Microchip HV7355 Bruksanvisning

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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

Produktspecifikationer