered by built-in
linear 5V regulators referenced to V_PP and V_NN. This
direct coupling topology of the gate drivers not only
saves four floating voltage supplies or AC coupling
capacitors per channel but also makes the PCB layout
smaller and easier.
An input clock pin is available to realign all the logic
input control lines to a master clock. Precise logic
timing is always essential in any ultrasound systems.
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 1