LM96551

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SNAS511B – OCTOBER 2011 – REVISED MAY 2013

LM96551 Ultrasound Transmit Pulser

Check for Samples: LM96551

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FEATURES

APPLICATIONS

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8-Channel High-Voltage CMOS Pulse

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Ultrasound Imaging

Generator

DESCRIPTION

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Output Pulses with ±50V and 2A Peak Current

The LM96551 is an eight-channel monolithic high-

•

Active Damper with Built-In Blocking Diodes

voltage, high-speed pulse generator for multi-channel

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Built-In Floating Supply Voltages for Output

medical ultrasound applications. It is well-suited for

Stage

use with Texas Instrument’s LM965XX series chipset

which offers a complete medical ultrasound solution

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Up to 15 MHz Operating Frequency

targeted towards low-power, portable systems.

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Matched Delays for Rising and Falling Edges

The LM96551 contains eight high-voltage pulsers

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Low Second Harmonic Distortion Allows and

with integrated diodes generating ±50V bipolar pulses

Improves Harmonic Imaging

with peak currents of up to 2A and pulse rates of up

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Continuous-Wave (CW) Operation Down to

to 15 MHz. Advanced features include low-jitter and

±3.3V

low-phase-noise output pulses ideal for continuous-

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Low Phase Noise Enables Doppler

wave (CW) modes of operation. Active clamp circuitry

Measurements

is integrated for ensuring low harmonic distortion of

the output signal waveform.

–

-145 dBc/Hz Phase Noise at 10 MHz (1 kHz

offset)

The LM96551 also featuers a low-power operation

mode and over-temperature protection (OTP) which

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Output State Over-Temperature Protection

are enabled by on-chip temperature sensing and

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Blocking Diodes for Direct Interface to

power-down logic.

Transducer

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2.5V to 5.0V CMOS Logic Interface

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Low-Power Consumption per Channel

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Over Temperature Protection

KEY SPECIFICATIONS

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Output voltage ±50 V

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Output peak current ±2.0 A

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Output pulse rate Up to 15 MHz

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Rise/fall delay matching (max) < 3.7 ns

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Pulser HD2 (5 MHz) -40 dB

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Operating Temp. 0 to +70 °C

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PRODUCTION DATA information is current as of publication date.

Copyright © 2011–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.