differential charge amplifier for dynamic acceleration sensors to be used with 10pc/g sensors

DIFFERENTIAL INPUT IN-LINE CHARGE AMPLIFIER

Model 421B31

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  • CE
  • IP

Differential charge amplifier for Dynamic acceleration sensors to be used with 10pC/g sensors

  • Sensitivity: (±5%)10 mV/pC
  • Output Voltage: ±5 Vpk
  • Temperature Range: -22 to +185 °F (-30 to +85 °C)
  • Housing Material: Aluminum

Specification Notes

[1] Above stated frequency, the amplifier becomes slew rate limited.
[2] The low frequency tolerance is accurate within ±20% of the specified frequency.
[3] The high frequency tolerance is accurate within ±20% of the specified frequency.
[4] Output can be set to either current or voltage output depending on the wiring configuration. See manual for wiring configuration.
[5] Frequency response tested with 1000pF input capacitor.
[6] Set to provide a 100 mV/g or 100 µA/g output when using a 10 pC/g accelerometer. If used with an accelerometer with a diferent sensitivity, the output sensitivity will vary.
[7] Typical.
[8] Tested using voltage source and input capacitor equal to the feedback capacitor, to simulate a charge output sensor.
[9] See PCB Declaration of Conformance PS024 for details. A low impendance connection from case to earth ground is required to maintain CE compliance.

English: SI:
Performance
Sensitivity (±5 %) (Voltage Output) 10 mV/pC 10 mV/pC [4] [6]
Sensitivity (±5 %) (Current Output) 10 µA/pC 10 µA/pC [4] [6]
Input Range ±500 pC ±500 pC
Low Frequency Response (-3 dB) 10 Hz 10 Hz [2] [5]
High Frequency Response (-1 dB) 1 kHz 1 kHz [1] [3] [5]
Non-Linearity ≤1.0 % FS ≤1.0 % FS
Environmental
Temperature Range (Operating) -22 to +185 °F -30 to +85 °C
Temperature Response (Sensitivity Deviation) <2.5 % <2.5 %
Electrical
Excitation Voltage 22 to 28 VDC 22 to 28 VDC
Output Voltage ±5 Vpk ±5 Vpk
Output Impedance <770 Ohm <770 Ohm
Output Bias Voltage 7.3 to 7.7 VDC 7.3 to 7.7 VDC
Output Bias Current 11 to 13 mA 11 to 13 mA
Output Current ±5 mApK ±5 mApK
Broadband Electrical Noise (1 to 10000 Hz) 478 µV -66 dB [7] [8]
Spectral Noise (1 Hz) 19 µV/√Hz -94 dB [7] [8]
Spectral Noise (10 Hz) 26 µV/√Hz -92 dB [7] [8]
Spectral Noise (100 Hz) 7 µV/√Hz -103 dB [7] [8]
Spectral Noise (1 kHz) 6 µV/√Hz -104 dB [7] [8]
Spectral Noise (10 kHz) 4 µV/√Hz -108 dB [7] [8]
Resistance (Minimum required at input) 100000 Ohm 100000 Ohm
Source Capacitance Loading 0.0009 %/pF 0.0009 %/pF
Physical
Housing Material Aluminum Aluminum
Weight 6.5 oz 184 gm

* All specifications are at room temperature unless otherwise specified.