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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.