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Details, datasheet, quote on part number: HV748
![Ultrasonic Transducer Driver Amplifier Sot89 Ultrasonic Transducer Driver Amplifier Sot89](/uploads/1/2/5/7/125730762/990478456.jpg)
Part | HV748 |
Category | |
Description | Quad High Speed ¡ÿ75v 1.25a Ultrasound Pulser |
Company | Supertex, Inc. |
Datasheet | Download HV748 datasheet |
Quote |
Features, Applications |
Features HVCMOS technology for high performance High density integration ultrasound transmitter to ±75V output voltage ±1.25A source and sink current in Pulse mode ±400mA source and sink current in CW mode to 20MHz operating frequency Matched delay times to 5.0V CMOS logic interface Built-in output drain bleed resistors The Supertex is a four-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 piezoelectric, capacitive or MEMS sensing in ultrasonic nondestructive detection and sonar ranger applications. The HV748 consists of a 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. The output stages of each channel are designed to provide peak output currents over ±1.8A for pulsing, when in mode 4, with to ±75 volt swings. When in mode 1, all the output stages drop the peak current to ±400mA for low-voltage CW mode operation to decrease the 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 eliminates two high voltage capacitors per channel, but also makes the PCB layout easier. ApplicationPortable medical ultrasound imaging Piezoelectric transducer drivers NDT ultrasound transmission Pulse waveform generator Package Options Device HV748 48-Lead QFN 7x7mm body, 1.0mm height (max), 0.5mm pitch HV748K6-GParameter 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 Storage temperature Thermal resistance, JA Thermal resistance, JC (Junction to thermal pad) Value 29°C/W 0.5°C/W L = Lot Number YY = Year Sealed WW = Week Sealed A = Assembler C = Country of Origin = 'Green' Packaging 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. VSUB VLL with logic signal low VDD (VPP -VPF) and (VNF VNN) VPP and VNN Logic control signalsAll logic signals go to low VPP and VNN (VPP -VPF) and (VNF VNN) VDD VLL VSUB Operating Supply Voltages and Current (4 Channel Active) (Operating conditions, unless otherwise specified, VSS = 0V, VLL = +2.5V, VDD = +9.0V, VPP-VPF = +9.0V, VNN-VNF = -9.0V, VPP =+75V, VNN = 25°C) Symbol Parameter VLL VDD VPF VNF VSUB VPP VNN SRMAX ILL IDDQ IDDEN IDDENCW IPPQ IPPEN IPPENCW INNQ INNEN INNENCW IPFQ IPFEN IPFENCW INFQ INFEN INFENCW Logic voltage reference Internal voltage supply Positive gate driver supply Negative gate drive supply IC substrate voltage Positive HV supply Negative HV supply Slew rate limit of VPP, VNN VLL Current EN = Low VDD Current EN = Low VDD Current EN = High VDD Current MODE = 4 VDD Current MODE = 1 VPP Current EN = Low VPP Current MODE = 4 VPP Current MODE = 1 VNN Current EN = Low VNN Current MODE = 4 VNN Current MODE = 1 VPF Current EN = Low VPF Current MODE = 4 VPF Current MODE = 1 VNF Current EN = Low VNF Current MODE = 4 VNF Current MODE = 1 Units Conditions ----Floating driver voltage supplies. Must be the most positive potential of the IC. ----Built-in slew rate detection protection. ----f = 5.0MHz, continuous, no loads = 5.0MHz, continuous, no loads = 5.0MHz, continuous, no loads = 5.0MHz, continuous, no loads = 5.0MHz, continuous, no loads Note: All supply current values are for reference only.Symbol Parameter VPULL_UP Open drain pull-up voltage VUVDD VUVLL VUVVF VOL_OTP IOTP TOTP THYS VDD threshold VLL threshold VPF, VNF threshold OTP flag output low voltage Max. open drain output current Over-temperature threshold OTP output reset hysteresis Min Typ Max Units Conditions mA °C --------VLL = 3.3V, OTP = Active, IPULL_UP = 1.0mA. --If over-temperature occurred, OTP low and all TX outputs will be HiZ. |
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