HV746

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 t...

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SeekIC No. : 004367605 Detail

HV746: 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 ...

floor Price/Ceiling Price

Part Number:
HV746
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/3/27

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Product Details

Description



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



Application

·Portable medical ultrasound imaging
·Piezoelectric transducer drivers
·NDT ultrasound equipment
·Pulse waveform generator



Pinout

  Connection Diagram


Specifications

Parameter Value
VSS, Power supply reference 0V
VLL, Positive logic supply -0.5V to +7V
VDD, Positive logic and level translator supply -0.5V to +14V
(VPP -VPF) Positive fl oating gate drive supply -0.5V to +14V
(VNF- VNN) Negative gate fl oating drive supply -0.5V to +14V
(VPP-VNN) Differential high voltage supply +180V
VPP, High voltage positive supply -0.5V to +95V
VNN, High voltage negative supply +0.5V to -95V
All logic input PIN, NIN and EN pin voltages -0.5V to +7.0V
OTP, over temperature protection output -0.5V to +7.0V
(VSUB - VSS) Substrate to VSS voltage difference +180V
(VPP TXPX) VPP to TXPX voltage difference +180V
(VSUB- TXPX) Substrate to TXPX voltage difference +180V
(TXNX-VNN ) TXNX to VNN voltage difference +180V
dVPP/dt, HV positive supply maximum slew rate 25V/s
dVNN/dt, HV negative supply maximum slew rate 25V/s
Storage temperature -65 to 150
Thermal resistance, JA (4-layer,1oz, 4x3in. 9-via PCB) 29/W
Thermal resistance, JC 0.5/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.



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 Pchannel 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 HV746. The P and N type of power FETs gate drivers are supplied by two fl oating 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.




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