Appendix A Specifications
PCI-4451/4452 User Manual A-4
©
National Instruments Corporation
Figure A-1. Idle Channel Noise (Typical)
Input noise spectral density....................8 nV/ (achievable only at
Gain= +50 dB or +60 dB)
Dynamic Characteristics
Alias-free bandwidth..............................DC to 0.464 fs
Alias rejection.........................................80 dB, 0.536 fs < fin < 63.464 fs
Spurious-free dynamic range..................95 dB
THD........................................................−80 dB; −90 dB for fin < 20 kHz or
signal < 1 Vrms
IMD ........................................................−100 dB (CCIF 14 kHz + 15 kHz)
Crosstalk (channel separation)................−100 dB, DC to 100 kHz
–65.0
–95.0
–90.0
–85.0
–80.0
–75.0
–70.0
1,000,0001,000 10,000 100,000
Noise
(dB Full-Scale)
Sample Rate (S/s)
Gain = +60 dB
Gain = +50 dB
Gain = +40 dB
Gain = All Others
Hz
User.book Page 4 Tuesday, April 14, 1998 10:20 AM