DASP-52282 Card User’s Manual
Theorem of Operation
33
3.5 Analog Input Range, ADC Code and AD
Value
A almost linear mapping exist between the 12-bit ADC code and
analog input for the DASP-52282, the nonlinearity of this linear
mapping is described in section 1.2. Figure 4-6 depicts the linear
mapping of AD code of DASP-52282 and the analog input signal.
FS denotes the full span of analog input under the user
configured analog input range. The mapping of analog input to
ADC code of DASP-52282/ DASP-52282L/ DASP-52282H/
DASP-52282HL at
±
FS and 0 input under different analog input
ranges are listed in following respectively.
0
+FS
-FS
0
0xFFF
0x800
0
+FS
0
0xFFF
0x800
+FS/2
Bipolar Input
Uni-Polar Input
Mapping of 12-bit ADC Code and Analog Input for DASP-52282
