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HV732 Datasheet(PDF) 1 Page - Supertex, Inc |
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HV732 Datasheet(HTML) 1 Page - Supertex, Inc |
1 / 10 page Supertex inc. Supertex inc. · 1235 Bordeaux Drive, Sunnyvale, CA 94089 · Tel: (408) 222-8888 · FAX: (408) 222-4895 · www.supertex.com 1 NR040506 HV732 Initial Release High Speed ±100V 2A Integrated Ultrasound Pulser Features HVCMOS technology for high performance 0 to ±100V output voltage ±2A source and sink current Built-in damping for RTZ waveform capability Gate-clamp for quick output amplitude ramping Up to 40MHz operation frequency ±3ns matched delay times Second harmonic is less than -40dB 1.8V to 3.3V CMOS logic interface 7x7 thermally-enhanced 44-lead QFN MCM Application Medical ultrasound imaging ► ► ► ► ► ► ► ► ► ► ► General Description The Supertex HV732 is a single, complete, high-voltage, high-speed, ultrasound transmitter pulser. It is designed for medical ultrasound imaging applications. The HV732 has built-in damping for faster RTZ waveform capability and high voltage MOSFET gate-clamping function for quick ramping of the output voltage amplitude. The HV732 consists of a control logic circuit, level translators, MOSFET gate drive buffers, clamp circuits, and high current, high voltage MOSFETs as the ultrasound transmitter pulser output stage. In the output stage there are two pairs of MOSFETs. Each pair consists of a P-channel and an N-channel MOSFET. They are designed to have the same impedance, and can provide peak currents of over ±2 amps. The built-in MOSFET gate driver outputs swing 0 to 12V on P DR and NDR pins. The P-channel damp output swings 0 to –5V on the DMPO pin. Typical Application Circuit Level Trans. DAMP Level Trans. +12V Level Trans. +12V V SUB Substrate, PAD1 +5 to 12V V DD AGND V LL V LN CLAMP EN GND +1.8 to 3.3V -5V on/off Clamp Circuit N IN AV DD Bias P IN P DR TX N V NN TX P V PP OUT N OUT P RGND P DMPI N DR DMPO N GATE P GATE 10nF 0 to +100V 0 to -100V HVOUT PAD 3 PAD 2 0V RGND N 10nF 10nF Buffer Buffer |
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