MC104A / MC106A / MC108A ICCP Power Supply

MC104A / MC106A / MC108A power supply can provide power for prepolarized microphones, accelerometers and other ICCP compatible transducers. It has 4~8 channels input/output with BNC connector, and wide voltage power supply supports the use of various DC power supplies.

ICCP is a well-established standard which is widely used in the acoustic and vibration field to convert the high impedance signal of measurement microphones and piezoelectric transducers to a low impedance voltage output signal. The abbreviation ICCP stands for "Integrated Constant Current Power" and has many manufacturer specific names such as ICP® (Integrated Circuit Piezoelectric), CCLD (Constant Current Line Drive), DeltaTron®, ISOTRON® and IEPE (Integrate Electronics Piezoelectric). MC104A / MC106A / MC108A is compatible with microphones or transducers using any of the above proprietary names.

MC104A / MC106A / MC108A has an all-aluminum housing, which can effectively shield the internal signal. The LED indicators display the power supply status and the input status of each channel (input open (sensor not connected), OK (sensor connected), and input shorted). Each channel has a 35Vp input and output protection circuit, which can protect sensors and data acquisition equipment.


ICP is a registered trademark of PCB Piezotronics, Inc., DeltaTron is a registered trademark of Hottinger Brüel & Kjær A/S, ISOTRON is a registered trademark of ENDEVCO. This document only describes the technical principles involved and inevitably mentions the registered trademarks of other manufacturers, which is not intended and will not harm the interests of trademark owners. The registered trademarks mentioned above belong to their respective owners.


● Provides power for microphones, accelerometers and other ICCP transducers

● 4 / 6 / 8 channel input/output with BNC connector

● LED indicators show the status of each input channel

● 4 mA / 24 V ICCP power supply

● 7 V~30 V wide voltage DC power supply


● Power for microphones, accelerometers and other ICCP compatible transducers


Type MC104A MC106A MC108A
Input Channel 4 x BNC 6 x BNC 8 x BNC
Output Channel 4 x BNC 6 x BNC 8 x BNC
Constant Current Source 4 mA (3.5 mA~5 mA),24V (±1 V)
Maximum Input Voltage1 ±10 Vp
Maximum Output Voltage1 ±10 Vp
Input / Output Protection Voltage 35 Vp
Output Impedance2 As source in serial with 10 µF and parallel 100 kΩ
Frequency Response1 4 Hz ~ 100 kHz (±0.2 dB),0.4 Hz ~ 200 kHz (±3 dB)
Output Noise A-weighted <3 μV (2.5 μV typ.)
Linear <5 μV (3.8 μV typ.)
Crosstalk -120 dB (linear, ICCP powered enabled)
Input Status Indicator Bi-color LED: off=input open, yellow=OK, red=input shorted. Cable Fault Voltage threshold: 2 V and 22 V.
Power Supply 7 V~30 V DC power supply
≥300 mA ≥450 mA ≥600 mA
Operating Temperature Range - 10 °C ~ 50 °C
Operating Humidity Range 0 %RH ~ 95 %RH (no condensation)
Dimensions (mm) W185 x H51 x D143 W255 x H51 x D143 W325 x H51 x D143
Weight 735 g 970 g 1205 g

  Note 1: Depend on the performance and frequency response of preamplifier.

  Note 2: Source output impedance refers to the output impedance of the device connected to the input of the power supply / conditioner, which is generally the output impedance of the preamplifier.

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MC104A / MC106A / MC108A ICCP Power Supply