Appendix A
Specifications for SCXI-1120D
A-6
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Transfer Characteristics
Nonlinearity ............................................0.04% FSR
Offset error RTI ......................................±(6 µV ±3 mV/gain)
Gain error................................................0.4% of reading typ
0.6% max
Amplifier Characteristics
Input impedance
Power on..........................................1 M
Ω
Power off and overvoltaged.............500 k
Ω
Input bias current ....................................15 pA
CMRR at DC
1
.........................................≥
110 dB
CMRR at 50 or 60 Hz
...........................≥
98 dB
Output range ...........................................± 5 V
Output impedance...................................100
Ω
in multiplexed mode 330
Ω
in parallel mode
Dynamic Characteristics
Bandwidth (–3 dB) .................................4.5 kHz or 22.5 kHz jumper
selectable
Slew Rate ................................................2 V/µs
1
0
Ω
in low lead
Table A-2.
System Noise RTI (0.1 Hz to 50 kHz)
Gain
Noise
0.5
10 µV
rms
/
√
Hz
1,000
0.1 µV
rms
/
√
Hz
