HV7321
4-Ch. 5-Level В±80V High-Voltage Ultrasound Pulser with T/R Switches
Features General Description 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 В±80V В±2.5A Peak Output Current В±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 Built-In CW Switches to Pair with External CW
Transmitters (CW Mode-1) 9 mm x 9 mm 64-Lead VQFN Package 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 В±2.5A and the output voltage swing can be up to
В±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 the driving the
field-programmable gate array (FPGA). Applications The HV7321 has two different modes
CW transmission, CW-Mode 0 and CW-Mode 1. for 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 CW source.
The HV7321 is LVCMOS 2.5V/3.3V input compatible,
which can be interfaced with the FPGA directly. …