Benthowave Instrument Inc.

BENTHOWAVE INSTRUMENT INC. Acoustic Transducer & System 

Ultrasonic Preamplifier

BII-1050 Series    Ultrasonic Preamplifier: 1 Hz to 4 MHz

Suggested Application  
Seafloor-mapping
Sub-bottom Investigation
Sediment Profiler
Acoustic Image
Navigation
High Speed Communication
Receiving Array, Sonobuoy
Target Strength Testing
Ultrasonic Instrumentation
Sonic Cavitation Noise
Features  
Round and Rectangular PCB
80dB gain range, custom gain
Low Noise, Broadband: up to 4MHz
Drive long cable: 200m
Built-in protection circuit
Custom highpass or bandpass filter
Related Products  
Hydrophone Underwater Transducer

How to choose -3dB cut-off frequency of the filter in BII-1050 series?
When BII-1050 series is used in active Sonar system such as echo sounding, sea floor mapping, seabed profiling, imaging Sonar, Doppler Sonar..., and underwater wireless communication, its cut-off frequency shall match the bandwidth of known Sonar signals as close as possible. With appropriate filter, BII-1050 series can attenuate the unwanted noises in ocean.

Technical notes
The cable has adverse effects on the signal quality in high frequency range. The longer the cable is, the worse the adverse effects is. If you use long cable in your project, you may specify customized output impedance of BII's preamplifiers to match cable impedance and the DAQ input impedance, for example, customized 50 ohms output impedance of BII preamplifier for 50 ohms RG58 coax of DAQ system.

Specification

How to choose preamplifier? If frequency of interest covers low frequency range up to 10kHz, a preamplifier with low current noise should be used. If frequency of interest only cover high frequency range greater than 10kHz, a preamplifier with low voltage noise should be used.
Note: Rectangular PCB LxWxH = Length x Width x Height.        Round PCB ΦDxH = Diameter x Height.
Preamplifier Custom
Gain dB
Default BW
Filter en & in Ri Output
Type
Driving
Cable
Vs Is mA Coated PCB
Size: mm
BII-1051 Default:40
0 to 80
8Hz to 3.4MHz@20dB
8Hz to 2.5MHz@40dB
8Hz to 800kHz@60dB
8Hz to 200kHz@80dB
BPF 1.3 (nV/√Hz)
0.8 (pA/√Hz)
200kΩ SE 200m +7.5
to
+30
15 LxWxH
32x10x5
BII-1052 Default:40
0 to 80
8Hz to 4.0MHz@20dB
8Hz to 2.0MHz@40dB
8Hz to 600kHz@60dB
8Hz to 50kHz@80dB
BPF 10.0 (nV/√Hz)
0.8 (fA/√Hz)
44MΩ SE 200m +8.5
to
+30
8 LxWxH
32x10x5
BII-1053 Default:40
0 to 80
1Hz to 3.4MHz@20dB
1Hz to 2.5MHz@40dB
1Hz to 1.0MHz@60dB
1Hz to 400kHz@80dB
BPF 1.3 (nV/√Hz)
0.8 (pA/√Hz)
200kΩ DF 200m +7.5
to
+30
15 LxWxH
38x11.5x5
BII-1054 Default:40
0 to 80
1Hz to 4.0MHz@20dB
1Hz to 2.0MHz@40dB
1Hz to 800kHz@60dB
1Hz to 100kHz@80dB
BPF 10.0 (nV/√Hz)
0.8 (fA/√Hz)
44MΩ DF 200m +8.5
to
+30
8 LxWxH
38x11.5x5
BII-1055 Default:40
0 to 54
1Hz to 3.4MHz@0dB
1Hz to 2.8MHz@20dB
1Hz to 800kHz@40dB
1Hz to 300kHz@54dB
HPF 1.3 (nV/√Hz)
0.8 (pA/√Hz)
200kΩ SE 20m +7.5
to
+30
12 LxWxH
26x10x5
BII-1056 Default:40
0 to 60
1Hz to 4.0MHz@0dB
1Hz to 2.0MHz@20dB
1Hz to 600kHz@40dB
1Hz to 50kHz@60dB
HPF 10.0 (nV/√Hz)
0.8 (fA/√Hz)
44MΩ SE 20m +8.5
to
+30
4.8 LxWxH
26x10x5
BII-1057 Default:40
0 to 80
1Hz to 3.4MHz@20dB
1Hz to 2.5MHz@40dB
1Hz to 1.0MHz@60dB
1Hz to 400kHz@80dB
BPF 1.3 (nV/√Hz)
0.8 (pA/√Hz)
200kΩ DF 200m +7.5
to
+30
15 ΦDxH
Φ25.4x10
BII-1058 Default:40
0 to 80
1Hz to 4.0MHz@20dB
1Hz to 2.0MHz@40dB
1Hz to 800kHz@60dB
1Hz to 100kHz@80dB
BPF 10.0 (nV/√Hz)
0.8 (fA/√Hz)
44MΩ DF 200m +8.5
to
+30
8 ΦDxH
Φ25.4x10
BII-1059 Default:40
0 to 60
1Hz to 4.0MHz@0dB
1Hz to 2.0MHz@20dB
1Hz to 600kHz@40dB
1Hz to 50kHz@60dB
HPF 10.0 (nV/√Hz)
0.8 (fA/√Hz)
44MΩ SE 1000m +8.5
to
+30
6.3 LxWxH
32x10x5
en: Input Referred Voltage Noise at 1kHz; in: Input Referred Current Noise at 1kHz; Ri: Input Resistance. BW: -3dB Bandwidth. Vs: Supply Voltage VDC; Is: Quiescent supply Current; BPF: Band Pass Filter; HPF: High Pass Filter; SE: Single-ended; DF: Differential.
Note: In the case of high input resistance such as 44MΩ, the preamplifier may take 1 to 2 minutes to function after powering on. To void this delay, input resistance shall be customized to the lower when ordering.
 
Miscellaneous: BII-1050 Series Preamplifier
Built-in Filter: Customized -3dB cut-off frequency, specify when ordering.
Note: White noise level is proportional to the square root of bandwidth. Narrow bandwidth should be customized to reduce the white noise level at output.
Suggested DC Supply: +9VDC Battery, 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.
Size (Potted Unit): ΦDxH: 48x15mm
Input Type: Differential (either single ended or differential input signals are accepted).
Input Wiring: Coated PCB: 3cm wires; Potted Unit: 0.15m Cables/Wires.
Maximum Input: 2.4Vpp or (Maximum Output)/Gain, whichever is less.
Maximum Output: Supply Voltage - 4 Vpp
Output Impedance: Default: 10Ω or Customized
Output Wiring: Coated PCB: 3cm wires; Potted Unit: 0.15m Cables/Wires.
Operating Temperature: -40°C to 85°C
Storage Temperature: -50°C to 105°C
Weight:  3 gram (coated PCB); 30.0 gram (potted unit).
BII-1050 Series Wiring: Click Wiring of PCB and Potted Preamplifier
DAQ Wiring: Click DAQ Wiring for detailed wiring information to data acquisition devices.

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