The HV7321 is a 4-channel, 5-level, ultrasound transmitter with built-in T/R switches, output protection diodes and clamp diodes. The HV7321 can provide up to ±2.5A and the output voltage swing can be up to ±80V. The HV7321 supports both Transparent and Re-Timing mode. The re-timing clock frequency can support up to 220 MHz. The re-timing feature helps reduce the output jitter introduced by a driving field-programmable gate array (FPGA).

The HV7321 has two different modes for CW transmission, CW-Mode 0 and CW-Mode 1. In CW-Mode 0 (Mode = 0, PWS = 0), the VPP1 and VNN1 rails are used for CW transmission. The output current is reduced in CW Mode-0. In CW-Mode 1, the HV7321 accepts the output of an external CW beamformer as the CW source. The HV7321 is LVCMOS 2.5V/3.3V input compatible, which can interface directly with an FPGA.  The HV7321 is available in a 9 mm x 9 mm 64-Lead VQFN package.

•  Power Sequencing Free 5 Output Levels including RTZ (Return-to-Zero)

• -44 dB Single-Cycle Pulse-Inversion Second Harmonic Distortion (HD2) at 5 MHz

• Output Voltage up to ±80V

• ±2.5A Peak Output Current

• ±300 mA Current from VPP1/VNN1 in CW Mode-0

• Integrated T/R Switch & RX Damper Switch

• Bleeder Switches Achieve True Zero during RTZ

• Supports Both Transparent and Re-Timing Mode

• Re-Timing Clock Frequency Supports up to 220 MHz

• Built-In Output Protection Diodes and Clamp Diodes

• +2.5/+3.3V Input Logic Compatible

• Built-In CW Switches to Pair with External CW Transmitters (CW Mode-1)

• 9 mm x 9 mm 64-Lead VQFN Package