S-UM5587 is a 16-channel programmable 3-level high-voltage ultrasound transmit beam-former. The S-UM5587 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.

Functions

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

Features

0 to ±100V output voltage
±2A source and sink current with 4-mode current control for the high-voltage pulses
±1A 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, 220pF 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
15Ω 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
BGA-330(1313)A:13x13mm BGA package (RoHS compliant)

Block diagram