1FEATURES
2• Full Control Over Selecting Beam Directions
and Pulse Patterns by Programming Individual
Channel Parameters
• Outputs Interface Seamlessly with Positive
and Negative Inputs on Octal High-Voltage
Pulser ICs
• Beamformer Timing Provides:
– Delay Resolution of 0.78 ns
– Delay Range of up to 102.4 μs
• Pulse Patterns are Locally Generated with:
– Sequences of up to 64 Pulses
– Adjustable Pulse Widths
• 2.5V to 3.3V CMOS Logic Interface

KEY SPECIFICATIONS
• I/O voltage 2.5 to 3.3 V
• Core supply voltage 1.8 V
• Output pulse rate 80 MHz
• Reference frequency 40 (±5%) MHz
• 1σ Output Jitter (@ 5MHz) 25 ps
• Output Phase Noise (@ 5MHz, 1kHz offset)
−116 dBc/Hz
• Delay resolution 0.78 ns
• Delay range 102.4 μs
• Max. pattern length 64 pulses
• Serial interface speed 80 Mbps
• Total Power 0.063 Watts
• Operating Temp. 0 to +70 °C

APPLICATIONS
• Ultrasound Imaging

DESCRIPTION
The LM96570 is an eight-channel monolithic
beamformer for pulse generators in multi-channel
medical ultrasound applications. It is well-suited for
use with the LM965XX series chipset which offers a
complete medical ultrasound solution targeted
towards low-power, portable systems.
The LM96570 offers eight P and N output channels
with individual delays of up to 102.4 μs operating at
pulse rates of up to 80 MHz. A pulse sequence is
launched on all channels simultaneously through a
single firing signal. Advanced features include delay
resolution down to 0.78 ns and programmable
patterns of up to 64 pulses. Pulse patterns and delay
settings are pre-programmed through a serial
interface, thereby simplifying the timing requirements
on the driving circuitry.
The LM96570 is packaged in a 32-pin WQFN.