16-Channel Programmable 3-Level High-Voltage Ultrasound Transmit Beamformer S-UM5587EF

S-UM5587EF is a 16-channel programmable 3-level high-voltage ultrasound transmit beam-former. The S-UM5587EF comprises control logic, waveform memory, delay calculator, level translators, gate drive buffers with floating voltage regulators, high-voltage, high-current MOSFETs, and active T/R switches.


  • 16-channel programmable 3-level transmit beam-former with active T/R-switch


  • 0 to ±100V output voltage
  • ±1A source and sink current with 2-mode current control for the high-voltage pulses
  • ±0.5A source and sink peak current for active ground clamp
  • 250Ω active ground clamp without blocking diode for anti-leakage
  • 20MHz output frequency at ±60V output, 80pF load
  • Symmetrical positive and negative pulse waveforms for low 2nd order harmonic distortion
  • 1.8V to 3.3V LVCMOS logic interface
  • Waveform memory and registers with 100MHz Write /50MHz Read SPI
  • 0.2μs to 41μs common delay time range from TRIG signal
  • 0 to 2.55μs channel-to-channel delay time range
  • 5ns channel-to-channel delay time resolution with dual-edge 100MHz LVDS/LVCMOS clock
  • Minimum 10ns pulse width with 5ns time resolution with dual-edge 100MHz LVDS/LVCMOS clock
  • 28Ω active T/R switch
  • Noise-cut diodes at each high-voltage output
  • High-voltage clamp diodes between each high-voltage output and power rails
  • Automatic thermal protection with indicator
  • Power-up/down reset function for free power sequencing and for fail-safe in abrupt power drop
  • Latch-up free, low crosstalk between channels by SOI CMOS technology
  • QFN-68(1010)B: 68-lead 10x10mm QFN package (RoHS compliant)

Block diagram