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HV7331 Datasheet, PDF (1/9 Pages) Supertex, Inc – Four Channel, High Speed ±70V 2.0A Ultrasound RTZ Pulser | |||
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Supertex inc.
HV7331
Four Channel, High Speed ±70V 2.0A
Ultrasound RTZ Pulser
Features
âºâº HVCMOS technology for high performance
âºâº High density integrated ultrasound transmitter
âºâº 0 to ±70V output voltage
âºâº ±2.0A source and sink minimum pulse current
âºâº Up to 20MHz operation frequency
âºâº ±2.5ns matched delay times
âºâº 2.5 to 5.0V CMOS logic interface
âºâº Built-in output drain diode and bleed resistors
âºâº CW/RTZ Doppler quick switching
âºâº Two damping mode options
Applications
âºâº Portable medical ultrasound imaging
âºâº Piezoelectric transducer drivers
âºâº NDT ultrasound transmission
âºâº Pulse waveform generator
General Description
The Supertex HV7331 is a four-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 devices, and can
also be used for NDT applications.
The HV7331 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 peak output currents of each channel are guaranteed to be
over 2.0A with up to a ±70V pulse swing. The integrated regulators
for the gate drivers not only saves two floating voltage supplies, but
also makes the PCB layout easier. The split common source for
the P or N damping MOSFETs provide pulse or CW Doppler mode
quick switch-over for cost and power savings.
Typical Application Circuit
+2.5 to 3.3V +5.0V
+5.0 to +70V
EN
LR
CW/RTZ
PIN1
NIN1
AGND
Doc.# DSFP-HV7331
B011513
VLL
VDD
CPF VPP
VPP
LRP
VPP
VPF
VSS
RGND
Logic
& Level
Translator
VPF
1 of 4-Channels Shown
VNF
VNN
RGND
VGN
VNN
RGN
RGP
SUB
VGP
VNF
DGND VSS
VSUB
VDD
LRN
CNF
VNN
-5.0V
-5.0 to -70V
VGP
VGN
RGND
HVOUT
TX1
CGP
RGP
CGN
RGN
+VCW
-VCW
CW/RTZ
Supertex inc.
www.supertex.com
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