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HV732 Datasheet(PDF) 1 Page - Supertex, Inc

Part # HV732
Description  High Speed 짹100V 2A Integrated Ultrasound Pulser
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Manufacturer  SUTEX [Supertex, Inc]
Direct Link  http://www.supertex.com
Logo SUTEX - Supertex, Inc

HV732 Datasheet(HTML) 1 Page - Supertex, Inc

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Supertex inc.
Supertex inc.
· 1235 Bordeaux Drive, Sunnyvale, CA 94089 · Tel: (408) 222-8888 · FAX: (408) 222-4895 · www.supertex.com
1
NR040506
HV732
Initial Release
High Speed ±100V 2A
Integrated Ultrasound Pulser
Features
HVCMOS technology for high performance
0 to ±100V output voltage
±2A source and sink current
Built-in damping for RTZ waveform capability
Gate-clamp for quick output amplitude ramping
Up to 40MHz operation frequency
±3ns matched delay times
Second harmonic is less than -40dB
1.8V to 3.3V CMOS logic interface
7x7 thermally-enhanced 44-lead QFN MCM
Application
Medical ultrasound imaging
General Description
The Supertex HV732 is a single, complete, high-voltage,
high-speed, ultrasound transmitter pulser. It is designed for
medical ultrasound imaging applications.
The HV732 has built-in damping for faster RTZ waveform
capability and high voltage MOSFET gate-clamping function
for quick ramping of the output voltage amplitude.
The HV732 consists of a control logic circuit, level translators,
MOSFET gate drive buffers, clamp circuits, and high current,
high voltage MOSFETs as the ultrasound transmitter pulser
output stage.
In the output stage there are two pairs of MOSFETs. Each
pair consists of a P-channel and an N-channel MOSFET.
They are designed to have the same impedance, and can
provide peak currents of over ±2 amps. The built-in MOSFET
gate driver outputs swing 0 to 12V on P
DR and NDR pins. The
P-channel damp output swings 0 to –5V on the DMPO pin.
Typical Application Circuit
Level
Trans.
DAMP
Level
Trans.
+12V
Level
Trans.
+12V
V
SUB
Substrate, PAD1
+5 to 12V
V
DD
AGND
V
LL
V
LN
CLAMP
EN
GND
+1.8 to 3.3V
-5V
on/off
Clamp
Circuit
N
IN
AV
DD
Bias
P
IN
P
DR
TX
N
V
NN
TX
P
V
PP
OUT
N
OUT
P
RGND
P
DMPI
N
DR
DMPO
N
GATE
P
GATE
10nF
0 to +100V
0 to -100V
HVOUT
PAD
3
PAD
2
0V
RGND
N
10nF
10nF
Buffer
Buffer


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