HV738 /-65V HV738K6-G - Datasheet Archive

 

Summary Sheet HV738 Quad High Speed ±65V 750mA Ultrasound Pulser C2 C1 Applications: Portable medical ultrasound imaging

 

Product Summary Sheet HV738 HV738 Quad High Speed ±65V 750mA Ultrasound Pulser C2 C1 Applications: Portable medical ultrasound imaging Piezoelectric transducer drivers NDT ultrasound transmission Pulse waveform generator +65V VPP - 8V +8V +1.5 to 2.5V VLL C5 C4 VSUB VDD VPF VPP SUB OTP EN MC0 MC1 C3 0 to +65V EN_PWR RGND RP1 Level Translator PIN1 P-Driver TXP1 +1.5 to 2.5V Logic D1 HVOUT1 TXN1 Level Translator NIN1 D2 N-Driver RN1 X1 RGND 1 of 4 Channels GREF VSS HV738 HV738 VNN VNF C7 (with resistor) VNN + 8V C6 0 to -65V Typical Application Circuit 48-Lead QFN (K6) Product Overview: The Supertex HV738 HV738 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 HV738 HV738 consists of a controller logic interface circuit, level translators, MOSFET gate drivers 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 over ±1.1A for pulsing, when in mode 4, with up to ±65 volt swings. When in mode 1, all the output stages drop the peak current to ±140mA 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 8.0VDC power supplies referenced 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. Features: 0 to +/-65V /-65V output voltage Better ultrasound image resolution +/-750mA source and sink output current capability Designed for battery-powered, hand-held ultrasound scanners Up to 20 MHz operating frequency Wider ultrasound probe selections 4-channels in 7x7mm QFN package Small PCB space 4-mode control for PW and CW 050107 Benefits: Save power consumption at CW Doppler mode Supertex inc. HV738 HV738 Quad High Speed ±65V 750mA Ultrasound Pulser Ordering Information / Availability Part Number Package Option Samples Lead Time HV738K6-G HV738K6-G 48-Lead QFN (Green) Now 4-5 Weeks -G indicates the part is RoHS compliant (Green). Product Contact For any questions regarding the HV738 HV738 please contact your local area Supertex sales office, or contact the main office in the US at: Telephone: Fax: EMail: Website: 800-222-9883 408-222-4895 mktg@supertex.com www.supertex.com Supertex inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089