Skip to main content

Table 2 Overall circuit parameters

From: Development of an ultra low noise, miniature signal conditioning device for vestibular evoked response recordings

Parameter Measured
Input voltage noise density 4.8 nV / Hz
Input current noise density * 2.8 fA / Hz
Input Impedance *5 TΩ | 18 pF
THD (@1 kHz, 0.2 V) 0.0012%
CMRR (@100Hz) 115 dB
Mid-band gain 89 dB
Bandwidth 5 Hz-10 kHz
Max input voltage swing ±180 mV
Power supply ±9 V Batteries
Total current 64.2 mA
Printed circuit board size 9.9 cm X 5.4 cm
Patient isolation *2 pF (from mains ground)
  1. *Values obtained from datasheets and simulations.