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