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differential charge amplifier for dynamic pressure sensors to be used with pcb 176 sensors

INDUSTRIAL CHARGE AMPLIFIER

Model 421B30

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Differential charge amplifier for Dynamic pressure sensors to be used with PCB 176 sensors

Sensitivity: (±5%)20.6 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 350 mV/psi or 350 µA/psi output when using a 17 pC/psi pressure sensor. If used with a pressure sensor with a different 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)	20.6 mV/pC	20.6 mV/pC	[4] [6]
Sensitivity (±5 %) (Current Output)	20.6 µA/pC	20.6 µA/pC	[4] [6]
Input Range	±242 pC	±242 pC
Low Frequency Response (-3 dB)	10 Hz	10 Hz	[2] [5]
High Frequency Response (-1 dB)	5 kHz	5 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)	1040 µV	-60 dB	[7] [8]
Spectral Noise (1 Hz)	38 µV/√Hz	-88 dB	[7] [8]
Spectral Noise (10 Hz)	54 µV/√Hz	-85 dB	[7] [8]
Spectral Noise (100 Hz)	13 µV/√Hz	-98 dB	[7] [8]
Spectral Noise (1 kHz)	10 µV/√Hz	-100 dB	[7] [8]
Spectral Noise (10 kHz)	10 µV/√Hz	-100 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