900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






Supertex

HV746 Datasheet Preview

HV746 Datasheet

Ultrasound Pulser

No Preview Available !

Supertex inc.
HV746
Dual, High Speed,
±75V, 2.5A Ultrasound Pulser
Features
HVCMOS technology for high performance
High density integration ultrasound transmitter
0 to ±75V output voltage
±2.5A source and sink current in PW mode
±800mA source and sink current in CW mode
Up to 20MHz operation frequency
Matched delay times
1.2V to 5.0V CMOS logic interface
Over temperature sensing
Under voltage protections
Built-in output drain bleed resistors
Applications
Portable medical ultrasound imaging
Piezoelectric transducer drivers
NDT ultrasound equipment
Pulse waveform generator
General Description
The Supertex HV746 is a dual-channel monolithic high voltage high-
speed pulse generator. It is designed for portable medical ultrasound
applications. This high voltage and high-speed integrated circuit can
also be used for other piezoelectric, capacitive or MEMS sensor in
ultrasonic nondestructive detection and sonar ranger applications.
The HV746 consists of 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. A 2-
bit mode control is provided that allows the maximum output current
to be reduced for power saving.
The output stages of each channel are designed to provide peak
output currents over ±3.6A for pulsing, when in mode 4, with up to
±75V swings. When in mode 1, all the output stages drop the peak
current to ±800mA for low-voltage CW mode operation to save power
consumption of the IC. The P and N type of power FETs gate drivers
are supplied by two floating 9.0VDC power supplies reference to VPP
and VNN. This direct coupling topology of the gate drivers not only
saves two high voltage capacitors per channel, but also makes the
PCB layout easier.
Typical Application Circuit
+1.8 to 3.3V +9.0V
C1 C2
VLL VDD
+1.8 to 3.3V
Logic
OTP
EN
MC0
MC1
PIN1
EN_PWR
Level
Translator
NIN1
Level
Translator
+75V VPP -9.0V
C3 C4
0 to +75V
C5
VSUB VPF
VPP
SUB
RGND
P-Driver
N-Driver
RP1
RN1
TXP1 D1
HVOUT1
TXN1 D2
X1
GREF
1 of 2 Channels
VSS HV746 VNF
VNN
C7 C6
VNN +9.0V
0 to -75V
RGND
Supertex inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com




Supertex

HV746 Datasheet Preview

HV746 Datasheet

Ultrasound Pulser

No Preview Available !

HV746
Ordering Information
Package Option
Device
48-Lead QFN
7.00x7.00mm body
1.00mm height (max)
0.50mm pitch
HV746
HV746K6-G
-G indicates package is RoHS compliant (‘Green’)
Absolute Maximum Ratings
Parameter
VSS, Power supply reference
VLL, Positive logic supply
VDD, Positive logic and level translator supply
(VPP -VPF) Positive floating gate drive supply
(VNF- VNN) Negative gate floating drive supply
(VPP-VNN) Differential high voltage supply
VPP, High voltage positive supply
VNN, High voltage negative supply
OTP, Over Temperature Protection output
All logic input PINX, NINX and EN voltages
(VSUB - VSS) Substrate to VSS voltage difference
(VPP –TXPX) VPP to TXPX voltage difference
(VSUB- TXPX) Substrate to TXPX voltage difference
(TXNX-VNN ) TXNX to VNN voltage difference
Operating temperature
Value
0V
-0.5V to +7.0V
-0.5V to +14V
-0.5V to +14V
-0.5V to +14V
+170V
-0.5V to +85V
+0.5V to –85V
-0.5V to +7.0V
-0.5V to +7.0V
+170V
+170V
+170V
+170V
-40°C to 125°C
Pin Configuration
48
1
48-Lead QFN (K6)
(top view)
Package Marking
HV746K6
LLLLLLLLL
YYWW
AAA CCC
L = Lot Number
YY = Year Sealed
WW = Week Sealed
A = Assembler ID
C = Country of Origin
= “Green” Packaging
Package may or may not include the following marks: Si or
48-Lead QFN (K6)
Storage temperature
-65°C to 150°C
Thermal resistance, θJA
29°C/W
Thermal resistance, θJC (junction to thermal pad)
0.5°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.
Power-Up Sequence
Power-Down Sequence
Step
Description
Step
Description
1 VSUB
2 VLL with logic signal low
3 VDD
4 (VPP –VPF) and (VNF–VNN)
5 VPP and VNN
6 Logic control signals go to hi
1 Logic control signals go to low
2 VPP and VNN
3 (VPP –VPF) and (VNF–VNN)
4 VDD
5 VLL
6 VSUB
Supertex inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com
2


Part Number HV746
Description Ultrasound Pulser
Maker Supertex
Total Page 8 Pages
PDF Download

HV746 Datasheet PDF

View PDF for Mobile








Similar Datasheet

1 HV746 Ultrasound Pulser
Supertex
2 HV748 Ultrasound Pulser
Supertex





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy