National Instruments 1141 用户手册
Appendix A
Specifications
A-4
ni.com
Stability
DC gain temperature coefficient.............20 ppm/
°C
Input offset drift......................................
µV/
°C typ
µV/
°C max
AC gain temperature coefficient.............280 ppm/
°C
Digital Input/Output
EXT CLK pin input voltage
with respect to DIG GND .......................5.5 V max
with respect to DIG GND .......................5.5 V max
–0.5 V min
Absolute maximum voltage input
rating with respect to DIG GND.............–0.5 to 5.5 V
rating with respect to DIG GND.............–0.5 to 5.5 V
Digital input referenced to DIG GND
V
IH
, input logic high voltage ...........2 V min
V
IL
, input logic low voltage.............0.8 V max
Digital output referenced to DIG GND
V
OH
, output logic high voltage ........3.7 V min at 4 mA
V
OL
, output logic low voltage .........0.4 V max at 4 mA
20
32
Gain
------------
+
⎝
⎠
⎛
⎞
60
100
Gain
------------
+
⎝
⎠
⎛
⎞