Használati útmutató Microchip HV7355

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2018 Microchip Technology Inc.DS20005896A-page 1
HV7355
Features
•High-Density Integrated Ultrasound Transmitter
•0V to +150V Output Voltage
•±1.5A Minimum Source and Sink Current
•±300 mA Current in CW Mode
•Up to 18 MHz Operating Frequency
•Matched Delay Times
•Built-in Gate Driver Floating Voltage Regulator
•2.5V to 3.3V CMOS Logic Interface
Applications
•Portable Medical Ultrasound Imaging
•Piezoelectric Transducer Drivers
•Non-Destructive Testing
•Pulse Waveform Generator
General Description
The HV7355 is an 8-channel unipolar high-voltage
high-speed pulse generator. It is designed for medical
ultrasound applications. This high-voltage and
high-speed integrated circuit can also be used for other
piezoelectric, capacitive or MEMS sensors in ultrasonic
non-destructive detection and sonar ranger
applications.
The HV7355 consists of a controller logic interface
circuit, level translators, MOSFET gate drivers and
high-current P-channel and N-channel MOSFETs as
the output stage for each channel.
The output stages of each channel are designed to
provide peak output currents of ±1.5A for pulsing, when
MC = 1, with up to 150V swings. When MC = 0, all the
output stages drop the peak current to ±500 mA for
low-voltage CW mode operation to save power. This
direct coupling topology of the gate driver not only
saves one high-voltage capacitor per channel but also
makes the PCB layout easier.
Package Type
56-lead (8 X 8) VQFN
(Top view)
See Table 2-1 for pin information.
1
56
8-Channel High-Speed Unipolar 1.5A 150V Ultrasound Pulser

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Termékspecifikációk

Márka: Microchip
Kategória: nincs kategorizálva
Modell: HV7355

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