HV758DB1 Supertex, HV758DB1 Datasheet

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HV758DB1

Manufacturer Part Number
HV758DB1
Description
Manufacturer
Supertex
Datasheet
1.HV758DB1.pdf (6 pages)

Specifications of HV758DB1

Lead Free Status / Rohs Status
Not Compliant
Introduction
The HV758 is a monolithic 4-channel, high-speed, high
voltage, ultrasound transmitter pulser. This integrated, high
performance circuit is in a single, 8x8mm, 64-Ball FCBGA
package.
The HV758 can deliver up to a ±2.2A source and sink
current to a capacitive transducer. It is designed for medical
ultrasound imaging and ultrasound NDT applications. It can
also be used as a high voltage driver for other piezoelectric
or capacitive MEMS transducers, or for ATE systems and
pulse signal generators as a signal source.
HV758’s circuitry consists of controller logic circuits, level
translators, gate driving buffers and a high current and
high voltage MOSFET output stage. The output stages of
each channel are designed to provide peak output currents
over ±2.5A for pulsing, when MC0 = 1 and MC1 = 1, with
up to ±90V swings. When in mode 1, all the output stages
drop the peak current to ±580mA for low-voltage CW mode
operation to save power. Two floating 9.0VDC power supplies
referenced to V
FET gate drivers. The upper limit frequency of the pulser
waveform is 20MHz depending on the load capacitance.
One HV758 can also be used as four damping circuits to
generate fast return-to-zero waveforms by working with
another HV758 as four pulsing circuits. It also has built-in,
under-voltage and over-temperature protection functions.
Typical Application Circuit
+1.8 to 3.3V
Logic
PP
and V
NN
PIN1
NIN1
OTP
MC0
MC1
supply the P- and N-type power
EN
Ultrasound Pulser Demoboard
●
C1
1235 Bordeaux Drive, Sunnyvale, CA 94089
+1.8 to 3.3V
GREF
EN_PWR
VLL
Translator
Translator
HV758 ±90V 2.2A
Level
Level
VSS
VDD
+10V
1 of 4 Channels
C2
HV758
C3
SUB
Designing a Pulser with HV758
This demoboard data sheet describes how to use the
HV758DB1 to generate the basic high voltage pulse
waveform as an ultrasound transmitting pulser.
The HV758 circuit uses the DC coupling method in all
level translators. There are no external coupling capacitors
needed. The V
rather quickly, compared to a high voltage capacitor gate-
coupled driving pulser. This direct coupling topology of the
gate drivers not only saves two high voltage capacitors per
channel, but also makes the PCB layout easier.
The input stage of the HV758 has high-speed level translators
that are able to operate with logic signals of 1.2 to 5.0V and
are optimized at 2.5 to 3.3V. In this demoboard, the control
logic signals are connected to a high-speed ribbon cable
connector. The control signal logic-high voltage should be
the same as the V
logic-low should be referenced to GND.
The HV758DB1 output waveforms can be displayed using
an oscilloscope directly by connecting the scope probe to
the test point TX1 to 4 and GND. The soldering jumper can
select whether or not to connect the on-board equivalent-
load, a 330pF, 200V capacitor, parallel with a 2.5kΩ, 1W
resistor. Also, a coaxial cable can be used to connect the
user’s transducer to easily drive and evaluate the HV758
transmitter pulser.
P-Driver
N-Driver
+90V
VSUB
VNF
V
NN
V
+10V
PP
-10V
C7
VPF
●
C4
Tel: 408-222-8888
VNN
0 to +90V
0 to -90V
C6
PP
and V
VPP
CC
R
R
P1
N1
RGND
voltage of the demoboard, and the
C5
NN
TXP1
RGND
TXN1
●
rail voltages can be changed
www.supertex.com
N1
D1
HVOUT1
HV758DB1
X1

HV758DB1 Summary of contents

Page 1

... HV758 ±90V 2.2A Designing a Pulser with HV758 This demoboard data sheet describes how to use the HV758DB1 to generate the basic high voltage pulse waveform as an ultrasound transmitting pulser. The HV758 circuit uses the DC coupling method in all level translators. There are no external coupling capacitors needed ...

Page 2

... +10V 10mA +3.3V 5.0mA for HV758 always at the highest potential of all the SUB - V ) and ( are the two floating power and V are the positive and negative high the V and ● Tel: 408-222-8888 ● www.supertex.com HV758DB1 = +10V 10mA and respect to the ...

Page 3

... HV758DB1 Schematic TP5 TP9 TP10 VCC TP6 NIN1 5 6 PIN1 TP15 7 8 NIN2 PIN2 11 12 NIN3 HEADER 13 14 PIN3 12X2 15 16 NIN4 17 18 PIN4 19 20 OTP TP17 21 22 MC1 23 24 MCO VDD VCC VNF VPF VSUB VSUB D5 D6A D6B D8A D8B ...

Page 4

... SUB +10V and ( +1.8 to 5.0V, normally from control circuit +10V with current limit to 10mA +10V with current limit to 10mA 1235 Bordeaux Drive, Sunnyvale, CA 94089 4 HV758DB1 and user logic circuit +10V NF NN (1) (1) (1) (1) (1) (1) (1) ( only). LL (3) ( with limit to 5.0mA ...

Page 5

... HV758DB1 Waveforms Figure 1: PIN, NIN and output waveform of 5MHz, V +/-90V +95V with load of 330pF//2.5K, at MC0 = MC1 = 1. SUB Figure 2: Input to output propagation delay on rise is 29ns and on fall is 33.7ns and the tr/tf time is 22.9/25.8ns +10V +10V 3.3V +10V +10V +/-90V SUB ● ...

Page 6

... HV758DB1 Waveforms Figure 3: PIN, NIN and OUTPUT at 1.25MHz, V +95V with load of 330pF//2.5KΩ, Load = 330pF//2.49kΩ, Mode 1 through 4 current modes. Figure 4: PIN, NIN and OUTPUT at 2.5MHz, V +95V with load of 330pF//2.5KΩ, Load = 330pF//2.49kΩ, Mode 1 through 4 current modes. ...