Power Amplifier: SONAR, NDT, HIFU

BII power amplifiers are engineered to drive underwater and ultrasonic transducers across a broad frequency range from 100 Hz to 10 MHz. They are well suited for a wide range of acoustic applications, including SONAR, non-destructive testing (NDT), high-intensity focused ultrasound (HIFU), and ultrasonic power transducers. These systems support both long-range acoustic communication and sensing applications over distances exceeding 10 km, as well as short-range applications at distances below 0.1 m. Both linear and switching (pulse) power amplifier architectures are available to meet diverse system requirements.
The BII5110 Series switching power amplifiers combine high output-power capability with low power consumption, high efficiency, wide bandwidth, and a compact form factor. These characteristics make the series particularly well suited for portable and battery-powered acoustic instruments, including sonobuoys, underwater pingers, transponders, acoustic releases, and other subsea acoustic systems.

Typical Applications
Subbottom Profiler, Sea-floor Mapping, Depth Sounder.	Ultrasonic (NDT) Testing, Dielectric Material Characterization.
Speedometer, Fishing Finding, Navigation, Acoustic Positioning.	Sonic Processing, Process Control, Cavitation, HIFU.
Underwater Communication, Telemetry, Acoustic Beacons, Remote Control.	Marine Animal Acoustics, Bioacoustics, Sound Playback.
Related Products
BII6000 Impedance Matching between Power Amplifiers and Transducers	Transducer  Broadband, High Power, High Temperature
BII4000 Signal Generator for Sonar and Ultrasound	BII2100 Transmit & Receive Switch for Sonar & Ultrasound

Acoustic Transducers and Measurement Systems: Installation/Mounting, Ordering, Wiring, Array & Aperture Design and much more.

Power Amplifier for SONAR and Ultrasonic (NDT and HIFU) Transducers

Power Amplifier	RMS Power	-3dB Bandwidth	Sound Level	Quiescent Current	Type	Package
» BII5000	32 Watt	10Hz to 120kHz	184.0 + DI	100mA active 10μA shutdown	Linear	PCB
» BII5020	86 Watt	0.1 to 500kHz	187.0 + DI	36mA active 16mA shutdown	Linear	PCB Metal Enclosure
» BII5040	31.3 Watt	50kHz to 10MHz	182.7 + DI	106mA active 0.8mA shutdown	Linear	PCB Metal Enclosure
» BII5060	208 to 415 Watt	0.1 to 70kHz	196.0 + DI	59mA Active 24mA Shutdown	Linear	PCB Metal Enclosure
» BII5100	309 Watt	1 to 500kHz	194.2 + DI	13mA	Switching or Pulse	PCB Metal Enclosure
» BII5110	108, 216 Watt	1kHz to 10MHz	194.1 + DI	1mA and 2mA	Switching or Pulse	PCB Metal Enclosure
» BII5120	138 Watt	20Hz to 2MHz	189.2 + DI	65mA Active 6mA Shutdown	Linear	PCB Metal Enclosure
» BII5160	208 Watt	100Hz to 20kHz	194.0 + DI	59mA Active 24mA Shutdown	Linear	Portable Case

Switching (Pulse) Power Amplifiers: Input signal of the PA is pulse or square signals with TTL/CMOS level or 2Vpp to 5Vpp.

Source Level (dB µPa*m) in water. DI: Directivity Index of a Transducer, η: Transducer Efficiency, in dB, η = -1.55dB (η = 0.7)  is used in the table above. η of broadband planar transducers such as NDT Transducers could be ≤ -5dB, η of broadband spherical or cylindrical transducers could be ≥ -0.5dB.

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