HV7370 Datasheet, PDF (1/7 Pages) Sirectifier Semiconductors – Quad, High Speed, ±100V 850mA, Ultrasound Damper

HV7370
Quad, High Speed, ±100V 850mA, Ultrasound Damper
Features
► HVCMOS^® technology for high performance
► High density integration ultrasound transmitter
► 0 to ±100V open-drain voltage
► ±850mA source and sink current
► Up to 20MHz operation frequency
► Matched delay times
► 1.8 to 5V CMOS logic interface
Applications
► Medical ultrasound imaging
► Piezoelectric transducer drivers
► NDT ultrasound transmission
► Pulse waveform generator
General Description
The Supertex HV7370 is a four-channel, monolithic high
voltage, high-speed damper. It is designed for working with
the HV738, HV748 or HV758 for medical ultrasound waveform
generators requiring fast return-to-zero applications. The
HV7370 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 output stages of each channel are designed to provide
peak output currents of over ±0.85A for damping to ground,
with up to ±100V swing. The control from inputs to outputs uses
direct coupling topology, which not only saves components
and PCB layout space, but also makes the damping frequency
function down to DC.
Block Diagram
+1.8 to 3.3V +9.0V
C1
C2
V_LL
V_DD
OTP
EN
MC0
MC1
PIN1
(+Pulse)
EN_PWR
Level
Trans.
+75V ^{VPP -9.0V} 0 to +75V
C3
C4
C5
V_SUB V_PF
V_PP
SUB
RGND
R_P1
P-Driver
TXP1 _D1
NIN1
(-Pulse)
+1.8 to 3.3V
Logic
EN
G_REF
Level
Trans.
N-Driver
Pulser
Supertex HV748
1 of 4 Channels
V_SS
V_NF
TXN1 ^D2
R_N1
RGND
V_NN
HV_OUT1
C7
C6
V_NN +9.0V 0 to -75V
+1.8 to 3.3V +9.0V
+9.0V -9.0V
C1
C2 C3
C4
V_LL
V_DD
V_SUB V_DP
RGND
X1
SUB
EN_PWR
IN1
(Damp)
Level
Trans.
P-Driver
PD1 _D3
Level
Trans.
N-Driver
ND1 ^D4
Damper
Supertex HV7370
1 of 4 Channels
V_SS
V_DN
RGND
C7
+9.0V