Benthowave Instrument Inc.

BENTHOWAVE INSTRUMENT INC. Acoustic Transducer & System 

Switching Mode Power Amplifier: Sonar and HIFU Transducer

BII-5110 Series High Efficiency Switching Mode Power Amplifier

Technical notes
The cable has adverse effects on the power amplifier performances in high frequency range. The longer the cable is, the worse the adverse effects is. If you use long cable in your project, you shall choose the power amplifiers whose output impedance matches cable and load impedance such as 50 ohms RG58 coax and 50 ohms load.

Suggested Application  
Echo Sounding
Sub-bottom Investigation
Seafloor-mapping System
Navigation Echosounder
Side Scan Sonar
HIFU Transducer
Acoustic Modem/Communication
Underwater Acoustic Positioning
Acoustic Beacon/Transponder
Audiogram Studies/Audiometry
Fishery Sounder/Netsonde
Dipping Sonar, Sonobuoy
Features  
Source Level Capability: 196.3+DI (dB)
Power Bandwidth: 3 MHz
Single DC Power Supply, High Efficiency
Small Size Fitting in ΦD1½" (38.1mm) Cylinder Housing
Easy/direct interface to Digital Output
Compatible to BII-4020 Sonar Signal Generator
Related Products  
Underwater Transducer SONAR, HIFU... BII-4000 Signal Generation

Specification

Switch Mode Power Amplifier BII-5111 BII-5112
RMS Power Capability: 275W@+36VDC Power Supply
122W@+24VDC Power Supply
30W@+12VDC Power Supply
See Graph of SPL vs Frequency
540W@+36VDC Power Supply
240W@+24VDC Power Supply
60W@+12VDC Power Supply
See Graph of SPL vs Frequency
Duty Cycle: ≤ 10% ≤ 10%
Input Signal Type: Pulsed/Burst Square Wave, FSK Pulse Signal and Continuous Square Wave, FSK
Output Signal Type: Pulsed/Burst Square Wave, FSK Pulsed/Burst Square Wave, FSK
Weight in Air:   24 grams 30 grams
Quiescent Current: 1mA 2mA
Miscellaneous: BII-5110 Series Power Amplifier
Logic Voltage Level: TTL and CMOS Compatible
Logic Low: 0 to 0.8V; Logic High: 3.5 to 5V
Supply Voltage Vcc: +10 to +36 VDC
Suggested DC Supply: Marine Battery, Automobile Battery, Fixed DC Linear Power Supply, Not Included.
DO NOT use variable power supply whose maximum supply voltage is higher than the above rated voltage. DO NOT use switching mode DC power supply.
Output Voltage, High (V): ≥ (Vcc - 0.03)
Output Voltage, Low (V): ≤ (Vcc - 0.03)
Minimum Load: 2.0 ohms
Operating Frequency: 1 kHz to 3 MHz, Limited by impedance matching & tuning network if any.
Power Efficiency: > 93%
Impedance Matching: BII-6000 Impedance Matching and Tuning; Not Included
Cable:  60mm wires
Connector:  Wire Leads
Size:  Rectangular PCB, LxWxH=68.6x36.1x36mm
Mounting:  4xΦD3.2mm through-holes
Operating Temperature: -40°C to 85°C
Storage Temperature: -50°C to 105°C
Technical Document: BII-5110 Series Power Amplifier Specs (PDF)

PCB Size and Mounting Information

Power Amplifier for Sonar Transducer 

Typical SPL (Sound Pressure Level) vs Frequency

Frequency (kHz) DUT (Device under Test) BII-5111 SPL (dB µPa*m) BII-5112 SPL (dB µPa*m)
3.5 to 1000 Omnidirectional Transducer 192.1 to 193.6 195.1 to 196.6
3.5 6" Planar Transducer 193.0 to 194.5 196.0 to 197.5
12 6" Planar Transducer 203.7 to 205.2 206.7 to 208.2
24 6" Planar Transducer 209.7 to 211.2 212.7 to 214.2
38 5" Planar Transducer 212.2 to 213.7 215.2 to 216.7
50 5" Planar Transducer 213.3 to 214.8 216.3 to 217.8
70 4" Planar Transducer 215.5 to 217.0 218.5 to 220.0
100 4" Planar Transducer 218.6 to 220.1 221.6 to 223.1
120 3" Planar Transducer 217.7 to 219.2 220.7 to 222.2
150 3" Planar Transducer 219.7 to 221.2 222.7 to 224.2
200 3" Planar Transducer 222.2 to 222.7 225.2 to 225.7
300 3" Planar Transducer 225.7 to 227.2 228.7 to 230.2
420 2" Planar Transducer 225.1 to 226.6 228.1 to 229.6
600 1.5" Planar Transducer 225.7 to 227.2 228.7 to 230.2
1000 1" Planar Transducer 226.6 to 228.1 229.6 to 231.1

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