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HV7351 Datasheet(PDF) 1 Page - Microchip Technology |
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HV7351 Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 28 page  2015-2019 Microchip Technology Inc. DS20005412B-page 1 HV7351 Features • Eight Channels with Return-to-Zero (RTZ) • Up to ±70V Output Voltage • ±3.0A Output Current • Stores up to Four Different Patterns • Independent Programmable Delays • 80-Lead Single 11 x 11 mm VQFN Package Applications • Medical Ultrasound Imaging • Non-Destructive Testing (NDT) • Arbitrary Pattern Generator • High-Speed PIN Diode Driver General Description The HV7351 device is an 8-channel, programmable high-voltage ultrasound-transmit beamformer. Each channel is capable of swinging up to ±70V with an active discharge back to 0V. The outputs can source and sink up to 3.0A to achieve fast output rise and fall times. The active discharge is also capable of sourcing and sinking 3.0A for a fast return to ground. The topol- ogy of the HV7351 will significantly reduce the number of I/O logic control lines needed. Each pulser has four associated 64-bit Shift registers for storing predetermined transmit patterns and a 10-bit delay counter for controlling the transmit time. One of four arbitrary patterns can be transmitted with adjust- able delay, depending on the data loaded into these Shift registers and the delay counter. The delay counter can be clocked up to 200 MHz, allowing incremental delays down to 5 ns. Typical Application Circuit Tx128 TRIG Tx127 Tx3 Tx2 Tx1 tDELAY1 TRIG HV7351 8-Channel U1 HV7351 8-Channel U2 HV7351 8-Channel U16 tDELAY2 tDELAY3 tDELAY127 tDELAY128 E3 E1 E2 E127 E128 Array Probe 8-Channel, ±70V, 3A Programmable High-Voltage Ultrasound-Transmit Beamformer |
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