Appendix A
Specifications
©
National Instruments Corporation
A-3
PCI-4451/4452/4453/4454 User Manual
Offset (residual DC)
Gain (amplitude accuracy) ..................... ±0.1 dB, f
in
= 1 kHz
Amplifier Characteristics
Input impedance
PCI-4451/4452................................ 1 M
Ω
in parallel with 50 pF
(+ and
−
each to AIGND)
PCI-4453/4454................................ 1 M
Ω
in parallel with 50 pF
(+ to AIGND)
Flatness (relative to 1 kHz)
−
3 dB bandwidth .................................... 0.493 f
s
Input coupling ........................................ AC or DC, software-selectable
AC
−
3 dB cutoff frequency ............ 3.4 Hz
Device
Gain
Max Offset
4451/4452
−
20 dB
±30 mV
−
10 dB
±10 mV
0 dB
±3 mV
+10 dB
±1 mV
+20 dB
±300 µV
+30, +40, +50, +60 dB
±100 µV
4453/4454
0 dB
±3 mV
Device
Gain
Flatness
4451/4452
0, +10, +20, +30, +40 dB
±0.1 dB, 0 to 95 kHz,
204.8 kS/s, DC coupling
–20, –10, +50, +60 dB
±1 dB, 0 to 95 kHz,
±0.1 dB, 0 to 20 kHz,
204.8 kS/s, DC coupling
4453/4454
0 dB
±0.1 dB, 0 to 23 kHz,
51.2 kS/s, DC coupling