Octal DAC with Differential Outputs and 2-Bit per Channel CMOS Output Pattern Generators for Ultrasound Transmitter S-US55D2

DatasheetJul. 19, 2022

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The ABLIC S-US55D2 is an octal, 12-bit, 200MSPS, Digital-to-Analog Converter (DAC) with analog differential outputs and 2-bit per channel CMOS output pattern generators. It is designed for an ultrasound linear amplifier with 3-level pulser (3LP). Each channel has a 12bit x 4096 DAC pattern memory and a 128Byte 3LP pattern memory. The S-US55D2 is suitable as the input signal pattern generator to the S-UM55L2 ultrasound transmitter.

Functions

  • Octal DAC with differential outputs and 2-bit per channel CMOS output pattern generators for an ultrasound transmitter

Features

<DAC>

  • On-chip 12bit x4096 pattern Memory for each DAC
  • 0.16μs to 40.96μs programmable delay time with 5ns resolution from TRIG signal
  • 200MSPS sampling rate
  • Both current output mode and voltage output mode are available.
  • 14Ω/2Ω output impedance are selectable at voltage output mode.
  • 1.28mA ~ 10.24mA selectable full-scale current @Current output mode
  • 0.074V~0.592V (0.083V~0.664V) selectable full-scale voltage @voltage output mode

<3LP pattern generator>

  • On-chip 128Byte pattern Memory for each 3LP pattern generator
  • 0.16μs to 40.96μs programmable delay time with 5ns resolution from TRIG signal

<Others>

  • Serial Peripheral Interface (SPI) for access to Memory and Register.
  • 1.8V to 3.3V CMOS control logic interface
  • Latch-up free, low crosstalk by SOI CMOS technology
  • 68-lead 10x10mm QFN package (RoHS compliant)

Block diagram