MAX4940ACTN+

Power Management - Specialized Overview

The MAX4940ACTN+ is a high-voltage dual or quad unipolar/bipolar digital pulser designed for medical ultrasound imaging and sonar applications. It operates from a single supply voltage of 3V to 5.5V and generates output pulses ranging from -100V to +100V. The device features a 56-pin TQFN package (8x8 mm) with an exposed pad. Key electrical specifications include a maximum negative supply voltage of -12V and an operating supply current of 36 mA. It supports parallel ADC interfaces and includes integrated timing control capabilities.

Power Management - Specialized Feature Summary

• Generates high-voltage bipolar or unipolar pulses suitable for piezoelectric transducer excitation in imaging systems.
• Integrates digital control logic for precise pulse width and timing management without external components.
• Provides flexible output configurations supporting both dual and quad channel operation modes.

Power Management - Specialized Applications

• Medical ultrasound imaging system front-end drivers
• Sonar transducer pulse generation circuits
• High-voltage pulsed power supply modules

Power Management - Specialized Procurement Notes

Verify the specific suffix (+) indicates lead-free and RoHS compliance as per manufacturer standards. Confirm the package type matches the required 56-pin TQFN footprint. Ensure the supplier provides official datasheets confirming the -100V to +100V output range. Check for moisture sensitivity level 3 handling requirements during storage and assembly.

Power Management - Specialized Selection Notes

Select this component when designing systems requiring integrated high-voltage pulsing with low-voltage digital control. Consider the 56-pin thermal pad for heat dissipation needs. Evaluate the 36 mA supply current against system power budgets. Ensure compatibility with existing parallel ADC interfaces if used in data acquisition chains.

Power Management - Specialized Part Context

This part belongs to Maxim Integrated's specialized PMIC family for analog signal processing support. It complements other ultrasound front-end components by providing the necessary high-voltage drive capability. The device bridges low-voltage digital controllers and high-voltage piezoelectric elements, simplifying board layout and reducing component count in dense medical devices.

Power Management - Specialized Replacement Considerations

Check Analog Devices documentation for direct pin-to-pin replacements within the MAX49xx series. Verify that any substitute maintains the -100V to +100V output swing and 56-pin TQFN form factor. Cross-reference timing specifications to ensure compatibility with existing system clocks.

Power Management - Specialized FAQ

What is the maximum output voltage swing of the MAX4940ACTN+?

The device supports an output voltage range from -100V to +100V.

Does the MAX4940ACTN+ support both unipolar and bipolar pulse modes?

Yes, it is designed to generate both unipolar and bipolar pulses for various transducer types.

What is the operating supply voltage range for the control logic?

The control logic operates on a single supply voltage between 3V and 5.5V.