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HV7370 Datasheet Preview

HV7370 Datasheet

Ultrasound Damper

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HV7370 pdf
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
VLL
C2
VDD
OTP
EN
MC0
MC1
PIN1
(+Pulse)
EN_PWR
Level
Trans.
+75V VPP -9.0V 0 to +75V
C3 C4 C5
VSUB VPF
VPP
SUB
RGND
RP1
P-Driver
TXP1
D1
NIN1
(-Pulse)
+1.8 to 3.3V
Logic
EN
GREF
Level
Trans.
N-Driver
Pulser
Supertex HV748
1 of 4 Channels
VSS
VNF
TXN1 D2
RN1
RGND
VNN
HVOUT1
C7 C6
VNN +9.0V 0 to -75V
+1.8 to 3.3V +9.0V
C1 C2
VLL VDD
+9.0V -9.0V
C3 C4
VSUB VDP
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
VSS VDN RGND
C7
+9.0V
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Supertex
Supertex

HV7370 Datasheet Preview

HV7370 Datasheet

Ultrasound Damper

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HV7370 pdf
Ordering Information
Package Option
Device
32-Lead QFN
5.00x5.00mm body
1.00mm height (max)
0.50mm pitch
HV7370
HV7370K6-G
-G indicates package is RoHS compliant (‘Green’)
HV7370
Absolute Maximum Ratings
Parameter
Value
VSS, power supply reference
VLL, positive logic supply
VDD, positive logic, level translator supply
(RGND - VDP), P-Gate driver supply
(VDN - RGND), N-Gate driver supply
RGND, RTZ-Ground voltage
0V
-0.5V to +7.0V
-0.5V to +13V
+0.5V to -13V
-0.5V to +13V
-2.0V to +2.0V
All logic input PINX, NINX and EN voltages
VSUB substrate voltage
-0.5V to +7.0V
+120V
(NDX - RGND) damping N-MOSFET
BVSUB voltage
(PDX - RGND) damping P-MOSFET
BVSUB voltage
+120V
-120V
Maximum junction temperature
+150°C
Storage temperature
-65°C to 150°C
Thermal resistance, θJA
21.6°C/W
Absolute Maximum Ratings are those values beyond which damage to the
device may occur. Functional operation under these conditions is not implied.
Continuous operation of the device at the absolute rating level may affect device
reliability. All voltages are referenced to device ground.
Pin Configuration
32
1
32-Lead QFN (K6)
(top view)
Package Marking
L = Lot Number
HV7370
LLLLLL
YYWW
AAACCC
YY = Year Sealed
WW = Week Sealed
A = Assembler ID
C = Country of Origin
= “Green” Packaging
32-Lead QFN (K6)
Power-Up Sequence of Pulser & Damper
Step
Description
1 VSUB
2 VLL with logic signal low
3 VDD, VDN, and VDP
4 (VPP- VPF) and (VNF- VNN)
5 VPP and VNN
6 Logic control signals
Power-Down Sequence of Pulser & Damper
Step
Description
1 All logic control signals go to low
2 VPP and VNN
3 (VPP- VPF) and (VNF- VNN)
4 VDD, VDN, and VDP
5 VLL
6 VSUB
2
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Part Number HV7370
Description Ultrasound Damper
Maker Supertex
Total Page 7 Pages
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