HV7321 4-Ch. 5-Level 80V High-Voltage Ultrasound Pulser with T/R Switches Features General Description Power Sequencing Free 5 Output Levels The HV7321 is a 4-channel, 5-level, ultrasound including RTZ (Return-to-Zero) transmitter with built-in T/R switches, output protection diodes and clamp diodes. The HV7321 can provide up -44 dB Single-Cycle Pulse-Inversion Second to 2.5A and the output voltage swing can be up to Harmonic Distortion (HD2) at 5 MHz 80V. The HV7321 supports both Transparent and Output Voltage up to 80V Re-Timing mode. The re-timing clock frequency can 2.5A Peak Output Current support up to 220 MHz. The re-timing feature helps 300 mA Current from V /V in CW Mode-0 PP1 NN1 reduce the output jitter introduced by the driving the Integrated T/R Switch & RX Damper Switch field-programmable gate array (FPGA). Bleeder Switches Achieve True Zero during RTZ The HV7321 has two different modes for Supports Both Transparent and Re-Timing Mode CW transmission, CW-Mode 0 and CW-Mode 1. Re-Timing Clock Frequency Supports up to In CW-Mode 0 (Mode = 0, PWS = 0), the V and PP1 220 MHz V rails are used for CW transmission. The output NN1 Built-In Output Protection Diodes and Clamp current is reduced in CW Mode-0. Diodes In CW-Mode 1, the HV7321 accepts the output of an +2.5/+3.3V Input Logic external CW beamformer as CW source. Built-In CW Switches to Pair with External CW The HV7321 is LVCMOS 2.5V/3.3V input compatible, Transmitters (CW Mode-1) which can be interfaced with the FPGA directly. 9 mm x 9 mm 64-Lead VQFN Package The HV7321 is available in a 9 mm x 9 mm 64-Lead VQFN package. Applications Medical Ultrasound Imaging Systems NDT Ultrasound Piezoelectric or Capacitive Transducer Drivers 2016 Microchip Technology Inc. DS20005639A-page 1HV7321 Package Types 61 60 59 57 56 64 63 62 58 55 54 53 52 51 50 49 1 48 CW C IN0 PF1 SEL1 2 47 V PP1 46 NEG1 3 TX0 4 45 RX0 POS1 CW 5 44 R IN1 GND 6 43 OEN RX1 7 42 TX1 PWS 8 CLK 41 C POS 65 V SUB GND 9 40 C NEG V 10 39 TX2 LL RX2 REN 11 38 SEL2 12 37 R GND 36 RX3 NEG2 13 POS2 14 35 TX3 V CW 15 34 IN2 PP1 16 C SEL3 33 PF1 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 DS20005639A-page 2 2016 Microchip Technology Inc. NEG3 POS0 POS3 NEG0 CW SEL0 IN3 OTP MODE N V DD V DD GND GND V V GP GN V V PP0 PP0 V V PP0 PP0 C C PF0 PF0 C C NF0 NF0 V V NN0 NN0 V V NN0 NN0 V V NN2 NN2 V V NN1 NN1 C C NF1 NF1