LM96570SQX/NOPB

Specialized Overview

The LM96570SQX/NOPB is an eight-channel monolithic transmit beamformer for medical ultrasound applications. It features P and N output channels with individual delays up to 102.4 µs and a resolution of 0.78 ns. The device supports pulse rates up to 80 MHz and programmable patterns of up to 64 pulses. It operates with a core supply voltage of 1.8 V and a 2.5 V to 3.3 V CMOS logic interface. The reference frequency is 40 MHz, and the serial interface speed reaches 80 Mbps. Total power consumption is 0.063 Watts, and it functions within an operating temperature range of 0 to +70 °C.

Specialized Feature Summary

• Provides full control over beam directions and pulse patterns through individually programmable channel parameters.
• Outputs interface seamlessly with positive and negative inputs on octal high-voltage pulser ICs.
• Generates local pulse sequences of up to 64 pulses with adjustable pulse widths.
• Features a 4-wire serial interface for pre-programming delay settings and pulse patterns.

Specialized Applications

• Ultrasound Imaging
• Multi-channel medical ultrasound systems
• Portable low-power ultrasound solutions

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure package and reel quantity alignment. The SQX suffix typically indicates a 4500-unit reel quantity in WQFN-32 packaging. Confirm moisture sensitivity level requirements and storage conditions prior to assembly to maintain component integrity during the manufacturing process.

Specialized Selection Notes

Select this component for designs requiring precise timing control in multi-channel ultrasound arrays. Ensure the host system provides a stable 40 MHz reference clock and compatible 1.8 V and 3.3 V power rails. Verify that the driving circuitry can handle the required serial interface speeds and that the thermal design accommodates the specified power dissipation within the operational temperature range.

Specialized Part Context

This part belongs to the LM96570 series of configurable transmit beamformers. It is designed to work in conjunction with companion chipsets like the LM9655x series to form a complete medical ultrasound solution. The device integrates delay generation and pulse pattern logic to simplify the timing requirements of the driving circuitry in portable imaging systems.

Specialized Replacement Considerations

The LM96570SQE/NOPB is a verified alternative offering identical functionality but packaged in a 250-unit reel instead of the 4500-unit reel found in the SQX variant. Both share the same WQFN-32 package and electrical specifications.

Specialized FAQ

How is the pulse width adjusted on the LM96570?

Pulse width adjustment is achieved by manipulating the phase delays of the P and N outputs relative to each other. This is configured via bits 20 and 21 of the delay profile registers (00h to 07h) to enable adjustment for either the P or N output.

What is the maximum delay range supported by the device?

The LM96570 supports a user-programmable delay range of up to 102.4 µs per channel, with a fine resolution of 0.78 ns.

Can the same pulse pattern be applied to all channels simultaneously?

Yes, global channel registers (18h for P part and 19h for N part) allow the same pulse pattern to be applied to all eight channels at once, simplifying programming when uniform patterns are required.