Downloads

Charge converter CC-20

Charge converters convert the high-impedance electric charge output signal of piezoelectric accelerometers into low-impedance voltage signals.

These are line drive pre-amplifiers that enable the sensor output signal to connect to the measuring devices. The price is much lower, compared with ordinary charge amplifiers.

Specifications

Input Connector Miniature connector (10-32UNF)
Output Connector BNC
Gain 1.0 mV/pC ±2.5 %
Output Impedance <100 Ω
Frequency Response (±3 dB) 1.6 Hz – 50 kHz
Maximum Output Voltage 5 Vpp
Maximum Input Charge >5000 pCpp
Noise Level 100 μVrms (50 Hz – 100 kHz)
Phase 180° reversal
Operating Temperature Range –20 °C to 80 °C (non-condensing)
External Power Supply DC 12–25 V, 0.5–5 mA
Case Material SUS303
External Dimensions ⌀ 12 mm × 38 mm (L)
Weight 20 g

Caution

  • Because of the characteristics of the circuit of this product, the phase of the input signal is inverted and output.
  • To obtain the maximum output voltage, the following formula must be satisfied.
    I > Vmax × πf × (Cc × 1000 × 10-12) + 0.12 × 10-3
    I : Constant current value
    Vmax : Maximum output voltage (Vp-p)
    f : frequency (Hz)
    Cc : Output cable capacity (F)